606 Teeny turbo and back pressure...
606 Teeny turbo and back pressure...
Hi all,
I am tinkering with the boost and the electronics are buggering me a little, but worse, I am told the back pressure are going to kill the turbo and maybe the engine I wasn't really aware of that, that the gases have to go through the teeny wheel, and then the pressure must be immense as the more boost, the more fuel, the bigger the bang I guess...
I found out that if I lock( totally shut off) the wategate, I can go up to 26 PSI and the car is more responsive, until the ECU freak out and kill the boost for about a second ( on the highway at a continuous trashing).
Then its 24 ish or 26 ( depend on the load I guess?) , killed for about a second at 17 and back again at 24...
A bit yo-yo style...
I was also told that the ECU would freak out if I was to cruise along on the highway as the ECU would not be able to open the wategate, and indeed, it happened...
The engine needed to be turn off and restarted to reset it.
Now, after this explanation, I was wondering about the killer back pressure. There is a possibility to re-direct the gases from the EGR to the ground ( I have the electronic EGR delete-thank you Kartek)), this would definitely ease the deadly back pressure, but,
1:would that be leaving enough pressure for the turbo to spin? The EGG tube id about 12 mm I think, quiet large. But I could restrict it.
2: would that be enough to restrict the back pressure to a safe level?
3:If I do that and the manifold pressure is 26 PSI, would that be OK then as the back pressure should be less? Or the turbo would be dead in no time no matter what as its spooling way too high?
4: is there a pressure valve that would be heat resistant enough to withstand the heat of the gases, and that I could install to open at a certain pressure and what pressure should it be?
Thank you
Olivier
Hi aaa,
What do you mean by boost controller?
I think the car is more responsive as the wastegate is shut tight, then when I press the pedal, there is no lag of the vacuumed acuator to shut the wastegate and then get the boost.
This vacuumed acuator can be slow by the time it react as the pressure is building forcing the wastegate open and the transducer try to suck the air out to shut it... Its a pain...
The bugger is the electronics as they are set up to do a smooth take off ( from what I can gather), not "bang, here is power"... Then yes, if there is a boost controller I could get that would be nice, but I think its only possible via re-map which is costly?
The thing also is that to get 26 PSI the pump must be injecting a lot of fuel, then in theory I should have more power? The higher the boost without upgrading the turbo mean more fuel injected? Or I got it totally wrong?
Thank you
Olivier
(10-20-2012, 12:49 PM)Olivier Hi aaa,
What do you mean by boost controller?
I think the car is more responsive as the wastegate is shut tight, then when I press the pedal, there is no lag of the vacuumed acuator to shut the wastegate and then get the boost.
This vacuumed acuator can be slow by the time it react as the pressure is building forcing the wastegate open and the transducer try to suck the air out to shut it... Its a pain...
The bugger is the electronics as they are set up to do a smooth take off ( from what I can gather), not "bang, here is power"... Then yes, if there is a boost controller I could get that would be nice, but I think its only possible via re-map which is costly?
The thing also is that to get 26 PSI the pump must be injecting a lot of fuel, then in theory I should have more power? The higher the boost without upgrading the turbo mean more fuel injected? Or I got it totally wrong?
Thank you
Olivier
It doesn't go like that. More boost doesn't make any sense if you don't get more fuel. Evry mod is cheap and easy way to get more fuel. When you do that, you can put boost controller in and make more power. With that engine you have to put boost controller to that hose between the map-sensor and intake manifold. That controller bleeds part of pressure to air so map sensor thinks that there isn't so much pressure and lets wastegate stay shut longer.
(10-20-2012, 12:49 PM)Olivier Hi aaa,
What do you mean by boost controller?
I think the car is more responsive as the wastegate is shut tight, then when I press the pedal, there is no lag of the vacuumed acuator to shut the wastegate and then get the boost.
This vacuumed acuator can be slow by the time it react as the pressure is building forcing the wastegate open and the transducer try to suck the air out to shut it... Its a pain...
The bugger is the electronics as they are set up to do a smooth take off ( from what I can gather), not "bang, here is power"... Then yes, if there is a boost controller I could get that would be nice, but I think its only possible via re-map which is costly?
