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+--- Thread: 606 supercharger + turbo (/showthread.php?tid=6172)
606 supercharger + turbo - gary andrews - 01-26-2015
hi I'm just finishing putting in a 605 into a disco 2 then i want to fit a 606 in my off road buggy with 7.5 elements and possibly a eaton supercharger and a turbo possibly a hx35 or similar .i can fabricate all the mounts manifold etc,what i don't know is can i just take the pressure side of the eaton and put into the turbo and how much hassle tuning would it be. not looking for loads of top end but low down quick off the mark power. only just started on diesels so don't know too much about them so help would be good cheers gary
RE: 606 supercharger + turbo - F.R.A.S - 01-26-2015
Why no just a small bell bearing turbo or the Eaton? If you decide to go compound you should really go Eaton for down low grunt and big turbo for top end. Like a HX50 or something in that size.
What we have been talking about recently is that the Eaton steals a lot off power from the crank if you feed it compressed air. Therefore you should have some kind of valve that actuate on boost and sends the boost directly to the intake instead of via the Eaton. And no you can't suck trough the Eaton you will have to suck trough the turbo.
If I where you and only cared about fast response and down low grunt I would go Eaton only and make sure to rev it accordingly to my needs.
RE: 606 supercharger + turbo - gary andrews - 01-26-2015
thanks, sounds easier with just a eaton what max power could i get with just a 90 or 112
RE: 606 supercharger + turbo - NZScott - 01-26-2015
What's wrong with the blower feeding the turbo?
RE: 606 supercharger + turbo - Hario' - 01-27-2015
When the turbo spools its airflow requirement greatly increases but as the eaton flows air linearly it will become a restriction.
i.e. to draw through the eaton it would need a varying gear ratio to the crank and then gear up as the turbo spooled and airflow increases (not practical).
Although Mercedes made a multi-gear supercharger drive on some racing car from the 1900's IIRC..
RE: 606 supercharger + turbo - Petar - 01-27-2015
But what about a one way valve parallel to the supercharger ? Like one of those audi 3.0 tdi compressor bypass valves.
That would fix the problem, the supercharger would effectively freewheel once the turbo spools.
RE: 606 supercharger + turbo - Hario' - 01-27-2015
The only downside to those bypasses is the sucktion required to open them makes the turbo compressor less efficient, if you don't intend to compound then pipe the SC with it's own airfilter to the inlet manifold, parallel with the turbo, and fit an electromag clutch on the SC drive, eaton is PD so there would be no pressure leakage from the turbos air
RE: 606 supercharger + turbo - F.R.A.S - 01-27-2015
M90 would give you 250-300hp, M112 300-350hp.
(01-26-2015, 06:48 PM)gary andrews thanks, sounds easier with just a eaton what max power could i get with just a 90 or 112
RE: 606 supercharger + turbo - gary andrews - 01-27-2015
(01-27-2015, 12:23 PM)F.R.A.S M90 would give you 250-300hp, M112 300-350hp.
(01-26-2015, 06:48 PM)gary andrews thanks, sounds easier with just a eaton what max power could i get with just a 90 or 112
cool that sounds the way forward for me would there be a disadvantage with the 112 over the 90 as 300-350 hp sounds just right for me and not to much lag. do you think 4-1 on the pulley size would be about right as you stated on other post, thanks again for your time
RE: 606 supercharger + turbo - F.R.A.S - 01-27-2015
They have different rev limit and I don't have on top off my head. I know the Eaton M90 maxes out at 21.000rpm, divide that by 4 and you get 5250rpm, witch is good for most people. However if you are reaching rev limit a couple of times a minute while driving you should have a lower gearing.
M112 or M90
choose who ever you like. They both have pros and cons...(01-27-2015, 12:53 PM)gary andrews cool that sounds the way forward for me would there be a disadvantage with the 112 over the 90 as 300-350 hp sounds just right for me and not to much lag. do you think 4-1 on the pulley size would be about right as you stated on other post, thanks again for your time
RE: 606 supercharger + turbo - Hario' - 01-27-2015
I would choose the largest displacement blower available to allow you to gear it as low as possible for a given pressure / rpm, as Eaton's efficiency typically drops PFF as revs rise. Looking at the map would help also lol..
RE: 606 supercharger + turbo - NZScott - 01-27-2015
As other have said, I was thinking a bypass valve, but actuated like a wastegate
There are M122's that caught my eye for my 617:
http://www.ebay.com/itm/GENUINE-OEM-EATON-M122-FORD-MUSTANG-SHELBY-GT500-SUPERCHARGER-5-4L-V8/291276295571
When you look at the price going for new M90s, that M122 seems pretty good to me.
Unfortunately I've found zero info on the 122 dimension wise as they all point to the 112.
RE: 606 supercharger + turbo - Edian727 - 01-28-2015
theres a member on here who has a super turbo combo. dyno sheet on his build thread that includes super-turbo, just turbo, or just supercharger. looks like almost 400 with just supercharger. dont know how much fuel he has though. i do believe it's a m112.
http://www.superturbodiesel.com/std/Thread-500BHP-DRIFT-PROJECT?page=4
RE: 606 supercharger + turbo - mantahead - 01-28-2015
(01-27-2015, 06:30 AM)Hario When the turbo spools its airflow requirement greatly increases but as the eaton flows air linearly it will become a restriction.
i.e. to draw through the eaton it would need a varying gear ratio to the crank and then gear up as the turbo spooled and airflow increases (not practical).
Although Mercedes made a multi-gear supercharger drive on some racing car from the 1900's IIRC..
whats wrong with a divertor flap?
![[Image: 15038084406_33f213f38f_b.jpg]](https://farm4.staticflickr.com/3849/15038084406_33f213f38f_b.jpg)
502bhp turbo only
469.5 with supercharger and turbo
396 low boost run with supercharger and turbo
so about 30bhp to run the eaton, not bad as i can't feel any turbo lag when driving.
RE: 606 supercharger + turbo - Tito - 01-28-2015
How did you wire up your diverter flap Mantahead? I'll also be trying a supercharger and turbo combo. I was thinking supercharger into turbo, then measure boost before turbo. When pre-turbo boost hits >0 open diverter flap to let the turbo breath easy
RE: 606 supercharger + turbo - mantahead - 01-28-2015
my flap is open when the engine switches off, with gravity, then it blows shut when engine starts, so the turbo doesn't really have to suck it open(no restriction to turbo)it will fall open when the pressure changes as turbo sucks more than supercharger blows. it will open nice and slow, so change over is nice and smooth.
RE: 606 supercharger + turbo - Tito - 01-28-2015
That sounds easy and genius. Care to share some pic's? I was thinking using a 96mm throttle body hooked up to a waste gate actuator or something
RE: 606 supercharger + turbo - gary andrews - 01-29-2015
so I've got a eaton 112 going to run on it own first see how that goes,any tips please jump in cheers