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Hi ,

I was told today that ARP don't do rod bolts for RB25DET rods. Tomei bolts don't fit.

So my question is to all those RB25DET rebuild folks - what rod bolts did you use -

What other options (other than standard) do I have ??

Thanks,

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Roy,

It was UAS who told me that ARP rod bolts don't come for the RB25DET -

I then pointed out to John, that the UAS Web site states that the RB25DET linished conrods section they recomend ARP rod bolts -

I think is was just an honest mistake - John is look at alternatives now.

Anyone got any other options ??

Maybe have to cryo-temper the standard ones ??

this is not a direct answer to the question, BUT, i was speaking to a mechanic who is rebuilding a couple of engines ATM, one is a CA18DET, which he is getting stronger rod bolts from a chevy engine and reeming the hole out a little to fit the new stronger bolts!! Does this sound like a valid process or would any increase in this size cause structural issues with the conrods ??

i thought that too, but thinking about it,it seems a hell of a lot cheaper, and as long as the hole is widened too much should be fine for normal rev parameters!! wouldn't do this if increasing the rev range of the conrods!!!

what does it cost for your alternative? cryogentically tempered?

Hi guys, we exclusively use ARP rod bolts, main bearing studs and head studs. We order them by their dimension, eg; 60 mm long 10 mm diameter, thread 1.25. As I have posted many times in the past, don't bother trying to order "a set of rod bolts for an RB25" you will get nowhere. They have secrecy/supplier agreements with Japanese tuning shops that stop them from selling "sets of rod bolts for an RB25". There is no secrecy/suppier agreement to stop them from selling "12 X rod bolts, 60 mm long, 10 mm diameter with thread 1.25".

These are not the real dimensions by the way, you have to measure them for yourself.

Hope that helps

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