The thing also is that to get 26 PSI the pump must be injecting a lot of fuel, then in theory I should have more power? The higher the boost without upgrading the turbo mean more fuel injected? Or I got it totally wrong?
Thank you
Olivier
It doesn't go like that. More boost doesn't make any sense if you don't get more fuel. Evry mod is cheap and easy way to get more fuel. When you do that, you can put boost controller in and make more power. With that engine you have to put boost controller to that hose between the map-sensor and intake manifold. That controller bleeds part of pressure to air so map sensor thinks that there isn't so much pressure and lets wastegate stay shut longer.
Thank you.
The thing is that I do get more boost shutting the wastegate as the ECU is injecting more fuel, or as much fuel as it can to keep up with the air intake. If it was only air, I wouldn't have any boost? No?
I can trick the ECU at the boost sensor with a resistor, to fooled it saying I got less boost then actually there is, but to my understanding, if I fool the ECU telling it that there is not as much boost as actually there is, it will not inject enough fuel and I could run lean, damaging the engine running too hot?
If I got 26PSI shutting of the wastegate its not only because there is no escape for the gases, this is also because the ECU is doing its best to compensate the fuel/ air mixture by injecting as much fuel as possible therefore boosting the boost. Or did I get this wrong too?
Cheers.
Olivier
The ECU does not inject more fuel than it is programmed to. The pump is also physically unable to pump much more fuel than it usually does.
Fuel mixture does not matter on a diesel. Lean is just lack of power, and rich is just annoying smoke. The engine will not be damaged by that. And the ECU does not run a feedback loop to control it, since it's so unimportant.
A boost controller is a valve usually used with a pressure operated wastegate, which is closed by default.
(10-20-2012, 03:20 PM)aaa The ECU does not inject more fuel than it is programmed to. The pump is also physically unable to pump much more fuel than it usually does.
Fuel mixture does not matter on a diesel. Lean is just lack of power, and rich is just annoying smoke. The engine will not be damaged by that. And the ECU does not run a feedback loop to control it, since it's so unimportant.
A boost controller is a valve usually used with a pressure operated wastegate, which is closed by default.
(10-20-2012, 04:12 PM)mantahead hi,
any bets on how long this standard turbo is going to last? 26psi?
surely this is a time bomb.
(10-20-2012, 03:20 PM)aaa The ECU does not inject more fuel than it is programmed to. The pump is also physically unable to pump much more fuel than it usually does.
Fuel mixture does not matter on a diesel. Lean is just lack of power, and rich is just annoying smoke. The engine will not be damaged by that. And the ECU does not run a feedback loop to control it, since it's so unimportant.
A boost controller is a valve usually used with a pressure operated wastegate, which is closed by default.
(10-20-2012, 04:12 PM)mantahead hi,
any bets on how long this standard turbo is going to last? 26psi?
surely this is a time bomb.
There is no mixture... boost generation does not directly relate to the fuel injected, if you rev the engine up then that's plenty of exhaust to spin that little turbo and bring the boost up. Leanness will not result in a lack of power in a diesel, there can be way more air than fuel it'll still generate power.
Not really.
If I floor the pedal at a stop, on park, there is no boost as there is no load.
If I floor the pedal on the highway I god a lower gear, higher revs and a bit more boost,
If I floor the pedal on a hill even at low rev, I got massive boost due to the load.
This is my understanding so far. Then to get boost, you need fuel. No fuel, no boost.
But the more I am learning, the more I get a wee confused and the more I want to have a mechanic pump to play as much as I want and no electronic that are buggering me...
Cheers
Olivier
(10-20-2012, 12:31 PM)aaa You do not need 26psi. Pretty sure there's a way to get the responsiveness you got at a lower pressure. I would suggest boost controller that lets you set the pressure where you want it.
(10-21-2012, 10:36 AM)aaa No, a boost controller attaches to a pressure operated wastegate actuator's pressure hose and regulates when it opens. Alternatively the wastegate itself could be adjustable, some of them are difficult to adjust though.
(10-21-2012, 10:36 AM)aaa No, a boost controller attaches to a pressure operated wastegate actuator's pressure hose and regulates when it opens. Alternatively the wastegate itself could be adjustable, some of them are difficult to adjust though.
