Help? Should I Rebuild The 20 Or Go 25

[ahh30two]

gday guys i have a r32 gtst and the rb20 has ful shit its self

my question is--

to rebuild the rb20 with fogies ect ect from top to bottom or put a 25 or 26 in...

if i was to put a 25 or 26 in can i stil get it roadworthy just as easy///

cheers

neew opinions serious ones///

trav

[Kranker]

"ful shit its self" doesnt really describe to the people in the know on this forum what happened to your engine.

If uve thrown a rod through ur block, they may as well go a 25, but if its a less major problem, they maybe rebuild will be all you need.

Post up details of what you think has gone wrong.

....Im not being a smart arse, ull just get a better response if you post up more info

[R31Nismoid]

Overall RB25 is where its at.

I wouldnt rebuild an RB20, replace it with one from a wrecker, or get a RB25.

For the price of forgies ($1400) you've almost got half the money of a RB25 conversion

[SLY33]

definitly the 25 or 26. if you do the correct brake upgrade i believe you shouldnt have too much trouble being legal. not sure about your particular state, tho it souldnt be too hard to find out.

[bubba]

Build a 30..

</hides from flamage>

[ahh30two]

thanks for the input guys..

basicly i have a hole in piston 2 and bent valves

im contemplating on putting a 25 in but im in vic and pretty sure id have to get an engineers to get it road worthy..

my other idea is just to buy a bare 20 engine...

so yeah just got to think..

[R31Nismoid]

RB25 is easy to engineer.

I dont even think you need a brake upgrade as 32t brakes are not far different from 33t overall.

[ahh30two]

hrmmmm yeah engeneering seems like its going to be a headache

[R32Abuser]

30 is the go...mite be a little hard to pass ur road worthy etc tho!

depends there is the old, grind the 30 engine number off and stamp your 20 number in trick. If you use a 25DE head, then it will look exactly like your 20, bar being 30mm higher-something which i doubt any of the blokes which check would notice.

[STR8E180]

there is no way i would ever spend money on rebuilding a RB20

go RB25!!!

[R338OY]

Or look around for a cheap blown 25 and rebuild that, then sell your 20 to recoup a little of the cost.

It's not like there are mint 25's lying around.

Don't forget there are a few extra issues involved in a 25 conversion. ie. Use 20 or 25 tranny? Gearbox mounted in differently for 25, also which ECU to use? You can use either, depending on your setup and if you want to run NVCS, or even a Power FC.

Edited July 5, 2008 by R338OY

[ahh30two]

yeah think i have figured a source i can get a bare 20 motor dirt cheao im going to slap that in for now just to get it going then get roady and in the mean time build a 25/30 then wen complete put it in