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440 source bears off
#1954384
11/19/15 05:14 PM
11/19/15 05:14 PM
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Joined: Jan 2003
Posts: 516
,Pa.
68dodge
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 516
,Pa.
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Received my 512 stroker kit. Found out the main bearings are .004 clearance, not good in my book. Call 440 source. You think they would check them, they told me now I have to get a hold clevite and deal with them.
Last edited by 68dodge; 11/19/15 05:15 PM.
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Re: 440 source bears off
[Re: FastmOp]
#1954439
11/19/15 07:06 PM
11/19/15 07:06 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Exactly.............seen WAY more on record setting Pettis motors.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: 440 source bears off
[Re: 68dodge]
#1954449
11/19/15 07:29 PM
11/19/15 07:29 PM
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Joined: Dec 2005
Posts: 11,497
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,497
Fulton County, PA
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I'm also curious as to how you determined what the clearance is. Obviously parts have to be measured to figure that out. I wouldn't be afraid of .004. Is that what the 440 source said the crank is sized for? Bearings packaged wrong? No other explanation from them other than "Call Clevite"?
If the results don't match the theory, change the theory.
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Re: 440 source bears off
[Re: CMcAllister]
#1954484
11/19/15 08:51 PM
11/19/15 08:51 PM
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Joined: Oct 2005
Posts: 8,853
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,853
Ontario, Canada
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Received my 512 stroker kit. Found out the main bearings are .004 clearance, not good in my book. I'll give ya $100. for the kit ... CASH. I'll even come and pick it up.
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Re: 440 source bears off
[Re: Monte_Smith]
#1954495
11/19/15 09:03 PM
11/19/15 09:03 PM
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Joined: Mar 2006
Posts: 9,815
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,815
MI, usa
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Simple, measure the CRANK. If the crank is within spec, this is not 440 Sources issue. And HOW would they check clearance......they don't have your block.
NOT that I am in any way shape or form, a 440 Source supporter, but how about finding out WHAT the problem is before casting aspersions.
I also agree with above.....004 is NOT too much I agree as well. Bearing clearance is dictated by bearing bore housing dimension, bearing thickness and journal diameter. Doug
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Re: 440 source bears off
[Re: lewtot184]
#1954514
11/19/15 09:35 PM
11/19/15 09:35 PM
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Joined: Aug 2003
Posts: 43,097
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,097
Bend,OR USA
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check the main bores with a dial bore gauge to make sure they're per spec and especially not out of round. the vertical measurement on the last two blocks i checked was awful, the horizontal was in spec; basically egg shaped bores. this will screw up bearing clearance.  Identify the problem accurately first before trying to correct it  Take the block (and crank)to a good machine shop if you don't have access to a good dial bore gauge and outside micrometer  I agree with all the other posts about having .004 crank to bearing clearances dry is way better than having .0027 or less dry same thing on the rod clarnaces, a little looser will last a lot longer than a tiny bit to tight will 
Last edited by Cab_Burge; 11/19/15 09:38 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 440 source bears off
[Re: 68dodge]
#1954582
11/19/15 11:29 PM
11/19/15 11:29 PM
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crabman173
Unregistered
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crabman173
Unregistered
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I for one am GLAD that Source cranks seem to be on the low side--You should be happy--FWIW I am just about done with Clevite--King is the Daddy--and the new "black " bearing they have come out with is the best yet!
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Re: 440 source bears off
[Re: 68dodge]
#1954611
11/20/15 12:01 AM
11/20/15 12:01 AM
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Joined: Jun 2008
Posts: 3,916
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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another thing to try is measuring the thickness of the bearing shells and see if it matches clevite's spec. also, the bearing bores must be measured vertical and horizontal.
Last edited by lewtot184; 11/20/15 12:02 AM.
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Re: 440 source bears off
[Re: ]
#1954634
11/20/15 12:21 AM
11/20/15 12:21 AM
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Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
slammedR/T
super stock
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super stock
Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
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I for one am GLAD that Source cranks seem to be on the low side--You should be happy--FWIW I am just about done with Clevite--King is the Daddy--and the new "black " bearing they have come out with is the best yet!
I like the aluminum based bearings they had better, the "new black" bearings seem to old school babbit again... With that said I still love King bearings and will continue to use them in all my builds.
Last edited by slammedR/T; 11/20/15 12:22 AM.
2000 Dakota R/T, 408 magnum, 727, Indy heads 1000cfm 4150 carb, 93 octane fuel. motor; 10.258 @ 132.78 200 shot; 9.262 @ 144.69 racemagnum
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Re: 440 source bears off
[Re: 68dodge]
#1954674
11/20/15 01:09 AM
11/20/15 01:09 AM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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check the main bores with a dial bore gauge to make sure they're per spec and especially not out of round. the vertical measurement on the last two blocks i checked was awful, the horizontal was in spec; basically egg shaped bores. this will screw up bearing clearance. Identify the problem accurately first before trying to correct it Take the block (and crank)to a good machine shop if you don't have access to a good dial bore gauge and outside micrometer I agree with all the other posts about having .004 crank to bearing clearances dry is way better than having .0027 or less dry same thing on the rod clarnaces, a little looser will last a lot longer than a tiny bit to tight will Took the block and rotating assembly to a machine shop. Block was line bored. They found the same thing, I would like to have.027 clearance than .004. WHY?.........that's too tight for anything other than a stock rebuild and I personally wouldn't even do one of those that tight
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