Laggy HE351 with plenty of fuel???
Just put an HE351 from a '07 CR truck on my '01 24v along with a set of DDP 110 horse injectors. At the moment I have the wastegate totally plugged off (hose pinched shut) and I even shortened the WG actuator rod a few threads to preload the spring inside it. Problem is that the truck won't build much boost at lower RPMs, and I cannot for the life of me get it to push over 34# at WOT. I've read that this turbo should get over 40# fairly easily. Truck has plenty of fuel, and I have leak tested the intake system and it is good. As of now, the turbo still has the factory WG actuator switch installed in the housing, and I have verified that there is no boost leaking passed it. I do have the plug to replace the actuator switch from ATS ordered, but it's not here yet. Plus, I don't think that is where my problem lies anyways. I just got it to make things look cleaner.
EGT's get hot real quick, and it smokes like a short order cook on a lunch break - even with the Juice turned off. It feels really laggy, and it's pretty tough to tow anything with it and keep it cool. I'd figure that this turbo (60/60/9) should spool almost as fast as the HY35 I took off (especially with the bigger injectors,) but it sure doesn't feel like it is.:td: Any suggestions? |
Use a pair of vise grips or some wire and hold the waste gate shut. It still might be blowing open.
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Too much fuel for the turbo
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Originally Posted by Red_Rattler
(Post 597552)
Too much fuel for the turbo
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Originally Posted by bryson
(Post 597585)
Maybe, but that wouldn't be part of my lag or low top-end boost problem, would it? Doesn't more fuel help the turbo spool faster?
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Originally Posted by cummins freak
(Post 597667)
yes to a point but IIRC there is a point where you just flood out a turbo and it does no good. did ya run the HY with all your mods
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Originally Posted by Red_Rattler
(Post 597552)
Too much fuel for the turbo
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too much fuel can flood the turbo out and make it not spool
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I realize I may be a bit overfueled, but do you guys think 110s are enough to do this? I've read of people running 500 hp sticks with this turbo and making it driveable...
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Its probably the 9cm housing that is killing you, choking the exhaust side. Drive pressure is probably through the roof! I went from a 9cm HY35 to a 12cm HX35 and the benefits were great all around.
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