Hardwire the boost sensor to the throttle position sensor somehow. Where cruising pedal = whatever boost it wants. Or maybe it could just be a switch or relay that hops between cruising boost and full boost depending on pedal position.
Or maybe you can plumb a vacuum reservoir into the stock actuator for faster response from it.
Pretty sure you are overspinning the turbo that way. Looking at the map for the k14, at 1.8bar and 4700rpm you are somewhere between 0.15-0.19 cubic meters per second, over 120k rpm for the turbo. Seems liable to fall apart. If you are curious you can install an intake temp sensor and calculate where you are on the map better based on how hot it gets.
(10-20-2012, 05:06 PM)Olivier Not really.
If I floor the pedal at a stop, on park, there is no boost as there is no load.
If I floor the pedal on the highway I god a lower gear, higher revs and a bit more boost,
If I floor the pedal on a hill even at low rev, I got massive boost due to the load.
This is my understanding so far. Then to get boost, you need fuel. No fuel, no boost.
But the more I am learning, the more I get a wee confused and the more I want to have a mechanic pump to play as much as I want and no electronic that are buggering me...
Cheers
Olivier
(10-20-2012, 05:06 PM)Olivier Not really.
If I floor the pedal at a stop, on park, there is no boost as there is no load.
If I floor the pedal on the highway I god a lower gear, higher revs and a bit more boost,
If I floor the pedal on a hill even at low rev, I got massive boost due to the load.
This is my understanding so far. Then to get boost, you need fuel. No fuel, no boost.
But the more I am learning, the more I get a wee confused and the more I want to have a mechanic pump to play as much as I want and no electronic that are buggering me...
Cheers
Olivier
hi,
as long as the standard boost control valve is wired up it will not cause you a problem, you can then fit boost controller.
I dyno 368bhp with standard ecu and as long as i kept the standard valve, just blocked the pipe off that went to the wastegate, the ecu was ok.
Thank you very much for the info and to the great people that have the patience to bare with me on this and all my questions
The stock turbo is a no go then, better leave it alone...
Matanhead, you got 368 just with a bigger turbo, no remap, no bigger elements?
I might get a Scania Turbo, from a bus...
I think the writing on it were:
Garett 0.5 or Garett 5.
It had no wastegate.
The back wheel is big This should stop the back-pressure been a bugger
Any imput on this Scania turbo, would that be OK for the 606 stock? Or do I still need the whole thingy, Re-map and bigger elements?
Dunno what to do about the wastegate tho, might put a dump valve on the AIT..
Again thank you all
(10-22-2012, 12:15 PM)Olivier Thank you very much for the info and to the great people that have the patience to bare with me on this and all my questions
The stock turbo is a no go then, better leave it alone...
Matanhead, you got 368 just with a bigger turbo, no remap, no bigger elements?
I might get a Scania Turbo, from a bus...
I think the writing on it were:
Garett 0.5 or Garett 5.
It had no wastegate.
The back wheel is big This should stop the back-pressure been a bugger
Any imput on this Scania turbo, would that be OK for the 606 stock? Or do I still need the whole thingy, Re-map and bigger elements?
Dunno what to do about the wastegate tho, might put a dump valve on the AIT..
Again thank you all
(10-22-2012, 12:15 PM)Olivier Thank you very much for the info and to the great people that have the patience to bare with me on this and all my questions
The stock turbo is a no go then, better leave it alone...
Matanhead, you got 368 just with a bigger turbo, no remap, no bigger elements?
I might get a Scania Turbo, from a bus...
I think the writing on it were:
Garett 0.5 or Garett 5.
It had no wastegate.
The back wheel is big This should stop the back-pressure been a bugger
Any imput on this Scania turbo, would that be OK for the 606 stock? Or do I still need the whole thingy, Re-map and bigger elements?
Dunno what to do about the wastegate tho, might put a dump valve on the AIT..
Again thank you all
(10-22-2012, 01:58 PM)Siekkinen 368 with stock elements could be possible but everything must be really well sized and injection time is way too long. Torque won't be too big either.
(10-22-2012, 01:58 PM)Siekkinen You may not need a wastegate with that turbo and stock elements I think it will spool up slowly and it can't make too much pressure.
