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- Tue Nov 17, 2020 12:08 am
- Forum: Engine Tech
- Topic: Theory of 4 valve poly quad cylinder heads.
- Replies: 100
- Views: 1776197
Re: Theory of 4 valve poly quad cylinder heads.
I have been asked to develop a race cylinder head for a 450 cc Yamaha single motocross bike. The bike will be used for beach racing over a 500 and 750 metre course over 4 laps around barrels st either end of the beach. The rider is competitive in motocross and enduros.The class is very competitive ...