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peter1
 Post subject: rebore size
PostPosted: Fri Mar 23, 2007 5:59 am 
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998cc
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Location: Adelaide
Hi - my maths aint what it use to be - what capacity does a 1275 become with a rebore to take +60 pistons?
Peter :)

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cooper63
 Post subject:
PostPosted: Fri Mar 23, 2007 6:31 am 
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848cc
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Location: Ulverstone, Tas
G'Day peter. I think it is 1330. Are you building a new motor? Do you have any plans of doing club days or motorkahna's?
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peter1
 Post subject:
PostPosted: Fri Mar 23, 2007 7:11 am 
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998cc
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cooper63 wrote:
G'Day peter. I think it is 1330. Are you building a new motor? Do you have any plans of doing club days or motorkahna's?

G'day - yes, freshening up the S - what started as a new head gasket just grew and grew - as it does - and now nearly everything has been replaced or repaired, inc gearbox. Crank, pistons etc balanced too.
Will consider club days etc, but this car is mainly for the road and won't have a very hard life. I reckon Motorkhanas are too harsh on cars - ok if that's what you want to do, but I'm a bit gentler on cars these days.

Anyone able to confirm the 1330 size?
Cheers
Peter :)

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Mick
 Post subject:
PostPosted: Fri Mar 23, 2007 7:23 am 
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Location: Under the bonnet son!
I'm pretty sure it is.

I always consider the 2500 dollar replacement cost of a new S crank when mistreating an engine. Always manages to straighten out my priorities!

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peter1
 Post subject:
PostPosted: Fri Mar 23, 2007 7:35 am 
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Mick wrote:
I'm pretty sure it is.

I always consider the 2500 dollar replacement cost of a new S crank when mistreating an engine. Always manages to straighten out my priorities!


Er, yes, that's enough motivation for me to be "kind" to it. I'm spending that much on parts and machining now.

1330 it is then?

Peter :)

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1972 Honda 750/4 (his),1976 Honda 400/4 (hers)
1982 Honda CB1100RC (ours)
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AEG163job
 Post subject:
PostPosted: Fri Mar 23, 2007 9:16 am 
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1,328.73 cc precisely according to my math. But I failed Y12 maths (in the days when they actually failed students) so I await correction. :oops:

60" thou oversize = 72.136mm bore x 81.28mm stroke.
Curse metrication, daylight saving and political correctness!

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peter1
 Post subject:
PostPosted: Fri Mar 23, 2007 9:34 am 
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:lol: agree!!

Well done.

Peter :)

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