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-   -   Teflon cap for end of Clutch slave piston (https://www.miataturbo.net/wtb-7/teflon-cap-end-clutch-slave-piston-86000/)

thumpetto007 09-22-2015 09:56 PM

Teflon cap for end of Clutch slave piston
 
I have a squeak that I've tried a few different greases, and low friction tape, to eliminate.

Some people have put o-rings, but I'd like a machined teflon cap.

Any leads on where to contact for this?

deezums 09-22-2015 09:59 PM

There's a place in KC I've brought pizza and pie crust forms to before for teflon coating.

It's called LPF coatings, there should be places near you that can do the same. It was not cheap.

Teflon is a bitch of a material, it's brittle and not very machinable, almost like compressed talc powder. You aren't getting a durable cap made that will fit, not for anything reasonable.

thumpetto007 09-22-2015 10:13 PM

Hm. Should I be looking at a different material? Like some sort of poly or rubber cap?

ftjandra 09-22-2015 11:18 PM

Are you talking about a cap to go between the pushrod and piston 'cup' (inside the rubber boot) or between the pushrod and fork?

Search for 'teflon rod' on McMasters. I've only had experience with teflon sheets, but it might be too soft and has a tendency to 'creep'. Delrin or nyloil are other options.

Supply the material/drawing (or slave) and I should be able to make one for you on the lathe (pending free time...).

--Ferdi

thumpetto007 09-23-2015 01:04 AM

Working with Ferdi for a solution,

Thanks everyone!

rleete 09-23-2015 05:49 AM

Screw Teflon. Go with Kynar.

thumpetto007 09-24-2015 06:16 PM

^will do, thanks!

Ben 09-24-2015 09:13 PM

Ferdi, I'd be in for a nyloil bushing or 4. Let me know how I can help.

thumpetto007 10-20-2015 06:22 PM

Ferdi has finished a cap in each of four materials for me to try out.

They look fantastic, I can't wait to be squeak free!

I'll post the picture when i get home.

shuiend 10-21-2015 08:25 AM

I am in for several of them.

thumpetto007 10-21-2015 11:20 AM

I don't know if he made any extras, but I'm only receiving one of each material.

Ferdi was saying he won't be taking any side machining jobs for awhile, but just try contacting him anyways.


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