Floating Gudgeon Pins
Turbo Mini Forums

What are peoples opinions on floating pins? I am thinking about having my rods machined to have floating pins and then use teflon caps?

I'm thinking about doing these, as I think it may be easy to strip the engine each year, what are your thoughts guys??

Team Racing

I think you should go for it! :)

Here are mine:

http://home.online.no/~lyngset/minebilder....Type=&pExPic=0;

They're aluminium buttons, not teflon though.

ive got fully floating pins with circlips. handy if you melt a piston, but the clips are a little tricky to remove. my only point is my engine was done by a well known engine builder and the small end has been machined out but there's no bush or bearing in it that i could see. there is also no wear on the pin so all seems well.

With circlips I would definately use teflon/nylon buttons as well. I have previously had one get out and wreck an engine.

Tom
i assume you mean fit teflon bushs as well as circlips. i've not had a problem but will trust you on this as its better to be safe than sorry!

I've just binned the circlips and fitted teflon buttons.

You can't fit both (well not on my pistons) because the clip protrudes on the internal diameter of the gudgeon pin.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

ive got forged omega's if this helps

ive gone to floating gudgeon pins this year, aparently you can rev higher with them and its a bit of insurance against anything popping out!

i have floating pins in my omegas, my rods were machined by arrow for the small pins they use. Worth noting that the rods supplied by minispares, ones im using, as being S-reproductions rods are well on the piss. Infact the guy at arrow said that they were 20 or times out of spec (over their top amount of missalignment allowed, i think it was 20 anyway). This means that the little end wanst parallel/aligned to the big end. This can cause some really severe wear.

Bearing this in mind, MED said they could do it for me and it was an easy operation - all i'd need is an adjustable reamer or honing tool. Since finding all this out i have vowed never to use MED ever again.

I've seen the future and tbh its Pie

Have you guys instered a bush into the small end, or not bothered?

Team Racing

On my S rods from my 1418cc engine there are no bushes.
However, I bought two rods from Bill Sollis which were Longman built, and these have got the bushes. May be because Miglias run JE pistons with smaller wrist pins. I cannot see any harm in NOT using these. The rods are harder than the bushes. If the rods get worn, it's easy to install bushes at a later date!

that was my thinking,

Thanks mate

Team Racing

no turning back now! just picked up my rods from the machine shop. I now have floating pins

Team Racing