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Gs750 big bore kit

  • Thread starter Thread starter david fava
  • Start date Start date
david fava said:
you are correct the wiseco big bore kit is 4mm oversize (65mm to 69mm) but you actually only bore 2mm (radius) meaning you have actually made the bore 4 mm oversize.

getting back to the gs 850 barrels.you could get genuine 1mm oversize pistons and this would bring up the ccs to approx 900cc.the problem is they are expensive and and hard to get. depending on which suzuki dealer you deal with some have the rings but not the pistons and vise versa.

does anybody know of a suzuki dealer in america that deals with old stock genuine parts.l live in australia and we have a couple of dealers like that but l have been un succesful
Click to expand...
70mm= 870cc
71mm= 893cc
72mm= 918cc
MTC used to sell 70mm & 72mm pistons for GS750 8-valve motors. The 72mm required re-sleeving.
 
You are measuring the spigot area of the sleeve ( the bottom), which is smaller that the sleeve O.D. in the block. You will be OK
 
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