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Old November 12th, 2018, 06:43 PM   #6
NinjaBraap
NinjaBraap
 
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Name: Tom
Location: Long Beach, California
Join Date: Dec 2016

Motorcycle(s): 06 Ninja 636, 2016 Yamaha R3 (Street/Track), 2019 Ninja 400 Project Racebike

Posts: 175
Blog Entries: 2
Well started right up and warmed up just fine today. Did my compression and leakdown checks after thoroughly warming it up. Not very different from before.

Cylinder 1: 125 psi warm (full open throttle), 20% leak with air past the rings, no leak on valves.
Cylinder 2: 135 psi warm (full open throttle), 25% leak with air past the rings, no leak on valves.

So, not too different. I'm going to finish putting the bike back together though and ride it, see how it does. All in all though for having bought it for $250 with a clean title, with a rusted out top end, partially seized pistons and fully seized rings, this is pretty good. I replaced everything except the pistons and the cylinder sleeves, just cleaned everything and made sure everything was in tolerance or close. Only spent probably about $150 in parts and materials for the top end rebuild.
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