Page 1 of 2
WORB-5 head
Posted: Mon Feb 11, 2013 7:05 am
by Norrie Bodge
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 7:25 am
by Dryballs
Go for a sip head. I've got one and its choice.
Re: WORB-5 head
Posted: Mon Feb 11, 2013 9:03 am
by rapido230
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 10:27 am
by Norrie Bodge
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 10:30 am
by Norrie Bodge
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 11:13 am
by rapido230
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 7:55 pm
by Yanker
What about Malossi's own centre squish, 'o' ring sealed head? Their info covers compression ratio, squish velocity and geometry.
Re: WORB-5 head
Posted: Mon Feb 11, 2013 8:14 pm
by ssteam177
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
Re: WORB-5 head
Posted: Mon Feb 11, 2013 8:16 pm
by Yanker
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!)
Re: WORB-5 head
Posted: Tue Feb 12, 2013 7:21 pm
by Norrie Bodge
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