I've got a club mate that has a TV200 on it's 4th over bore. He's holding out that he'll be able to find a decent piston for that 5th over. He's not going to spring for a kit and...... if he can't find a piston, he's going to look for a new Italian barrel. Yeah... good luck with that.. Being a realist, I don't think a new Italian barrel is going to turn up anytime soon.
So...
After reading various opinions on this board that the Indian barrels w/ the factory stage four tunes are actually decent quality, what are the best shops to buy one from with a good piston to match? Or, if bought separate, which make of piston is the top choice to use?
Thnx.
Best place to buy Indian 200cc barrels
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bristolmod
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Scooter Restorations- at least you know they are genuine SIL
http://www.scooterrestorations.com/lamb ... -head-sil/
Chris
http://www.scooterrestorations.com/lamb ... -head-sil/
Chris
Scootering since 1968.
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jonny snatchsniffer
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or use a decent 70mm piston without the cut skirt
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Supereibar
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Or.. relign the barrel. Its a TV200, a jewel, a piece of history, I would do it.
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Captain Chaos
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Is it still running a TV200 gearbox???
The GP barrel will have extended port durations compared to the TV item (assuming it's not been tickled), which may mean that the scooter suddenly won't pull 4th gear as favourably.....
The GP200 ended up with a 5.22:1 final drive ratio compared to the 4.44:1 of the TV200. A heck of a difference.
May be worth keeping in mind.
I'd go with keeping the original barrel and finding a suitable replacement piston...... or go to a quality 225 piston with decent rings???????
mmmmm nice.......
The GP barrel will have extended port durations compared to the TV item (assuming it's not been tickled), which may mean that the scooter suddenly won't pull 4th gear as favourably.....
The GP200 ended up with a 5.22:1 final drive ratio compared to the 4.44:1 of the TV200. A heck of a difference.
May be worth keeping in mind.
I'd go with keeping the original barrel and finding a suitable replacement piston...... or go to a quality 225 piston with decent rings???????
mmmmm nice.......
Last edited by Captain Chaos on Tue Jul 20, 2010 11:43 am, edited 1 time in total.
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bristolmod
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- Main scooter: Lambretta TV175 S3- what else!
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yep- thinking about it 225 sounds good on the existing barrel, and retains its "pedigree"
Chris
Chris
Scootering since 1968.
why go all the way to 70mm / you should be thinking of something like this(example only as to size)
http://www.lambrettaspares.com/sparepar ... 0l392.html
and remember the more you bore the more the port timings entry/exit angles change and if only just pulling 4th now might mean it may not in the future !
http://www.lambrettaspares.com/sparepar ... 0l392.html
and remember the more you bore the more the port timings entry/exit angles change and if only just pulling 4th now might mean it may not in the future !
We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm
SR list the sr200 piston in 67mm size.. which i guess is 5th oversize (at .2mm increments)..
http://www.scooterrestorations.com/lamb ... ly-67.0mm/
cheap and cheerful..
http://www.scooterrestorations.com/lamb ... ly-67.0mm/
cheap and cheerful..
Got to get it from Scooter Restorations and I think those SR pistons are great, you'll be surpriased with the quality.