Re: Any Vintage two stroke guru's out there?
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Re: Any Vintage two stroke guru's out there? Mike Corey 01-01-2008
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Posted by Mike Corey on January 1, 2008, 3:01 am
soundadv@sonic.net (T.Alan=A0Kraus) wrote:

>My elsinore has a compression release, does
> yours?

No, it doesn't even have the threaded hole for that option. I looked in
the original 1974 owner's manual, and on page 9 it shows a removed head,
just one hole for the spark plug. Maybe you have an aftermarket head, or
someone machined it?


"War is an ugly thing, but not the ugliest of things; the decayed and
degraded state of moral and patriotic feeling which thinks nothing is
worth a war, is worse." --- John Stuart Mill:=A0


Posted by Rick Cortese on January 2, 2008, 2:25 pm
Mike Corey wrote:
> soundadv@sonic.net (T.Alan Kraus) wrote:
>
>
>>My elsinore has a compression release, does
>>yours?
>
>
> No, it doesn't even have the threaded hole for that option. I looked in
> the original 1974 owner's manual, and on page 9 it shows a removed head,
> just one hole for the spark plug. Maybe you have an aftermarket head, or
> someone machined it?

IIRC: The MT250 has the dual plug/compression release hole. Pretty sure
you can swap CR to MT w/o problem but to go the other way you need to
either drill a hole in the MT head or remove a ~6mm stud.

12 mils is on the lower end of points gap. Did you set it that low or
did someone else do it?

For some reason I am a bit timid this morning about giving diagnosis. I
mean it could even be something silly like it is skipping a beat/4
stroking during starting.

At any rate, timing is set for points to just break with the piston at
1.5mm or 60 mils before TDC. 1.5mm is a lot, you can just about check
that with a ruler. You should have a DVM or indicator light to check for
the points opening because in my experience eyeballing it isn't good enough.

Rick

Posted by Wudsracer on January 7, 2008, 8:17 pm
>On Tue, 1 Jan 2008 02:01:40 -0600, AWR7MMSTW@webtv.net (Mike Corey) wrote:

>soundadv@sonic.net (T.Alan Kraus) wrote:
>
>>My elsinore has a compression release, does
>> yours?
>
>No, it doesn't even have the threaded hole for that option. I looked in
>the original 1974 owner's manual, and on page 9 it shows a removed head,
>just one hole for the spark plug. Maybe you have an aftermarket head, or
>someone machined it?
>
>
>"War is an ugly thing, but not the ugliest of things; the decayed and
>degraded state of moral and patriotic feeling which thinks nothing is
>worth a war, is worse." --- John Stuart Mill: 
********************************************************

Every two stroke motor will spit back if it's timing is too early.

I feel sure that this is your problem.




Wudsracer/Jim Cook
Smackover Racing
'06 Gas Gas DE300
'82 Husqvarna XC250
Team LAGNAF


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