2001 stock Turbo pressures
#1
#2
im getting 31psi before gate opens on a 02 hy35. turbo is not modded at all. and boost pressures dont lag it ramps up evenly with rpm's. Is it the same turbo from your cummins build post. If thats the case you said that you think that motor was ran with out oil well that means the turbo was as well. Just a thought
#3
the turbo is a hx replacement.
I replace the original turbo with another good used one which I installed a bearing and seal kit. the end play and side play toloances are within spec. I think this is an HX version I have the 6-spd manual.
So what you are telling me is the turbo should gradually spool up from idle.
So what you are telling me is the turbo should gradually spool up from idle.
#4
#6
#7
If you check out this page:
2001 ISB engine specs
It list A LOT of the info required for the Cummins engines in your trucks. 20.8PSI for 5 speeds and Autos, 26 PSI for 6 speeds.
2001 ISB engine specs
It list A LOT of the info required for the Cummins engines in your trucks. 20.8PSI for 5 speeds and Autos, 26 PSI for 6 speeds.
#9
With stock fueling if you read further down the page, it says typical WOT boost on a HO is around 20psi. Now if you had it tuned I could see the 25-30psi. But to the OP, I would think you should see more than 15psi.
#10
2001 stock Turbo pressures
What is your exhaust housing diameter. It is casted in your turbo on the exhaust side. I had a 18 cm on my truck stock and did the same thing. Went to a 12 cm and spools up much faster. The bigger the housing the more exhaust gases have to pass through to spool up turbo.