Turbo options
05-03-2003, 10:23 AM
#31
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log is the worst design in terms of making power.
but i made 457rwhp@20psi on a log so
i think it was placement of the turbo and the wastegate. (secret dont ask) 
revhard has a nice design but poor wg placement.
but i made 457rwhp@20psi on a log so
i think it was placement of the turbo and the wastegate. (secret dont ask) revhard has a nice design but poor wg placement.
05-03-2003, 10:24 AM
#32
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Originally posted by Boosted2003
yeah on my car older models had square type manifold type opens and runners like rev hard and majority of makers have... i have the newer design that they used on the european group a racing car that round runners and opening much more air flow.... using group a intake/exhasut maifollds are the best for turbo options... i think they make them for the racing silvias....stock ones....but for custom trubo setup stay away from a pored manifold. go with a tubular design piping alot less porting need done.... only think need done is porting the teh weld seams if any inside the piping and that get tricking...GREASER will probably tell u thats almost not even worth grinding those weld seams down not that much of lost in airflow...
yeah on my car older models had square type manifold type opens and runners like rev hard and majority of makers have... i have the newer design that they used on the european group a racing car that round runners and opening much more air flow.... using group a intake/exhasut maifollds are the best for turbo options... i think they make them for the racing silvias....stock ones....but for custom trubo setup stay away from a pored manifold. go with a tubular design piping alot less porting need done.... only think need done is porting the teh weld seams if any inside the piping and that get tricking...GREASER will probably tell u thats almost not even worth grinding those weld seams down not that much of lost in airflow...
on the outside no...but the inside needs to be smooth as a nice round ass. hahah very smooth .
imperfections will wreak havoc with airflow. limiting hp. I smoothed the hell outta my log manifold. it showed on the dyno.
05-05-2003, 12:42 PM
#36
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I am not positive how he does it, but he has half the turboford market and another man has the other half with another style header.. its a tube style, all chrome and what not... 2ce the price if not more, and most wont spend more on a header than they got the car for... one being me... I am just goin to do some porting on my stock manifold, almost identicle to the thing pictured, just its cast'ed as one piece and wont flow as well as that but close enough for me..
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