Author Topic: Dural pushrods, tappets hot or cold?  (Read 588 times)

Online Joolstacho

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Dural pushrods, tappets hot or cold?
« on: 04.04. 2013 11:14 »
I have Dural pushrods in my SR engine, I know the steel pushrods have the tappets adjusted cold, but I have a feeling that the Dural ones should be adjusted hot. Anyone confirm or deny?
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Jools

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Re: Dural pushrods, tappets hot or cold?
« Reply #1 on: 04.04. 2013 13:12 »
G'day Jools, I do mine cold but do give them a tad more, 10 & 12 as I have had it hot enough to prop the valves.
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'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
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Offline KeithJ

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Re: Dural pushrods, tappets hot or cold?
« Reply #2 on: 05.04. 2013 09:20 »
Not seen dural pushrods. Do they have hardened steel caps on the ends?
'59 A10RR + Second engine

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Re: Dural pushrods, tappets hot or cold?
« Reply #3 on: 05.04. 2013 09:56 »
I have seen them on ebay with and without hard ends. Mine are tapered with soft ends.
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'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
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Online Joolstacho

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Re: Dural pushrods, tappets hot or cold?
« Reply #4 on: 05.04. 2013 10:53 »
Got them about 20 years ago in the UK, -(I think from Armours but I can't really remember). No steel ends, but seems to be no wear issues at all, -though I've only had 'em fitted for a several hundred k's.
They do SEEM to be a little noisy (tappity), but it may just be my imagination, or possibly the Dural is more musically resonant. ;)
I had set them 8 and 10 hot, but I'm tempted to close down the gaps a thou or two. (Mind you I'd rather have more clearance than too little).
Guess I should set them 8 and 10 hot, then measure them when cool to see what the expansion is like.