- Joined
- Oct 28, 2009
- Messages
- 1,217
I have an opportunity to pick up some used tappets that came out of several different Norton engines, both Atlas and Commando.
I am aware of the official advice: "new tappets are machined in pairs and must be re-fitted in the same order as they were removed. They do not interchange".
Back to reality and the cardboard box of used tappets. Aside from the obvious, such as avoid the lifters with chips, scores, and grooves, etc. what advice would you give about putting together a good used set of lifters?
I assume the main point of the "matched" reference is a stacked width of about 0.001 inch less than the bores.
I have good measuring tools and know how to use them.
And yes, buying new is always an option. But perhaps not the only option.
I am aware of the official advice: "new tappets are machined in pairs and must be re-fitted in the same order as they were removed. They do not interchange".
Back to reality and the cardboard box of used tappets. Aside from the obvious, such as avoid the lifters with chips, scores, and grooves, etc. what advice would you give about putting together a good used set of lifters?
I assume the main point of the "matched" reference is a stacked width of about 0.001 inch less than the bores.
I have good measuring tools and know how to use them.
And yes, buying new is always an option. But perhaps not the only option.