Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

[308] 308 Carby Turbo

soop

Banned
Joined
Nov 11, 2008
Messages
3,847
Reaction score
59
Points
0
Location
Smithton, Tasmania.
Members Ride
2003 SS Commodore Series II
You can machine the head to bump the CR up.

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

ari666

250,000 hits
Joined
Mar 10, 2009
Messages
11,835
Reaction score
128
Points
63
Location
melbourne
Members Ride
1966 impala, R32 GTR

RazzaCaine

Long Gone Now
Joined
Mar 20, 2010
Messages
424
Reaction score
2
Points
0
Location
---
Members Ride
---
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

Well-Known Member
Joined
Jun 14, 2005
Messages
3,922
Reaction score
67
Points
48
Age
41
Location
Cowes, Phillip Island
Members Ride
VG Ute 5.0,Torana hatch 383,WB Ute 5.0,VR stato5.0
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

Banned
Joined
Nov 11, 2008
Messages
3,847
Reaction score
59
Points
0
Location
Smithton, Tasmania.
Members Ride
2003 SS Commodore Series II
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.
 
Top