There is no need to try pistons, they either fit and feed oil or not. If you are set on doing pistons and everything and spending $6K for parts and then getting someone to install all this and tune the car then do it(another $2K). If I had $7000-$8000 to spend, then I would just put and EVO motor in car. Thanks for the offer though.

ROAD/RACE
http://www.roadracemotorsports.com/

 

what kind of internal mods would you have to do to get to 12-15psi?
valve covers and cams? not possible with the 4g94? What do you think Rob? thanks in advance

 

Cams and valve covers are not needed. PISTONS! Pistons need more oil to them in order to get rid of heat. Even with stock compression 12 psi should work but, too much heat. Big radiator and oil cooler would help your cause too. More electric fans would help cool motor. HEAT is the enemy here. Heat sheilds are needed too in strategic places outside the motor. Crank and connecting rods should be strong enough at 12 psi too.

ROAD/RACE

http://www.roadracemotorsports.com/

 

but you just said not to try pistons...I'm confused, is it possible to get new pistons that feed oil in there? or do we have to reduce heat with the things you mentioned exclusively. Or are you saying it'd be too much hassle to change pistons and would be more beneficial to go with the 4g63? Thanks for your help Rob, if you guys can get me the parts I would be more than happy to go through RRM, but I know you only want to do installs.

 

I can clear it up. I said we don't need anyone to try pistons for us. External cooling aides would help you achieve end goal. Pistons would be last because it is most intrusive to engine and expensive. You need to call to talk. It is hard to expalin one post at a time. CALL ME!

ROAD/RACE

562-906-5335
http://www.roadracemotorsports.com/

 

Yea, in the description of the stage 2 turbo kit, it says you will need an intercooler. Im confused if the intercooler is included or will you have to buy another?

 

Not sure of confusion. We use a front mount in our basic install. If you plan to stay with basic 5- 6 psi setup we can probably ditch the intercooler. Call us if you have specific concern, we can talk. Rob

ROAD/RACE
http://www.roadracemotorsports.com/

 

Yes Rob, i would love to go through you guys, however a road trip to CA would just be to difficult for me. Even though i only live in AZ

 

Call me , might use you as a GuineaPig if you are interested. Got an idea!

ROAD/RACE
http://www.roadracemotorsports.com/

 

ok, you do not need oil squirters, yes they are recommended for safety but not nessacary. Also if you think a ball bearing t28 has lag you are nuts. It will probably spool around 2700 or so would be my guess and that is good for a turbo. In no way is the t28 a drag turbo, it is an autox turbo. And if you ask how i know all this, i own a 95 eclipse gsx with a much bigger turbo and i run it on the street, full bost doesnt come in till 4000 rpms, now that is lag, but barely noticable.

 

also add to that that i would recommend that everyone listens to what ROCK says because he knows what he is talking about.

 

You don't really need to touch the pistons or oilign system under 12 / 14 psi boost if you have a really good intercooler. Above 10 psi an oil cooler will help a lot as well.

Above 14 psi we have found ceramic coating of piston crowns and teflon treating of piston skirts does a fantastic job without needing to replace the pistons. Stops things from getting too hot and oil lubrication via sprayers is not necessary. Of course when you start talking above 16 psi then there are other factors but there are a lot of non turbo engines running above 16 psi without oil squirters and do not have problems.

It really comes down to the efficiency of your cooling system being intercooler, radiator and oil cooler. If they are workign well then you won't have a real problem till you get above 14 psi boost.

David Thomas
www.rpw.com.au

 

yeah, i am going to be running a 4G64 engine out of a galant running a 50 trim/T3 turbo in my eclipse with no oil squirters, just gotta be a little more careful.

 

really??? CRAZY *sarcastic
sorry just got this, so like whats a 4G64?

 

What is the max I can safely bore my pistons out to so I can obtain the maximum amount of boost?