Rear main seal kit RB?
#1241382
05/28/12 10:23 PM
05/28/12 10:23 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
OP
mopar
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OP
mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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Whats the best rear main seal kit out there for a big block? I am so f'ing tired of these mother f'ers leaking I am gonna go insane!! Brand new motor with 4 passes and its leaking! The f'ing girdle is leaking too!
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Rear main seal kit RB?
[Re: 8urvette]
#1241385
05/28/12 11:28 PM
05/28/12 11:28 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
OP
mopar
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OP
mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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Ya I went to there site looking for it. I wonder when it will be for sale??
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Rear main seal kit RB?
[Re: 8urvette]
#1241387
05/29/12 03:35 AM
05/29/12 03:35 AM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Having trouble with one on a stock B engine as well. Going to change out in a week or two.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Rear main seal kit RB?
[Re: rebel]
#1241390
05/29/12 08:47 PM
05/29/12 08:47 PM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
OP
mopar
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OP
mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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Quote:
fit a vac pump, problem solved 
I probably will need one of those too!! Just trying to figure out a low buck way to do it. Cant do the 900 bucks for one right now!
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Rear main seal kit RB?
[Re: herkamer]
#1241392
05/30/12 12:48 PM
05/30/12 12:48 PM
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Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426
I Live Here
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I Live Here
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
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Quote:
Quote:
hughes engines will be selling a 1 piece main seal soon.
Called this morning, 6-8 weeks is the expected delivery.
So is this a cut circle and you wind it in?
Curious on this one...
OK, just checked it out on their site, Looks like quite a deal there.
If its sucessfull Ill buy one for the 440 for sure....
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Re: Rear main seal kit RB?
[Re: HOTMOPR]
#1241393
05/30/12 03:09 PM
05/30/12 03:09 PM
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Joined: Aug 2003
Posts: 43,198
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,198
Bend,OR USA
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I bought several,12, Federal Mogul rear main seal kits with the newer grey side seals, I fill the main seal holder edges to the block up with clear adhesive silicone and let it dry overnight before using them. I force the silicone into the bottom edges to the block also with a small flat screwdriver that fits bewteen the crankshaft flange and the block. I'll try posting a picture of it, hopefully that will help 
Last edited by Cab_Burge; 05/30/12 03:11 PM.
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Re: Rear main seal kit RB?
[Re: HPMike]
#1241395
06/24/12 12:30 PM
06/24/12 12:30 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
I wouldn't get too excited about the so called "one piece" rear main seal. The problem isnt usually the parting points of the seal. In many cases its a poor finish of the seal surface on the Chinese stroker cranks. Also, AND THIS IS VERY IMPORTANT. If you are using tne replacement billet seal retainers cut some grooves in the retainer so that the oil can successfully drain back to the pan. If you install them you will see that the retainer winds up "shrouding" the #5 main cap and wont allow the oil to drain quickly back to the sump. The retainer that Best Machine sells is properly relieved to avoid this problem.
Also, the brown/orange "fluoroelastoimer" seal is the one to use. Its pricy at about 25 bucks, but I get no problems with this seal. Also, it should be a common practice by now to have a Chinese crank checked and corrected by a competent crank grinder before putting into use. Also ask the crank guy to check the rms surface. I usually have .005 cut off which tones down the heavy knurl they put into the rms surface.
MB
I used the orange "fluoroelastoimer" seal and so far it seems to be working well. The side seals take some time to "work" them into place. Use some silicone spray or WD-40 to lube the side seals, then have to raise-lower the seal retainer while pushing the side seals to work them down to the block surface.
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Re: Rear main seal kit RB?
[Re: 451Mopar]
#1241396
06/24/12 12:45 PM
06/24/12 12:45 PM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
Quote:
I wouldn't get too excited about the so called "one piece" rear main seal. The problem isnt usually the parting points of the seal. In many cases its a poor finish of the seal surface on the Chinese stroker cranks. Also, AND THIS IS VERY IMPORTANT. If you are using tne replacement billet seal retainers cut some grooves in the retainer so that the oil can successfully drain back to the pan. If you install them you will see that the retainer winds up "shrouding" the #5 main cap and wont allow the oil to drain quickly back to the sump. The retainer that Best Machine sells is properly relieved to avoid this problem.
Also, the brown/orange "fluoroelastoimer" seal is the one to use. Its pricy at about 25 bucks, but I get no problems with this seal. Also, it should be a common practice by now to have a Chinese crank checked and corrected by a competent crank grinder before putting into use. Also ask the crank guy to check the rms surface. I usually have .005 cut off which tones down the heavy knurl they put into the rms surface.
MB
I used the orange "fluoroelastoimer" seal and so far it seems to be working well. The side seals take some time to "work" them into place. Use some silicone spray or WD-40 to lube the side seals, then have to raise-lower the seal retainer while pushing the side seals to work them down to the block surface.
Glad that worked 
Its the only one I use at this point...
MB
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