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Jim Bowen

Buying a donor car for a 24v conversion?

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Yeah it was the gold old 12v. Im sure its not cost effective but it would be a nice project. Theres a local guy who has a homebrew Mk2 Syncro with a turbo'd 4motion and he had blown a few inlet and his bonnet bore the scars. Just wondering if you even have to decomp them.

Im sure Kev will have looked at this.

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4Motion has a much weaker inlet manifold than the R32. Having scoured the Vortex and R32OC for a few years now, it would seem most folk get away with 15psi with the stock R32 intake. It's when pushing their luck at 18+psi, that's when it can burst, but further research shows they only really blow apart due to backfires from shoddy tuning.

 

TBH, the main reason for me buying an R32 was to try another turbo project, but this time with traction and gearbox strength as standard.

 

Nothing on the market currently appeals. HPA make a nice exhaust manifold but the rest of their stuff seems pretty average and over priced. Not sure what stuff I'll use yet but prolly base it around that mani, but it'll defo be a built to last project as before and as OE as possible!

 

Yeah you do need to decomp them. It's bit of a pain on the R / BDE because you need a longer chain. Dropping the CR from 11 to 8 needs quite a thick spacer. About 5mm IIRC.

 

It'll be a great engine when turboed. You'll still get your 240 odd torque between 2000-3000rpm and by then the turbo should be spooling, so by 4K where you normally get a step in the R32 power delivery, you'll just get the same insane thrust as you do from 2K, but it'll keep going to 7K!

Edited by Kevin Bacon

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