Need my engine made that little bit faster !

[Chris]

I would have thought that novarossi/rb/nitrotec and o'donnell plugs will all work fine. Also rb often tell you to change the conrod after every gallon. I would just say after the first gallon or 2 take it apart and see if there is any play, if there is change it, and if there isn't leave it.

Its not just the play you have to worry about, its the amount of force that the conrod goes through. Which is why its important to pre-heat new engines during running in and also during the first gallon or so of fuel.

['caster master]

I would have thought the force that goes through the conrod would wear out the bush unless you don't run your engine in correctly in which case it would just snap before the bush wears enough for there to be excessive play. Maybe somebody wth better knowledge can clarify this?

[Tron]

I would just say after the first gallon or 2 take it apart and see if there is any play, if there is change it, and if there isn't leave it.

You might be wasting your money if thats the case.
Really you should measure the diameter of the crank pin for wear, once its gets ~0.05mm out of spec you should change the crank as changing the conrod would have little to no effect on the slop.

[Ginters]

Just a brief update on mine

Ran at nationals this weekend and performed flawlessly didn't cut all day and ran an hr's worth of finals

Finally dropped its nuts in the last one after over a gallon of fuel, so come Sunday I will be tuning for power and economy happy days!!