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            By Tim Quinn - 7 Years Ago				
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            Have a billet rear main bearing cap. Tried Chrysler seals, no luck. Engine: '57 312 Do any of you know the secret to stop this billet cap from leaking ? Tim in Florida
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            By oldcarmark - 7 Years Ago				
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            Click on "Links" at top of Page. Go to Ted Eaton Balancing. He has a list of Technical Article.One is for rear main Seal on 312. There is a good Seal sold by "Best" which apparently when properly installed works well  in most Cases.
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            By Tim Quinn - 7 Years Ago				
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            Thanks, Just got off the phone with a BESTgasket distributor and he helped. Again, THANKS !!, Tim in florida
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            By oldcarmark - 7 Years Ago				
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            Good. I would still print off Ted's Article for Reference because He has a Couple of Tips to improve the chances of success even using Best Seals. I used it when I replaced the Seal in my 292 that leaked from the start after I rebuilt it. Seems to have solved my problem.
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            By Tim Quinn - 7 Years Ago				
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            Will read the topics again, they are good info. Thanks again for your input. Tim in Florida
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            By Cliff - 7 Years Ago				
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            I use the Chrysler seal on all 312's and the stock retainer (over 20 years) with no problems, I think most leaks are from the pan where it covers the oil seal retainer, I always use studs in the retainer and put sealer on top of the retainer bolt heads.
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            By Tim Quinn - 7 Years Ago				
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            Are using a billet cap on the 312's ? We have a billet aluminum cap and tried BESTgasket's seal but it failed. Tim in Florida
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            By PF Arcand - 7 Years Ago				
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            ,Apparently the  "early" Best seal, which I believe is the Red seal (I may be corrected on that information ?) does not work well, however their later Black seal works well. However, the installation is tricky & needs to be followed properly or a leak will result. See Ted Eatons instructions (link to Eaton Balancing from here).  Another place that can appear to be a seal leak is the rear camshaft plug, which will leak if not sealed properly when installed & it needs to be installed with some clearance to the Cam. See also info on that from Eaton..   N.B.- edit; see below, I'm corrected by Miker, the bad seal is an "orange color" not Red. - Thanks        
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            By miker - 7 Years Ago				
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            They were actually an “orange” seal, and very easy to spot.  They were a softer silicone I think, and often failed in 500 miles.  I had one in my 312, and it didn’t make it that far.  I replaced it with the current Best black seal, which I think is neoprene.  So far so good, but I haven’t gone that far.
  We followed all Ted’s instructions carefully, double checked everything, so I hope it’s solved.  The other culprits were eliminated as possible leaks, so I know it was that orange seal.
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            By Cliff - 7 Years Ago				
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            I only use the Ford retainer, the Chrysler seal in my Bird I installed in 1995, still good.
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            By Tim Quinn - 7 Years Ago				
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            Thanks for the reply. See that you were taught by the same Priests that taught me to use the Nota Bene , Latin for "Note Well" when an important matter is evident.
  
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            By Tim Quinn - 7 Years Ago				
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            We found an original Ford retainer cap and are using a Chrysler seal. Thanks, Tim,FFF (Florida Ford Fan)
  
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            By Tim Quinn - 7 Years Ago				
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            Thanks to all who contributed . Tim, FLORIDA FORD FAN
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