linked:
http://www.youtube.com/user/superturbocompoundNot much on the isuzu engine unfortunately.
On the subject of max power and torque from a 4JB1-T what is the max boost pressure people have run? A guy on here says he is running 20psi. Some people think running high boost doesn't actually give much benefit and can damage the engine easily, how does it damage the engine? Why does running high boost not give much benefit?
I have a friend with a 92 ish toyota hilux surf with the 2.4 turbo (2LT) it is on 35inch tyres, beam axle front, he is a diesel mechanic, he is running 25psi in his truck, it has a second hand head on it, which has been repaired "tubed" I think is the term he put on the manner of the repair. The wastegate does not open, so it's free boosting, I think he may have said it was welded up to even stop leakage. The thing goes like a cut cat!!! it blows my mind, it is way way faster than my stock standard truck on the road. It frankly scares me (tall truck going and cornering that fast)
I would be wrapped with that kind of performance out of my truck even on little tyres.
Is my diesel mechanic mate crazy? He hasn't blown the head, he's been running that boost for a long time and no way is he light on the throttle, he hammers it everywhere from what I've seen. Yes he has boost and EGT guages. He does not seem in the slightest concerned at the possibility of blowing his engine.