Quote:
Originally Posted by 4x4le
I know we have duked it out before but that isnt what Im wanting to do here. I really would like to see the graph for this. I dont doubt for a minute that with a really good flowing head that a 2871r could make that much power on a sr at that low of a pressure but what I dont believe is that it had much more left in it after that. Otherwise why would anyone have stopped at 12psi after spending that much money on the head, the turbo setup, the ems, and then tuning to be like thats enough! stop there.
Im guessing there was 25-30whp more possible that that turbo could make and it would have been accomplished in just a couple more lbs of boost.
Flowing the heck out of the head just allows for less air to back up in the intake manifold and more to make it in the engine, so you flow the same amount of air at a lower pressure. The pressure its happening at is kinda irrelevant.
grab that graph up if you can.
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We didn't stop after that we went up to 365 at 1 bar. We ran out of time on the dyno day, made sure it was safe for up to 18 psi and sent the guy on his way. I posted a huge thread about this dyno session and the car about 1.5 years ago or so but some newfag NEW mod who had only been with zilvia for like 2-3 years locked the thread saying it was advertising. I was literally just trying to show what or how much of an effect the head work had with those cams and some serious dyno dynamics time, but like you said the head work.
Trust me usually I am in the boat with everyone else where port/polish on high port heads doesn't really do crap and it's not worth the money but this and one other car I tuned a few years ago proved me wrong. may have the sheet still or if I can dig up that thread if it's not deleted, I know it's locked though on zilvia in the chat section somewhere.
