expletive deleted Valve shims

[jjdugen]

OK Here's the thing.
Valve shims are tight with 2.10 shims.
Clearance should be 3 of whatever the things are in Metric (thous I understand).
The next size down that seem to be available are 2.05.
Put them in but I have clattery valve clearance.
I need to have a shim of 2.07 for proper clearance.

Unless someone knows where to find 2.07 7mm diameter shims, I was thinking that I could cut down a feeler gauge to give me the additional .02 to make the final shim size 2.07.
Anyone done this?

By the way, the sooner we get out of Europe and go back to inches and thous the bloody better!
____________________
The CBR900RR has been sold. Aprilia Falco worms its way into my heart.
Try Soi 23 on Amazon for a good read.... Self promotion? Moi?

[Nobby the Bastard]

[jjdugen]

My difference appears to be .05 as is, and it clatters. Inlet clearance should be .03 of these foreign things. They seem to quite a bit thicker than 3 thou!
____________________
The CBR900RR has been sold. Aprilia Falco worms its way into my heart.
Try Soi 23 on Amazon for a good read.... Self promotion? Moi?

[bikenut]

wemoto, wurth, cmsnl?
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nuts about bikes

[dydey90]

[MCN]

[Ichy]

[jjdugen]

Hi

Been out today, clattery valves not withstanding.
Its a '97 CBR900RR Fireblade. About 30,000 miles.
The shims in question are the inlets. 4 of them (no 3 no. 4 cyl.) are marked 2.10, measured as such on my micrometer.
These are tight, minimal clearance.
The next available smaller size is 2.05. This gives a slack fitting number 4 feeler guage. I will call these metric thous because no-one seems to know what the meteric number is.... miili cintimetres?
Therefore, logic would dictate that I need a shim of 2.07 thickness to give the correct clearance of 3 of these things.
As I can't seem to source a 2.07 shim, my original question was, can I cut up a number 2 feeler gauge to take up the slack?

Vote out, bring back furlongs and chains, threepeny bits and tanners, pints and gills, its what won us two world wars and the world cup, all downhill since then!
____________________
The CBR900RR has been sold. Aprilia Falco worms its way into my heart.
Try Soi 23 on Amazon for a good read.... Self promotion? Moi?

[Nobby the Bastard]

I would be looking at the cam chain tightener, can't see that the shim clearance is the issue.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Ichy]

Only thing I can find is:
Intake: 0.13--0.19 mm

Exhaust:0.19--0.25 mm

I cannot find anything that refers to '3'?

I can honesty say that I have never heard of a number 4 feeler gauge.

0.1mm is a tenth and 0.01mm is a hundredth. 0.001mm is a thousanth of a millimetre or a micron. There you go, someone does know what they are called .
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https://www.metacafe.com/watch/1972097/how_to_behave_on_a_forum/

[Pete.]

[Kickstart]

[lihp]

[lihp]

Threads like this is why I get worried by "self-serviced" used bikes.

People who don't even know how to use the metric system, unable to accurately measure and communicate clearances with a feeler gauge messing around with valve shims.

OP hasn't even told us what his measured clearances are.
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covent.gardens: lihp is my most favourite member ever

[Pete.]

Any news on this. Intrigued to find out where this rattle has come from.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[CHR15]

are they over or under bucket shims?
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Turbocharged drag thing / project death weapon / GK73A
Ste: I'm not entirely sure how you'd go about verbally abusing someone with a potato but I'm sure it's possible.

[Hong Kong Phooey]

OEM do shims in odd sizes like 298. Doubtful you'd need to get it that close as the tolerance span is greater than the 'off the shelf' rounded sizes available in the aftermarket.

You could polish it down by 0.01 per side to tailor an existing shim but as the shims are case hardened you don't want to take much than that off, and it's hardly worth the effort.

Would also require you to invest in digital verniers to check - dirt cheap these days and accurate enough.
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'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8

[mentalboy]