Recent Posts

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A7 & A10 Engine / Re: Solid carbon fibre head gasket
« Last post by Peter in Aus on Today at 06:16 »
Another year go by and the bike has 13000 mile's on the clock, still running good and no oil leaks, so still very pappy with the solid carbon fiber head gasket.
The bike had a pretty good workout this year on Richards Orabanda run with temp up around 45c Deg
I doubt I will do to many mile's this year as every thing has been closed down *sad2*
As a follow up to this, the diesel soaking did not work, the piston still would not budge under my press after months of soaking, so I resorted to drilling numerous 10mm holes in piston top, then chiselled away the piston using a modified punch, ground to have a small chisel type end 1/8” across. This actually only took an hour and is what I should have done in the first place I guess  *problem*

Whilst the bottom part of the piston was wet with diesel the ring area was completely dry, so the diesel did not penetrate there, despite numerous heat cycles etc.

It’s pretty rusty inside the cases but the rod, crank and barrel look salvageable, the cases maybe not so, it looks like the hole in the cases (s) was caused by the frame punching a hole through the cases, maybe in a crash. A repair would involve re creating new lugs for “through” engine bolt, that also bolts the engine into the frame. There are two other small cracks in the cases, one small around a sump bolt (maybe the press caused that) and one on the “protrusion” at the front for bolting to the frame (the b31 has engine plates instead of this “protrusion”, I guess to over come these problems.

My next problem is the crank is stuck in the drive side case, despite the spacer over the drive spline spinning freely, as does the main bearing *doubt* *dunno*

Chat, Offtopic, Meetings & Everything Else / Re: A10 Suzuki
« Last post by Joolstacho on Today at 00:05 »
The GS 500 is not a bad thing. Nice and simple mechanically, air cooled 2 valve / cyl twin. Plenty of performance. Strong, reliable.
Light and chuckable as a 250. But why you'd want to put one in a nice A10 frame I don't know, the GS handles and stops pretty well. Got to be a marriage of convenience I'd say.
Frame / Re: Why is my front brake still useless?
« Last post by JulianS on 08.04. 2020 22:59 »
There is only very limited movement on the floating shoes. Movement limited by the drum.

See the photo you can see the pivot marks on the pads which will give some idea about how much or little they slide.

(left is a Triumph and right is BSA)
A7 & A10 Engine / Re: cylinder head
« Last post by berger on 08.04. 2020 22:50 »
hello musky built it back up in a hurry a couple of years ago ,  they are both in the cups, done lots of miles like this and I just looked again and took a feeler to the rocker arm and I can't get a 2thou between spring keeper and rocker arm even though I can set tappet clearance .rocker is possibly just interfering with keeper, this is the result of losing about 45 thou from top of barrel all the way to the rocker box  [ be warned *problem* ]. or I have picked up a couple of longer push rods not realising when in that rush to get it done *bash*  it has to come OFF!!! *pull hair out* *pull hair out* if I find the push rods are proper it has to be the vast  skimming in which case I will be making a thick copper gasket set for it *work* but why are the exhausts perfect *conf2* I will find out tomorrow, ps is  10 or 12g off rockers about right or is more lightning needed.
Chat, Offtopic, Meetings & Everything Else / Re: New BSA’s
« Last post by A10 JWO on 08.04. 2020 22:05 »
With that virus out there, please hold your breath for a long time.
Chat, Offtopic, Meetings & Everything Else / Re: A10 Suzuki
« Last post by A10 JWO on 08.04. 2020 22:03 »
I had that engine in the right frame, superb and bullet proof. I would not do that to an A10 personally, albeit a clever bit of engineering.
Engine and hubs had gone powdery on the ReBsa so blasted them with soda then washed off with water afterwards. Hope any residue isn't corrosive.
A7 & A10 Engine / Re: cylinder head
« Last post by muskrat on 08.04. 2020 21:02 »
G'day berger.
At half lift of the valve the adjuster should be dead in line with the valve stem. If one adjuster is out along way compared to the other it could be the pushrod is sitting on the edge of the cup.
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