NewShee Posted March 19, 2019 Report Posted March 19, 2019 So did a squish test by laying my solder across the piston and rolling engine over by hand and it measured .080" to big and out of spec. The engine is a fresh build top and bottom with everything new and stock except for the following exceptions. Stock cylinders are a fresh bore and hone to 64.75mm, pistons are Wiseco 513M06475. Base and head gaskets are stock as well as the stock Yamaha head. What is the most effective way to put my squish into something more reasonable like .050"? Quote
97Screamer Posted March 19, 2019 Report Posted March 19, 2019 Are you using OEM yamaha gaskets? If they are aftermarket sometimes they can be much too large. Quote
NewShee Posted March 19, 2019 Author Report Posted March 19, 2019 Yes, stock Yamaha base and head gaskets. Quote
ride.race.live Posted March 19, 2019 Report Posted March 19, 2019 are you running the solder aligned with the center / pivot pin of the piston? Quote
NewShee Posted March 19, 2019 Author Report Posted March 19, 2019 Yes dead center across the piston touching the cylinder wall on each side held in place with a small dab of grease. Quote
BANSHEE HP Posted March 19, 2019 Report Posted March 19, 2019 if its a stock head that's what the squish is supposed to be … 2 miles. get an aftermarket head with interchangeable domes/combustion chambers. Quote
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