Another afternoon in the workshop, step forwards, step backwards.
(Actually, this was a few days ago)
Stripped down the Concentric I bought, it's not a Premier (which has a removable Pilot Jet, where the original Concentric has a fixed size bushing, and drainable float-bowl).
It's "tired", which I expected, but all there and will make a reasonable back up if the Monoblock proves to be too much of a pain in the arse.
If I decide to try it, I'll probably invest in some updated components, gaskets, etc, and will give it a proper bzzzzzzzzzzzzzzzzzzzzzzzzzt.
The jets (at least) looks identical to the ones for the Monobloc, of which I have found quite a few in Dad's old bits so I can experiment with the main jetting at least (which is only really effective at full-bore....
)
Yesterday I had a go at making the gasket for the Timing Chest
Simple enough: the ball end of the hammer sheers the paper gasket on the hard edge of the facing with only gentle taps. These faces weren't really designed to have a gasket. Remember this is a race-engine designed for shale and grass-tracking with a total-loss oil system... weeping cases were a feature.
Not great for the road or proper tracks though, so gasket making is something I feel I'm going to get lots of practise at.
Assembled up the cam-shaft and cam-followers again and its.... "better". the cam followers aren't sticking, but there's still resistance to movement from the cam-shaft itself. Stripped it down and smeared some R40 onto the cam-shaft and bushes and reassembled it
Liquid gold.....
That was an improvement, but still some stiction. So I stripped it again and smeared a lot more oil onto the camshaft, reassembled and just as I wsa tightening up the very last nut on it's stud.... FUCK. I felt the thread go. Tried the camsaft rotation while it was all assembled and it's a tad better, but I still think it's a little tight, so will order up some 0.8mm paper (the gasket paper I had was 0.4mm) and see if that makes the difference.
In the meantime... stripped it all down again carefully... and fucksticks.
"Luckily" it's the hole at 5-o-clock on the face, which means it's got plenty of wall, and it's a blind hole (so no chance of crap falling out the other end later).
Hit the TracyTools website and found a 1/4" BSF thread repair kit which will hopefully turn up next week (grabbed some Imperial sized drill bits too, seeing as I don't have any at all, the sort of thing I'm sure to need at some point). Also ordered some more gasket paper.
Hey ho, not really that much of a surprise, but still a tad irritating.
