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+--- Thread: OM617 more power at low RPM (/showthread.php?tid=5046)
OM617 more power at low RPM - rdavisinva - 10-24-2013
So the OM617 has beein installed in out Land Rover 110 for just over a year now and it runs very well.
The turbo is clocked and installed with the small Land Rover TDI intercooler.
Would like a little more power at lower RPMs, so was thinking of adding a VGT in place of the stock turbo.
Did a quick search and didn't see much on the OM617 VGT... could have missed it, but was looking for something cheap to start with that could be pulled off an engine at a junk yard or pick-n-pull and then work up to buying a new model after it is proven to be a positive upgrade.
Thoughts?
RE: OM617 more power at low RPM - aaa - 10-24-2013
GT2256v sounds like what you're looking for. Small easy to find VNT turbo (from the Sprinter vans).
Whats your tranmission setup? With the an automatic mercedes transmission I would simply use the higher-stall torque converter which lets the stock turbo spool up easily. Got a boost gauge to see what your turbo is doing now?
RE: OM617 more power at low RPM - Simpler=Better - 10-24-2013
No need for a new turbo, junkyard ones are A-OK so long as there's no shaft play
2056v is a little smaller, can be found on Jeep liberty CRDs. Also known as the "M53" turbo
Is your ALDA tuend?
Have you advanced your timing?
You can also tweak the guts of your pump (I believe)
RE: OM617 more power at low RPM - CRD4x4 - 10-24-2013
X2 on the Garrett GT2256v off of sprinter vans.
I've seen them for sale for as low as $37.50 with zero shaft play (electronics overheat & its "cheaper to replace the entire unit".
The 2056 is a little scarce in the USofA as they only came on Jeep KJ Liberty (Cherokee) 2005-06.
I'm interested in upgrading my 2056 but I'm still saving for a superpump.
RE: OM617 more power at low RPM - raysorenson - 10-24-2013
Check this guy's thread out. Good VNT stuff on a 617.
http://www.superturbodiesel.com/std/Thread-Syncro-s-mechanical-VNT-project
RE: OM617 more power at low RPM - rdavisinva - 10-28-2013
Thanks to all of you for the replies.
The transmission is currently a manual 5 speed LT77 which will be upgraded in the future to the R380 5 speed.
The pump including ALDA has not been tuned nor the timing set.
I understand that tuning will help, but was initially more concerned about the lack of boost at low RPMs thinking it was a no-brainer to locate a VNT that would provide some boost at lower RPM.
I'll check out the link raysorenson provided and probably have a few more questions.
Saw this on eBay:
http://www.ebay.com/itm/MERCEDES-BENZ-SPRINTER-TURBO-CHARGER-USED-/400580113855?pt=Motors_Car_Truck_Parts_Accessories&hash=item5d446f75bf&vxp=mtr
This looks OK with a broken electronics box, but looks pricy compared to the cheap ones mentioned.
RE: OM617 more power at low RPM - larsalan - 10-28-2013
To me the stock turbo will come on very quick if alda is maxed. My alda is delete and straight exhaust, can hear turbo even at idle.
RE: OM617 more power at low RPM - DeliveryValve - 10-28-2013
(10-28-2013, 03:13 PM)rdavisinva ....
Saw this on eBay:
http://www.ebay.com/itm/MERCEDES-BENZ-SPRINTER-TURBO-CHARGER-USED-/400580113855?pt=Motors_Car_Truck_Parts_Accessories&hash=item5d446f75bf&vxp=mtr
This looks OK with a broken electronics box, but looks pricy compared to the cheap ones mentioned.
I don't think I ever seen a GT2256v on sale for less that $150.00.
I do have a vacuum actuated unit for sale, but it is quite a bit more than $150.
.
RE: OM617 more power at low RPM - MFSuper90 - 10-28-2013
(10-28-2013, 05:11 PM)larsalan To me the stock turbo will come on very quick if alda is maxed. My alda is delete and straight exhaust, can hear turbo even at idle.
My hx30 singggs! My buddy said at the dyno competition I should have won an award for loudest turbo
RE: OM617 more power at low RPM - raysorenson - 10-29-2013
Even with a 100:1 or better crawl ratio and 35" tires, I've seen people say an OM617 has room for improvement in the low rpm torque department. I'm thinking 5psi by 1200-1300 rpm would make a nice crawler engine.
RE: OM617 more power at low RPM - bricktron - 10-29-2013
where have you guys found wrecked sprinters?
