Compression... ?

[Entaran]

How high can you take a 4g63's compression?

Stock is 7.8:1 for a vr4 I believe... is it possible (what parts do you need to replace?) to get to either 9.5:1 or 10:1?

 

[JSTYLE]

put some Na Galant pistons in it.. will raise the compression to 9.0:1

Jon

 

[bazeng]

if u want higher comp
mill the head / block

flat top pistons
thinner head gasket

u should know that mate.. its basic engine stuff
u haven't learnt it in your course yet lozza??

 

[Entaran]

Engines and stuff like that is next year. Or even the year after, depends when I take those subjects.

So no, I haven't learnt! Would I have asked if I knew?

 

[JSTYLE]

u should know that mate.. its basic engine stuff
u haven't learnt it in your course yet lozza??

Barry keep it on topic and dont make it a PERSONAL attack ok.. im sick of this.. keep all posts on topic at all times.

Please refer to the Club Rules:

http://forums.team4g.com/viewtopic.php?t=31

Any concerns email [email protected] or send me a pm.

Jon

 

[bazeng]

lol
its not an attack
im still waiting for the "running in" response about throwing a bearing..

 

[CLuTZ]

std compression is 7.8:1 isnt it?

 

[Entaran]

I believe so, but under LPG low down torque will suck balls, hence why I want to know how high I can raise compression.

 

[JSTYLE]

i had an idea bout this.. 4G63's come in disel.. and assuming that disel doesnt rev high.. they would have very high comp.. so maybe disel 4G63 pistons are the way to go? double check with your engine builder as it just came accross my mind.

jon