Hi, Referring to my long introduction, if you read it I dont have to tell more abot the circumstances.
http://www.a7a10.net/forum/index.php?topic=11737.0Symptoms and diagnosis, this is where i need some feed-back.
The bike started fine, or at least willingly. Oil was ouzing from the RH side of the rocker hous and spurting out of the crankhouse ventilation. Oil was pitch black, and even felt somewhat thicker than its original SAE 50. It appeared to have passed through the combustion and then down to the sump..
There was a distinct tick-tick for every turn (of the camshaft?) wich to me tells there is something snagging or bent, or..
We took off the outer transmission cover, and took out the generator chain, to eleminate it as a source of the ticking. Ticking remained
I used a screwdriver as a stethoscope to find out where the noise come from..
Digging deeper , removing the inner cover, the ticking was traced to the cam area.
Compression test reveiled the LH cylinder to be hold twice as much as the RH.
The oil pump feels like the culprit, not able to keep the flow or pressure.
Or maybe it is the other way around, the oil bypassing the valves, getting too thick and too full of carbon deposits, makes the oil pum to fail..
Anyhow, I have not yet had the time to remove the head and look further into this.
I hope the bronze main bearing is OK, it sounds like it is. All bearings seem to have escaped any dammage. So far..
I likewise hope all dammage is in the accessible parts - pushrods, lifter, valves.. and not on the camshaft. Is this just wishful thinking? Possibly.
I would like to not have to split the engine, but probably it is better to
know everything is OK, and then close it, than to hope there are no hidden dammages in there.
I will order a new Oil Pump from SRM, they seem to he the most recommended. I seem to have to leave allso the cylinder head to them for rebuild and modification to accept non-lead fuel.
Or is there any other workshop that can do this job, who hav all necessary tools and jigs, and the knowledge? Cosmo in Hastings?
The only remaining workshop in Sweden is due to close down, and he is unwilling to take on more jobs.. I might be able to talk him over..
There are a coupple other workshops, that only do Norton or Triumph, and claim making the tools for BSA would cost more than the rebuild itself..
Any opinions? Tips
I will be back with pics, when I have them, but I will be off to Holland for some time first..
Anders
Sweden