I also thought the aftercooler was a restriction so I drilled/tapped and installed my boost probe pre-aftercooler. No difference in boost readings.In my Jeep I am getting at 45mph 4 psi of boost and around 800°F at 65 6psi around 1000°F +/- 100°F. At WOT easily 1400°F :nuke: for a very short period. I currently have the Water Charge Air Cooler on the engine plumbed into the engine. I very rarely see the engine temp above 165°F . I have a air to air charge cooler that I am getting it modified so it will fit my Jeep and that should be less restriction and better flowing than the Water Charge Air Cooler. With my turbo upgrades I think the Water Cooler is restricting the intake of air also creating a high EGT..
I also run the cpl 857 and had similar troubles in the beginning. .... Since then: 12cm turbine housing, 56mm compressor wheel and housing, timing advanced a hair over 1mm, AFC diaphragm maxed, 3/4 turn on star wheel, 1 turn on full fuel screw. My truck weighs a verified 6200lbs, and has aerodynamics similar to a brick. 65mph on level ground is
775*, 55mph is about 650*, max throttle 1100* at 32lbs boost. If I can help more let me know.
What the hell???i run about 6-700 crusing at 65-70 on the highway, goes up to 700-750 when i cruise 70-75. Goes up on hills, but not a whole lot.
this is unloaded at around 5klbs, give or take.
Most guys here are running smaller housings to get more boost. That's why your boost is lower and EGT's higher in the same running conditions.Update:
Turbo is an H1C, 16cm outlet housing, pretty sure it's the right one, judging by how rusted on the mounting nuts were.
16cm is stock, is it not? Working on getting my hands on a 12cm housing.Most guys here are running smaller housings to get more boost. That's why your boost is lower and EGT's higher in the same running conditions.
No those woudl be fine, it's things like gummed up air cleaners and intercoolers that can cause problems but sometimes be hard to find.16cm is stock, is it not? Working on getting my hands on a 12cm housing.
60mph, 5th gear, 1800rpm, 5psi boost, 1000*F.
Noticed some restrictions in the intake tract... Airbox to atmosphere opening is 3.25", hose from airbox lid to turbo is 2.25". Turbo inlet is 3" I believe....
Would this be starving the turbo?