(10-22-2012, 01:58 PM)Siekkinen But anyway you have to make/buy new exhaust manifold for that turbo so you can put an external wastegate to it. Make good tube manifold where all the pipes are same lenght.
(10-22-2012, 01:58 PM)Siekkinen After driving for a while with that setup you may want to buy bigger elements and re-map your car for better performance.
(10-22-2012, 01:58 PM)Siekkinen 368 with stock elements could be possible but everything must be really well sized and injection time is way too long. Torque won't be too big either.
(10-22-2012, 01:58 PM)Siekkinen You may not need a wastegate with that turbo and stock elements I think it will spool up slowly and it can't make too much pressure.
(10-22-2012, 01:58 PM)Siekkinen But anyway you have to make/buy new exhaust manifold for that turbo so you can put an external wastegate to it. Make good tube manifold where all the pipes are same lenght.
(10-22-2012, 01:58 PM)Siekkinen After driving for a while with that setup you may want to buy bigger elements and re-map your car for better performance.
Is the 368 the Garett turbo?
I have advanced the timing injection already, would that help/ not?
-No, I ment horsepower injection timing won't help cause when you increase a fuel amount, injection goes longer and longer. Bigger elements injects same amount faster and burning will be better.
Oh dear, you mean not enough boost
What can I do... I cannot win on a wee budget
- With big turbine housing, big turbine wheel and too small elements you can't make much boost. On the other hand you don't need so much boost to burn all the fuel that those elements inject.
Dunno how I'll do that?
- Then you should buy one. I think that someone there makes those but in Finland is one good shop that makes them. http://www.kkdmotorsport.com/kauppa.php?k=1270679050 there. "Mersu" means mercedes
You mean after driving the slug...
-When you tune up your car, anything isn't enough
What is wrong with this Turbo? To big and it need a lot of fuel to spool?
Would an Xh35 os the T4/T4 be alot better?
Cheers
- Hx35 would be lot faster to spool up. It's a good choise for anything between 250-400 bhp.
Thank you for all the reply
Got it, Mersu:
http://www.kkdmotorsport.com/kauppa.php?...1270679050
Gosh, this is dear...
I asked those guys but they don't do the W210 606
http://www.ebay.co.uk/itm/200SX-S14-S15-...7675.l2557
good prices tho and Shinny
Is there anything I can do with this turbo then, or I just put it on a shelve and look at it sighing...
Is the Hx35 faster as smaller?
Cheers
(10-22-2012, 03:47 PM)Olivier Thank you for all the reply
Got it, Mersu:
http://www.kkdmotorsport.com/kauppa.php?...1270679050
Gosh, this is dear...
I asked those guys but they don't do the W210 606
http://www.ebay.co.uk/itm/200SX-S14-S15-...7675.l2557
good prices tho and Shinny
Is there anything I can do with this turbo then, or I just put it on a shelve and look at it sighing...
Is the Hx35 faster as smaller?
Cheers
(10-22-2012, 03:47 PM)Olivier Thank you for all the reply
Got it, Mersu:
http://www.kkdmotorsport.com/kauppa.php?...1270679050
Gosh, this is dear...
I asked those guys but they don't do the W210 606
http://www.ebay.co.uk/itm/200SX-S14-S15-...7675.l2557
good prices tho and Shinny
Is there anything I can do with this turbo then, or I just put it on a shelve and look at it sighing...
Is the Hx35 faster as smaller?
Cheers
Thanks
English isn't my first language as well and I am sure I am confusing few with my writing
What I meant was, does the Hx35 got a smaller wheel that spin the turbo at the exhaust , then this is why its faster? Or its just build differently and more adapted then a Turbo from Bus ?
I need to find another bus...
Even if the manifold last a year, at least I could try but no, they don't even want me to do so
is this what will happen if I manage to install the Garett? No spooling, or very little?
I cannot find anything of the 368 by the way
http://www.youtube.com/watch?v=xqB-7csefVc
Oliver, you might want to do some costings before you go getting too excited here as it sounds like you're on a tight budget. Unless you get your pump modified nothing is going to give you big power and to get the pump done is around a 1000 euros. So you have manifold, turbo, pump and remap along with a load of other bits and pieces. Being economical I can't see you doing it for under £2000 maybe £1500 if you're really economical or drop your HP goals.
