Guys I have just uploaded a post into General Discussions. It is my introduction and also details of some engine running issues
Detail copied below:
I recently bought a 1980 XS1100 which had had a broken valve repaired by the previous owner. It was running on 2 cylinders when I got it. Although the bike doesn’t look as good as I would like it, at this stage I just want to get it running OK to see if it is generally reliable before deciding how far I want to go with restoring it.
Since purchase I have carried out some works but it is still pretty much running on 2 cylinders with exhausts 2 & 3 only getting warm:
Inspected cylinder bores with a camera. All looked OK with no signs of obvious scoring. Hard to see if there was any crosshatch through the camera
Dropped the oil pan to check for debris as there was a little aluminium in the filter – Pan likewise but pretty good all-round.
One cam was out of time by one tooth. Removed cams. Cams and tunnels were good with no signs of scoring or wear.
Reset the valve timing
Adjusted valve clearances.
Adjusted cam chain
Cleaned and re-sealed the carburettors, replaced float level needle and seats. Static set of float levels. Fitted new diaphragms as one was holed
Engine started OK after finishing all works.
Oil pressure is running at 55 psi at 3000 rpms
No signs of smoke in the exhaust (4 into 1 system)
Hot engine compression was 150 psi on all cylinders with good climb on gauge
All spark plugs are firing.
The engine is not running well enough to play with carburettor adjustments at this time
Swapped plugs 1 & 2 and also 3 & 4 with each other with no change to the temperature of the exhausts.
Engine is revving up OK but tends to backfire through the exhaust I believe due to cylinder/s 2 and or 3 occasionally misfiring
My next though is to try swapping the coil for cyls 1 & 4 to 2 & 3 position to see if the temperatures of the exhausts shift indicating a bad coil
Any other ideas you can offer? Are there still genuine or OEM coils available that will suit the bike as I am happy to replace the coils if need be ?
Thanks………………Kevin
