Not sure if i need new jets or not....

  • angryeric116
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15 Aug 2013 20:44 #601605 by angryeric116
Not sure if i need new jets or not.... was created by angryeric116
Hello everyone,
I currently have a 4 into 1 exhaust, pod filters, and I am in the process of putting in some Wiesco domed pistons (same displacement but compression goes up to 10.25/1).

Will I need to rejet? If so, how much bigger/smaller should i go?

The bike was running well with the exhaust/intake with 122.5 jets.
1979 KZ 1000 LTD B3
in the process of restoring.
Weisco 1 to 10.25 pistons
unknown 4 into 1 , pod filters, #122.5 main jets, #15? Idle jets

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15 Aug 2013 22:47 #601624 by koolaid_kid
Replied by koolaid_kid on topic Not sure if i need new jets or not....
The AFR will be the same, regardless of the compression ratio. So, unless the jetting was faulty before you will not need to rejet after the changes.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.

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