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32,104 Posts
big bore kits
You mean pistons.
Wiseco and JE should list +1mm piston sets but it is expensive boring and replating the block.
Or you could run 954 pistons which give slightly more compression as well.
 

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Premium Member
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32,104 Posts
Just buy a 954 engine, it bolts right in. Bigger bore, higher compression, lighter pistons, slightly hotter cams, bigger throttle bodies, better injectors... it's basically universally better.
I agree. I just don't think boring the 929 has enough bang for buck. Building the engine yourself you'd likely spend US$1200 just to get 25cc which is hardly significant.
 
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