Engine New Rear Main Seal leaks

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
36,114
12,035
224
Massachusetts
Just a 4" threaded pipe plug from the plumbing aisle of home depot. Worked quite well at tapping the seal in.
 
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silverlx50

Active Member
Apr 4, 2007
144
55
38
Has anyone used any type of sealant around the outer seal lip? Turns out my new seal was leaking along the bottom outer lip.
Yes. Ran RTV around the lip and pressed it in. I went through probably 3 RMS that all leaked, this last time with thread seller, not loctite, on flywheel bolts and rtv around the RMS lip, so far no leaks!

(Newer motor, crack looked fine so I didn't use a sleeve)
 

Rdub6

So while I wait to figure out my rear end issues
Dec 29, 2017
2,436
1,785
133
Long Island, NY
Oh..and my install tool. Lines up perfectly

8E075AC2-5355-4746-89F7-F0978CEB9078.jpeg
I have a transmission seal driver that looks just like that, only smaller!
 
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TuFun

Females affect them in a very negative way O_o
Jan 9, 2019
53
55
28
California
Lucky you guys... I have the half rope/rubber seal 5.0 and not taking the engine out for that. I don't push it so leaks are small.
 

Specracer

Member
Nov 24, 2020
38
16
18
51
SE MA
Yes. Ran RTV around the lip and pressed it in. I went through probably 3 RMS that all leaked, this last time with thread seller, not loctite, on flywheel bolts and rtv around the RMS lip, so far no leaks!

This, and for the RTV, I used would call a "stain" of RTV, vs a bead (very little).
 
D

Deleted member 215073

My car is also leaking through the bolt holes. I followed the directions with the new ARP flywheel bolts and used loctite on the threads and the supplied grease on the bolt head to ensure proper torque. :cautious:
 

nickyb

WAIT,you now have a pair?
10 Year Member
Apr 3, 2009
1,005
447
113
58
nevada
My car is also leaking through the bolt holes. I followed the directions with the new ARP flywheel bolts and used loctite on the threads and the supplied grease on the bolt head to ensure proper torque. :cautious:

It's leaking because those bolts go threw to the crank case where they get soaked with oil. They need thread sealant, ask me how I know.
 

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D

Deleted member 215073

I know, I saw this thread and went out to look at my car and it's leaking.

I found my fuel tank filler grommet is leaking too, and I have a split exhaust pipe just in front of the right side muffler that is approximately 12" long.

More projects...
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
19,872
6,677
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polk county florida
I know, I saw this thread and went out to look at my car and it's leaking.

I found my fuel tank filler grommet is leaking too, and I have a split exhaust pipe just in front of the right side muffler that is approximately 12" long.

More projects...
Don't you know to stop looking? I just regret tearing mine apart (not really) the list out grew the budget.
Stop looking.
 

Potomus Pete

Gretchen Whitmer is eating at me
Mar 7, 2019
2,146
752
133
57
Sarasota Florida
Well, this could be the end of the rear main seal problems. I am sick of mine. My clutch is spoolin more than ever these days. How come JmGlasgow is deleted