Hello,
Looking into swapping out the factory low comp 7.x:1 pistons for some 8.5:1 pistons in my stock 80" Shovelhead. Bike is a 1982 FXRS. Problem is it's a very low mile bike I got from the original owner and I would like to get some standard bore pistons. I can't seem to find very many 8.5 pistons let alone 8.5 standard bore pistons. Is it even possible to just pop some 8.5 standard bore pistons in or will I have to go overbore? I doubt a 7.5k mile motor needs it. Also will I need to have anything balanced? Just doing a mild build and can't find definitive answers thru research. Any advice appreciated.
Thanks
Looking into swapping out the factory low comp 7.x:1 pistons for some 8.5:1 pistons in my stock 80" Shovelhead. Bike is a 1982 FXRS. Problem is it's a very low mile bike I got from the original owner and I would like to get some standard bore pistons. I can't seem to find very many 8.5 pistons let alone 8.5 standard bore pistons. Is it even possible to just pop some 8.5 standard bore pistons in or will I have to go overbore? I doubt a 7.5k mile motor needs it. Also will I need to have anything balanced? Just doing a mild build and can't find definitive answers thru research. Any advice appreciated.
Thanks
Comment