no play connecting rod 1 side only - Page 2 - 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
  #16 (permalink)  
Old 07-23-2013, 02:12 AM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Thanks, I'll grab some plastiguage tomorrow.
Heres my youtube video of the issue just so all can see.

https://www.youtube.com/watch?v=XOZv...e_gdata_player

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 07-23-2013, 02:17 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
No chance there's a bearing half that's the wrong size? You can look at the back side of them to see the size. Also have you tried the bearing from a good rod on the "bad" rod/journal to see if the bearing in the bad rod is the prob?
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 07-23-2013, 06:10 AM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
No, I tried two fresh standard sized bearings already and they fixed nothing.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 07-23-2013, 06:26 AM
engineczar's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Sep 2002
Location: In Flowbench nirvana
Age: 52
Posts: 1,677
Wiki Edits: 0

Thanks: 6
Thanked 57 Times in 52 Posts
Have you verified that both bearing shells on the suspect rod are the correct size? Look on the back of the bearings and check the size that's stamped on them. It's not very common but it's possible that a -.10 half got mixed in with a standard size. Also check the number that's etched on the rod and cap to see if they match. Eagle usually uses a 4 digit number.
__________________
BSE Racing Engines
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 07-23-2013, 02:14 PM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,228
Wiki Edits: 0

Thanks: 0
Thanked 109 Times in 100 Posts
Check the offending rod for twist (alignment). .

That is a routine procedure when resizing used rods and checking new rods before assembly. You correct for rod twist on used or new rods by having the big ends parallel ground. However, new rods should be replaced by the manufaturer .

Last edited by MouseFink; 07-23-2013 at 02:20 PM.
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 07-24-2013, 06:55 PM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Allrighty then.
After exhaustive efforts of measurement, disassembly and reassembly, I have discovered our rat.
Huge kudos to Richiehd and Engineczar!
The issue is rod and cap mismatch from eagle.
The eagle numbers from the rod do not match the cap.
If I knew how to post pictures I would show this.
I am now composing an email soon to be sent to summit whom I bought this assembly through.
I have heard that their customer service may be good.
I hope that it is.
Will keep you all posted in interest of consumer satisfaction information.n.
Thanks to all of you again!
This has proven to be a great forum to be a part of.
I will strive to put in as much as I've gotten out or more.
Reply With Quote Quick reply to this message
The Following User Says Thank You to Woodsman For This Useful Post:
Richiehd (07-24-2013)
  #22 (permalink)  
Old 07-24-2013, 08:17 PM
Member
 
Join Date: Apr 2004
Location: Cassville,MO
Posts: 844
Wiki Edits: 0

Thanks: 23
Thanked 49 Times in 45 Posts
Just goes to show you that you should spin the crank after torqueing the mains and after each piston/rod assy. Never " just go with it" if anything tightens up. This is even another reason to do a mock up assembly with no rings on the piston. Tight bearings are always wrong.
Reply With Quote Quick reply to this message
The Following User Says Thank You to tresi For This Useful Post:
Richiehd (07-24-2013)
  #23 (permalink)  
Old 07-24-2013, 08:34 PM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 879
Wiki Edits: 0

