paulc76

The crank has a inner bearing race on it you will get a new one when you buy a new bearing so that will not be an issue they can be tricky to get off though and i'm not sure if a standard 241 had that type of bearing from the factory maybe been added by a previous owner, as for the seal face it can be sleeved fairly easily where are you located?

Is the 307 a motoplat ignition? if so try https://uk-motoplat.com/testing/

The easiest and cheapest way is to put a pit of fuel pipe over the throttle cable on the carb end

I Have sent you a PM

Pretty sure they are cycle thread

Paul Dawkins at https://www.motorbikeregistrations.co.uk/ will help you out

Also most of the info you find online is for the more common type of motoplat where the switching electronics are within the coil yours is not this type so the info does not apply

Ok I'm sparking again now stator was bad but had a spare the readings are as follows coil primary 1.5 ohms coil secondary 18.2 Kohms Blue wire to blue wire 281 ohms Black to grey 25.2 ohms grey to ground 107 ohms black to ground 82 ohms blue wire to earth several Mohms so no connection really yellow wire is lighting yellow/green from ignition unit to earth white from ignition unit to kill switch other side of kill switch to ground hope this helps Paul

I am just about to look at one with no spark and i have a running one to compare so will let you know the reading the ignition you have is the type with the separate ignition unit usually hiding between the headstock gussets the coil should be a single wire type 1.5ohm connected to the green wire the white wire should go to the kill switch you should also see a voltage between the two blue wires when you kick it over the black and grey are the trigger wires i'll let you know the resistance once I've measured mine

No worries there are a few of us from the wirral that ride regularly with aqueduct just keep an eye on there website for dates

Come along to the Aqueduct classics trial next weekend you will be able to speak to owners of both not far from you

No Worries I have attached a parts list if you need it Montesa_Cota_348_1978_Parts_list.pdf

Thats normal the conrod thrust is taken up on the small end

What was the conrod you managed to match up?

That means it was manufactured week 24 2017

Thats a bultaco TSS

yes just a dating certificate and a nova needed a friend did one last week no need to mot

my carb is set up as follows dellorto phbl25 Slide 40 Pilot 33 Main 92 Needle 036 second clip down from top Hope this helps mine runs perfectly My Ignition timing by the way is set at 1.8mm btdc

Might be reeds but they normally cause low speed running problems is the ignition all ok advancing as it should ? what jets are in your carb? I will be pulling the carb off mine tommorrow night I will have a look at whats in it

Is the exhaust clear particularly the center box they have to be cut open and re welded to clear them out so most probably never been done from new

Hi Yes that is normal you can find a diagram on the gas gas website its in the parts book for the 1991 327 aire model any problems pm me and ill dig it out for you Cheers Paul

If you go on the Gas Gas website and download the manual for the 1991 aircooled 327 there is a diagram on there or if you pm me your email i'll send you a copy the forks are identical to the Beta

pretty sure beta recommended 70-1 i run mine with 15ml oil per litre or 66-1 with no problems at all

if its two stroke use castrol A747

Try billetparts.co.uk i got one off them a few years back