WORB-5 head

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Norrie Bodge
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Main scooter: GP-1971-Ts230/S2-1960-Ts230
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Hi
Has anyone used or is using a WORB-5 cylinder head with their mallossi 210kits ???
I'm thinking of buying but @ £80+? Wanted some feedbk 1st
& what advantages/increases in performance did you get from adding it?

Cheers

NB
Dryballs
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Location: Stockwell, London
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Go for a sip head. I've got one and its choice.
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rapido230
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Main scooter: vespa 210 & lambretta gp
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been using a MMW head, without o-ring, been absolutely spot on, dont kno about worb 5 (got a crank he done though), as far as me head is concerned, i get no pinking like i did with previous head, a good seal too
Norrie Bodge
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Posts: 450
Joined: Thu Oct 25, 2012 2:49 am
Main scooter: GP-1971-Ts230/S2-1960-Ts230
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Dryballs wrote:Go for a sip head. I've got one and its choice.
What setup you ave on This m8??
Carb/crank/exhaust & what does it perform likes??
Cheers
Norrie Bodge
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Posts: 450
Joined: Thu Oct 25, 2012 2:49 am
Main scooter: GP-1971-Ts230/S2-1960-Ts230
Contact:

rapido230 wrote:been using a MMW head, without o-ring, been absolutely spot on, dont kno about worb 5 (got a crank he done though), as far as me head is concerned, i get no pinking like i did with previous head, a good seal too
Who supplies these heads m8? & how much?
& What setup you running?
Carb/crank/exhaust & what does it perform likes??
Cheers

NB
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rapido230
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Main scooter: vespa 210 & lambretta gp
Location: norwich
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got mine via SIP, im running a MB tuned barrel with rd reed valve, 30mm delly, scorpion pipe, its extremely usable at all speeds , 1 or 2 up, 22hp, and been bullet proof last dozen yrs. but undergoing changes this yr, upgrading to 60mm crank etc
Yanker
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What about Malossi's own centre squish, 'o' ring sealed head? Their info covers compression ratio, squish velocity and geometry.
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ssteam177
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Main scooter: vba malossi 221, api series2
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With the malossi head I personally found the compression ratio too high at 12:1 so I switched to the mmw but if I was building one now I'd use the sip head
IT'S NOT WHAT YOU BUY
IT'S WHAT YOU BUILD!!!!
Yanker
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ssteam177 wrote:With the malossi head I personally found the compression ratio too high at 12:1 so I switched to the mmw but if I was building one now I'd use the sip head

Interesting: Is your's standard stroke? (12:1 is too high for me too!)
Norrie Bodge
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Joined: Thu Oct 25, 2012 2:49 am
Main scooter: GP-1971-Ts230/S2-1960-Ts230
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Thanks for replies lads
My current setup is 60mm crank/skimmed-std head/Scirpion Exhaust & Std 24mm carb wi128main jet.
Iv just rebuilt after getting launched by a lady driver in sept ??
So ringing a few changes aswell, the PM just been added & also 4th gear cog.
It did run ok with scorpion but lacked topend??
also have a old MSC-Micron with new end can to try.???

Thinks I may go for the MMW ?
Or does anyone kno a Uk dealer do similar heads to these wher I could send a std one to them to get skimmed/profiled etc??

Cheers

NB
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