www.ukengineforum.forumotion.com
Please log in , the forum is open to guests who are now able to view most sections, feel free to become a member , you will then be able to post and reply to topics.

Join the forum, it's quick and easy

www.ukengineforum.forumotion.com
Please log in , the forum is open to guests who are now able to view most sections, feel free to become a member , you will then be able to post and reply to topics.
www.ukengineforum.forumotion.com

A Stationary Engine Enthusiasts Forum


JAP 80cc timing

2 posters

www.ukengineforum.forumotion.com :: Stationary Engine Section :: Stationary Engine General Issues

Go down

JAP 80cc timing Empty JAP 80cc timing

Post by makedoandmend Sun Apr 08 2012, 08:49

I am fixing up a little JAP 80cc two stroke and I need to know the point at which to set the timing, can anyone help?

makedoandmend

Posts : 3
Join date : 2012-04-08

Back to top Go down

JAP 80cc timing Empty Re: JAP 80cc timing

Post by Foden Mon Apr 09 2012, 20:09

Hi, there are various models of the small JAP stroker so I am uncertain which model you have. However, the Model O is timed at 3/32nd" before TDC and the Model 34 is timed at 5/64th" before RDC. There is also a Model 80 but I have no spec for that, but I would think that somewhere similar to above wont be too far out.

Pete.

_________________
Too much to do, and so little time!!
Foden
Foden
Life Member
Life Member

Posts : 1410
Join date : 2009-11-04
Age : 73
Location : North Midlands

Back to top Go down

JAP 80cc timing Empty RDC

Post by makedoandmend Wed Apr 11 2012, 17:09

Thanks Pete,
I tried it at 3/32 before tdc and it tries to fire then I timed it at TDC and it really wants to run but won't keep going , but what is RDC?

makedoandmend

Posts : 3
Join date : 2012-04-08

Back to top Go down

JAP 80cc timing Empty Re: JAP 80cc timing

Post by Foden Wed Apr 11 2012, 17:20

makedoandmend wrote:Thanks Pete,
I tried it at 3/32 before tdc and it tries to fire then I timed it at TDC and it really wants to run but won't keep going , but what is RDC?

A TYPO!!! Embarassed Should be TDC, sorry.

Pete.

_________________
Too much to do, and so little time!!
Foden
Foden
Life Member
Life Member

Posts : 1410
Join date : 2009-11-04
Age : 73
Location : North Midlands

Back to top Go down

JAP 80cc timing Empty Re: JAP 80cc timing

Post by makedoandmend Thu Apr 12 2012, 08:33

Thanks Pete,
5/16ths might do it, as I said its close to working at 3/32 so I,ll give it a go and put up a post if it works.

makedoandmend

Posts : 3
Join date : 2012-04-08

Back to top Go down

JAP 80cc timing Empty Re: JAP 80cc timing

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

www.ukengineforum.forumotion.com :: Stationary Engine Section :: Stationary Engine General Issues

 
Permissions in this forum:
You cannot reply to topics in this forum