Actual cc of the 850?
- Thread starter Bonzo
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baz
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828.88 I believe
Fast Eddie
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All depends on your rounding up.
If you use 3.141 it comes out at 828.723cc… which should be called 829.
If you use 3.14159 it comes out at 828.878cc… even closer to 829.
So IMHO, correctly rounded, it should be called an 829cc.
It was robbed of a claimed 1cc by lazy rounding up !!
If you use 3.141 it comes out at 828.723cc… which should be called 829.
If you use 3.14159 it comes out at 828.878cc… even closer to 829.
So IMHO, correctly rounded, it should be called an 829cc.
It was robbed of a claimed 1cc by lazy rounding up !!
SteveBorland
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Depends on the oversize really 
concours
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But then given back with side cover badges, like Robin Hood
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At . 020 over its 839.678993965254Depends on the oversize really
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Fast Eddie
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Approx …
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I once bored an A65 . 080 over and fit it with 10.5:1 pistons and a head from a flat tracker.If you really want an 850 just bore it to +0.040" . (850.547) The extra performance will blow your mind!
That bike was insane but you didn't want to venture far from home as things would fall off at the most inopportune times.
Matchless
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Would be fun to have some side panel transfers made up with that.
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Both of my 850's are on .040 rebore.If you really want an 850 just bore it to +0.040" . (850.547) The extra performance will blow your mind!
Let the power flow.
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+0.060"
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Should see me out then
.
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Then +0.080"
920cc
920+0.020"
920 COMPREHENSIVE CONVERSION KIT
KIT COMPRISES OF:050016 - 920 CYLINDER LINER X2050163 - 920 PISTONS (COMPLETE WITH RINGS & CIRCLIPS) X2050207 - 920 GUDGEON PINS X2920HG - 920 COPPER HEAD GASKET050150 - 920 GOLD DECALS X2 (ALSO SILVER ON PART NUMBER 050149, BLACK ON PART NUMBER 050148 AND RED ON PART NUMBER 050151) PLEASE STATE
www.rgmnorton.co.uk
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