[Slide Gap On Amal Carb]

Yes..You still have to get air into the motor even at idle..

just had a look at the Amal on my 348.. theres easy 4 or 5mm

gap on the air cleaner side...

[1976 Montesa 348 Cota]

bottomed out ?.. Do you mean stuck down ?

just had the same prob with my 77 cota 348...

mine had a craked piston on the top of one of the damping rods

so I made 2 new ones in acetal.. thinking that was the issue

but after reassembleing they still stuck down....

I found in the end it was the plastic/nylon sleeves at the bottom

of the damping rods jamming in the stantion when fully compressed..

the fix was to machine the OD down till the fitted in the stantion

with out jaming in there.. wonder if the nyon sleeve has swalled up over time..

Another prob I found is the stantion would stick just slightly in the slider for the

last 3mm of travel..

[Montesa Clothing]

http://www.scb-retro.com/products/montesa-sweat-shirt

[348 Stuck Fork Leg]

Found the prob..

Alloy piston on the top of the damping

rod has cracked in two..was cleaning it

up and fell on the floor in two...

So I will turn up 2 new ones in Acetal "nylon"

theres no load on them spring pressure is

on the damping rod..

[Cota 348 Airbox]

Hi,

Ive got 2 349´s one is missing the airbox and I´ve fitted a universal foam thing.

If you want to get one a chap in Germany has reproduction ones www.montesa.de (there a bit expensive for liking).

what I'm going to do..

get a block of PVC foam , shape it to fit in the frame

air box shape then fiber glass it leaveing the top

open... the dig the form out leaving a fiber glass air box.

bit of filler , sanding , black paint & it will look like it

was ment to be there..

[348 Stuck Fork Leg]

could you clamp an old yoke to it and use that to hammer it out or try and turn it with wd40 in there

What I will try.. Is clamp the stanction in the lathe chuck to hold it , put the axle bolt though

the slider axle hole see if I can rotate it while pulling..

hammering it will be the last option..

Edit.... I got it... twist pull it came out .. couldn't see anything wrong..

now it slides like it never had a prob..damping rod pushed out easy..

I have no idea what the prob was... No dents or bends...

just struck another issue while pulling it apart..can't get the swing arm

pivit bolt out.. must be rusted in...Get the motor out and cut though the bolt

& bushs each side... then turn up some new bushs/internal sleeve & bolt...

[Front Brake]

reduce the surface area of the pads... cut some away..

cut them so the length is less.. retain the hight so you

don't ware groove on the disc...

[348 Stuck Fork Leg]

I mean rust inside the tubes where the piston contacts the tube

Ok..not looked to hard in there..

if the bottom bolt holding the

damping rods removed wouldn't

the stachon/damping rod/piston

all slide out as a unit if theres rust

stoping the piston moveing inside

the stanchon ?

[348 Stuck Fork Leg]

Pete is it rusty in there? I had problems with getting some 348 forks apart when there was rust blisters on the inside surface of the tube

from what tube is out of the slider theres is no visable rust other than very small

pits under where the plastic sleeves were between the triple clamps..

the other leg shows no sign of rust...

[348 Stuck Fork Leg]

just started the build on my 348 ,,

the right fork leg is stuck 3/4 of the

way though it's travel... " locked solid"

spring out bottom bolt out theres no

way this thing will move.. A bent main

is a possability but the top section looks

stright so if there is a bend it's down in the

botton slider...

Any other ideas what could be the prob if

its not a bent main tube & how to get it apart ?

[247 / 348 Clutch]

Thanks

[Striped Bolts On Crankcase!]

3 quick easy options...

first see if you can use a longer bolt... there may still be

good thread passed the striped thread...

assumeing its a 6mm thread.. you can retap the hole

for 1/4" bolt... 1/4" is .4mm bigger than 6mm..

use UNC 1/4" thread.. If the holes not to butchered

it will work... done it a few times over the years..

see if you can loc-tight small studs in.

Maybe combine options 2 & 3...

[247 / 348 Clutch]

Can anyone tell me if the 247 & 348 share the same clutch.

I know it's a long shot..but hopeing...

I'm after a 348 clutch drum . can't find one , but the 247 clutch

parts are everywhere..

[Suspention Set Up..]

Hello...

I have just bought a cota 348... first trials bike in 20 plus years..

How is the suspention on a trials bike set up ?

Sag height %.. unloaded & loaded "with rider weight"

The rear shocks are stuffed , So they will be replaced

I'm only going to use it in the clubmans class so am looking

at a set of Betor shocks , prise is not to over the top.. As

I live in NZ I have to take into account exchange rate & shiping cost..

when those are added on cheaps not cheap any more..

Thanks

Pete

[Cota 348 Airbox]

Hi..

just bought my first trials bike in over 20 years..

A 77 Cota 348 thats missing its airbox..

can anyone point me in the right direction to where

I may locate one..

Thanks

Pete..

[Hello From Nz]

Hey all...

Just bought my first trials bike in 20 plus years.

A old 77 Montesa Cota 348, I intend to have a

go at a few twinshock trials events.. I done a bit of trials

way back when on a KT250 , but was more interested

in MX & enduro back then . The bodys got a bit old ,

I don't bounce like I use to...& I'm to slow now anyway...

So getting back into trials is a better option now..

I also have a 09 XT660R Enduro side car unit (will do when

I finish building it) & 05 XR250..

The Montesa in ok condiction apart from it's missing

the air box..

Pull it apart clean and polish the alloy up. Try and make

it look like something..Get it ready for summer.. like i need

another project..LOL.....

Pete

By petenz at 2012-06-22

By petenz at 2012-06-22