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Did the shims in my NEO the other day and the final bolt in the cam cap sequence decided to snap off in my head during the final torque...

Having abit of trouble finding new aftermarket ones, only ones I can seem to find are Tomei RB26 ones. They are a seperate stud and nut design like most aftermarket studs which is what I would prefer.

I'm not sure if they will be an exact replacement for the RB25 NEO ones?

Anybody know if A) I could use the Tomei RB26 ones or B) Anywhere that makes a set to suit my engine

Worst case scenario I'll have to use OEM ones but expect to be ripped off + they failed anyway so meh...

Thanks

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How did you bust it?

Is your torque wrench out of calibration?

They are done up to a pretty low setting (can't remember) perhaps you went too tight.

First I've heard of one busting.

Edited by Ben C34

They've just come in and out a few times, plus this one was in the middle right beside the exhaust ports so would have had the largest heat cycles

I did the head, put the standard cams back in, then changed to tomeis but didnt have the time to do the shims at that point, so out they came again... so yea this is really the 4th time they have been torqued up

Tiny stud and tiny torque, about 10ft lbs from memory.

Although they're a puny stud, the weakness is the nut.

It tends to bind up in the thread and if the OP had them on and off so many times, I'd say for sure that's the problem.

Torque reading would be useless and with bound up threads, you reach a situation where you can't tighten or loosen.

Next thing snapo.

Would be a rotten job to get out unless there's some stud protruding?

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