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99 crank in an 03 engine

Posted: Tue Aug 30, 2016 9:00 pm
by rtboone
Greetings

Can anyone tell me what parts I will need to convert a 99 crank for use in an 03 engine? Is there any machining involved, and what model piston will work with this modification?

Also- Would the full circle crank have any affect on the power delivery compared to the stock crank?

Thanks

Tom

Re: 99 crank in an 03 engine

Posted: Wed Aug 31, 2016 2:35 am
by admin
Tom just a Road Toad crank with a 125 (942510) rod kit.
Harry felt that the full circle crank was a better fit for the bike than the "T" crank. I believed he called it a "T" crank or maybe it was called a "porkchop" crank ?
Photo is of what I think was the evolution of the (03) cranks. Crank on the left is one out of an (03) Wombat. The middle crank and the one on the right have rods that are cast with 022710. The (02) was a Road Toad but these use a 125cc upper rod bearing.
Ed is going to ask about these cranks so to save him from typing these came from Roger Phillips many years ago.:-)

Full circle crank would take up more volumn inside the crankcase. I would think this would be better but leave it to everyone else to decide.