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Rob H

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Formerly British Open Classic

The West Country

Is the valve spacing (distance between the center of the valve guides) the same of all heads? specifically the 12G295 & the 12G940 or are the individual pairs of valves closer together & further away from the next on one head than they are on another. I hope that makes sense.

Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer


Vegard

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I pick holes in everything..

Chief ancient post excavator

Norway

they're NOT the same on big bore and small bore.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.



Rob H

4314 Posts
Member #: 700
Formerly British Open Classic

The West Country

Bollocks,

Does anyone know the spacing on a 12G295 or have one that they could measure? Mine's off being ported & I've only got 12G940 heads to hand.

Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer


Carl S
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Bristol

I can measure mine tomorrow if you want? how accurate does the measurement need to be?


Rob H

4314 Posts
Member #: 700
Formerly British Open Classic

The West Country

If you could measure that would be great, the more accurate the better really, as I'm trying to workout whether or not I need to offset bore my block and if so by how much.

Thanks

Rob

Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer


Carl S
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Bristol

33mm Rob, centre to centre.

Cheers, Carl.

Edited by Carl S on 21st Jun, 2008.

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