I am building a G3WO engine and I am not sure which way round the piston should be fitted. There is a slit cut in one side of the piston skirt, should that face the front of the bike or the back?
Steve.
G3 Piston Orientation
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- Duncan
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Re: G3 Piston Orientation
I have just dug out a new standard 9990 piston that has FRONT stamped on the small round crown on the side with the slit. Heplex_Pistons_Fitting_Instructions in the Archives states the split should be facing the non-thrust side of the engine.
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Re: G3 Piston Orientation
Thanks for replying Duncan. It makes sense that the split would be on the non thrust side, but wouldn't that make it facing the rear of the bike?
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Re: G3 Piston Orientation
My mistake the thrust side would be the rear face, so the split would face the front.
Thanks.
Thanks.
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Re: G3 Piston Orientation
To be honest I couldn't work that one out when I read it either
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Re: G3 Piston Orientation
is it not like this , viewed from timing side ? , so slit to front of engine
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Re: G3 Piston Orientation
Excellent Peter thanks, in my head I know split to the front, but I needed to find the evidence to advise.
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Re: G3 Piston Orientation
easy when you know
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Re: G3 Piston Orientation
Thanks all!