vr6 boost

[trevor 0]

vr6 turbo charged . two questions . sorry three questions .

 

1 how much boost on a standard engine and what power? safely

 

2 how do i lower the compression fat head gasket ? shorter rods ? or change the pistons ?

 

3 does the vr6 fit on the o2m 6 speed box with 4x4 tranfer fitted .

[trevor 0]

box is out of a tt .20 v turbo

[RS VR6 0]

The VR can take somewhere around 500whp

Most people will use a thicker headgasket

A tranny off a 4cyl will not bolt up to a 6cyl block

[Kevin Bacon 5]

1 how much boost on a standard engine and what power? safely

 

Safe =15psi ~ 400hp. The engine can hold more, but the gearbox is the weak link. 15 psi should hold for ages so long as you're sensible in the lower gears in the dry.

 

2 how do i lower the compression fat head gasket ? shorter rods ? or change the pistons ?

 

Forged low CR pistons best for high hp, stock pistons OK up to about 400-450hp. Stock rods have held 600hp. Good spacer gaskets work well.

 

3 does the vr6 fit on the o2m 6 speed box with 4x4 tranfer fitted .

 

O2M from 24V cars fits, but needs various modifications to gearbox and front engine mounts.

[trevor 0]

many thanks for your help . . . . any one looking for a 1.8 20v . i may just be going for a vr6 turbo