I'm putting together my evo build and I'm not sure which spring I'm going to need for my set-up. Some help would be appreciated.

Mods list:

BBK Full Turbo Kit
Forge Adjustable Wastegate Actuator
1000cc PTE injectors
Walbro 255 lph Fuel Pump
Kelford 272 Camshafts
Supertech Dual Springs + Retainers
ARP Head Studs
AMS LICP
AMS FMIC
Perrin Intake System
Megan Racing O2 Housing
Port/Polish/Coat Stock Manifold
91 Octane

From the Forge website:

Valve Spring color coding

Green - 5-15 PSI
Yellow - 15-23 PSI
Blue - 23-30 PSI
Red - 30 + PSI

 

boost level your shooting for?

 

I guess if I had one this would be easy, as I could just pick the appropriate spring.

I listed those parts so experienced Evom members can look at it and get an idea what sort of boost I would be running and then help me pick the appropriate spring.

This is the thread I'm basing my build off of:

https://www.evolutionm.net/forums/ev...tephra-v7.html

That car is running 27 psi if that helps.

 

the best person to ask would be whoever is tuning your car. im sure the blue spring would be right up your alley. looks to be that you will be running between 25-30 psi. i wouldnt think you would run anymore than that on 91.

 

Go for the stiffest spring available from Forge. Mine is an VIII Forge actuator and it has the stiffest(red) spring. This was fine eventhough I usually only ran 22-26# of boost.

 

They are talking about the wastegate actuator spring not valve springs.

 

RE: upgraded valvetrain: It's for safety and if the kelfords can make power to 8, then so be it.