Gtr Factory Dump Pipe Differences.

[Fastrotor]

From reading alot of threads , what i can glean is that R32 dumps are a bit crappy, but the 33 & 34 ones are ok .

What i want to know if anyone has any testing info, is one better than the other ? I know the 33 ones are cast, and the 34 ones are Stainless steel. Flow wise , are they on par with each other ??

Also, are they interchangeable with each other ?

The best info i found on here was Ben from Racepace saying on a 375rwkw gtr, putting on tomei manifolds and dumps didn't add a thing. He didn't mention what model it was....

Anyway if you can contribute some test results, please share , thanks

Gary

Edited November 10, 2009 by Fastrotor

[V-Spec]

other thread is here

from what i have been told the r33 ones are the same size just not stainless

i would also like verification on this and some photos

Edited November 10, 2009 by V-Spec

[Fastrotor]

Ah thanks mate. Yeah i only ask since the 33 dumps are alot easier to come by....... i think i'll just stick it out and find some 34 dumps and be done with it.

Gary

[R31Nismoid]

The best info i found on here was Ben from Racepace saying on a 375rwkw gtr, putting on tomei manifolds and dumps didn't add a thing. He didn't mention what model it was....

A little birdy told me factory manifolds, factory R33/R34 dumps, 380rwkw @ 20psi through -5's.

[Fastrotor]

Ah sweet, thanks nismoid !! So one could easily expect that the 34 dumps should handle 450 pretty easily then since the 33&34 are bigger than the 32.....

I'll try to find a set of 34 ones for a month or so, then just settle for the 33's if i have no luck.

Thanks for the inside info

Gary

[STATUS]

The r34 ones are totally different just finished a motor and compared them to the r32 ones i had lying around. I would agree though that manifolds do zero @ the power your chasing.

[R31Nismoid]

Ye R34 is a totally different design to the other two.

R34 dumps have 100% flowed 400rwkw as well.

Although over that you might run into issues, no one i know has gone any further, because they have not tried.

So you if you want 450rwkw - you would probably be wise to think about larger stuff