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| ForcedInduction Regular Date registered: Sep 2006 Location: Federal Heights, CO Vehicle(s): 1980 240D 3.0VNT Posts: 89  | GT2256V VNT Turbo on an OM617 Pictures- 1: Start of the project. KKK K26 turbo. 2: EGT probe. 3: The stock return tube after it's been cut. The air filter drain hole can be seen behind it. 4: View of the actuator 5: Finished product Videos: (It sounds much better in person than on my cheapo camera.) Quick tour around the car. Notice the actuator moving and the intake tube expanding when I revv it. Some easy driving. Barely 1/3 throttle application. YouTube seems to not like my full output video. I'll link it when it's done. Just playing around with it a bit. Notes- I cut a bead on the stock intake manifold to keep the tube in place. The turbo works great as a warmup exhaust restriction (I can see this becoming a problem in the summer). There is about 2psi of exhaust pressure and just a *hair* off the peg of boost at idle. There is almost no boost drop between shifts. EGT's still run in the same ranges. I can easily pass 1250*f. Decelerating from highway speeds maintains about 6 psi of boost all the way down to 30mph in 4th gear. The turbo seems hover in the 10psi boost and 10psi exhaust pressure most of the time I'm moving under load. Boost stays around 8psi : 10psi cruising the highway between 55-75mph. Max boost is about 11psi below 3500rpm and peaks at 14psi by 4500rpm. Exhaust pressure at 14psi boost is 20psi. 5psi less than the KKK K26 turbo. Exhaust pressure can pass 30psi on a hard takeoff and free (no-load) revving. I will concede that the GT22V is too small for an OM617. EGT's are still excessive at full load. My main concern is the high initial exhaust pressures (Pegs my 30psi exhaust gauge). I'm worried that it can float the exhaust valves. I don't know at what psi the exhaust valves will lift off their seats. (LMN GT2256V 1 kkk turbo frontS.jpg) (LMN GT2256V 2 EGT probeS.jpg) (LMN GT2256V 3 oil drain modS.jpg) (LMN GT2256V 7 VNT actuator sideS.jpg) (LMN GT2256V 8 DONE VNT sideSs.jpg) Attachments ----------------  LMN GT2256V 1 kkk turbo frontS.jpg (63KB - 26 downloads) LMN GT2256V 2 EGT probeS.jpg (37KB - 19 downloads) LMN GT2256V 3 oil drain modS.jpg (61KB - 16 downloads) LMN GT2256V 7 VNT actuator sideS.jpg (62KB - 15 downloads) LMN GT2256V 8 DONE VNT sideSs.jpg (33KB - 14 downloads) | |
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| ForcedInduction Regular Date registered: Sep 2006 Location: Federal Heights, CO Vehicle(s): 1980 240D 3.0VNT Posts: 89 | RE: GT2256V VNT Turbo on an OM617 Now that YouTube has FINALLY  got my video active, here it is: http://www.youtube.com/watch?v=uLgEnnQaR54 I do a bit of revving to get the turbo going and I get to 60 at the top of 3rd gear.Nothing amazing, it's only about 1/2 second better overall. The video I have is 13.6 seconds 0-60 and the best I can get is 13.2seconds. The roads are still cold/wet so I kept spinning the right rear tire every time I tried to do a serious balls-to-the-wall run. Bandimere Speedway will not be dong it's CSP (Open/Test-N-Tune) races until starting after May-02-2007 (LINK). Sometime after that I'll see about getting an official 1/4mile time slip. Edited by ForcedInduction 2/5/2007 3:21 AM | |
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| Dieselburns Expert  Date registered: May 2006 Location: New York, Long Island Vehicle(s): 78' MB 300D 87 Chief Cherokee Posts: 2251  | ||
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