Heymow - Lawnmower Racing Forum

Engine Help => Kohler Engines => Topic started by: cerialsledder on July 27, 2015, 02:36:48 pm

Title: offset keyway?
Post by: cerialsledder on July 27, 2015, 02:36:48 pm

Ok back to the stock motor.  Trying to advance the timing on the stock motor but trying to figure out how far to advance it and I know I'm limited by the keyway offset.  I remember talking to cromwell on the phone about it but I can't remember and I have lost his number.  Anyone have ideas?

Title: Re: offset keyway?
Post by: chavez on July 27, 2015, 07:53:55 pm

Really no need for a key, but unless you have a degree wheel, it's a guess.  I made a pointer and Mark on my crank pulley so I can easily find tdc, then marked off (by 2° increments up to 32°btdc on the pulley). Have a Mark on the flywheel that lines up with a certain spot on the coil. Pretty easy to adjust once the homework is done. Of course this only works with this one engine/pulley combo. All that once the flywheel is lapped to the crank.

Title: Re: offset keyway?
Post by: cerialsledder on July 28, 2015, 08:27:21 am

Quote from: chavez on July 27, 2015, 07:53:55 pm

Really no need for a key, but unless you have a degree wheel, it's a guess.  I made a pointer and Mark on my crank pulley so I can easily find tdc, then marked off (by 2° increments up to 32°btdc on the pulley). Have a Mark on the flywheel that lines up with a certain spot on the coil. Pretty easy to adjust once the homework is done. Of course this only works with this one engine/pulley combo. All that once the flywheel is lapped to the crank.

So what I got from your reply is that if I lap my flywheel to my crank then the key is really not needed?  Lapping them makes it enough to where they will no slip?

Title: Re: offset keyway?
Post by: chavez on July 28, 2015, 10:41:20 am

If torqued properly yes, but only on a racing engine.

Title: Re: offset keyway?
Post by: cerialsledder on July 28, 2015, 11:01:35 am

Quote from: chavez on July 28, 2015, 10:41:20 am

If torqued properly yes, but only on a racing engine.

What is your definition of racing engine?  To me all engines can be racers till they grenade LOL!!!

Title: Re: offset keyway?
Post by: chavez on July 28, 2015, 01:04:55 pm

IE: not used to cut grass...