What new cams should I use??

[Jeratli]

I have a 1990 240sx with a S14 SR20DET. Now I already have alot of mods on the engine, but now I'm ready to upgrade the internals. My question is what are the max size cams I can use without having to upgrade the valve springs and retainers? And what are the best brand of cams to use on the SR engine? Please someone with a lil bit more knowledge help me out. And would my already existent modifications to my engine effect my choice of cams? I have a RS Enthalpy tuned ECU, 550cc injectors, S15 dual ball bearing T28 turbo, Z32 MAF, tubular manifold, HKS Hi Power 3 in Exhaust, Test pipe, intake, Koyo radiator, and Blitz LM intercooler. All help will be appreciated and thank you very much.

[DP_Michelle G]

tomei pon cam's are the best or you can call web cams for a custom pair

[kensreliableb18b]

agreed. pon cams would be your best bet or an equivalent would be hks 256/256 (lift is slighly different). this being that you dont wanna upgrade your springs

would still recommend you to change to stiffer springs.
then you'd have the choice of 256/256 or 264/264step1s

[GSXRJJordan]

^^ Agreed, why wouldn't you change your springs?? The valves themselves are fine, and springs are not expensive. Get some springs, a slightly bigger cam, and some RAS.

[Wahl 136]

If your upgrading internals it only makes sense to do spring/retainers/RAS for the price.

[Jeratli]

Cool but where are the best place to buy Tomei Cams and springs? RHDJapan?? Who all supplies those?

[Jeratli]

What are RAS?

[DP_Michelle G]

rocker arm stoppers =ras

frsport sales tomei

[Jeratli]

Awesome I got those. Will Taking out the VVT cause a problem?

[MrMigs]

nm already been said