Page 2 of 2
Re: More than the usual tappet noise.
Posted: Thu Sep 13, 2012 6:48 pm
by Roy Gavin
You could always try checking them the way 99% of the auto service guys check them - by feel with the motor hot and running at a slow tickover.
That way any excessive end float or wear in the rocker bearing becomes obvious, and it might be easier to source the sound too.
Re: More than the usual tappet noise.
Posted: Sat Sep 15, 2012 1:52 am
by sterob
Have you started it with the rocker covers off Steve? Make sure oil oozes from around the rocker arms. A bit messy but a good test for proper oil flow.
Re: More than the usual tappet noise.
Posted: Sun Sep 16, 2012 8:57 am
by SteveD
Yep, did that (Roy and sterob) at the last valve check.
The consensus at the Far Cairn boxerworks get together was that it's an exhaust leak as I'd thought. The leak can be felt around the star nut. buzz didn't even burn his hand!
I'll have a crack at filing down the compression ring to ensure it tightens down correctly. Last week I just gooped up the gap as a test, before tightening the star nut.
Re: More than the usual tappet noise.
Posted: Sun Sep 16, 2012 9:45 am
by 2valve
hi steve , i have some spare compression rings in my archives if you need any ( i think there all the same
)
Re: More than the usual tappet noise.
Posted: Sun Sep 16, 2012 10:38 pm
by SteveD
2valve wrote:hi steve , i have some spare compression rings in my archives if you need any ( i think there all the same
)
Thanks Gary. I have a few too. Thanks for the offer.
Re: More than the usual tappet noise.
Posted: Mon Sep 17, 2012 6:41 am
by chasbmw
Roy Gavin wrote:You could always try checking them the way 99% of the auto service guys check them - by feel with the motor hot and running at a slow tickover.
That way any excessive end float or wear in the rocker bearing becomes obvious, and it might be easier to source the sound too.
If you did that there would be a hell of a lot of oil going everywhere!