More compression
Stellar HDF Member
Joined: Mar 2020
Posts: 2,227
Likes: 2,144
From: West Coast
If I ever need more stump pulling power will outsource my math and assembly to Fuel Moto!
I am sure they will do a better job, even on a Monday, than I could ever do. They math gooder
I am sure they will do a better job, even on a Monday, than I could ever do. They math gooder
HD EFI Guru
Joined: Jan 2008
Posts: 4,453
Likes: 4,711
If they are doing the build in house then they can measure your engine parts. If they are NOT doing your engine in house then they cannot tell you anymore than anyone else can. The problem comes from the way HD allows the parts to be made. That variation in the parts ie: crankshaft, rods, crankshaft centerline, case height, Cylinder length ect. is what causes the +/- 0.5:1 tolerance in the compression ratio and Fuel Moto cannot change that, nor can anyone else. So only way to know is to sit down and measure the parts, one at a time and make any necessary adjustments to get the compression ratio you are looking for.
Road Warrior
Joined: Feb 2017
Posts: 1,519
Likes: 640
From: Saint Charles, Missouri
To make sure it is correct, and same for both cylinders requires mock assembly to measure crank centerline to top of cylinder and then head volume and machine as necessary to get both cylinders equal to each other.
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