Montesa

The rear brake pistons were sticking and we tore them down the other night to clean everything up and get everything working right again. Split the caliper and used compressed air to get the piston out. Problem is we used a little too much air pressure and turned the caliper into a small canon. It launched the piston into parts unknown. Finally gave up looking for it today. Question is, can I buy just a piston or a rebuild kit that has new pistons in it? Note to self: cover piston with rag before blowing it out next time!!!

Hello, Are there companies making a racing wire loom? I know future used to make a very minimalistic wire loom for 4rt's but they are no longer doing that ? What can be taken off the bike ? i have seen some monts where a lot of those rubber tubes and catch tank and other stuff have been taken off so you get some space to work on the engine . I have seen smaller HT coils and smaller condensors beeing used to

Hi As a newcomer to trials i think i need to replace the clutch on my bike as it wont engage. Is it an easy job and can i get a manual for this bike? Any help would be appreciated. Many thanks Dan

were can i buy 309 cota1986 middle and rear silencer any help welcome

Rebuilding clutch on 242 and wondering where the thicker stepped plate goes, guessing first or last? Thanks for any help

Hi guys, got a new mikuni on the 248, just wondering what settings everyone else uses like mixture screw and needle settings, as mines bogging down like too much oil and the plug is dripping with fuel. Cheers

My '97 315 stopped idling today so I pulled the carb and checked the pilot jets (PHBH). The little hidden jet under the main idle jet seemed blocked so I removed it and didn't bother putting it back to see how it went. I've got it running as well as before which I would rate as 6/10 (but this might be due to other causes). The things is the manual says the air screw should be out 1 turn while mine is 2.5 out. Should I be worried? The pilot jet is a 46 if it matters. I'm very rubbish with carbs/2 stroke so any help would be appreciated.

Just thought I’d show you my version of a chain guard for the Montesa 348. Didn’t like the idea of paying upwards of £50 ish for something that might get wiped out in a section. There is a chain tensioner courtesy of In Motion nestling next to the gearbox sprocket, the upper chain run is protected by black water pipe ( cheap to replace if it breaks) the lower chain run is protected by thin pond liner sheet, this deflects falling crap from the tyre. There is also a lower chain guide made from bullet proof nylon (well the guy who gave me the plastic said it was ballistic grade). Hope you like. Any exposed glue (Gorilla) has now been carefully removed...it was just a belt a…

So I've been told there are restrictors in the header pipe, airbox and in the mid-pipe. I've dealt with the header pipe, but since I got my Monty second hand, how do I determine if the other restrictors are still in there? Sad to say, I'm not even sure what the mid-pipe is. I'm guessing it is the convoluted aluminum structure between the header pipe and the silencer. Thought that was the expansion chamber??? Cheers.

Hi, does anyone know the standard carb jetting for a 349? Is a 3.5 slide correct? cheers

I have a 1980 montesa 349 that needs a new gear shift shaft and a kickstart spring. Anyone know of a parts supplier in the USA that might have these items?

Who has a referal for rebuilding a Showa rear shock in the Mid-south-west U.S.A. Phoenix, AZ. Must be GOOD. Thanks Jim

I have a 2005 4rt and was wondering if anyone has the bearing # for the head set bearings? or are they the same bearing used on newer 4RT ?

Hi! Have a 1976 Cota 348 just started jumping out of first gear. Never been apart. Comment and suggestions welcome. Next event for me is Barber Vintage Festival in October.

hi all im thinking about doind a paint job on the plastics on my 98 315 id like a deeper red mudguards with white tips i have a carbon tank so i dont kno if it would look ok? has anyone done such a job? max

Hi can anybody tell me the exact year of my bike? I think its 83 or 84 but not 100% Frame and engine 29M00627 Cheers Neil PS anyone got a workshop/parts manual ;-)

Folks. What is the cylindrical chamber I can see on some 247 pictures mounted on top of the rear engine mount? Thanks

Can someone please explain or upload a photo of the return spring on the rear brake of the early 70's Cota 247? I can't understand how the spring attach to the brake arm from the parts manual. Thanks.

Has anyone made a little bracket to extend the frame so it can act as a seat if so can you make me one-please i can send you cash/bank trasfer/cheque also while sitting down i dont seem to have much room i need to move the brake lever down how do i do this? it must be simple but i cant work out how! that bottom nut does not seem to do much

Hello all could anybody tell me what psi i should get on a compression test on my montesa 348, i have done a leak down test and that held 8psi for 10 mins no problem. thanks in advance.