If you head over to the garret website there is some really good info on how turbos work and how to size them along with reading the pressure graphs. Download the catalogue http://www.turbobygarrett.com/turbobygar...uctcatalog as the start of it has all the info. After reading that you will have a better understanding on why you need the proper sized turbo and stuff.
Hi Mark,
Thank you for that
I was expecting around £1500 indeed, but as I am in a really tight budget at the moment, hoping it'll get better in the future, the I am shopping to see what is needed /best, see how things work ( I thought for a long time the back pressure was at the end of the turbo- the back- and not before the turbo sshhh, don't tell ) and what can be done now for now, and cheap
I thought the turbo was the biggest restriction, with the back pressure, small wheels and all, then hunted a big turbo, but I might have it too big to start .but gosh I like the idea of a bus turbo
I was planning on a manual pump too, not an EDC.
With a manual pump, there is no need for a remap I was told, woohoo!! Then good power and less electronic and cheaper , but the electronics are looking like hard to bypass and all..then it seems its going to be an EDC after all if I decided on the pump and a remap
Anyway, If I got the Scania turbo, this will give me something to do about the manifold and from there we'll see what will happen.
I saw somewhere someone using plumbing pipes to construct the manifold ( Heresy?) and it sound like something I could do on the cheap side and solid enough to start with, then from that I can move on
Olivier
(10-22-2012, 06:12 PM)Olivier I was planning on a manual pump too, not an EDC.
With a manual pump, there is no need for a remap I was told, woohoo!! Then good power and less electronic and cheaper , but the electronics are looking like hard to bypass and all..then it seems its going to be an EDC after all if I decided on the pump and a remap
Anyway, If I got the Scania turbo, this will give me something to do about the manifold and from there we'll see what will happen.
I saw somewhere someone using plumbing pipes to construct the manifold ( Heresy?) and it sound like something I could do on the cheap side and solid enough to start with, then from that I can move on
Olivier
(10-22-2012, 06:12 PM)Olivier I was planning on a manual pump too, not an EDC.
With a manual pump, there is no need for a remap I was told, woohoo!! Then good power and less electronic and cheaper , but the electronics are looking like hard to bypass and all..then it seems its going to be an EDC after all if I decided on the pump and a remap
Anyway, If I got the Scania turbo, this will give me something to do about the manifold and from there we'll see what will happen.
I saw somewhere someone using plumbing pipes to construct the manifold ( Heresy?) and it sound like something I could do on the cheap side and solid enough to start with, then from that I can move on
Olivier
Thank you very much for that There is hope on the cheaper side then...
I was told the gearbox need a TPS? If its a wire pump, the TPS will be out?
Reckon it would still work?
Perhaps olefejer and its manual shift might help?
About the wastegate, what is the housing for it? The Turbo come with a large output that got a butterfly? valve in it.
When I get the Scania Turbo I'll put some picture of it, the piping and what I got
I am thinking of asking the owner for the exhaust manifold as well, its also a 6 pod on line, but a lot longer manifold , but it might be handy to have it to tinker with?
All the best
Olivier
(10-23-2012, 12:53 PM)Olivier Thank you very much for that There is hope on the cheaper side then...
I was told the gearbox need a TPS? If its a wire pump, the TPS will be out?
Reckon it would still work?
Perhaps olefejer and its manual shift might help?
About the wastegate, what is the housing for it? The Turbo come with a large output that got a butterfly? valve in it.
When I get the Scania Turbo I'll put some picture of it, the piping and what I got
I am thinking of asking the owner for the exhaust manifold as well, its also a 6 pod on line, but a lot longer manifold , but it might be handy to have it to tinker with?
All the best
Olivier
(10-23-2012, 12:53 PM)Olivier Thank you very much for that There is hope on the cheaper side then...
I was told the gearbox need a TPS? If its a wire pump, the TPS will be out?
Reckon it would still work?
Perhaps olefejer and its manual shift might help?
About the wastegate, what is the housing for it? The Turbo come with a large output that got a butterfly? valve in it.