Thanks: 198
Thanked 62 Times in 55 Posts
And you don't have another one where that cap belongs do you?
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 07-24-2013, 08:43 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Rather odd that this wasn't caught a LOT earlier than it was. I mean, the numbers don't match- pretty obvious there's a problem... not beating on you, just saying. It wouldn't surprise me if the right rods and caps are there, somewhere. And conversely it also wouldn't surprise me that someone, somewhere **** the bed and shipped the wrong parts. That's why we always check everything prior to assembly.
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 07-24-2013, 10:08 PM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Gentlemen, I regretfully must eat my words entirely.
Hopefully, you will all respect my honesty as an honorable and chivalrous act! Take pity please!
Moments after my last post, I came upon a ureka moment.
Before this story begins, a builder is building this engine for me.
He calls me to say a rod wont spin.
I visit, and find the cap is put on backwards. I inform him. He springs for a new rod and installs it to my old piston free of charge.
I decide I will put this engine together myself.
I put in all rods and piston assemblys, new one included.
The problem arises.
I talk with you all.
I measure thrice and fource.
I try the question rod in alternate position.
It works.
So does the rod from previous position.
I check part numbers, they all match top and bottom.
Heres the hitch : one side of the rods often has a matching two digit code on top and bottom.
It is regrettably the OTHER side of rods numbers that matter.
The botched rod assembly up was put on backward AND was the incorrect numbered cap is the other hitch.
He had kept that botched rod and cap assembly while I moved forward.
I went over to his place to retrieve aforementioned botched rod assembly.
I never had realised that my cap and rod bases on two of my assemblies were mismatched as I was looking at the wrong #s on those two
The botched cap's mismatched #s showed me the way.
I had two mismatched rod assemblies.
Simply swapping one end cap to the corresponding rod end solved one of the two issues.
I am now left with one (the final position) with a mismatched end cap and rod. (Which coincidently seem to work swimmingly together as they gauge out to .020" end clearance measuring at both sides of rod at the same time and will be measured for bearing to journal clearance tomorrow)
WOULD I BE OK WITH THIS MIX IF IT MEASURES ALSO AN OIL CLEARANCE / BEARING TO ROD JOURNAL OF ACCEPTABLE NUMBER?
THE SIDES HAVE NO VISUAL STEP TO THEM.
A heap of humility from yours truly.
It is my hope that if anything can be learned from this story, it is that even if you check everything three or even four times, go to bed, sleep, think, sleep, do something else, think again, and then it will all cime to you. Also, don't be an idiot like me.
Thank you all again for your time and consideration.
You have helped wether or not it seems so.
-The Woodsman-
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 07-24-2013, 10:55 PM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
The answer is the mismatched rod assembly I am left with is not acceptable although it clearances well. It is a balance by weight issue. I am ordering another rod which I will have assembled at a machinist then install to my engine.
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 07-24-2013, 11:38 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by Woodsman View Post
The answer is the mismatched rod assembly I am left with is not acceptable although it clearances well. It is a balance by weight issue. I am ordering another rod which I will have assembled at a machinist then install to my engine.
Why not simply resize that rod/cap? Cheaper and totally reliable way to rectify things.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 07-24-2013, 11:47 PM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I figure because its a balanced assembly, and will need the correct weights on big end small end.
Also, the off chance there is an even slight step where the two unmatched halves meet.
I'm obviously quite anal when it comes to measurements, though I've no idea if I really need to be in this instance
As stated, the side clearance is .020" with a feeler gauge on both sides of the rod.
I haven't checked the journal to bearing "oil" clearance yet, although, in the end, eagles numbers are mind-bogglingly accurate. Much respect to their tooling and expertise.
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 07-24-2013, 11:50 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Quote:
Originally Posted by Woodsman View Post
I figure because its a balanced assembly, and will need the correct weights on big end small end.
Also, the off chance there is an even slight step where the two unmatched halves meet.
I'm obviously quite anal when it comes to measurements, though I've no idea if I really need to be in this instance
As stated, the side clearance is .020" with a feeler gauge on both sides of the rod.
I haven't checked the journal to bearing "oil" clearance yet, although, in the end, eagles numbers are mind-bogglingly accurate. Much respect to their tooling and expertise.
Resizing the big end removes any possibility of there being a "step" or mismatch at the parting line between the cap and rod. These rods should have been weight matched as a set. Buying a new, different rod will not guarantee the rod will match the others.

Resizing the rod is not a half-*** fix. It's how it's done.
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 07-24-2013, 11:56 PM
Woodsman's Avatar
Registered User
 
Join Date: Jul 2013
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I had meant the possibility of an outside step. One that would wear against the adjacent outside of rod & cap.
As for the purchase of a new rod, I'd have ordered direct from eagle with it weighted to match, but you are winning me over with the resizing deal, because I somewhat expect the shop would check the outside too.
By the way, cobalt, you are a great help...... thank you very much for chatting on this thread!
Reply With Quote Quick reply to this message

Tags
connecting rod, no side play, side play, stuck connecting rod

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:
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
Tailshaft side play for a TH 350 sstock Transmission - Rearend 2 06-03-2012 02:13 PM
Connecting Rod Help Chevyjeepster Engine 17 12-08-2011 06:07 PM
connecting rod side clearance bill plise Engine 2 06-04-2011 08:20 AM
connecting rod question BBCMudbogger Engine 2 02-26-2006 11:56 AM
Connecting rod side clearence ???? ktorr22 Engine 8 08-16-2004 08:20 PM


All times are GMT -6. The time now is 11:23 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.