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SPUN BEARINGS #1035939 07/19/11 02:29 PM 07/19/11 02:29 PM
Joined: Dec 2008 Posts: 52 detroit mich S stevehiss OP member
stevehiss OP member S Joined: Dec 2008 Posts: 52 detroit mich	i spun a bearing ,can the rod be resized or is it junk, it doesn't look black but it did get warm I DARE TO BE DIFFERENT

Re: SPUN BEARINGS [Re: stevehiss] #1035940 07/19/11 02:35 PM 07/19/11 02:35 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	check that thing with a fine tooth comb- everything. by everything, i mean the whole engine. top to bottommus. the rod will probably need to be resized. replace the bolts, and maybe the rods themselves. find out whahappen, and make it good! for what is the good life if not doing things thoughtfully?

Re: SPUN BEARINGS [Re: stevehiss] #1035941 07/19/11 04:35 PM 07/19/11 04:35 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: i spun a bearing ,can the rod be resized or is it junk, it doesn't look black but it did get warm What brand rod

Re: SPUN BEARINGS [Re: stevehiss] #1035942 07/19/11 05:49 PM 07/19/11 05:49 PM
Joined: Aug 2006 Posts: 614 Michigan G Get-X mopar
Get-X mopar G Joined: Aug 2006 Posts: 614 Michigan	Quote: i spun a bearing ,can the rod be resized or is it junk, it doesn't look black but it did get warm If it discolored at all and requires resizing I persomally won't reuse them. A single rod doesn't cost that much to replace, no matter which rods you have. Just my , your mileage may vary. '65 Belvedere '68 GTX '57 Dodge pickup

Re: SPUN BEARINGS [Re: stevehiss] #1035943 07/19/11 06:03 PM 07/19/11 06:03 PM
Joined: Nov 2004 Posts: 3,543 Syracuse,NY CompWedgeEngines master
CompWedgeEngines master Joined: Nov 2004 Posts: 3,543 Syracuse,NY	I will very rarely re-use a rod that has a spun bearing, even though it may look reconditionable. Can it be done? I suppose. Should it be done? No. As an example, often times when a rod or main spins on a crankshaft, it almost always induces enough heat to actually bend the crankshaft. It is often common to check a crank after either one of these failures and find from .003 - .006 runout or bend in the crank, and you can look at the crank and think it could have hardly been damaged. If its a stock rod, then I definately would NOT re-use it. An aftermarket Hbeam, well, much better chance, but you'll need to pull the dowel sleeves, re-size it and check the rod on a Sunnen or similar rod straightener for bend and twist.... RIP Monte Smith Your work is a reflection of yourself, autograph it with quality. WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Re: SPUN BEARINGS [Re: CompWedgeEngines] #1035944 07/19/11 06:38 PM 07/19/11 06:38 PM
Joined: Sep 2005 Posts: 2,442 LOWELL IN Q QWK_ENUF top fuel
QWK_ENUF top fuel Q Joined: Sep 2005 Posts: 2,442 LOWELL IN	i also have a spun bearing in my motor. it was perfect until my ring gear came apart. when we repaired the convertor and replaced the trans case i had low oil pressure. found #3 rod bearing bad and all my mains to the copper. i have elgin h-beams and are not made any more. problem is my motor is balanced with 835 gram rods and the heaviest ones i can find are at least 780 grams or lighter. so what are my options other than resizing my rod or replacing all rods and rebalancing 6737217-app_full_proxy.jpg (82 downloads) WAXER

Re: SPUN BEARINGS [Re: stevehiss] #1035945 07/20/11 03:17 AM 07/20/11 03:17 AM
Joined: Aug 2003 Posts: 42,179 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 42,179 Bend,OR USA	Quote: i spun a bearing ,can the rod be resized or is it junk, it doesn't look black but it did get warm I have had spun rods magged, resized and I reused them, that was a long time ago when racing money was really tight, houes payments, two kids in a christain school on a single income. I wouldn't do that now because to do it right you need to get the other seven resized so you can get the rod lengths within .002 of each other i have sen stock rods vary .008 in lengths in the same motors, must have been Monday or Friday motors don't forget that the heat treat is toast also so throw that expence into the decision making process BTW, what type and brand rod? Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: SPUN BEARINGS [Re: Cab_Burge] #1035946 07/20/11 10:57 AM 07/20/11 10:57 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Don't mean to hi-jack, but what does everyone think are the most common causes of spun bearings? Fastest 300

Re: SPUN BEARINGS [Re: Crizila] #1035947 07/20/11 11:42 AM 07/20/11 11:42 AM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	improper crush, rod bolt issues, or lubrication. beyond that could be anything. for what is the good life if not doing things thoughtfully?

Re: SPUN BEARINGS [Re: maximum entropy] #1035948 07/20/11 01:17 PM 07/20/11 01:17 PM
Joined: Jan 2003 Posts: 16,375 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,375	detonation ruptures the oil film and allows the vearing and crank to touch. R.

Re: SPUN BEARINGS [Re: dogdays] #1035949 07/20/11 01:19 PM 07/20/11 01:19 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: detonation ruptures the oil film and allows the vearing and crank to touch. R. on rod bearings.

Re: SPUN BEARINGS [Re: Crizila] #1035950 07/20/11 01:30 PM 07/20/11 01:30 PM
Joined: Nov 2009 Posts: 2,177 ill D dennismopar73 top fuel
dennismopar73 top fuel D Joined: Nov 2009 Posts: 2,177 ill	lack of lubrication, / wrong size

Re: SPUN BEARINGS [Re: Crizila] #1035951 07/20/11 02:29 PM 07/20/11 02:29 PM
Joined: Aug 2003 Posts: 42,179 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 42,179 Bend,OR USA	Debis, rod elongation, improper fit of the bearing, to tight of clearnances, revving the motor to high on start up when cold before having oil pressure, same thing when hot, to thick of oil, the list is endless On clearances looser is better, cleanleaness is next to Godleaness when assembling motors, you can not keep them too clean Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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