My Montesa 349 Project

Need help finding information or parts for that old machine in your shed? Someone in here will know!

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Rod
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Re: My Montesa 349 Project

Postby Rod » Sat Nov 14, 2015 8:06 pm

Part # 5166.01302 does have a locating finger that your bike doesn't have. Other than that the picture and diagram look very similar, except that parts 5166.01201 and 5166.01302 are in reverse order.
Did they make such a significant change between 1980 and 1983? Is this possibly where your problem lays, have you got these two parts fitted in the wrong order, just a thought.
I have the 349/4 parts manual but it's exactly the same as the diagram you posted, you need to find a 1980 parts manual which I'm sorry I don't have.

PS:- I've never had a Montesa engine apart yet, but I will soon (349/4).



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Kombivan
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Re: My Montesa 349 Project

Postby Kombivan » Sun Nov 15, 2015 1:22 am

this change was 1979-1980 and i have the correct part as my casing in my 1980 doesn't have a hole for the post where as the 79 has the post. My problem is trying to work out how they made the different mechanism fit and work properly. Wether packing it out as I have done will effect the transfer of oils between gearbox and clutch will it wear the housing faster being packed with a 5mm spacer, if I ground some meat off the protuding bolt will the cogs line up all these little questions I'm currently thinking that I should just use it as is and see if it works ok. The biggest question is was it put together like this in the factory? the selector shaft (1980) has 1.75mm free play where as the 1979 has only a fraction of sideways movement.............hmmm that is an interesting thought. can they fit the wrong way around and still work?



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Kombivan
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Re: My Montesa 349 Project

Postby Kombivan » Sun Nov 15, 2015 1:52 am

Rod your a clever bastard, thank you :D ....Bugger it's gotta come appart again. :( :montesa ----No it doesn't come apart again and thank you Rod for getting me thinking hard about this and then being able to reason why there Is a difference between early and late cotas.

This also shows the difference between 1979 and 1980 model.

1979 correct method of fitment. :montesa
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1980 and later 349's correct method of fitment. :montesa Both these correct just different for the different models.
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Kombivan
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Re: My Montesa 349 Project

Postby Kombivan » Sun Nov 15, 2015 3:10 am

I think I have it set up correctly. In the manual there is a spacer behind the gear shaft this must be to compensate for the change in the position of the shift plate. :D I don't have to pull it apart again.

{A kind note from Southwest Montesa
Bill,
First off, in the states, we refer to the 1st model of the 349 as a 1980 model. (the fuel tank had the fuel level indicator) the 80' model used the same shift components
as the 79' Cota 348. This had the fixed post, screwed into the case for the return spring. Very late 1980 and 81' models used the 5166.01302 plate that had a tang
that took the place of the screwed in spring post. Only other change was the shift shaft. 1980 models used the 7366.118 shaft (this is the mx shift shaft) Later models
used the 5166.118 shaft. This later shaft had the spring post hole mounted in a different spot to take in account the different spring mounting on the plate tang.
Mixing the two shafts will put the 0266.014 spring in the incorrect location to work correctly.
Later shift assemblies also used a washer (5166.138) behind the 2166.03601 shift mounting to slightly space out the shifter. Also there was a bushing (5166.137)
that went between the plate with the tang and the case. Both pictures are correct. Later models with the spring tang on the plate were mounted on top of the selector plate.
(plate with the teeth) opposite of the 1980 model. Hope this helps.}

Cheers,Jared


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Kombivan
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Re: My Montesa 349 Project

Postby Kombivan » Sun Nov 15, 2015 4:10 am

Does anyone have a spare engine pipe for a white wonder lying around? 1981 - 1982 red 1983 - 1984.



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Kombivan
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Re: My Montesa 349 Project

Postby Kombivan » Sun Nov 15, 2015 2:14 pm

Has anyone got a photo of the wiring setup inside the headlight to assist me with my wiring diagram or any other piece of wiring on the 1980 montesa Cota 349.

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Re: My Montesa 349 Project

Postby Kombivan » Tue Dec 01, 2015 3:00 am

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Re: My Montesa 349 Project

Postby Kombivan » Tue Dec 08, 2015 12:14 pm

Just a note about chain length the chain I fitted was from a 247 cota with 10T to a 64T rear sprocket this was the exact length required for an 11T to a 44T on the late series one 349 Montesa Cota.

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Dating for the 247 owners.

Postby Kombivan » Thu Dec 31, 2015 3:37 am

EVOLUCIÓN DE LA COTA 247



MES/AÑO MODELO Nº.BASTID. ELEMENTOS MODIFICADOS



Jul. 1968 Versión cubos de 180, 21M 0 Primera Cota 247 producida en serie.
Mar. 1968 21M 500 Bastidor con "orejas"soporte guardabarros trasero
Nueva guía cadena ??.Nuevo escudo.
Tubo escape modificado
Tubo admisión boca con dos esparragos.
Caja filtro aire modificada (3 tornillos).

