Gonna do the shims on the Divvy 6 if it rains this weekend.
First question relates to the feeler gauge. Is it true that when using more than one feeler gauge 'leaf' to make up a thickness that you add a bit for luck? How much? Any other feeler gauge accuracy tips?
Second to the valve lifting tool. It's a wedge to lever the tappit down and a strip of metal to hold the valve open. Do these vary between car and bike engines or can I jut buy one from my local motorfactor?
Thirdly whats the procedure where a clearence is *very* close to being out of tolerance. Leave it for next time?
Any general tips on measuring clearences? (Obviously I've got the haynes manual)
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Parp, Parp!
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Hello Toad,
The best advice about feeler gauges is to keep them clean. Rusty just won't do! If they are clean and shiney there's no need IMHO to add or subtract anything. However, for ease of use a single gauge can't be beaten.
Cheers,
El Dingo (Martin).
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My feeler gauge is rusty so *will* be buying a new one ASAP.
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Parp, Parp!
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I seem to remember that during my RN apprenticeship days we used something called crocus paper to keep our measuring tools rust free. This was an extremely fine emery paper which was safe to use, even on a six inch rule. We had to clean and oil all our tools - feeler gauges included - once a week, usually on a Saturday morning. It never seemed to harm their accuracy. We also used the feeler gauges to learn how to read a verniered imperial micrometer (accurate to 0.0001 of an inch) and can't remember seeing any significant inaccuracies (no more than a thou), even when measuring 3 or 4 leaves. Sorry for the ramble - I got carried away!
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Hi. It is now bound to rain this weekend ;>)
I've never heard of the 'add a bit for luck'.
You are lucky if the divvi uses a valve lifting tool, all shimmed bikes I've played with need the cams and followers removing to get at the shims (shims between followers and valves).
If a clearance is inside the published figures, I'd leave it alone - be prepared for a shock at the price of shims.
Following on from that, by writing all the clearances down, and checking the installed shims (measure rather than accept the stamped number) it is possible to move them to different valves rather than replace all thos that are out.
Have fun and be careful not to drop any where you can't het them back (hint to stuff rag in timing chain tunnel).
Martin
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You are lucky if the divvi uses a valve lifting tool,
Wasn't luck - I deliberately bought a bike with shims in easy[1] reach!
Next time I'm gonna get a bandit 12 with lock nuts to adjust clearences. You don't even need to take the carbs off.
[1] For values of easy that include f**king difficult.
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Parp, Parp!
Note: All Toad posts come with an implied smiley.
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