Running weak on one side

[BagONails]

G'day Ian.
I don't run air filters on the Cafe, just short stacks with wire gauze. A flow bench is a good idea as I can't see any mechanical problems. The mob down in Windsor that did the head repair may have one. God knows how much that would cost (probably a weeks wage).
Cheers

There's one at the Tafe here in Regency Park where they run various automotive courses. If you know the right people to ask access has been granted...Maybe there's a Tafe nearer you that might have similar? Thing is though if you weren't getting this previously then something has changed so has to be a failure or a wear out thing rather than basic set up problem doesn't it?

[muskrat]

G'day Yrti.
Both my BSA's run Boyer 12v electric ignition. Thanks for the thought.

G'day Ian.
I haven't really run her much since the rebuild. When doing 1st tune up I noticed it. Basically hands over the exhausts I noticed right was pushing back more than the left. No leaks in the pipes.
OK just ordered the rings from Steadfast, he said it would only be about $25US and will refund the excess postage. Nice to do business with real people rather than algorithms.
Now to find course stones for my hone.
Cheers 

[chaterlea25]

Hi Musky,
I would have tried swopping the carbs before diving down theoretical rabbit holes

John

[muskrat]

G'day John.
I wish I had done that first. Two identical carbs should be the same flow.
When I did a comp test the left seemed lower but that could have been me running out of puff.
Too late now, rings are on their way, I'll order hone stones today.
Another problem is the freshly painted f/glass tank has a few bubbles under the paint. I'll start a new thread for that.
Cheers

[Triton Thrasher]

Hi Musky,
I would have tried swopping the carbs before diving down theoretical rabbit holes

John

I wonder when you would have found the broken oil scraper ring.

[muskrat]

G'day TT.
Yes that would have been further down the track when it escaped the groove destroying the maxed out bore. I have never re-sleeved a set that had already been sleeved.
Cheers

[A7restore]

I recall an article  from the late 70's about  A10s running rich on the right hand side, I believe they solved the problem with thicker gaskets between the carb and the head. Apparently it was a well know problem back then. How succesful this was is lost in the mists of time

[a101960]

The solution???? was/is an angled bias gasket. In my personal experience it doesn't reolve the problem at all. I found it made asolutey no difference

[muskrat]

Hi Musky,
I would have tried swopping the carbs before diving down theoretical rabbit holes

John

I'm choking on humble pie 
Tonight I thought bugger it. Top end back together with new rings. Fired her up and the same rough on the left. Swaped the carbs and now the right So it is a carb problem. I had run the  carbs through the ultrasonic cleaner (left one 3 times)  Now to save up my beer tickets for a pair on Amals. I'll go with Mk1.5 concentrics as I don't want to make more manifolds for Mk2's. Bugga.
Cheers

[chaterlea25]

Hi Musky,
Sometimes there's no substitute for poking a strand from a wire brush through the carb drillings plus a long nozzle on a can of carb or brake cleaner to blast any remains out

John

[muskrat]

G'day John.
That's what I did to both before and after the bath in the ultrasonic. Those PWK carbs have a few very small holes and a weird 3 hole O ring. The smallest tip cleaner wont fit but a wire off the wire brush will and passed through all the holes.  The "bad" carb did respond a little bit to the choke. I'll buy another set of carb kits and persevere till I can afford new carbs ($1100AU).
Cheers
I'll now move this over to the carb section.