When I get the Scania Turbo I'll put some picture of it, the piping and what I got
I am thinking of asking the owner for the exhaust manifold as well, its also a 6 pod on line, but a lot longer manifold , but it might be handy to have it to tinker with?
All the best
Olivier
Hi Siekkinen and thank you for the output/ inputs...
Hummm... Then its an electronic pump, with the remap and all because of the gearbox
The Scania Bus manifold it indeed larger/ wider and all... But indeed might/ could help? If it can be shorten and bolted in that would be even better
About the wastegate housing, I don't know how to make one as this one has none and it was still attached to a large pipe going though the exhaust and I was planning on using it to connect the turbo to the Cat...
Is there any "attachments that would bolt into this particular turbo with a wastegate already build? Again I'll send some pictures of the turbo on Thursday if I got it.
Does anyone think a dump valve on the manifold instead of a wastegate on the exhaust is also a practical idea? Might be alot easier...
Thank you
Olivier
(10-23-2012, 01:30 PM)Olivier Hi Siekkinen and thank you for the output/ inputs...
Hummm... Then its an electronic pump, with the remap and all because of the gearbox
The Scania Bus manifold it indeed larger/ wider and all... But indeed might/ could help? If it can be shorten and bolted in that would be even better
About the wastegate housing, I don't know how to make one as this one has none and it was still attached to a large pipe going though the exhaust and I was planning on using it to connect the turbo to the Cat...
Is there any "attachments that would bolt into this particular turbo with a wastegate already build? Again I'll send some pictures of the turbo on Thursday if I got it.
Does anyone think a dump valve on the manifold instead of a wastegate on the exhaust is also a practical idea? Might be alot easier...
Thank you
Olivier
(10-23-2012, 01:30 PM)Olivier Hi Siekkinen and thank you for the output/ inputs...
Hummm... Then its an electronic pump, with the remap and all because of the gearbox
The Scania Bus manifold it indeed larger/ wider and all... But indeed might/ could help? If it can be shorten and bolted in that would be even better
About the wastegate housing, I don't know how to make one as this one has none and it was still attached to a large pipe going though the exhaust and I was planning on using it to connect the turbo to the Cat...
Is there any "attachments that would bolt into this particular turbo with a wastegate already build? Again I'll send some pictures of the turbo on Thursday if I got it.
Does anyone think a dump valve on the manifold instead of a wastegate on the exhaust is also a practical idea? Might be alot easier...
Thank you
Olivier
Thank you very much
Its in the UK too, easy to contact them.
What is my Scania Turbo then, is it a T3/T4 or a 638 or they all the same?
Is this the wastegate needed? It says 38mm. From the same seller too
http://www.ebay.co.uk/itm/38MM-WASTEGATE...5d28ba04ca
Where would the gases flow?
I'll call them tomorrow see what they say
All the best
Olivier
(10-23-2012, 02:17 PM)Olivier Thank you very much
Its in the UK too, easy to contact them.
What is my Scania Turbo then, is it a T3/T4 or a 638 or they all the same?
Is this the wastegate needed? It says 38mm. From the same seller too
http://www.ebay.co.uk/itm/38MM-WASTEGATE...5d28ba04ca
Where would the gases flow?
I'll call them tomorrow see what they say
All the best
Olivier
(10-23-2012, 02:17 PM)Olivier Thank you very much
Its in the UK too, easy to contact them.
What is my Scania Turbo then, is it a T3/T4 or a 638 or they all the same?
Is this the wastegate needed? It says 38mm. From the same seller too
http://www.ebay.co.uk/itm/38MM-WASTEGATE...5d28ba04ca
Where would the gases flow?
I'll call them tomorrow see what they say
All the best
Olivier
Actually, I don't do black smoke, I run the car on vegetable oil I can smell tho
Maybe I'll get more of a chippy scent then if the exhaust come out
This sound a bit like the EGR set up I was thinking off with the gases coming out to ease the back pressure
Thank you for all the inputs
Great to know what the options are .
