what is the most pressure i can run with a t28 on a stock bottom end with stock compression?

I ran a 12.0 @ 123 on a stock bottom end @ 21psi, but it was with a T3/T04E

depends on what inj. and maf, you are using, the stock bottom end can support more power than a T28 can make, so you're fine there. also, how long do you want the turbo to last, I wouldnt run it past 15pounds, but I'm sure some do.

you ran a 12 with 20+ psi with the stock compression?? the stock compression for a p11 de is 9.5:1 right? assuming i would use 370s with a bored maf sensor i could boost like 15psi out of the box without worring about detonation??

on a DE block, some say not to boost above 10psi unless your running race gas, or aquamist, but people take DE's to 20pounds all the time with race gas. if you want to run that much boost on the T28 be sure the get the 4bar fuel program to use with the 370's.

Originally posted by stickshift
you ran a 12 with 20+ psi with the stock compression?? the stock compression for a p11 de is 9.5:1 right? assuming i would use 370s with a bored maf sensor i could boost like 15psi out of the box without worring about detonation??

He did that with 72lb/hr incectors (twice as big as the 370's). I wouldn't go past 8-9 psi with the 370cc injectors with only the 3-bar fuel pressure program. I believe ITR_KILLR was saying the t-28 was only good for about 15 psi max, you still need the proper fuel setup to run this much boost.

I was just saying that a stock bottem end is pretty stout. It will hold all the psi that you can "safely" run through a T28 and 370cc injectors.

so under the assumption of running the 3 bar program and 370s what sort of boost should i use for daily driving? like 10-11psi?

insane se-r went 11.5@122 on a stock bottom end. It can take a beating

Originally posted by stickshift
so under the assumption of running the 3 bar program and 370s what sort of boost should i use for daily driving? like 10-11psi?

I would say 8...safely. 10 with the 4-bar program.