aluminum rods - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 12-23-2008, 10:36 AM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
aluminum rods

i have a set of childs albert aluminum rods(small journal) that i would like to put in a 283 but i don't know if they will take the rpms

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-23-2008, 11:44 AM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,686
Wiki Edits: 0

Thanks: 3
Thanked 403 Times in 348 Posts
Quote:
Originally Posted by jgh64pkup
i have a set of childs albert aluminum rods(small journal) that i would like to put in a 283 but i don't know if they will take the rpms
What are the RPMs?

bogie
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-23-2008, 12:44 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

i was hoping for 7400 to 7800
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-23-2008, 01:42 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,686
Wiki Edits: 0

Thanks: 3
Thanked 403 Times in 348 Posts
Quote:
Originally Posted by jgh64pkup
i was hoping for 7400 to 7800
Assuming they're in good condition there's no reason why you can't turn those kind of revs.

The big enemy of aluminum rods is fatigue fracture which is the result of work hardening that comes from the constant changes in loading from compression to tension and back again as the engine passes thru its cycles. This alternately stretches then compresses the rod which is something that aluminum has problems with when it's encountered over a long period of time.

For this reason in a race engine the rods are frequently inspected for stretch and cracking. In street engines and long distance racing engines it is often felt that aluminum rods don't offer sufficient longevity. But there are plenty of exceptions to the popular wisdom.

Aluminum rods are nice with blower and nitrous engines as well as those running rocket fuels like nitro-methane and will offer some protection to the rod bearings on engines that run in detonation as the aluminum will give a bit softening the blows on the crank journals.

Be sure to re-balance and add about .010 to .015 inch clearance between the piston crown and the head's squish/quench deck as aluminum rods will thermally grow more than steel rods so without a little additional clearance there is the risk of running the piston into the head.

Bogie
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-23-2008, 02:34 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,556
Wiki Edits: 326

Thanks: 695
Thanked 877 Times in 745 Posts
When checking ferrous metals for cracks, a magnetic procedure is used (magnaflux). Since aluminum is non-ferrous, a dye penetrant procedure is used. See if you can find someone in your area who can Zyglo the rods before you install them or purchase a Zyglo kit and do it yourself....
http://www.magnaflux.com/penetrant/penetrant.stm
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-23-2008, 04:33 PM
OHD's Avatar
OHD OHD is offline
Member
 
Last photo:
Join Date: Sep 2008
Location: outhouse
Posts: 285
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
If they are used aluminum rods do not use them in a fresh rebuild.

They were removed for a reason...
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 12-23-2008, 07:50 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

can a 283 be bored .125 over to a 4 inch bore without any cooling issues
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 12-23-2008, 07:59 PM
coldknock's Avatar
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 42
Posts: 1,528
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Have the block sonic tested for cylinder wall thickness. I built one at 0.100" over and loved it.

The cooling issues are a myth perpetuated by people with an inadequate understanding of how to put together a properly functioning cooling system.



Larry
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 12-23-2008, 08:09 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

i found some forged dome pistons to make a 302 out of a 283 would that be worth the trouble
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 12-23-2008, 08:16 PM
coldknock's Avatar
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 42
Posts: 1,528
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
A 4" bore is a necessity to fit anything larger than 1.94/1.50 valves. Soo, if you want it to breathe and make some power you need to have at least 3.975" of bore for 2.02/1.60 valves, and actually use them.

If you can get the 302 pistons for a reasonable price, and the block checks out for a 0.125" over, go for it.



Larry
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 12-23-2008, 08:24 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,556
Wiki Edits: 326

Thanks: 695
Thanked 877 Times in 745 Posts
"The cooling issues are a myth perpetuated by people with an inadequate understanding of how to put together a properly functioning cooling system."

Eloquent. I have a deep appreciation for a well-structured sentence.

jgh, have the cylinder walls beeped. If they will be minimum 0.135" after boring and honing, go for it.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 12-23-2008, 08:35 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

my buddy has the pistons and it has small journal mickey thompson aluminum rods he also said he'll throw in the crank

he said since they were in his shop collecting dust he would sell them to me for 100 bucks
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 12-23-2008, 08:38 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

I also have some powerpack heads i would like to ream and put bigger valves in would 2.05/1.60 be too much for the 302
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 12-24-2008, 06:28 AM
bondo's Avatar
Member
 
Last photo:
Join Date: Nov 2002
Location: Chaumont Bay N.Y.
Posts: 960
Wiki Edits: 0

Thanks: 7
Thanked 15 Times in 15 Posts
Quote:
and it has small journal mickey thompson aluminum rods he also said he'll throw in the crank
he said since they were in his shop collecting dust he would sell them to me for 100 bucks
I also have some powerpack heads i would like to ream and put bigger valves in would 2.05/1.60 be too much for the 302
Ayuh,...

Are you even Reading the responces offered to you here,..??

What is the History of those Aluminm Rods,..??..??
If they're Used,... They're Junk,.. Wall hangers,.. NFGood.....

Quote:
A 4" bore is a necessity to fit anything larger than 1.94/1.50 valves. Soo, if you want it to breathe and make some power you need to have at least 3.975" of bore for 2.02/1.60 valves, and actually use them.
That's the Answer to your 2.05" Valve Question.....
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 12-24-2008, 03:04 PM
jgh64pkup's Avatar
Registered User
 

Last journal entry: new et streets
Last photo:
Join Date: Dec 2008
Location: eastland,texas
Age: 19
Posts: 209
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
re: aluminum rods

do you think it will not have enough torque on the low rpms for a street truck since most of the power is from about 3500 up
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Are these sbc 5.7 rods any good? eric32 Engine 10 09-08-2008 08:55 PM
BBF connecting rods fourtwoseven Engine 0 03-04-2006 03:15 PM
5.7 rods in 400 joefromcocomo Engine 9 02-05-2004 11:59 AM
Prepping Aluminum Interior for Paint/Clear maxx levell General Rodding Tech 3 08-31-2003 03:53 PM
aluminum rods on the street iniguy Engine 6 04-21-2003 06:42 PM


All times are GMT -6. The time now is 05:01 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.