Another Rb25 Turbo Onto Rb20 Question

[WAN73D]

hey kids

i'm toying with the idea of putting on an rb25 turbo onto my 1990 gtst.

reason for thinking this mod is good is because its relatively cost effective for mildish gains which im after.

thing is i have read posts that say u need the r33 elbow as well or u'll havto machine (or something) the r32 one in order to get it to fit.

my question is...is the elbow the induction pipe to the turbo? is that what they mean by this?

ie will this mean that i will need: a new pod, an r33 AFM, and "Elbow" to cover myself for the induction side

suddenly this doesnt seem very cost effective anymore

or can i just use my stock r32 setup???

anyone got wisdom??...shed some light pls.

[salad]

The elbow is the compressor outlet pipe, the very first bit of piping to your intercooler. The RB25 one is a bit bigger than the RB20, you can pick them up for around $50 in the for sale section. Everything else is bolt on.

[mark_sudakov]

i also wanted to clear this up about the rb25 turbo on the rb20.

When buying dump pipes, do i get the one for the rb25 or the rb20, considering the turbo is now an rb25?

Or is the dump pipe the same?

Edited April 24, 2007 by mark_sudakov

[Simon-S14]

same

[WAN73D]

thanks for that salad. appreciated

Mark: from what i've read everything else should be straight bolt on as is. ie whatever else bolts onto the rb20 turbo will bolt onto the rb25 turb.

but that's only what i've read

sooooo if someone who's actually done it or seen it done would like to comment on this then go ahead...

[WazR32GTSt]

i had it dome on mine

i turned up at the mechanics with the rb25 turbo and the elbow pipe and picked it up the next day all done

...no extra parts or anything were required

the gains up top are very mild on an rb20 but the good news is that there's still virtually the same minimal amount of lag so its not too bad of an upgrade

[salad]

In my experiences, everything has bolted up on the '90 model, but on the '89 model, the water lines and banjo bolts from the RB25 needed to be used too as the '89 model used smaller ones.

Dont know it's year specific or not, but they were both GTS-t type Ms and one was 89 and one was 90.

[newcastler32]

you can drill out the holes on the rb20 turbo elbow. Doesn't leave much meat left on the elbow, but does make it fit.

[Birnie]

I'f you buying a 2nd hand turbo off someone, mont likely they are upgrading and won't need the elbow.

Make sure you ask for it and get it !

This will help by the way.....

http://www.skylinesaustralia.com/forums/in...01&hl=turbo

Dump pipe WILL be exactly the same.