Automotive Forums .com - the leading automotive community online!
Become a fan of Igor Sushko on Facebook!
-
Please Register or Login to access: DriverSide DriverSide Home | Service & Repair | Car Prices | Parts & Accessories | Reviews & Advice | My Garage
Google  
Web AF
See Latest Posts
Access AF from your phone - point your mobile browser to http://m.automotiveforums.com
Go Back   Automotive Forums .com Car Chat > Chevrolet > Nonspecific
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 09-29-2006, 11:39 AM   #1
capriceowns
AF Regular
 
Join Date: May 2006
Location: detriot, Michigan
Posts: 423
capriceowns Normal reputation
Pressed and floating piston pins

What exactly do these 2 terms mean, Im looking at pistons for my stroker, I ordered a Eagle stroker crank for 1 piece seal blocks and rods, and i found the 18cc dish top keith blacks giving me 8.7:1 with my 76cc heads(thats still pump gas right?)

I can order them with a floating pin or pressed, thats what I dont get.
__________________
1987 Chevrolet Caprice classic Brougham. 142,000 on the 305 and still chugging
capriceowns is offline   Reply With Quote
Old 09-29-2006, 12:46 PM   #2
silicon212
AF -Advisor
 
silicon212's Avatar
 
Join Date: Oct 2005
Location: Mesa, Arizona
Posts: 3,474
silicon212 Normal reputation
Send a message via ICQ to silicon212
Re: Pressed and floating piston pins

Pressed means the pins are pressed into the small end of the rod. Floating means the pins are retained in the pistons with snap rings and the rod is bushed so that the pin can move around in it. Of course, this means the rods have to be prepared for the floating pins.

Stock pistons are pressed.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1!

PC Club is dead. Long live PC Club!
silicon212 is offline   Reply With Quote
Old 09-29-2006, 01:04 PM   #3
bobss396
AF Enthusiast
 
bobss396's Avatar
 
Join Date: Jul 2004
Location: long island, New York
Posts: 1,341
bobss396 Normal reputation
Send a message via AIM to bobss396
Re: Pressed and floating piston pins

There's a lot of perceived pros and cons to both conventions. Floating pins require more parts, more machining. They can also promote piston skirt slap since you have introduced another axis of motion into the mix. Some racers use coatings on the piston skirts to combat it.

Unless this is a race-only engine, you'll be gaining little by going to floating wrist pins.

Bob
bobss396 is offline   Reply With Quote
Old 09-29-2006, 01:06 PM   #4
capriceowns
AF Regular
 
Join Date: May 2006
Location: detriot, Michigan
Posts: 423
capriceowns Normal reputation
Re: Pressed and floating piston pins

Can I still order them as pressed? even if Im not buying the rods and pistons together.
__________________
1987 Chevrolet Caprice classic Brougham. 142,000 on the 305 and still chugging
capriceowns is offline   Reply With Quote
 
 
 
 
Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Chevrolet > Nonspecific

« Previous Thread | Next Thread »
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:31 AM.

Google  
Web AF
Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
no new posts