Rear Main Seal OEM or Felpro

strutaeng said:

There are no dumb questions, Brother.

That's a good question, actually. Now, assuming you remove only the round seal that goes around the crankshaft flange, then you don't need to center the metal cover. You would just leave the metal-clad gasket behind the cover untouched.

I think the issue is that the crankshaft flange seal itself is not rigid enough to center the rear cover. It is pliable so it will conform if it's not centered correctly.

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viven44 said:

Ok I was wondering, why would it be necessary to remove the metal cover if you are only doing the RMS. Is the metal cover containing oil pressure ?Again, I have no idea what the purpose of the metal cover is… just trying to understand (I’m used to the old big blocks with 2 piece RMS that can be changed by dropping the oil pan or a 1 piece seal that just goes around the crank flange and the engine block)

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strutaeng said:

When you purchase the RMS, it comes with both the cover gasket and the round crankshaft flange seal. The rear cover serves to also retain the oil diverter barbell.

I would imagine you would want to install both new seals at the same time, no? Good for another 200k or whatever they are good for.

I never considered not replacing the cover gasket when I did that job. But I guess there's nothing that says you have to replace it? IDK.

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viven44 said:

No problems. I’m convinced this tool is needed. When they transitioned to 1 piece rear main seals, the seal design became more durable but the difficulty of replacement also increased. So I’d definitely want to be equipped with all the arsenal!!

Well if/when I may do this job (hopefully on another truck in the future!!), you are in Dallas, I’ll reach out!

My tolerance level is also higher. I’m used to topping off engine oil after a long round trip on my “steel trucks”, ha ha

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strutaeng said:

Oh yeah, I forgot we are local to each other. No problem.

I bought the SacCity version when I did the RMS on my truck 2 years ago, then this Spring I pulled the engine for a refresh. I bought an Amazon front alignment tool that has both front and rear. That one is just a solid aluminum piece. Both work fine. Admittedly, I actually reused the RMS on the engine, since it was kinda newish. LoL

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viven44 said:

No problems. I’m convinced this tool is needed. When they transitioned to 1 piece rear main seals, the seal design became more durable but the difficulty of replacement also increased. So I’d definitely want to be equipped with all the arsenal!!

Well if/when I may do this job (hopefully on another truck in the future!!), you are in Dallas, I’ll reach out!

My tolerance level is also higher. I’m used to topping off engine oil after a long round trip on my “steel trucks”, ha ha

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S33k3r said:

Where are you guys located, if you do not mind me asking? I am in Dallas, Texas too!

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strutaeng said:

I'm in SW Dallas in Oak Cliff, not far from Mt. View College/Loop 12...In the hood.

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viven44 said:

That's really proximate to Summit Racing and Copart.
I'm in North Dallas, specifically Richardson

Y'all hit me up if there are any truck/car meets...

Where in Dallas are you @S33k3r ?

Really hope OP doesn't mind his thread getting hijacked!! Is that pretty common around here ? I'm on another classic bullnose Ford forum and that is a common occurrence

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strutaeng said:

This is how I do it:

I bought that tool as well.

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