Gudgeon pin clips

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sportston
Expert racer
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Country: England, UK
Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Gudgeon pin clips

Post by sportston »

I recently had a conversation with an old engineer I know. I often go to him for advice and he is very competent. When i showed him the two different types of gudgeon pin retaining clips I had available to fit on my GT380, he told me that one was a good design but the other was severely flawed by design. The genuine Suzuki clip is designed to get tighter if the bevelled edge of the gudgeon pin pushes against it (a good design). The Cruisin Image clip that came with my pistons however is a different kettle of fish! This type has curled ends that bend back into the centre of the hole in the piston allowing them to be easily fitted and extracted with a pair of thin-jaw pliers. You would think this would be a good thing but....this means that the flat edge of the gudgeon pin will press against the clip before the bevelled edge does, thus pushing it out of the hole. Cue broken clip, damaged piston, rebore and possible damage to crankshaft etc.

I just thought that it might help a few guys on here to save them hassle of an expensive engine rebuild. I'm rather glad I took the sensible advice from some of the guys on here to get and fit a set of genuine Suzuki clips. Not only are they sprung far stronger than the aftermarket equivalents, they are also better by design. :up:
Suzuki, better by design...hasn't someone already used that phrase as a marketing tool? :?
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joolstacho
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Re: Gudgeon pin clips

Post by joolstacho »

Yes, very useful observation mate. :up:
GTandcbr
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Re: Gudgeon pin clips

Post by GTandcbr »

Very good info thanks for posting
98 carb Blackbird and GT550j
CFS
Around the block
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Suzuki 2-Strokes: GP125, GT380

Re: Gudgeon pin clips

Post by CFS »

And here is a link to a YouTube video explaining it all.
https://youtu.be/KFWcA08aTCM" onclick="window.open(this.href);return false;
dollydog
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Re: Gudgeon pin clips

Post by dollydog »

sorry, but nobody with half a brain would EVER use those curly type circlips :D these are what you want - good old british steel :D :D :D
https://www.ebay.co.uk/itm/SUZUKI-GT380 ... 1438.l2649" onclick="window.open(this.href);return false;
cheers, dd.
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.
CFS
Around the block
Posts: 79
Joined: Tue Nov 07, 2017 3:25 pm
Country: Portugal
Suzuki 2-Strokes: GP125, GT380

Re: Gudgeon pin clips

Post by CFS »

Or you can buy them from Robinsons foundry (original Suzuki) for less than that inclusive of postage. :up:
dollydog
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Suzuki 2-Strokes: several gt250 ramairs

Re: Gudgeon pin clips

Post by dollydog »

unfortunately original sgp circlips can be bent between your finger and thumb, which is why i pay more and buy british :D :D :D
cheers, dd.
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.
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