V-Twin Forum banner

1 - 8 of 8 Posts

·
Registered
Joined
·
66 Posts
Discussion Starter · #1 ·
I've got my cylinders and heads off & @ Truett & Osborn

for Valve job and rebore. On the reassembly what's the pro's and cons of

clips vs the teflon bottons to hold the piston pin in place in the piston?

Thanks,

IKE
 

·
Premium Member
Joined
·
77 Posts
I believe it,s more convienience than anything else......I,ve built several sidewinders(93") and used teflon buttons on all them,they all had forged pistons which usually are set up a little looser than cast.
You really want to check with the peaple that make the pistons your going to use!!!
 

·
Registered
Joined
·
372 Posts
I found that the teflon buttons require more clearance than they say.
I have not seen pistons that use them for quite some time, I think they are not used much these days.
 

·
Registered
Joined
·
29 Posts
use the style keeper and pin that goes with the piston. The teflon button is just a cheap way to machine pistons. That said, I've been running S&S with buttons on my engines for 30 years with no worries.

Cracky
 

·
PHUCKING BIKER!
Joined
·
636 Posts
first buttons I used back in the 70s were with axtell pistons. I used to over rev a lot and dropped a c clip or two, never dropped a button though
 

·
Premium Member
Joined
·
11,928 Posts
we use buttons on all our builds. never had a button failure.have seen circlip failures.
keep in mind-- if the pin can walk, you will suffer major damage to the cylinder wall.
 

·
Registered
Joined
·
5 Posts
clips verses buttons

Ive also been running buttons longer than i care to say.With no probs.Ive worked on alot of cyl. over the with walked clips though.Also to me asembly easier and faster set jugs on bench upside down slide in pistons till almost to base turn over slide over rod slie in wrist. buttons and send him on down for just a lot easier,also I can be nice and carefull compared to trying to compress rings slide stuff down pain.Believe it or not you can slide rings in to bore on the bench with just you finger nails honest!
 

·
Registered
Joined
·
798 Posts
L.Linkert said:
I found that the teflon buttons require more clearance than they say.
I have not seen pistons that use them for quite some time, I think they are not used much these days.

Yes, they are still used these days. I just bought S & S forged pistons(9-1 cr) for my 96" shovel, they came with teflon buttons. Love em!
 
1 - 8 of 8 Posts
Top