andrewb

Thanks for the info. 👍

Thanks for the quick reply Majesty! I have a list of parts for the company you mentioned, so I'll give them a try. Thanks again

Hi, It's been a while since I last posted. I am finally getting round to rebuilding my Cota 349 1979/80 (an early one). It's only been stripped and in boxes and drawers for the last 12 years, so I'm moving quickly on this one🤪. Can anyone let me know the correct piston ring gap for the standard bore please? The bore is good, not oval, and has hardly any wear, so I am just putting new rings in. I have the new rings but wanted to check the gap before assembling. If I remember I'll post some photos along the way. I've already rebuilt and re-spoked the wheels, frame powder coated, new shocks and forks rebuilt and fitted. Going to have to do the forks again though as I've realised the previous owner missed a couple of parts out. So I'll be ordering new internals. Here's a quick peek at the story so far (if you're interested). Thanks!

Hi, there is a well known Spanish company (Vallmoto) who supply replacements at €57 - 58. I think I saw a complete wiring loom on their site with the switch.

Hi Have you looked at vallmoto in Valencia, Spain. Excellent stock and most parts available.

Hi ndrtrials, The only numbers I have are the engine and frame numbers (51M 18186) no other info available I'm afraid. I really didn't want a Q plate if at all possible so if the bike already has a number assigned then great, but if not I may go down the £95 route as suggested by Woody, Any info you may be able to supply would be very welcome. Thanks all Andrew

Thanks Woody, All good info there. I've got to agree the £95 option does sound tempting. Andrew

Hi, Need a little advice if possible. I have a 349 Cota which I've had for a few years now and have decided that this year I'll get the bike finished. It's still in bits but I've contacted Sandifords for an age related certificate which they cannot issue now due to not being authorised by HMRC. Can the bike be registered without this document? I don't know if the bike was ever registered as there were no documents supplied with the bike when I bought it. I'm pretty sure it's a Mark 1 349 from the engine and chassis numbers, probably late 1979 early 1980. The numbers are: 51M 18186. I would prefer an age related registration number rather than a Q plate if possible. Thanks in advance. Andrew

I thought the early 349s didn't have the chain tensioner fitted as standard. Is it an easy MOD?

Sounds a cracking buy. I bought mine for the fun of the rebuild (how wrong you can be) and to ride some twin shock trials. maybe go to work on it if the suns shining. Its currently in boxes waiting for me to get round to building it. Not without problems though (see the thread on footpegs). All the best Andrew

Keep posting your progress on the DVLA side as I intended to register mine for the 1st time after completing it. I've heard that it can be tricky now with the local licensing offices closing down. May be different in Scotland though. Andrew

Sandifords used to offer an age certificate service for UK supplied Montesa. Not sure if they still do but its got to be worth a try. Andrew

Hi, a word of warning if wanting to lower the pegs on early 349's. The rear brake pedal is 'outboard' and will foul on the bottom of the footrest bracket. Being a chump I've done this and now face the dilema of taking the brackets off and replacing in a different position or file (neatly) a small 'V' in the brake pedal to get the correct pedal height, which may weaken the pedal. At least I checked before having the frame powder coated. Andrew

I must have been a very lucky 14 year old. I hadn't been told that one!

Split the cases a few times on my 123 in the 70's but don't remember having to remove one half and leave the other stationary. If you do split the cases though I would recommend replacing all of the circlips on the gear shafts as I had a similar problem. These gearboxes (I was told at the time) were notoriously brittle, however once I changed the circlips no more selection problems or trouble at all.

I don't think the translation would be that important. It is basically a full owner manual with a parts book etc. I've been able to get the info that I wanted and I can't speak Spanish at all! Rather than putting your email address up for all to see, if you send me a personal message (an option on the drop down menu by your user name) I will forward the file to you. Or as I said in my previous post you could visit todotrial.com and downlod the manual in PDF format. Andrew

Kombivan, I have had the same problems finding information. If you PM me I can send you a PDF of a manual with all the torque settings, oils and quantities and factory specs for the bike. Or you could visit todotrial.com and download the manual. It is actually for the 349/4 but from what I can see most parts are common. Oh, its in Spanish, but the important stuff is in English too. Andrew

Bore = 83.4mm (standard) Stroke = 64mm Not sure on the gudgeon pin but I'm sure someone will be along shortly to let you know. Andrew

Lovely. Can't think of anything else to add.

Hi Vexed, I wouldn't worry too much about the work, these gearboxes and selectors are quite simple compared to the 349 types. The gearbox on the 200 is much the same as the 123 and hadn't changed for some time. If you can get hold of a Clymer (I think) workshop manual for Montesas upto 1975/6 this should help you. There always seem to be a few on that there popular auction site. If you have the clutch cover off already check the selector return spring (on the end of the gear selector shaft) and the spring and bearing that locates in the selector drum. This is usually a hollowed bolt on the topside of the RH centre crank case. If you remove the bolt carefully there should be a spring and ball bearing inside. Mind it doesn't ping across the workshop. Best of luck Andrew

Weren't Honda doing some developments with composite cylinder liners, ceramic piston rings? I seem to remember them trying oval pistons as well to reduce the width of the old V4 GP racing engines back in the late 80's or early 90's. It's this sort of stuff that gets the old grey matter working overtime (read that as dreaming)

Ok. Thanks for looking.

That's great, thank you. No major rush as I haven't got to the stage in the rebuild of putting the wheels back on. That's going to be a while yet.

Hi, Can anyone help me with the dimensions for a Mk1 349 rear brake torque arm please? I'm sure this was covered some time ago and after trawling through I can't seem to find it. I think I will have to make one so overall length, width and thickness and the hole dimensions with distance between the holes would be great. Failing that if anyone has a spare that they want rid of then let me know.

HI Will, This company seems to have an extensive range of services www.central-wheel.co.uk. Have looked at them myself for my Montesa when I get to the wheels. If you decide to strip the wheels yourself and have them re-anodised don't forget to measure the offsets. I nearly made this mistake some years ago. Best of luck with the project. Andrew