It'll be easier on Thursday if I got the turbo on front of me and send out some pictures
From what I recall, the exhaust flange was really big, well, compare to the wee one on the car
Olivier
(10-23-2012, 03:07 PM)Olivier Actually, I don't do black smoke, I run the car on vegetable oil I can smell tho
Maybe I'll get more of a chippy scent then if the exhaust come out
This sound a bit like the EGR set up I was thinking off with the gases coming out to ease the back pressure
Thank you for all the inputs
Great to know what the options are .
It'll be easier on Thursday if I got the turbo on front of me and send out some pictures
From what I recall, the exhaust flange was really big, well, compare to the wee one on the car
Olivier
(10-23-2012, 03:07 PM)Olivier Actually, I don't do black smoke, I run the car on vegetable oil I can smell tho
Maybe I'll get more of a chippy scent then if the exhaust come out
This sound a bit like the EGR set up I was thinking off with the gases coming out to ease the back pressure
Thank you for all the inputs
Great to know what the options are .
It'll be easier on Thursday if I got the turbo on front of me and send out some pictures
From what I recall, the exhaust flange was really big, well, compare to the wee one on the car
Olivier
I do use Vegetable oil
Cheap as chips...
Run OK tho
At the moment its a mixed of WVO ( 90+%) , missfuel ( more diesel then petrol) and a squirt of WD40, Heresy I know
It'll be better back to the exhaust in the cat, the vegetable oil doesn't smell much with a cat , without its a different story...
This is it, the turbine housing on the exhaust side was looking huge... EEK! Oh dear
To be continued
Got the turbo type
its a Garrett TO4E06 for Scania
http://www.turbomaster.info/eng/search.p...referencia
From a 9 liters engine
Oh dear...
(10-30-2012, 08:05 AM)Olivier Got the turbo type
its a Garrett TO4E06 for Scania
http://www.turbomaster.info/eng/search.p...referencia
From a 9 liters engine
Oh dear...
(10-30-2012, 08:05 AM)Olivier Got the turbo type
its a Garrett TO4E06 for Scania
http://www.turbomaster.info/eng/search.p...referencia
From a 9 liters engine
Oh dear...
Funny you said this as today I put the turbo at the end of the exhaust pipes, not properly sealed as exhaust gases were going everywhere, but I was wondering if it'll spool a little at idle, and it did
OK, only a really really slow spooling, but its turning at idle, then there might be some hope...
Not sure tho, the manifold seems to be a bugger. I would love just to try it to see how it goes.
I think you might be lucky to get that to spool for christmas to be honest. A rough calculation has you moving 2 thirds of the gasses than on the scania moving the revs up obviously. Moving the figures around I predict it to start spooling somewhere around 3k-3.5k. If its for racing then you might could put up with it but on the street it will be pretty horrible I think. It might not even hold pressure since the original output of the scania is only 221 bhp so it can move air but it isnt expected to pressurise by much.
If your going to have to make a manifold I think you would be better going a proven route than something on paper anyway doesn't work very well.
(10-20-2012, 11:42 AM)Olivier I found out that if I lock( totally shut off) the wategate, I can go up to 26 PSI and the car is more responsive, until the ECU freak out and kill the boost for about a second ( on the highway at a continuous trashing).
Then its 24 ish or 26 ( depend on the load I guess?) , killed for about a second at 17 and back again at 24...
A bit yo-yo style...
(10-20-2012, 11:42 AM)Olivier I found out that if I lock( totally shut off) the wategate, I can go up to 26 PSI and the car is more responsive, until the ECU freak out and kill the boost for about a second ( on the highway at a continuous trashing).
Then its 24 ish or 26 ( depend on the load I guess?) , killed for about a second at 17 and back again at 24...
A bit yo-yo style...
Thank you aaa, as some were saying that if the transducer was connected the ECU should be OK, I thought the pump was having difficulty delivering all the fuel especially as it happen between 24 and 26 PSI, not as a set number, it varied, I think depending on the load ( down hill or up hill) and I guess the more load the more fuel needed?
Cheers
Olivier
I would think fuel starvation would be more gradual and not jump suddenly. Keep in mind that's there are two pumps, the lift pump on the side of the main pump is what supplies fuel to the rest of the pump, sometimes the lift pump can't keep up with rest of the pump. It'd be easy to plumb a pressure gauge between the two though.
Of course I still don't think it's actually delivering as much fuel as you think .