Piston Ring Set

  • Kiddynamite8
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Piston Ring Set

28 Oct 2019 08:12
#813158
1978 KZ650:

I'm looking on partzilla and there are are a few different sets.
Do i need the RING SET,PISTON,STD or the RING SET,0.040in.,O.S.? The .020 is sold out.

Thanks!
1978 KZ650

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  • Warren3200gt
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Re: Piston Ring Set

28 Oct 2019 08:16
#813160
Do your pistons have a number on top? If not they are standard, if they have +1 or 20 they are first bore oversize. If they have +2 or 40 they are second bore oversize.
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Z1000J2 somewhat modified!
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Re: Piston Ring Set

28 Oct 2019 08:28
#813161
Thank you!
I will have to clean the pistons up a bit before i can see any numbers! They are pretty bad!
1978 KZ650

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  • DoctoRot
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Re: Piston Ring Set

28 Oct 2019 12:30 - 28 Oct 2019 12:30
#813168
before you buy pistons rings measure the cylinder bores to make sure they aren't oval or tapered, and check the pistons to cylinder clearance. if they are out of spec you will need to overbore.
'78 1000 Long Term Project
 '80 750G
 750 Twin Big Bore Track Bike
Last edit: 28 Oct 2019 12:30 by DoctoRot.

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