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Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 9:35 amby Scooterslag
Recently picked up a good Innocenti SX/GP 150 top end and original Borgo piston. However didn't come with a gudgeon pin. Not a problem as I have a couple of decent examples to choose from. Problem is all of them are mega-tight to the point of not even being able to get the pin in the piston at all. Any tips to help this? don't want to go bonkers and try and grind/rub etc and bugger it up when there might be a more accurate and effective way of doing this? Thanks Paul
Re: Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 11:16 amby hullygully
heat?
Re: Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 11:27 amby Scooterslag
hullygully wrote:heat?
Maybe but I'd like there to be a little more insertion ( oo er
) with the pin.
Re: Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 3:05 pmby hullygully
Jap pistons & Wossner have a lot of slack re-gudgeons, but original pistons were allways a tw*t, just heat the piston up bud
Re: Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 3:33 pmby Tractorman
Only needs a quick blast with a hot air gun.
Re: Tight Gudgeon pin
Posted:
Thu Apr 28, 2022 3:53 pmby Scooterslag
Cheers fella's - yeah fitted tight pins before with heat but none quite as tight as this one. Its not going to be assembled at the mo- I'm just giving it a once over. Cheers Paul
Re: Tight Gudgeon pin
Posted:
Fri Apr 29, 2022 11:58 pmby Fast n Furious
Yep... a hot piston and a freezered gudgeon pin. Always a bit easier to assemble if the cylinder studs are removed.