RE: OM617 more power at low RPM - MFSuper90 - 10-29-2013
So why not supercharge?
RE: OM617 more power at low RPM - aaa - 10-29-2013
Also check the surge line on the GT22, I imagine you'd be cutting it close below 1500rpm.
Can't you just get shorter gearing?
RE: OM617 more power at low RPM - rdavisinva - 10-29-2013
Currently running 3.54 gears with a 1.4 transfer case.
At first had a 1.6 transfer case, but the gearing was too low.
Will have to check out the pump adjustment, but think some low end boost would greatly help.
RE: OM617 more power at low RPM - winmutt - 10-30-2013
Have you simply tried adjust torque limiter?
RE: OM617 more power at low RPM - rdavisinva - 10-31-2013
No have not made any adjustments, but by coincidence looked at this thread last night which also mentions the torque limiter:
http://turbobricks.com/forums/showthread.php?t=235245&page=2
While I need schooling on the OM617 IP adjustments, do lots of mechanical work, so it must be time to dive in.
There were some threads here on IP adjustment I looked at a while back.
MY setup has a small intercooler so that should help cool the intake charge.
RE: OM617 more power at low RPM - Simpler=Better - 10-31-2013
You have to be patient to find a cheap turbo. I paid $120 shipped for my 2056V on ebay
RE: OM617 more power at low RPM - raysorenson - 10-31-2013
Here's a copy of OM616's MW tuning document, penned by him. You probably won't find better info than this.
https://docs.google.com/document/d/1NavsR2Omiur1WTJtJNr4BDsiP-cuSYuw9yupWNJ1HNc/edit
RE: OM617 more power at low RPM - carlitosgy6 - 10-31-2013
if you max the alda you will get faster boost and more low end torque,i was using a garret stock turbo and i replaced it for a kkk k26 stock turbo ,for me it works better,lower rpm boost got better and its sounds beautiful
RE: OM617 more power at low RPM - rdavisinva - 11-01-2013
Thanks for all the suggestions... so many mechanical opportunities, so little time!
RE: OM617 more power at low RPM - willbhere4u - 11-01-2013
(10-31-2013, 04:42 PM)carlitosgy6 if you max the alda you will get faster boost and more low end torque,i was using a garret stock turbo and i replaced it for a kkk k26 stock turbo ,for me it works better,lower rpm boost got better and its sounds beautiful
Ditto alda maxed and the factory kkk26 turbo any you've got great power by 2k
my dads 84 300d was a rocket out of the lights to about 40mph I also had the non EGR manifolds on it for him
RE: OM617 more power at low RPM - ronnie - 11-01-2013
in short hand, no fuel, no boost
RE: OM617 more power at low RPM - carlitosgy6 - 11-02-2013
(11-01-2013, 04:33 PM)willbhere4u(10-31-2013, 04:42 PM)carlitosgy6 if you max the alda you will get faster boost and more low end torque,i was using a garret stock turbo and i replaced it for a kkk k26 stock turbo ,for me it works better,lower rpm boost got better and its sounds beautiful
Ditto alda maxed and the factory kkk26 turbo any you've got great power by 2k
i feel a difference accelerating from 70 to 80,it takes longer but before that i just feel it better
RE: OM617 more power at low RPM - Captain America - 11-15-2013
(10-24-2013, 05:59 PM)aaa GT2256v sounds like what you're looking for. Small easy to find VNT turbo (from the Sprinter vans).
Whats your tranmission setup? With the an automatic mercedes transmission I would simply use the higher-stall torque converter which lets the stock turbo spool up easily. Got a boost gauge to see what your turbo is doing now?
I love the high stall (25-2700 RPM) converter!
RE: OM617 more power at low RPM - DirtDiesel - 11-15-2013
has anybody tried a quick spool valve and do they work?
RE: OM617 more power at low RPM - Grecy - 11-15-2013
Do you have a link to your build thread or pics of the 617 in the 110? That's awesome!
What kind of mileage are you getting?
-Dan
RE: OM617 more power at low RPM - MFSuper90 - 11-15-2013
(11-15-2013, 02:16 PM)DirtDiesel has anybody tried a quick spool valve and do they work?
Quick spool valves only work on divided housing turbos. They shut exhaust off one scroll of the turbine and divert it to the larger side of the turbine wheel. As far as I know all the turbos discusses in this thread are open scroll