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Ive been on nengun and greenline and duznt seem to be any for the NEO? I have tomei cams so prefferbaly same brand. Would R33 fit? Rebuilt engine with 2835 .8 a/r, would i even need them?

Try performance Springs

or High Octane (even though i dislike them at the moment)

Edited by MR331307
Ive been on nengun and greenline and duznt seem to be any for the NEO? I have tomei cams so prefferbaly same brand. Would R33 fit? Rebuilt engine with 2835 .8 a/r, would i even need them?

If you're using tomei poncams you shouldnt need to change your valve springs.

Is it true that you shoud upgrade the springs when installing bigger cams? Due to higher lift therefore more stress on them? What about valve bounch or float? Any one suffered from this and at what power levels?

Is it true that you shoud upgrade the springs when installing bigger cams? Due to higher lift therefore more stress on them? What about valve bounch or float? Any one suffered from this and at what power levels?

over 300rwkw --- no problems and u havent looked hard enough tomei offer springs..

Cheers

Its not so much the power levels but boost run and rpm used.

I recently had a dude pm me stating his r33 experienced valve float on its std springs (unsure if he ran cams and what rpm) with anything over 20psi.

ill just edit the first post i wrote....8-9000rpm and boost is 1.6 drops off to 1.5bar..no probs..

8000-8200 for me aswell.

Into the mid 300rwkw's for a while with a 100% stock head i was.

It really is luck of the draw, meaning how good condition your head is to begin with.

That will determine if you will have issues.

There are people that do get problems, and people that dont have issues with the stock gear.

I guess over time eventually you might have issues, but how long, unsure and i dont think anyone could tell you

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