Rb26 Plenum And Itb On Rb20

[boostn32]

Thanks GTRNUR thats the info i was looking for, good points there with the vacume and off boost load points. im hoping to have boost in by 5k and 25pound by 5.5k

[GTRNUR]

Welcome mate. Nice fabrication work though. If you dont use it im sure someone with an RB25DE head on their RB30 would use it. They are aparently the same intake port size.

[bubba]

RB25DE ports are larger than RB20 but the bolt pattern is the same.

[boostn32]

car is being dynoed on the 27th and will run at jamboree, so will be a good test to see how well it works.

[GTRNUR]

You must post a video of it screaming at 9000 rpm. RB20's with big singles sound great at full noise.

[boostn32]

lol yeah i will have video but might bring the rpm back if i can as i dont want the oil pump to lunch its self. 8 k will be perfect,

[D_Stirls]

Have a look at this thread, It's not completely compatible with what you are asking but they used a GTR plenum welded onto the RB20 runners, standard RB20 bottom end, standard cams with shimmed valve springs, big turbo and lots of boost. Was just done for shits and giggles to see how much a standard RB20 can take before they blow. they made 370rwkw and never killed it. The boost flat line is because that's the max' of the MAP sensor.

http://www.skylinesaustralia.com/forums/Tu...-M-t214053.html

Edited August 12, 2009 by D_Stirls

[R31Nismoid]

without the correction, and various other things little "tricks", not a bad result... only realistically about 330-340rwkw at best.

The RB20 head is not the friend of power

[boostn32]

HHmmm maybe a GT35R is needed instead of me 3040R

Edited August 12, 2009 by boostn32

[bubba]

Have a look at this thread, It's not completely compatible with what you are asking but they used a GTR plenum welded onto the RB20 runners, standard RB20 bottom end, standard cams with shimmed valve springs, big turbo and lots of boost. Was just done for shits and giggles to see how much a standard RB20 can take before they blow. they made 370rwkw and never killed it. The boost flat line is because that's the max' of the MAP sensor.

http://www.skylinesaustralia.com/forums/Tu...-M-t214053.html

That's what I used as an example when building my manifold.

[boostn32]

I should have some pictures up tomorrow. this setup will be on display at jamboree so come have a look and see how it goes.

This will be the first outting for the TMF 32

[boostn32]

Well its about a month later and thought i would post up what has happened, i didnt end up getting to the dyno and parts didnt turn up so it all

just seemed to fall in a heap. i have the manifold nearly all done just a few small things to do, then i can move onto the rest of the build.

i would guess there is around 20 hours in porting this manifold and the runners all end up perfect. no lumps or bumps and a very smooth flow

through the manifold joins. there wont be much progress for a while now untill i get back from japan in late october. and before i can get this one finished

there is a new build in the pipe line for a 1000hp 4cyl nissan engine to go into a 1200 ute. what 4cylinder you ask? time will tell and its not what you think!

[R31Nismoid]

Lemme guess.. a "L" series motor?

[boostn32]

Na its a twin cam.

[R33NZSL33PA]

lol put a 25 head on a 26 LOL

[D_Stirls]

Well its about a month later and thought i would post up what has happened, i didnt end up getting to the dyno and parts didnt turn up so it all

just seemed to fall in a heap. i have the manifold nearly all done just a few small things to do, then i can move onto the rest of the build.

i would guess there is around 20 hours in porting this manifold and the runners all end up perfect. no lumps or bumps and a very smooth flow

through the manifold joins. there wont be much progress for a while now untill i get back from japan in late october. and before i can get this one finished

there is a new build in the pipe line for a 1000hp 4cyl nissan engine to go into a 1200 ute. what 4cylinder you ask? time will tell and its not what you think!

Has to be a CA,

[boostn32]

Yeah i like the CA but this engine will make the numbers easy. anyway all a bit off topic. my fault.

[_Ryan_]

Yeah i like the CA but this engine will make the numbers easy. anyway all a bit off topic. my fault.

FJ?

[boostn32]

NA every body is wrong, lol.

[Adriano]

KA24?