running a new piston and barrel

[marktheskin]

hi just bought a sil lambretta gp150, its had a new piston and barrel on it and i was just wodnering how long i need to run it on for and what mix i should be doing for 2stroke to petrol.
any help would be great
cheers.

[bristolmod]

approx 500 miles at 4%.

Don't be too gentle whilst running in- a little bit of caning now and again is OK- lots of short fairly fast journeys will pay dividends

Chris

[soosh]

approx 500 miles at 4%.

Don't be too gentle whilst running in- a little bit of caning now and again is OK- lots of short fairly fast journeys will pay dividends

Chris

Couldnt agree more. None of this 1000mls at 40/50mph bollox.I ran mine just round country lanes giving it a few beans in each gear.

[poose]

Always run mine in on mineral oil for first 500 miles at 4% mix, helps bed them in and coke up any leaks.

[cgt75b]

I would'nt advise caning ! 45 mph max for at least 300 miles imho

[mark]

it also depends on bore to piston clearance as well

[Muttley McLadd]

it also depends on bore to piston clearance as well

Clearances, if it's a Rapido.

[mark]

true lol

[Doom Patrol]

I don't think 500 miles is enough personally. I agree you shouldn't be afraid to go up and down the gears and give it a go here and there, but don't push it to quick too soon. You'll know when the engine is right.

[Supereibar]

I don't think 500 miles is enough personally. I agree you shouldn't be afraid to go up and down the gears and give it a go here and there, but don't push it to quick too soon. You'll know when the engine is right.

I am there with you Nev. I would run it say 800 miles on variable speeds making sure the scooter runs in all of its gears on equal efforts, never pushing it, with the exception of revving it downhill with the hand in the clutch. Clearances also will help a lot.

J