250 Single Engine Numbers Question

[guzzijon]

It's been a long time since I posted. I've got a 1963 250 Scrambler project and a 1964 250 5 speed (Monza? I think) project. I've slowly been trying to disassemble, bag, organize and order parts for both of them.

The 250 5 speed has me at my whit's end with a stuck piston. I've tried everything for the past few years and it seems pretty hopeless. But that can be the subject of another post.

There is a complete 250 engine for sale and I'm wondering if there is a way to tell what year it is or what it came from or if it's a narrowcase or widecase by looking at the engine serial number. I tried looking in the Tom Bailey books I have and Googling it but the only table I could find online was pretty scrambled. The engine number is 102770. My best from looking at the scrambled table I found is that it is a 250 5 speed from 1966.

Also, is there an easy visual way by looking at a picture to tell if an engine is a narrowcase or widecase? Thanks!

Jon

[Ventodue]

<snip>. Also, is there an easy visual way by looking at a picture to tell if an engine is a narrowcase or widecase? Thanks!

Yes, Jon.

Look at the clutch operating arm. On the narrow case, it's not visible, being hidden beneath an engine cover (on the right side). Effectively, the clutch cable disappears into the engine ...

However on the widecase, the arm protrudes above the engine (with the clutch cable being attached to it). See attached photos.

HTH

Craig

[guzzijon]

Thanks! That helps quite a bit.

[DewCatTea-Bob]

[quote= guzzijon ...
" The 250 5 speed has me at my whit's end with a stuck piston. I've tried everything for the past few years and it seems pretty hopeless. "

____ Have you already been aware of the related suggestions mentioned within these thread-posts ?
Links...
viewtopic.php?f=3&t=1561&p=11791&#p11791
viewtopic.php?f=3&t=413&p=2863&#p2863



" I'm wondering if there is a way to tell what year it is or what it came from or if it's a narrowcase or widecase by looking at the engine serial number.
The engine number is 102770. My best from looking at the scrambled table I found is that it is a 250 5 speed from 1966. "

____ Your found source is indeed correct that it's a 1966-model !
(Wide-case motors did not come-out until 1967 !)
__ Here follows links to related threads...
viewtopic.php?f=3&t=1868#p13869
viewtopic.php?f=3&t=1893



" is there an easy visual way by looking at a picture to tell if an engine is a narrowcase or widecase? "

____ Here's another link to a related thread...
viewtopic.php?f=3&t=1948



____ I've seen-fit to include a larger adjusted-version of Craig's helpful posted-pic.


Duke-Cheers,
D.Bob

[guzzijon]

Thanks for the links!