Hi,

After pinging a wrist pin circlip into the back of my garage never to be seen again I was wondering if it would be safe to use a normal internal circlip (you know the ones with the two holes in that you can use proper circlip pliers on) rather than the simple flat wire ones?

Its only for a small 6 - 7 hp 4 stroke single cylinder motor on a small dirt bike.

Cheers

In a word yes
There was debate on Turbosports about wire over flat and flat was considered better
However for high power high revs the circlip should be a tight fit compressed so there is minimal gap when in the groove
You should put the gap in the oil groove so some oil still hits the pin end

thanks!

In a word - no , the groove will be rounded to suit the wire clip , but a circlip needs a deeper square groove . The 45 degree chamfer in the ends of the pin force the clip into the groove - that wont happen with a circlip .

[Edited on 23/8/13 by clairetoo]