Originally posted by jski
. They sugessted to file the side of the cylinder down to make the vavle fit ...What do you think about this...
Originally posted by EricGorr
They should change the name from V-Force to FITZALL. Ok this may be a shock to some of you guys but the design of a reed valve is actually quite complicated and requires either computer simulation of cubic dyno testing time. V-Force makes a few basic valve sizes and then its up to you to modify your cylinder and intake manifold to make it work. I can't tell you how many kids with 125s that have sent their seized cylinders to me for repair after they haphazardly modified their intake manifolds with a hacksaw. I always ask them "did you recently install a V-Force? ". Most Japanese intake manifolds incorporate a molded o-ring for sealing purposes in order to replace a gasket which is subject to failure by leakage. When a hacksaw is used to cut off the molded inserts like V-Force recommends in their instructions, its easy to slip and damage the o-ring. Then the manifold leaks and the engine seizes. Another problem is that most people don't match the manifold to the reed cage because they have a die grinder to properly match the parts. This can cause a loss of power from the gross mismatch.
The bottom line is that V-Force reed valves don't work on everthing and there is a lot of customization involved in making them working like they're intended.
My advice is if you don't have the skills or patience buy a RAD Valve instead.
Don't count on it! I was in contact with one of their guys via email about my reeds fraying VERY quickly; he was helpful at the start then said he was passing it on to the tech people. I never got another email from him and nobody else there would reply to my emails. What ever happened to customer service!?I'm sure Moto- Tassinari would be willing to help you out in whatever way they can
My advice is if you don't have the skills or patience buy a RAD Valve instead.
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