Rb26 Stock Head Except 272cams.. Rpm Limit?

[GreeceS13]

I have stock head except hks 272-9.2 cams.

What rpm limit can I use safe for my head?

[NYTSKY]

I hope there not standard valve springs

I would stick with standard rev limit.

[GreeceS13]

Stock valve springs, retainers, etc etc...

What I need for 8500 rev limit?

[GreeceS13]

HKS said to put springs for over 10,2 lift!

My cams are only 9,32 lift..

I search hks catalogs and they sells "hks pro cam valve springs" for 11.6lift and "hks step 2 valve springs" for 10.2 lift

I need or not?

My cams maybe they are very old? Because in the catalogs of hks there aren't 9.32 cams!

There are 8,7 10,2 and 11,6.

Anyway my head was bolted to the car and it is very very difficult to put now springs and I will need again new gasket! But if I need them I will do it!

Edited July 12, 2008 by GreeceS13

[Adriano]

You can fit upgraded springs without removing the head. Going by the rest of your build, i would be fitting step 1 springs. PS why that cam choice?

[GreeceS13]

This cams was in the engine and I didn't know it..

Why you ask me? You don't like them?

There aren't HKS step 1 springs!

HKS produce springs step 2 and over...

So for my cams? Stock springs? As with hks step 1 8.7mm lift cams?

My cams are 9.32 and the step 2 is 10.2!

[sh@un]

it's the stock valve guides that will die first. i wouldn't take it past 8000 if they haven't been replaced- they are fairly brittle in standard form, and only get worse over time with all the heat up and cool down cycles.