Welcome to Camaro Z28!

Welcome to CamaroZ28.Com, the ultimate Source for Camaro enthusiasts! Here you can join over 90,000 Camaro enthusiasts from around the world discussing all things related to Camaros and more. You are currently viewing as a guest which gives you limited access to view discussions

To gain full access to our forums you must register for a free account. As a registered member you will be able to:
  • Participate in over 40 different forums and search/browse from over 5 million posts.
  • Upload your Camaro details to your Garage
  • Post photos, respond to polls and access other special features
  • Gain access to our free marketplace to buy, sell and trade Camaros, parts and more.
All this and much more is available to you absolutely free when you register for an account, so join our community today today!

If you have any problems with the registration process or your account login, please contact support.


Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > LT1 Based Engine Tech
Sign in using an external account
Register Forgot Password?
Register Garage Photos Blogs FAQ Members List Social Groups Links Calendar Search Today's Posts Mark Forums Read Z28LiveVendor Directory


Reply Post New Thread
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 11-17-2006, 11:18 AM   #1
Registered User
 
AlwaysCode390's Avatar
 
Join Date: Jun 2005
Location: STL
Posts: 925
Exclamation Floating Rods need Floating Pistons?!---

Well I bought a new set of I beam rods attached to a new set of SRP pistons I want to use on my le2 build. They are PRESS FIT rods. I now have floating h-beam rods....can I still use the SRP pistons on the floating rods or do they need to be floating Pistons to work with the floating rods?! Thanks ---
This ad is not displayed to registered members.
Register your free account today and become a member on CamaroZ28.com!
__________________
90' Lingenfelter ZR-1 Corvette #699
91' SYCLONE AWD mini truck #512 {FS} 75k miles
01' Dodge VIPER GTS
03' Harley Davidson F-150 #577 {FS} 28k miles
AlwaysCode390 is offline   Reply With Quote
Old 11-17-2006, 11:25 AM   #2
Banned
 
Join Date: Oct 2002
Posts: 6,522
Uhhh no but now you need a machine shop that has a pin heater to install them.... for the $20 more a set of rods you should have done the bushed rods.

Bret
SStrokerAce is offline   Reply With Quote
Old 11-17-2006, 11:49 AM   #3
Registered User
 
AlwaysCode390's Avatar
 
Join Date: Jun 2005
Location: STL
Posts: 925
I know, you talked me into the bushed floating h beams that I now have.

I originally purchased the NEW srp pistons and NEW i beams w/ pressed fittings pre-installed from someone on this forum . Good to know I just need a shop to unpress the i beam setup and I can still use the pistons, thanks ---
__________________
90' Lingenfelter ZR-1 Corvette #699
91' SYCLONE AWD mini truck #512 {FS} 75k miles
01' Dodge VIPER GTS
03' Harley Davidson F-150 #577 {FS} 28k miles
AlwaysCode390 is offline   Reply With Quote
Old 11-17-2006, 09:45 PM   #4
Banned
 
Join Date: Oct 2002
Posts: 6,522
You'll probably want them to externally hone the pins for you as well.

Bret
SStrokerAce is offline   Reply With Quote
Old 11-18-2006, 07:30 AM   #5
Moderator
 
rskrause's Avatar
 
Join Date: Dec 1969
Location: Buffalo, New York
Posts: 10,761
Send a message via AIM to rskrause
Choose a good shop and be sure to tell them you are going to re-use the pistons. It's easy to damage them when removing the pins.

Rich
__________________
'95 Z-28 383: Procharger, nitrous, etc. BBC 27T race car. "Every man dies, not every man really lives" William Wallace (Braveheart)
rskrause is offline   Reply With Quote
Old 11-18-2006, 08:16 AM   #6
Registered User
 
Join Date: Aug 2005
Location: Kantuckee Yo'
Posts: 4,407
Let me ask several stupid questions relating to the post.
1. Can you get pistons in either press-fit or bushed?
2. Bushed rods must be used with bushed pistons?
3. Pressed rods must be used with pressed pistons?
4. Do bushed rods and pistons require pressing in any way shap or form or is it like snap rings or similar?
5. What are the advantages or disadvantages to bot pressed an bushed?
wrd1972 is offline   Reply With Quote
Old 11-18-2006, 08:37 AM   #7
Moderator
 
rskrause's Avatar
 
Join Date: Dec 1969
Location: Buffalo, New York
Posts: 10,761
Send a message via AIM to rskrause
1. Can you get pistons in either press-fit or bushed?
The pistons are the same.

2. Bushed rods must be used with bushed pistons?
See above, it's the rods that differ.

3. Pressed rods must be used with pressed pistons?
See above.

4. Do bushed rods and pistons require pressing in any way shap or form or is it like snap rings or similar?
All pistons need some form of pin retention (SPIROLOX, WIRELOX, PIN BUTTONS).

5. What are the advantages or disadvantages to bot pressed an bushed?
Most stock wrist pins will be held in place by an interference fit. A press fit pin is harder to assemble and disassemble. If the rods have been shot peened or heat-treated, you should not heat the rods to assemble them. It is very hard to press a pin in or out of a rod without doing damage to the piston. For most street engines a press fit will work fine. In higher output engines, the heat in the piston can arc the piston more and require an extra 0.0005" pin clearance to prevent galling. Full floating pins eliminate the need for this. It is possible to use a full floating pin with a stock rod, but we run into the question, is it worth it? If it's a drag only car that sees very few miles, the rods can be honed out so the pin rides directly in the rod. With good oiling, this steel-to-steel fit can last a long time in a drag car, but shouldn't be done in a street engine. If you want to bush the small ends (you must have a good set of rods with enough meat around the small hole) you have to bore it .050" oversize to accommodate a .025" wall bushing. Some engine builders drill holes in the top and bottom of the pin bores for oil, but this can weaken the rod, it's better to just file a .010" slot on each side of the bore to let oil in (this works whether you use a bushing or not).

Rich
__________________
'95 Z-28 383: Procharger, nitrous, etc. BBC 27T race car. "Every man dies, not every man really lives" William Wallace (Braveheart)
rskrause is offline   Reply With Quote
Old 11-18-2006, 09:25 AM   #8
Registered User
 
razor02097's Avatar
 
Join Date: Aug 2006
Posts: 927
Blog Entries: 5
Garage
I know japanese 4 cycle motorcycle engines use rods with bushings on the ends and full floating pins although it may be for a different reason.
__________________
1994 Camaro Z28 M6 (under construction): !CAGS, !AIR, !EGR, !Oil cooler, !Spare, Moroso CAI, Magnaflow catback, DS loop, UMI panhard relocation kit, TB bypass, AIT relocation, TF elbow, LS1 front brakes, B&M ripper, SLP line lock, C5 wagon wheels.
razor02097 is offline   Reply With Quote
Old 11-18-2006, 09:32 AM   #9
Registered User
 
Join Date: Aug 1998
Location: Perryopolis, Pa
Posts: 520
For further clarification....

You can use a piston designed for a floating rod with a pressed rod, but you cannot use a piston designed for a pressed rod with a floating rod.

The piston must have snap ring grooves for pin retention in order to use a floating rod. Most OE replacement pistons do not have this groove.

Your SRP's will work with either.
__________________
Lonnie Pavtis
Lonnie Pavtis is offline   Reply With Quote
Old 11-18-2006, 09:32 AM
 
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 06:14 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.