i need to replace my conrod (fs 650) '04 after 300h !!!!but i want to replace my older crank with the bell crank because it's much stronger i think. i've heard the conrod isn't as strong as the old one and it last for 150h maximum! i don't use c/b and my motor revs 11.000rpm...what is your opinion? should i keep the same crank and replase the conrod or to use a bell crank?your help please!!!!
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hi, no way your motor is reaching 11.000 rpm .
if it did you would propably be a sponsored world championship supermoto rider, your bike would have about 80hp , you wouldnt own it, no way it would have reached 300h and you wouldnt worry about a freaking rod because someone else would pay for it!
if it did you would propably be a sponsored world championship supermoto rider, your bike would have about 80hp , you wouldnt own it, no way it would have reached 300h and you wouldnt worry about a freaking rod because someone else would pay for it!
Just with a faster cam and a Woessner or Wiseco piston (so it won't break down in a minute) it will. I admit i haven't seen it myself, but if my old engine could run 10500 without modifications, why shouldn't a 650 with some small adaptations can't do it. The thing you need most of all is a good carburattor and a good adjustment of it.
There may be small inaccuracies here but the basic gist is right. There are some basic differences here. Ffor a start the conrods are different. 300 are longer which is 140mm, With corresponding piston differences. 533 flywheels are also 1mm thinner where the the pin goes through and the hole is larger.
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mrksem454 said:
300 and 533... are these partial numbers from the old part# system ? or ... some more specific info be nice
i'm just wondering the longevity of these composite rods compared to the std rod.
i know if i go that way next time,i will have put a heavier spring in the relief valve to force more oil to the bigend, but if everything is done as it should be done, how does it last? anyone?
..weed..
i know if i go that way next time,i will have put a heavier spring in the relief valve to force more oil to the bigend, but if everything is done as it should be done, how does it last? anyone?
..weed..
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