high boost numbers? / van turbo
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Tuned
Joined: Apr 2004
Posts: 306
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From: San Antonio, TX
high boost numbers? / van turbo
I have heard of other guys with similar mods that I have get 30psi boost, I have only reached 26-27psi. Is this possibly because of a leak or am I needing to upgrade the turbo to reach these numbers? I am on the hunt for a Van Turbo... Is it ok to get a used one from a junkyard or try to find a rebuilt?
Postmaster
Joined: Jun 2005
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From: New Hampshire
Originally Posted by bigpowerstroke
I have heard of other guys with similar mods that I have get 30psi boost, I have only reached 26-27psi. Is this possibly because of a leak or am I needing to upgrade the turbo to reach these numbers? I am on the hunt for a Van Turbo... Is it ok to get a used one from a junkyard or try to find a rebuilt?
Nut
Lead Driver
Joined: Oct 2004
Posts: 7,413
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From: Columbia, MO
My honest opinion is that the boost relief valve you are running will bleed off enough air to not see more than that. I could easily see 30 psi on mine, but I have a regulator on the MAP line, not a relief valve. The regulator won't bleed air out. You could also have some other small boost leaks, perhaps around the boots or even in the intercooler. A few small leaks can add up to several psi of lost boost. However, I wouldn't push that stock turbo past 25 psi. You're risking some good bit of damage to the engine that way due to the backpressure built up before the turbo. You're on the right track by wanting to go to a van turbo. Unless your turbo is shot and in need of replacement, a cheaper option would be to get the 1.15 AN non-wastegated housing from Shop Diesel. That will essentially turn your turbo into a van turbo, and leave you enough money left over to get an ATS housing. Look in my Turbo Upgrades gallery. I'm in the process of doing that exact thing to my truck now.
Post Fiend
Joined: Jul 2005
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From: 21791
Originally Posted by jtharvey
Unless your turbo is shot and in need of replacement, a cheaper option would be to get the 1.15 AN non-wastegated housing from Shop Diesel. That will essentially turn your turbo into a van turbo.
i got mine from shopdiesel also, and it was $399 with shipping. the DieselInnovations turbine outlet adapter was $100.
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Tuned
Joined: Apr 2004
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From: San Antonio, TX
i had found a rebuilt van turbo on ebay that auctioned for 310.00, I wish I would have bid on that one, It looked brand new with the EBPV already there.
BTW jtharvey, did you ever get a EBPV housing from shopdiesel that fit.
BTW jtharvey, did you ever get a EBPV housing from shopdiesel that fit.
Lead Driver
Joined: Oct 2004
Posts: 7,413
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From: Columbia, MO
Originally Posted by bigpowerstroke
BTW jtharvey, did you ever get a EBPV housing from shopdiesel that fit.
The 1.15 exhaust housing combines with the ATS, my surge is GONE!! I'll have more on it in the next couple of days, but from what I can tell I like it and would do it again. 
I'm taking the PSD on a short trip tomorrow though, so I'll be able to evaluate it more then. I'll put up a new post about it later, but it's late, I'm tired, and I've got a long day tomorrow, so I'm off to bed. 
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