Hitchcocks Forum

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Inside Kevin - The Timing Chain


also, what is that yellow stuff? it is to seal the insides?


















Tabellarius de verbis ostensor gaudium

The factory painted the inside of the crankcases with dense yellow paint, ostensibly to overcome any problems with metal porosity. REgards Dick.

Nice little video Simon. Enjoyed that. Your timing chain was proper slack eh? Wee bit too much in the distributor chain too methinks. What clearances do you have on your valves? Sounded a little bit worse than my King Rattler SIA Interceptor. TTFN Jack

is it possible to adjust the distributor chain? Does the distributor move if the bolts are slackened?



I don't know the valve clearances, only done 500 miles since obtaining Kevin. the previous guy left very comprehensive note explaining all sort, plus the valves were adjusted for a hot engine. I guess it will be next spring or summer before I get to find out.



just a few days now before my return to the UK, and Tornado my military bullet!

Scaly,



see the first item on our hosts' paint list: http://www.hitchcocksmotorcycles.com/ac ... ols-paints



A.

Ok, well that seems to answer that question. It is very nice with yellow though.

Aye, Distributor bolts are in slotted holes. If your Timing chain is the measure of the maintenance, might be a good idea to check the primary chain,valve clearances & all oil levels too. Sounds like a baggy valve in there somewhere. I do like the Meteor Minors.

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Already did the primary chain, just the gearbox oil level left.






will check the valves, but not before xmas when I get back to France. I may be asking for more advice and knowledge then.

Scaly, judging by the very fresh appearance of all the "inside" shots you have shown so far I'd say that the rebuild was very thorough and quite recent. Which means that you may just be taking up the slack of initial wear on the chains, the sort of job you'd expect to do on the first real service. The valve noise could be a number of things (slightly worn rocker spindles for instance,) which are a consequence of overall age of components and not really worth trying to cure by replacement with new items. However, valve noise is sometimes created by excess endfloat of the camshafts, I aim for a max of 5 thou but 3 is better if you can achieve it. Enfield listed a thrust washer to go behind the cam sprocket but not the shims although our Hosts have them. I have an even better source of shims if you need any?

REgards, Mark

Hi, Valve clearance nil all round pushrod turning, 5 thou exhaust for high speed use,(which works on bullets too!)I compromised and use 2thou for everyday use. timing chain 1/4 inch play. dont over tighten distributor chain, just a bit of slack ok. and check you have an 18t gearbox sprocket, have seen these mistaken for 700 motors and grossly overgeared. Vince