Valve Clearances Acceptable?

Rockitdoc

Rockitdoc

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Location
Fort Collins, Colorado
So, I got my new shims from Wolfgang and after more arithmetic than I've done in 40 years I came up with the following combinations of clearances for the RGS1000SFC project I've been working on:

Exhaust (0.25-0.30mm optimum?)
1=0.248
2=0.264
3=0.250

Inlet (0.20-0.25mm optimum?)
1=0.250
2=0.218
3=0.230

What d'ya think?  Button her up and try it out?


 
laverdakeith said:
What are you using to measure your valve clearances to a 100th of a mm?


  Keith
Click to expand...
I'm not.  Those numbers are just calculated based on the shim thickness measured to 0.0001 in. and converted to mm.  Probably shouldn't use that many significant figures, but it makes me feel more like a real machinist.
 
Not being an engineer, and doing the clearances infrequently, I find the scale on a micrometer  easy to read wrongly. Are there digital ones at reasonable cost about...best sources? See lots of digital Verviers though...
 
Rockitdoc said:
I'm not.  Those numbers are just calculated based on the shim thickness measured to 0.0001 in. and converted to mm.  Probably shouldn't use that many significant figures, but it makes me feel more like a real machinist.
Click to expand...

OK so what are you using to measure to a tenth? The shims are supplied from the factory in increments of 0.07mm or 0.002" so there is your tolerance on valve clearance.
If you want to feel like a real machinist bathe in soluble oil and rub swarf into your nether regions  ;)

  Keith
 
laverdakeith said:
OK so what are you using to measure to a tenth? The shims are supplied from the factory in increments of 0.07mm or 0.002" so there is your tolerance on valve clearance.
If you want to feel like a real machinist bathe in soluble oil and rub swarf into your nether regions  ;)

  Keith
Click to expand...

http://www.youtube.com/watch?v=WLlGcNlseR0
 
nick7 said:
Not being an engineer, and doing the clearances infrequently, I find the scale on a micrometer  easy to read wrongly. Are there digital ones at reasonable cost about...best sources? See lots of digital Verviers though...
Click to expand...

Digital Vernier is nice and handy for this and that, but a Micrometer is more accurate.

As I get older then digital has become more important as my eyes get worse + digital can store a reading before withdrawing. Reading the scales manually is just practice though.

Can't go wrong with Mitutoyo - for the most part you get what you pay for. I bought a ?5 Digital Vernier from Aldi for home use, does some sort of reasonable job but not in the same league.

Haven't bought any expensive stuff for years though as various employers have supplied tools.

 
Haven't bought any expensive stuff for years though as various employers have supplied tools.
Click to expand...

Do they know how generous they've been? :D

Have a Draper digital micrometer- works fine.  Never intend to set the valves on a Laverda ever again, it's a pain I shall leave to people who know what they are doing.  Hello Keith!
 
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