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Author Topic: picking brains  (Read 776 times)

Offline lowbrowbsa

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picking brains
« on: 15.08. 2012 13:05 »
ihave finally started rebuilding top end  i have .040 hepolight pistons  barrell has been honed but i thimk it my need sum more wot it the max clearence ? also need sum tuning tips its a 58 super rocket ally head single carb scrambler cam roller conversion . just not sure on jet sizes and timing the motor was built by beeza bill (ride in peace) has any one got sum specs on this or a dyno set up
thanks lowbrowbsa. *smiley4*
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Offline Rocket Racer

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  • A kiwi with a racing A10 rig and too many projects
    • NZ Classic Sidecar Racing
Re: picking brains
« Reply #1 on: 15.08. 2012 22:32 »
You might want to mention the compression ratio (or describe the piston top if unsure),
and what carburetor size/type you're planning to use. A 10TT9/concentric or monoblock will all have different settings.
Have you measured the piston to bore clearance at all? Is this a fresh bore or an old bore rehoned?
more info would be helpful...
Cheers
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A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Offline lowbrowbsa

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Re: picking brains
« Reply #2 on: 16.08. 2012 11:21 »
orr yea it 9to1 carby is amal 930 old bore and have 4 thou clearence
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