Indian PowerPlus Compression Ratio

[Shaky Jake]

Kevin
On the later Indian Chief “74” standard motors, the pistons stop below the top of the cylinders. On the “74” Bonneville motors, the pistons stop even with the top of the cylinders, as the pistons are different. On the “80” motors, the pistons stop above the top of the cylinders, as the motor is stoked, using the standard pistons.
Burgie

Thanks Burgie. You have seen it all, man!




Kevin


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[tfburke3]

I would say standard 74 chief pistons ,at least 34-53 , come to top of cylinder,80and Bonneville pop up,both requiring a relieved head.
Tom

[Shaky Jake]

I would say standard 74 chief pistons ,at least 34-53 , come to top of cylinder,80and Bonneville pop up,both requiring a relieved head.
Tom

Are they domed, or flat?




Kevin


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[tfburke3]

All flat.
Tom