Your donations help keep this valuable resource free and growing. Thank you.
|
Rod Bushing service for 390...asap |
Post Reply | Page 123 4> |
Author | |
amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
Post Options
Thanks(0)
Posted: Feb/06/2013 at 9:27pm |
IIRC the factory 67-69 Z28s did not have bushings with the full floating pins, they had a copper plated bore .
|
|
Keith Coggins 67Rogue X code
|
|
whizkidder
Supporter of TheAMCForum Joined: Mar/03/2008 Location: North Georgia Status: Offline Points: 2972 |
Post Options
Thanks(0)
|
Hmmm... Hadn't thought about that, but certainly possible. The pattern caused by the pins deflecting, or squishing the bottom half of the small end hole? Edited by whizkidder - Feb/06/2013 at 9:11pm |
|
Ron Frost
marne1ancient @ gmail.com 910 nine two two 0563 "There is no limit to what a man can do, so long as he does not care a straw who gets credit for it. Charles Montague |
|
tsanchez
AMC Addicted Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4303 |
Post Options
Thanks(0)
|
Detonation
|
|
whizkidder
Supporter of TheAMCForum Joined: Mar/03/2008 Location: North Georgia Status: Offline Points: 2972 |
Post Options
Thanks(0)
|
Been following this thread with interest. Recently pressed some pins out of stock rods after ~25,000 miles.
There is a definite wear pattern on the bottom part of the pins at the edges of the rod contact - where the small ends of the rod were clearly stretching at TDC on the exhaust stroke. The top 1/2 - 2/3 of the pin did not show as much (or any, in some cases): Interested in thoughts/comments. |
|
Ron Frost
marne1ancient @ gmail.com 910 nine two two 0563 "There is no limit to what a man can do, so long as he does not care a straw who gets credit for it. Charles Montague |
|
Hurst390
AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818 |
Post Options
Thanks(0)
|
Terry Richards never ran bushings in his low 10 sec AMX for years and never had a problem..it's whatever your comfortable with...
|
|
SC/Hurst Rambler
11.62 120 100% Street Legal |
|
74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
Post Options
Thanks(0)
|
Horse a piece for sure. Lets say you dont run a oil hole and you get gauling and sieze the pin in the rod. Then your retention rings would hold anyways. But far before this happened the oil slots for the pin in the piston would allow the pin to turn in the piston like they do with a pressed rod anyways. Do some timeline work and either way it works out. Personally I wouldnt run a floating rod without a bushing for the simple fact that it may not work out or you may never reuse that rod again. If it did and sometimes it does work out then it is again...a horse a piece. If you end up with any gauling you could stress that area and cause a crack in the rod. Its a risk. Again this is IMHO. Edited by 74Bubblefender - Feb/06/2013 at 9:49am |
|
We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
|
Peter Marano
Supporter of TheAMCForum Joined: Jul/01/2007 Location: Kenosha WI Status: Offline Points: 1650 |
Post Options
Thanks(0)
|
Nicely done! If I remember correctly that sliding and the resulting efficiency loss was what Ford was after when they developed the non hypoid spiral bevel 8 inch axle. |
|
Traveller
AMC Addicted Joined: Feb/26/2011 Location: Idaho Status: Offline Points: 1011 |
Post Options
Thanks(0)
|
Actually, it's both. There are both rolling and sliding forces on gears in a transmission. |
|
tsanchez
AMC Addicted Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4303 |
Post Options
Thanks(0)
|
Except diffs lol
|
|
Peter Marano
Supporter of TheAMCForum Joined: Jul/01/2007 Location: Kenosha WI Status: Offline Points: 1650 |
Post Options
Thanks(0)
|
" You can run very hard surface finished steels against other steels, which is why transmisions work"
Please excuse this small point of correction. The contact on a gear tooth face should be rolling not sliding. |
|
Post Reply | Page 123 4> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |