Lis 125 starting issues

[Kristof Lammy pie]

Very nice Johnny.

We have a bit in common, I've always had motorbikes vfr400's mostly but I've had a all sorts Ducati's Yamahas etc.

But having kids they made me realise they were too damn fast for me.

So I sold up and bought a few lambrettas. My Dad was a Mod so it was always on the back burner to get one.

[johnnyXS]

you're right about the speed thing. The 650cc scares the pant off me but its very exilarating and surprisingly powerful too.
I just plod around the local country lanes rarely getting up to 50mph . I used to speed everywhere when I was young and stupid but when you get older things take a lot longer to heal and you hopefully gain some wisdom .
I just enjoy cruising now

[Kristof Lammy pie]

So all my parts have finally come

New 53mm piston and rings
Top end Gasket set
And a Scootopia Ancillotti exhaust

I'm still scraping gasket off the mating surfaces at the moment to avoid leaks.

Bloody awful job, when you haven't got a motorbike lift.

[johnnyXS]

excellent ! now you can at least get one bike sorted hopefully.
i'm probably teaching my Grandma how to suck eggs but don't forget to measure your squish after you've torqued the head....it can be very tight on lammys .Apparently a length of solder is ideal for that.

Looking forward to hearing of your progress .A couple of pics would be great

[Warkton Tornado No.1]

Bloody awful job, when you haven't got a motorbike lift.

If you are wary of any fluids (fuel & battery acid) & take appropriate action (drain tank/carb/remove battery) you can always lay the thing down onto some bedding! Seriously, old cushions, pillows, old mattresses…..anything that will prevent damage to one side or another will allow you to see what you’re doing.

[Kristof Lammy pie]

So I've got all the bits for the rebuild, and I've cleaned the gasket residue off, I'm just waiting for a 'glaze buster' for the barrel and I can rebuild the motor.

Will have a look at the sticky manual to check the squish.


I've got this weekend off so I'm hoping that I will complete it all.

On the subject of running it in, fuel mix etc

Any pointers?

Ta
Kris

[Storkfoot]

Before you get to running in, do you know the risks of using a glaze buster incorrectly and do you know what piston to barrel tolerance you have?

[Kristof Lammy pie]

I've never used one, but will take any advice given.

Haven't checked piston to barrel tolerance

[Storkfoot]

I don't mean this to sound off in anyway but may I suggest that you do some of your own research on these subjects - it can be dangerous to assume that all the advice you get on scooter forums is sound. The piston to bore tolerance on an iron barrel 2 stroke is important.

For what it's worth, I know someone who used one of those three pronged glazebuster tools in a hand held drill. Suffice to say, they then needed a rebore.

[johnnyXS]

hows it going kris ?
have you had any time to work on the scoots last week ?
Us armchair wrench jockeys need out weekly fix
All I've managed to do is take my clubman back to bare metal witha flapwheel . Awesome bit of kit!

[Kristof Lammy pie]

I don't mean this to sound off in anyway but may I suggest that you do some of your own research on these subjects - it can be dangerous to assume that all the advice you get on scooter forums is sound. The piston to bore tolerance on an iron barrel 2 stroke is important.

For what it's worth, I know someone who used one of those three pronged glazebuster tools in a hand held drill. Suffice to say, they then needed a rebore.

No problem at all.

I'm not going to rush into anything. I will do it properly.

Kris

[Kristof Lammy pie]

hows it going Chris ?
have you had any time to work on the scoots last week ?
Us armchair wrench jockeys need out weekly fix
All I've managed to do is take my clubman back to bare metal witha flapwheel . Awesome bit of kit!

Done nothing mate, had Manflu all week and going into the garage was the last thing on my mind. I've got the weekend off so I'm hoping I can get it all back together and get it started.

[coaster]

...........I know someone who used one of those three pronged glazebuster tools in a hand held drill. Suffice to say, they then needed a rebore.

I thought that type of honing/glaze busting tool was not for use in barrels with ports in, just 4 strokes.

[Warkton Tornado No.1]

I thought that type of honing/glaze busting tool was not for use in barrels with ports in, just 4 strokes.

Honing Attachment.JPG

Honing is fine if you have the correct tools & attitude.

The longer legged honing sticks you can get, the better, & obviously plenty of lube/coolant. The ports will be alright as long as the sticks are not so short that they be allowed to spring into them.

The type depicted is a Sykes Pickavant though you types that like a bit of 'bling', such as eight stud wheel rims & hubs, could spend a lot more on a Snap-on.

[johnnyXS]

The type depicted is a Sykes Pickavant though you types that like a bit of 'bling', such as eight stud wheel rims & hubs, could spend a lot more on a Snap-on.

or for the thrifty ........... use a bit of wet n dry

if all you wish to do is remove the glaze on the cylinder wall to improve ring seal and prevent scuffing of rings and bore, then 80-120 grade wet or dry will suffice provided its done in a manner to achieve a reasonable cross hatching finish .
Honing is where you take the bore out to its final size for a perfect piston fit, after a cylinder rebore.

[Kristof Lammy pie]

I will see how I get on, the bore has some glazing but to be honest I'm not too worried. As the motor is being removed in few months anyway, I just want it up and running to get it registered

I've now got a spare lis125 motor that I can take apart rebuild and upgrade to a 186 or 200.

[coaster]

I thought that type of honing/glaze busting tool was not for use in barrels with ports in, just 4 strokes.

Honing Attachment.JPG

Honing is fine if you have the correct tools & attitude.

The longer legged honing sticks you can get, the better, & obviously plenty of lube/coolant. The ports will be alright as long as the sticks are not so short that they be allowed to spring into them.

The type depicted is a Sykes Pickavant though you types that like a bit of 'bling', such as eight stud wheel rims & hubs, could spend a lot more on a Snap-on.

Actually that doesn't look too bad WT, the one I had in mind had a load of balls on the end of springs

[johnnyXS]

I will see how I get on, the bore has some glazing but to be honest I'm not too worried. As the motor is being removed in few months anyway, I just want it up and running to get it registered

I've now got a spare lis125 motor that I can take apart rebuild and upgrade to a 186 or 200.

sorry Kris I was answering some of the references to honing and the honing tools.
i'm with you matey .... just bang the thing back in there and run it . it will be fine .

I bought one of those cheap Indian small block 200cc engine kits a couple of years ago , it was too cheap to ignore. Its a steel lined aluminium cyclinder jobby .I'm going to bung it on my spare series 2 Li150 crankcase.
I like the idea of a lazy understressed 200cc which I can cruise on at 55-60mph if I should need to rather than a tuned screamer so i'm always looking out for a TV175 engine

[Kristof Lammy pie]

She's all back together, new piston and rings, gaskets, plug and new Scootopia Ancillotti exhaust and it runs great.


A bit of smoke on start up but I'm guessing that's the grease etc when I built it up.

I just need to go through it now for and prep it for the mot.

[Warkton Tornado No.1]

Lovely bike! That colour is so 'Corgi/Dinky two-wheelerish' but no worse for it!

Toy manufacturers must plant a subliminal message in the minds of the young, methinks.

Sorry. I need to get out, having had a break following Prestatyn.....

BTW the image of a Clubman (car) reminds me of a friend that fitted a blueprinted head, twin webers, LCB exhaust but couldn't bleed the air from the brakes! Sold it as was in the end!