Grinding down Gudgeon pinn 2 teenth off a milimeter

Non-engine, eg: aerodynamics, gearboxes, brakes, suspension
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torkil
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Grinding down Gudgeon pinn 2 teenth off a milimeter

Post by torkil » Mon Jul 20, 2015 2:33 pm

Hi Mr Croft ,Have you any experience grinding down piston gudegon pins , my pins are just a bit to large ? OVE
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Guy Croft
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Re: Grinding down Gudgeon pinn 2 teenth off a milimeter

Post by Guy Croft » Tue Jul 21, 2015 10:02 am

this is no problem.

If the pins use round wire clips the pins must be chamfered. If spiral locks are used the pins must be flat-faced.

So you can grind off as much as you want but be sure to keep the shape the same.

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Piotrek125p
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Re: Grinding down Gudgeon pinn 2 teenth off a milimeter

Post by Piotrek125p » Sat Feb 13, 2016 5:23 pm

GC, what do You thinking about reducing a gudgeon pin weight by making his ID bigger eg. in lathe ?

From technical this is a bit tricky op because pins are always hard and need a special tools for hard materials, but I would like to know your point of view, due to strength a modified by this way pins.
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Guy Croft
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Re: Grinding down Gudgeon pinn 2 teenth off a milimeter

Post by Guy Croft » Sat Feb 13, 2016 6:17 pm

don't mess with wrist pin ID

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Piotrek125p
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Re: Grinding down Gudgeon pinn 2 teenth off a milimeter

Post by Piotrek125p » Fri Feb 19, 2016 6:50 pm

It looks that I wil use unfortunely an OE heavy pins (about 130g).
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