The Abbaye
637 North 3rd Street
Philadelphia, PA 19123
Jason McElroy will be giving another Tech Talk at 2WT tonight – 24 May 2011. Some of the things he’ll be discussing are listed below. Be there or be square!
Tech session will begin at 7:00 PM.
From Jason:
All,
My number’s up again for tonight’s tech night.
Ever bought a used motor or started to rebuild one and wondered whether you need new pistons? A bore job? A new cylinder?
We’re going to talk about how to evaluate the state of the parts you’ve got and identify what needs to be done without spending money unnecessarily. I’m not in the “replace everything” while you’re there camp. Especially given the superior metallurgy and machining standards of original parts on many vintage bikes.
I suggested previously that we might discuss cylinder head issues too, but think it will be best to cover less material and have more discussion. We’ll save cylinder head evaluation for another time.
Some things we’ll touch upon tonight:
- measuring or “mapping” out cylinder bore dimensions
- measuring piston diameter at the correct location. Did you know that pistons aren’t perfectly round/cylindrical?
- Visually inspecting cylinder walls for scuffing and scoring
- Visually inspecting the state of piston skirts to understand how motor was running when last together
- How to install piston rings and set piston ring end-gap
- How to use a bore gauge and a micrometer
Much of this talk will involve actual parts and audience volunteers, so we’re gonna need a clear table.
See you then.
Jason
Two Wheel Tuesday Tech Night Schedule
-Scott
