I have heard about an engine upgrade available for the 636 engine, something like a big bore type kit that brings it upto 7-something cc. I cannot find any info online about this or who is even putting it out....any ideas?

 

Something like this?





662cc
Sugg Retail $580
Dynoman $469.95
2.716" or 69.00mm
1mm oversize
Stroke - 43.80mm
CK176

Cylinder boring and re-plating required
Piston: TBA Rings: TBA Piston Pins: TBA
Retainer Clips: TBA Optional Spring Steel Head Gasket: TBA

 

Plus $600 for boring & replating and any labor & parts costs.

 

Nothing is cheap, welcome to KF Cheese

 

yes welcome to KF.

 

1mm isn't much of an overbore -

 

your right, i wouldn't bore any 636 more than it is all ready, these motors have strong bottom end on them all ready, if u are lookin for more power i would just port and polish the head and some aftermarket cams will be nice, or just pic up a nos kit for half the price and call it a day

 

i'd either do the stroker without the bore (saves a lot of expense), or nitrous, or a motor swap

 

or a stroker with nitrous

 

Gentlemen, this is exactly why they invented the zx-10r. God bless the litre bike