Scooterotica

Y not just drill out the Av 264 to suit ?

Convert to Tv 175 if you can, most reliable set up you will ever have and it pulls 4.8 gearing better than sx200. Those cheap Ali cylinders are just trouble tbh, I've seen a m8 with Stg 4 AD kit that just keeps eating pistons and heating up on exh side recently. Altho i dont think the exh port shape...

Glad u spoke to Ron, always been spot on with any issues with his parts snd
I'm still having fun with the Avanti at 30 hp 3 yrs on

It depends on how you approach fitting your cylinder tbh, if it's a quick bolt together then it would be 58 x 107, if you're planning to get best out of kit then maybe 60 x 110. There's plenty of info on here to give you a clue to a fast reliable lambretta

Can't beat a genuine TV175 set up, pulls the SX box better than a 200 all day long. I still rate the GT 200 as best all round kit out of box

They seem ok, I prefer under 3 thou but also check where the bearings run which needs to be as close to 0.

Not far wrong with blow back from lack off seal on inlet side diagnosis, You can check insitu with dial gauge but make sure it's solidy mounted. I would take crank out nd check tbh as you will find tiny specs of nikasil all over internals of engine especially seals.

Can't fault GT kits at all, Ignition systems i can! Recently built a 186 for Lambretta lad with Fran race 30 mm hitting 20 hp 16tq just bolted on, it also topped out at 65 mph and will sit there all day long. It has a little more power to release and Will be tweaked in due course . Also have my own ...

Heading to Dutch lions rally, I've dropped the front sprocket to 15 with SX200 box with pipe nd it flies, pulls in top from 30 mph topping out at 75 mph with GT 200 kit bolted on

oh and it sips fuel approx 50% less than avanti which will get same pipe on soon

same issues with grounding out with cast stub fitted, like most things they need a fettle to suit

Search found 156 matches

Re: Ron Moss - Avanti TT3 - Cylinder Kit - Review & Test....

Re: Small block upgrade

Re: Avanti woes

Re: 58 or 60mm crank?

Re: Which Kit??

Re: Acceptable crank runout

Re: Avanti woes

Re: Gt186 carb and exhaust

Re: TSR Evo pipe

Re: TSR Evo pipe

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