What is a timing key?
- Thread starter trailhorse212
- Start date
- Tags key timing
Same comment I made in my Tote Gote build thread. Researching flat head (Raptor) cam indexing and ran across that info. It was surprising to me. The key either at the stock setting or with an offset makes timing far quicker, but there are some variances between engines.
The degree wheel cost me some printer ink, and a little bit of work with sissors and glue. The entire process of indexing was very simple, but to time it, I suspect that using an inductive light and remove 12VDC source while spinning the motor is more accurate that eyeballing the side of the magnet against the coil.
The degree wheel cost me some printer ink, and a little bit of work with sissors and glue. The entire process of indexing was very simple, but to time it, I suspect that using an inductive light and remove 12VDC source while spinning the motor is more accurate that eyeballing the side of the magnet against the coil.
Same here Dave.. with a basic timing light, degree wheel and a piston stop you can find your stock timing... thats already in your flywheel. Then adjust timing from there with a off set key. This old guy in the video gives you a basic Idea.
https://www.youtube.com/watch?v=ez2ZjI1DxPw
https://www.youtube.com/watch?v=ez2ZjI1DxPw
Prowler and I are talking about not using a key at all. Set timing with a degree wheel and torque it down. Then verify dynamically.
Maybe this is all common knowledge that no one ever in the history of OldMiniBikes bothered talking about or photographing, and the OP and I are the last to know. :thumbsup: Quite a few of those instances lately.
Maybe this is all common knowledge that no one ever in the history of OldMiniBikes bothered talking about or photographing, and the OP and I are the last to know. :thumbsup: Quite a few of those instances lately.
I was surprised too - to learn that most of the big power motors do not use any key at all and lapp the flywheel to the crank with valve lapping compound. It just seems counter intuitive at first but I understand it. I am very familiar with full sized degree wheels in full sized motors, I haven't got around to buying a tiny little degree wheel yet but I was looking at them a while back.
What do is find my stock timing with the flywheel I am using...
Then put a mark on the flywheel and block...
I then put timing tape on the flywheel...
Now I can either advance or retard it with out guessing.
Yes lap the flywheel good to the crank...then make sure both surfaces are super clean...
Torque to 80-100 foot pounds...
I use the 1/2" impact... Mine always gets it between 80-90 foot pounds...
Then put a mark on the flywheel and block...
I then put timing tape on the flywheel...
Now I can either advance or retard it with out guessing.
Yes lap the flywheel good to the crank...then make sure both surfaces are super clean...
Torque to 80-100 foot pounds...
I use the 1/2" impact... Mine always gets it between 80-90 foot pounds...