stainless valves

hi all,, new to minitwins,,not new to racing,, can anyone tell me if one piece stainless valves are avail for my yr2000 curvy,,,,if so,,whare and how mutch,,,,,thanks,,,,rob

http://www.zlockracing.com/new_products.html

yes you can, also, try using the space bar...

[andrewsmith]

you racing minitwins or thundersport/ sprint?

as that is not permitted in Minitwins

http://www.minitwins.co.uk/rules/rules2010a.html

a. Any four-stroke twin cylinder motorcycle originally sold for road use with a water cooled engine of up to 650cc, or an air cooled engine of up to 820cc, may be used provided it adheres to the 72 SAE hp power limit for the series.

b. Older models may be updated with genuine parts found on a newer version of the same model and newer models may use parts from older machines as required. All parts must be used as intended for the homologated machine and in accordance with the manufacturer’s recommendations.

c. All machines must comply with the machine preparation regulations as set out in the 2010 ACU handbook for road race meetings.

d. In order to control costs, machine damage may be repaired in a manner agreed with the series Eligibility Officer and the Chief Technical Steward of the club. No advantage may be gained from such modifications.

e. All machines must function on normal unleaded fuel available from public service stations with a maximum 102 octane in adherence with ACU standards. E85 Bio-Fuel from public outlets is permitted.

ah yes point taken, my intention is to race in the uk minitwin class, ie bemsee, are they reliable in the valve department,??

Originally Posted by Cymraeg_Atodeg

http://www.zlockracing.com/new_products.html

yes you can, also, try using the space bar...

thanks for that, il use the space bar if you lose those shades....

Originally Posted by andrewsmith

you racing minitwins or thundersport/ sprint?

as that is not permitted in Minitwins

not even allowed to alter the cam timing....... Glad I read this thread as I was going to advance the cam timing in the winter shutdown to look for more midrange - hadn't realised it was a no no.

Engine

Cylinder head, camshafts, cam sprockets, crankshaft, rods, pistons, valves, cylinders and all other engine components must be as homologated. No internal engine, gearbox and clutch parts may be altered or replaced with the exception of the gear shift detent spring, the clutch friction and drive plates and the clutch springs.

Polishing and lightening of engine parts is not permitted. Balancing or gas flow modifications normally associated with individual tuning are not permitted.

Compression ratio of the engine must remain as homologated.

Camshaft timing must remain as homologated.

No other engine tuning or alteration from the homologated standard is permitted.

[andrewsmith]

Cheers mate for the full tech spec

See @ EF in a few weeks

the standard motor thing is what attracted me to the minitwin class in the first place,,,bit like my present class thundrsport 500....rob

[yorkie_chris]

Originally Posted by rvracing

ah yes point taken, my intention is to race in the uk minitwin class, ie bemsee, are they reliable in the valve department,??

yeah the stock motor is strong enough to stand a c**t like me riding it for 70k+... the valves are fine.

Not a lot you need to do for minitwins reliability wise, just make sure motor is healthy.

Pardon my ignorance but what advantage does stainless have in valves?

C