JAM~4g63 Dual Valve Spring Kit, Complete

[Awdboost]

Any one use the Jackson auto Dual Valve spring kit?? What are some of the best valve spring on the market?? Any use HKS?? Crower?? Thanks all input is welcome.

 

[TSIfreek]

They are really all the same. I would just put in single springs with ti retainers unless you plan on turning 10k. I run super tec springs and retainers from victory performance

 

[sonicnofadz]

I haven't tried them yet, but I have bought quite a few items from them before, including revised lifters. They seem like they really know their stuff (I went there in person) and stand by all of their products. They have been building up 4G63 engines for a LONG time and it is scary how much they know about the platform. They even actually design alot of engine components themselves (they have custom pistons, throttle bodies, etc.) I'd trust anything they have for sale.

 

[Awdboost]

I would have to agree with you. They do know alot.. But the are soo hard to talk to with out them try to sell you there motor. If I were to call in and ask them about the spring they would just be like "We can make you a cylinder head that will alow you to do it, why don't you let us" I'm sure they know what they are doing but they try pushing you to buy there head or engines.. That why I'm ask people instead of them.. They know there shit but are too pushy.

 

[anconover]

IMO, go with crower springs/retainers. JAM knows theyre stuff, but very pushy, and feel that they are above everyone else. Very cocky IMO, and pricey.