http://www.stahlheaders.com/Lit_Rod%20Length.htm
this is all to do with conrod length and the effects it has on torque...bearing in mind that lots of folk go for 110/116 rods when building big cc stump pullers...
interesting info for anyone wishing to build a torquey motor
- sean brady scooters
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- jason frost
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Thanks more to read
some good bits here too http://bigscale-tourwagens.be/tuning.php will it never end, thinking of going back to standard. Like feck I am 


thats an easy and interesting read. narrowing the transfers for torque is something ive not heared of before, its on a barrel with big ports rather than a commuter bike engine like ours but interesting to get a snapshot of the pros and cons without being bored shitless with reems of theory.jason frost wrote:Thanks more to readsome good bits here too http://bigscale-tourwagens.be/tuning.php will it never end, thinking of going back to standard. Like feck I am
its one thing getting to understand these things but it would be interesting to see some of it put into practice and see the before and after results.