I'm trying to put numbers in Big Boyz Calc. Does anyone know what the Specs are for S&S's sidewinder 124" pistons? Model of the kit is 0931-0541 and or 910-0338. Both numbers are on the box. I've hunted around on line and I haven't been able to figure out if this is the same pistons they use in their Hot setup or standard? What are the CC for tops on either. Thanks
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The best way is to consult S&S.
Armin.
That kit (seen here (https://www.sscycle.com/products/124-inch-standard-compression-big-bore-kit-for-2007-16-big-twins-wrinkle-black-finish/)) is as follows:
Description
Cylinder, Kit, 4-1/8" Bore, Stock Bolt Pattern, 5.004",4-5/8" Stroke, 106-3491A, WBlack, 2007-up bt.
That is a flat top piston, 5.004" tall 4.125 bore cylinders.
For CR calculations, use 4.125 bore, 4.625 stroke, .045" head gasket and -1.5cc valve relief. With a zero deck, and standard 86cc TC chambers, 11.4:1. With 95cc CVO chambers, 10.5:1.
With a .030" Cometic HG and 95 chambers, you get 10 3/4 static.
Measure everything you have as it goes together, so there are no surprises. The devil is in the details...
Thank You Rigid thumper. I appreciate it.