[ad_1]
Whereas the painted elements are away, I’ve obtained the engine on the bench. Method again after I established the state of the bores, mains and large ends and what I need to do now’s to trial match the brand new giant bearing crank into the unique circumstances.
A short while within the kitchen at dwelling noticed the principle bearings fitted:
It is then not more than an hour’s work to assemble the crankshaft and the timing gear; the excellent news is that the timing gear bushes already on this case are on superb situation with little or no play. Disgrace I already purchased a brand new set.
It was clear that the crankshaft was a bit tight on reflection; the setup with the DTI reveals no finish float and the crankshaft was mildly stiff to show, however then it does have a big plain bush at one finish:
Investigation revealed that the drive aspect bearing wasn’t fitted totally dwelling in opposition to the crankshaft net. With that fastened, we’ve got 0.34 mm finish float:
That is about 0.013″; we wish a most of 0.005″, in accordance with BSA Service Sheet 208 – Waller is silent on the topic. Since 0.005″ is 0.13 mm, we have to shim 0.21 mm; I’ve purchased 0.25 mm shims which ought to give us 0.09 mm finish float, or 0.003″.
Extra later when bits arrive.
[ad_2]