We used the new teflon type rope seals on a new motor with about 100 miles on it. Nice drip which runs down the oil pan front and no leaks elsewhere. It was put in according to all posted info. and greased very slightly. The leak is blackish oil. Is this normal with this type of seal. We ran out of the old style rope and the 2 piece pulley looks ok. Any suggestions ?
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Front pulley seal, new motor
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Had other thoughts ; has anyone tried the Best Gasket graphite rope seal ? Also, we've used Speedi Sleeve on other projects to build up worn shafts and not sure that would work instead of replacing the pulley which cost wise is about the same price.
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I know Best makes a good product so i would research their rope seal. I don't have any experience with those but i would do the new pulley VS a sleeve.3~ Tudor's & 1~ Coupe
Henry Ford said,
"It's all nuts and bolts"
"Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
Mitch's Auto Service ctr
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Originally posted by plyfor View PostWe used the new teflon type rope seals on a new motor with about 100 miles on it. Nice drip which runs down the oil pan front and no leaks elsewhere. It was put in according to all posted info. and greased very slightly. The leak is blackish oil. Is this normal with this type of seal. We ran out of the old style rope and the 2 piece pulley looks ok. Any suggestions ?
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I have not found the 'rope' seals of the last 15 years to be any where near as good at sealing as they were 30 yrs ago. I used to have to really work to get the timing cover down over the seal; no longer. I think they are being cut too short.
I have been putting a layer of 1/16" gasket material behind the rope seal, to beef up the diameter a bit
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tbird you are correct; the asbestos was in the "old" rope seals and that's why they're no longer available. Out teflon seals were a little over size and sealed with permatex (no rtv) at the end mating surfaces and fit snug. We barely could get the timing cover on due to no give in the teflon. I 'm now thinking the teflon is perhaps too slick and doesn't have any grip at the pulley. The modern seal that was installed by prior folks wouldn't seal either. But we may have to go to a new pulley, polished and/ or the sleeves. The Dura sleeves are chrome alloy and the speedi sleeves are stainless I believe.
Some vendors have a screw- in 2 piece in their catalogues and a slot type fit which not sure which is preferred. Some used to cut a groove in the pulley to force the oil back but not sure about that with the teflon type. I checked with Best gasket today and they supply the teflon in their kits for the front, not the black graphite type.
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For the modern seals, if they are 2 piece (inner core), supposedly oil can get by the inner portion, so some suggest applying silicon sealant inside and reinstalling the core. Then bed the total seal in silcone (not rtv)in the timing cover, oil pan grooves. Any one tried this?
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Got call a from the Model A shop. They informed me progress of my A, rebuilt motor and lots of other things are basically done. So now once weather gets warmer, I will be going there to drive it around for a couple of hours as shake down so they can correct any concerns I may have before taking it home. They informed me that a rope seal had a little seepage, but since it has been so cold they have...
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by OTTAWAEDI am having constant problems with leaking front seals. Are the currently-available non-asbestos half-seals undersized? Am considering using the "modern" seal. I assume that I do NOT have to remove the oil pan, although of course the timing cover and pulley have to come out. Am I correct? Ed
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Which is better...The Front Crankshaft "teflon coated rubber rope" packing...OR this new Front Crankshaft "one piece nitrile seal"?
I have always used the rope in the past.
Thanks.
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by dmdeatonFrom Stipes, anyone use these? Do they hold up?
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by GARY FRANKIs there anything I can add to the crankcase to make the "rope" seal swell? I went by the book and used a complete engine gasket seal kit and there is oil slinging off of the front of the exposed crank between the damper and the timing case. I only have 400 miles over 3 years on it.
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How close should I trim a front rope seal? I usually use one piece seals.
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by BNCHIEFIn researching rope seals the new ones are teflon and supposedly not very good, best gasket make a new graphite impregnated seal they claim does work, any body use it and where do you get it best part number is 2026
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by plyforFound this photo on the net of a modern type seal. Just found out it is a modern seal with an alum. outer jacket sold by Specialty Motor Cam ( replacement shocks, etc.)....
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