| The Gpx 150cc Yx Build Thread!!
Well The Engine Is Here And Doug And I Are Going To Get To The Bottom Of What We Can Do With This Engine To Turn It Into A Fire Breathing Monster. At 1st Glance You Can Tell This Thing Is Beefy, Look At The Engine Mount Casting. We Have A 57mm Jialing Crank So Doug Is Talking About Swapping Cranks Right Away But 1st We Are Going To Do Some Measuring Up To See If The New 178cc Takegawa Scut Deal Will Work. To Do This We Will Have To Measure How Much Heigth Above The Gpx 150 Casting The Wrist Pin Is At Bdc. I Know For The Budget Minded You Can Buy A 61mm Akunar Piston And Bore The Cylinder To Get You To 155cc And Up Compression To 12:1. Should Be A Good Upgrade For $60 Or So. Initally Doug Wanted To Go 57mm Stroke By 64mm Bore But Once We Get More Into It We Will See. Doug Is Having A Hard Time Loging In To Planetminis But Should Be Back Up And Running Soon With A Ton Of Pics Of The Engine Torn Down To The Bare Bones. |