Nov. 1968 21M 1191 Guia cadena


Abril 1970 Versión cubos de 110. 21M 1800 Nuevos estribos con sierra
Nuevo tapón depósito con juntas tóricas ???
Sillin modificado
Cubos de rueda de 110 mm.
Rueda dentada de duraluminio
Oct. 1970 21M 2505 Bridas susp.delantera de Duraluminio

Mar. 1971 Versión cuadro gris 21M 3000 Fij. amortiguador tras. con anillos elásticos
Motor nuevo. Nuevo color de bastidor
Nuevos estribos forjados mas bajos.
Nuevo grifo gasolina
Nuevo diseño susp. delant.
Nuevo grupo culata-cilindro "redondo".
Escape salida redonda.
Nuevos volantes inercia y magnetico.
Nuevo filtro de aire con admisión superior.
Mar. 1971 21M 3125 Cubos de rueda pulidos
Mar. 1971 21M 3372 Nuevo piñón de puesta en marcha.
Jun. 1971 21M 3750 Puños diseño estriado
Nueva palanca freno trasero
Nueva camisa cilindro
Nuevo diseño carters.
Cambio mejorado.Piñon mando rueda modif.
Nuevo piñón puesta en marcha.
Nueva palanca de cambio "redonda".
Jul. 1971 21M 3789 Nuevo embolo
Jul. 1971 21M 3825 Amortiguadores "dorados" sin guardapolvo


Sep. 1971 21M 4382 Nuevo tensor cadena.
Nuevo protector cadena plastico.
Sep. 1971 21M 4456 Fijación culata mediante espárragos
Dic. 1971 21M 5288 Nueva palanca y muelle puesta en marcha.
Feb.1972 21M 5394 Piñon mando rueda desplazado.
Jul.1972 Versión depósito 21M 6600 Nuevo caballete articulado sobre horquilla trasera.
estilizado. Nuevo depósito estilizado
Posicionador manillar.Fuelles suspen. delantera.
Nuevo mando acelerador.
Nueva palanca freno trasero
Nueva fijaci,on escape y suplemento silenciador
Se incluye luz de "stop" y de ciudad.
Nuevo juego discos embrague "recortados".
Jul.1972 21M 6700 Suplemento silenciador dimensionado
Carburador mejorado.
Piñon mando rueda 10 dientes
Dic. 1972 Cambio a la izquierda 21M 8100 Cambio a la izquierda
Nuevo grifo gasolina
Nuevos amortiguadores
Nuevos embolo y segmentos
Modif. tapa filtro de aire.
Nueva palanca p.e.m. mas separada.
May. 1973 21M 9702 Cambia llanta trasera
Ago. 1973 21M 11001 Incorpora cierre dirección.
Mandos sobre manillar de Duraluminio.Incorpora avisdor acústico.
Sep. 1973 21M 11152 Incorporación de gomas antivibrantes en cilindro y culata.
Sep. 1973 21M 11240 Nueva cubierta trasera Pirelli.
Oct. 1973 21M 12115 Elemento filtrante "Twin-air".
Feb. 1974 Versión bastidor 21M 13107 Nuevo bastidor negro.Patín guia cadena mejorado.
negro. Nuevo grifo gasolina de goma.
Feb. 1974 21M 13291 Carburador con purga en la cuba.
Abr. 1974 Cota 247 T 21M 13830 Primera 247 Trail. Sillín biplaza.
Dic. 1974 21M 17218 Puños de caucho natural
Nuevo neumatico delantero.

Jun. 1975 Versión Ulf Karlson 21M 19228 Depósito Ulf Karlson
Se añaden protectores manetas y mando acelerador.
Nuevo diseño carters.Palanca embrague sobre carters.
Nueva pipa bujía.
Nueva palanca p.e.m. forjada.
Ago. 1975 Cota 247T 21M 19779 Versión Trail con base UK.
Jul. 1975 21M 19872 Nueva relacion transm. primaria.
Jul. 1975 21M 19979 Tensores cadena de Duraluminio

Sep. 1975 21M 20042 Paso cables electricos sobre guard.trasero

Feb. 1976 21M 21318 Tapetas fij. manillar de duraluminio.
Feb. 1976 21M 21381 Se añade protector goma en carburador.
May. 1976 Cota 247T 21M 21482 Nueva decoración adhesivos rojos.
Sep. 1976 21M 21962 Rodamiento dirección con jaula de Nylon.Manillar de dural.

Oct. 1976 21M 22062 Nuevo sillín.

Mar. 1977 21M 23035 Nuevo grifo gasolina.
Jul. 1977 21M 23635 Motor 237 c.c.(71x60)norma francesa.
Nuevo sist. filtro aire.Nueva susp. trasera Betor muelles paso
variable.Manguito entre bridas, tubos susp. sin cromo duro.
Nueva placa matrícula trasera.
Oct. 1978 21M 24389 Rueda dentada de acero.
Jun. 1978 Cota 247 C 21M 25137 Cilindrada 237 c.c. (Norma francesa).Nuevo depósito.
Nueva susp. delantera con presión aire.Guardab. plastico.
Jul. 1978 Cota 247 (biplaza) 21M 25307 Depósito gas. "tipo 348" biplaza.


14 Oct.1980 21M 27337 Ultima Cota 247 montada.



Rod
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Re: My Montesa 349 Project

Postby Rod » Thu Dec 31, 2015 5:53 pm

Thanks for that Kombivan, it's as clear as mud. :D




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