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[308] 308 Carby Turbo

soop

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You can machine the head to bump the CR up.

Its kind of ghetto but it works.
MSN it lad.
 

ari666

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RazzaCaine

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sorry man, but 9.4:1 (vk black stock heads pre ULP) is a little too much for FI. so fi you need to de-CR and NA you need to bump up CR. which way you go is up to your budget

ah ok ill probably stay NA as its cheaper
 

383 hatch

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As Soop said, carbies work quiet fine on a blown engine, but they still need to be boost referenced, however nowadays they can be bought off the shelf. On a blow through turbo set-up you really need someone that knows how to set up a carby for that application. Certainly not a job for the backyarder/home mechanic. Then once it's all said and done, EFI is still the way to go IMO.

haha that picture looks so dodgy! see ive been thinking about compression ratios for the 308 which is why ive been pondering FI set ups as the standard compression ratio is good for it but needs bumping up for a NA set up. i think ill stay NA as itll be easier and cheaper to set up. i know using flat top pistons bump the CR thanks to my over thread, are the other ways of increasing CR to do with using different head gaskets and head skimming? or is that for reducing CR? im thinking its search time..

Changing the pistons is the proper way of raising comp, end of story...:)
 

soop

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Might wanna port match the extractors to the new heads too while you have it apart.
Just a thought, wont be worth jack but its better then nothing.
 
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