vintagecota

Yes, your engine is probably siezed.

Typically there is a spacer on the right side only to make up for the missing speedo drive. I'll have to measure it for you.

Sure, sounds like a good rainy-day project. We will be having a lot of rainy days here very shortly.

There are a few places on the west coast of North America, including my house.

The 200 has the push-in cap with a vent tube attached that was not used on many bikes and is not reproduced as far as I know. The earlier 123-172-247-348 cap fits the hole and you can add a vent tube to it, or add a vent just ahead of the cap like I did to mine.

Happy Birthday, Dave! ... and many more! Shaun

They're called 172s but are really 156cc. Did you get rid of it Davieboy? I've got a few kick shafts left, but they're not real cheap...

Hmmm..... who to believe? Big John or some guy that can't spell Montesa?

Nice Stuff, Charlie! I like it all , and I really like the mix of different instruments, strings, flute, and orchestration. "Writing on the Wall"is my favorite track. I like the jazzier songs that leave you more escape routes than the more structured R&B. Is that you I've seen over on the Gibson forums? All the best, Shaun

Take it easy on that thing, It's like riding a wild bull! More power than you'll EVER need. More power than ANYONE will EVER need. I've got a copy of that bike with 3.4 miles on it. Good Luck

The shifter's not really a sore point, unless you throw the bike down on rocks repeatedly, then maybe a little but it's easy to work on. The frame should be a kind of dove gray, almost silver, if the bike is pre-'74. I guessing the serial number around the cutoff point would be around 28m3000, but that's just a guess. I'm probably within a couple hundred or so. When I converted my first 123 to 18/21 wheels, I compared the circumferences of the rear tires and lowered the gear ratio by the same percentage. It works like a charm. If memory serves correctly, I went from a 12 front to an 11 and a 54 rear to a 60 tooth sprocket.

Jon has it pretty close, the clutch cover has to come off, then you'll see the end of the shifter shaft. There is a "claw" that bends back toward the engine that fits between the two ears of a spring. I've found that even on a new spring, the ears are spread out too far and gave slack in the mechanism. I've had success bending the spring ears so they are closer to the claw with no slack. The claw sometimes breaks off too... When you have it out for spring bending, etc... check the shaft for straightness. I have to do the same thing right now on my 200.

Hey Swooshdave, when is the Hannegan event? I can't find it listed anywhere. Maybe you Bulto guys can use a bit of Montesa competition...

That looks amazing, Jay. I'm an engineering type, not an Engineer but a technologist and I build highrise towers, so I have an eye for what works structurally. That said, I don't think the front subframe is going to be highly stressed anyways, because that steel gusset welded between the steering head and the underside of the frame looks like it's going to do most of the job by itself. One question though. Where does the carb go? LOL

Yes the air forks were standard fitment to late 348s and 349s. The forks are meant to be aired up to about 8psi with a max of 12 psi. Any more and the fork leg may split. The engine is 348.

I agree that it's a 349 chassis with 348 parts. I suspect the engine is 348, at least the sidecovers are. The rear silencer is 348 but has been modified to mount on the 349 frame with the 2 bolts further apart on the 349.

Use ATF in the clutch.

Try this http://s268.photobucket.com/albums/jj31/jreilly_photos/

Unbetable???

It's 1.8mm before TDC

I can't find the post so I'll start it again. Someone was looking for a vintage Montesa shop manual for rebuilding an engine in a 247 Cota? This is a s close as I can find. It's the old Clymer manual on line. Thanks to Jared Bates of Southwest Montesa. http://www.southwestmontesa.com/montesa/frmst1.htm

From what I have found out, the bushings are available easily, but the bolt and spacer are not. Fortunately they are easily replicated by a machinist.

Spark plug is a B6ES (NGK) Good to hear the kickers work. That's the Achilles' heel of the 200. The gears are being reproduced but trouble with the heat treating is delaying them. Otherwise they are unavailable.

The clutch/gearbox uses 900cc of 10/30wt motor oil. I use Castrol GTX Do the kickstarters work on both bikes?

That's James Caan from the movie, "Freebie and the Bean" Another one of my afflictions are Corvairs, that's the old green car he runs over the rear fender of about halfway through.