Upgrading an Alpine front turbo kit.

[fullthrottle800]

I currently have a Alpine front mount turbo kit with a GT-25 turbo on an Apex.I am going to go bigger and was wondering what everyone would suggest as far as turbo,header,fuel managment.I do mostly mountain riding.

 

[ProstockBenji]

28R is nice !

 

[zross1]

You don't need to change headers or anything else. Just throw on a 28rs add some fuel and have a different beast. Exhaust flange is the same for the 25 and the 28, also the turbine housing outlet is the same incase you didn't know.

 

[Yakuza]

Have you looked into Synergy?

http://www.snowest.com/fusetalk/message ... erthread=y


Here's Mitch's website.

http://www.goturbo.ca/products/timing.htm

 

[visegrip]

why not go with a 2560 if he has a 2554???is there not gonna be alot of lag difference when he steps up to a 28?

 

[Remmy]

why not go with a 2560 if he has a 2554???is there not gonna be alot of lag difference when he steps up to a 28?

No, slightly more lag, most can hardly tell a difference. The 28 is a sweet turbo for an Apex and will push the motor beyond what the stock head allows.

 

[zross1]

Mitch has some sweet stuff. I'll eventually have his midmount conversion.

 

[visegrip]

won't a 2560 give you 20lbs of boost?

 

[TurboJamie]

Swapped out my 25 for a 2560R best move I made.

 

[powderlites]

Apex GT2560 turbo

The following info is the way i feel about these turbos on Apex
GT2554 is too small to go over 12 psi boost without causing lots of heat and broken headers etc.
Gt2560 and GT2554 use same exhaust housing and wheel!! We have tried 2560 on RX1 and Vector
GT2860RS comes in 3 different types of turbos regular Gt2860RS is .86 housing and is slower spooling then .64
I would never run to high of exhaust pressure turbo because of longterm life of sled.
Some of turbo kits have 2854 which looks like a gt25 and has 9 blade exhaust turbine compared to 2554 has 11 blades.
Go with 28rs .64 housing for fast spooling and ported waste gate and double down pipe if you want throttle response and midrange power.
We have modified intake housings and exhaust housings on new turbos

GT2560 will drag race but never stand up to longer pulls compared to proper bigger turbo setup.
Intercoolers, filters, exhaust, and all things come into making well balanced setup that will work with right cam timing, etc.
It's like cooking!! Right recipe will be what smokes your buddy if you know how to setup track, suspension, gearing, clutching being most important. Everything goes through a belt and clutches.

http://www.powderlites.com