www.stationaryengineforum.net
Please log in , the forum is open to guests who are now able to view every section, feel free to become a member , you will then be able to post and reply to topics.

JAP 80cc timing

View previous topic View next topic Go down

JAP 80cc timing

Post by makedoandmend on Sun Apr 08 2012, 07:49

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

Re: JAP 80cc timing

Post by Foden on Mon Apr 09 2012, 19:09

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
Life Member
Life Member

Posts : 1123
Join date : 2009-11-04
Age : 65
Location : North Midlands

Back to top Go down

RDC

Post by makedoandmend on Wed Apr 11 2012, 16:09

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

Re: JAP 80cc timing

Post by Foden on Wed Apr 11 2012, 16:20

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
Life Member
Life Member

Posts : 1123
Join date : 2009-11-04
Age : 65
Location : North Midlands

Back to top Go down

Re: JAP 80cc timing

Post by makedoandmend on Thu Apr 12 2012, 07:33

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

Re: JAP 80cc timing

Post by Sponsored content Today at 03:55


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

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