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Crankshaft rear main seal leaking
Posted: Mon Apr 20, 15 6:00 pm
by JerryL
Having rebuilt, installed and run my engine.......
http://www.moparuk.com/forums/viewtopic ... facel+vega
http://www.moparuk.com/forums/viewtopic ... facel+vega
........ I have a leak from the rear main seal 'cos I probably did a crap job of trying to seal the sides of the retainer with silicone and pipe cleaners.
Now I have to pull the engine again 'cos I can't stand puddles on the floor.
My brother-in-law with lots of experience in industrial vehicle maintenance recons I should do away with silicone and use Indian Head Shellac instead.
What do you recon?
Posted: Mon Apr 20, 15 7:04 pm
by Pete
DaveB is the mainseal king. I would take his advice........
I am not convinced they leak from the sides of the retainer, we used a mirror on the last leak and it appears to come from the 6 o'clock position on the retainer..........
Posted: Mon Apr 20, 15 11:54 pm
by BJ Mac
I agree with Pete, if Dave B gave me any advice I'd take it as Gospel

Posted: Tue Apr 21, 15 3:42 am
by Pete
Alternatively if you are in Northants,give it to Hauser Racing in Finedon, and say "Please Fix!!"
http://www.hauserracing.com/
Posted: Tue Apr 21, 15 10:21 am
by JerryL
Pete wrote:DaveB is the mainseal king. I would take his advice........
I am not convinced they leak from the sides of the retainer, we used a mirror on the last leak and it appears to come from the 6 o'clock position on the retainer..........
Well, yes. I accept Dave's advice is good but it does not mean I did an adequate job of sealing the retainer
So Pete, what does it mean by "appears to come form the 6 o'clock position"? How is the oil getting by? Is that past the journal seal rather than the side seals of the retainer?
Anyway, how could you see it?
I will give Hauser a ring. Ta for the advices.
Posted: Tue Apr 21, 15 10:31 am
by Pete
Posted: Tue Apr 21, 15 1:18 pm
by JerryL
A great big Thank You, Pete.
I have been along to Hauser. Not sure who I saw/talked with there, possibly not Geof but got a proper set of Mopar seals and good advice how to fit them. His opinion of the pipe cleaner seals was not high.
I was advised on how to fit these seals and also engine lubrication, so got some Zinc additive too.
So I'm going to drip oil all over the place on Drive-it Day, then pull the engine and fit new seals.
Cheers all.

Posted: Tue Apr 21, 15 2:32 pm
by Pete
You are welcome.
If it was a huge bloke it was Ian, if it was a small bloke it was Geof...
Posted: Tue Apr 21, 15 6:55 pm
by JerryL
Pete wrote:You are welcome.
If it was a huge bloke it was Ian, if it was a small bloke it was Geof...
He were BIIIG

Posted: Tue Apr 21, 15 11:07 pm
by Ed
I am just about to start building my 440 and was wondering why the gasket set doesn't have the 2 side seals for the rear main seal housing..
Did Hausers Keep the seal kit in stock?
Im wondering if I should get a good one in there now before I get too far on with the build..
I see you live in Gretton, I live in Ketton and work in Uppingham.
Its a small big block world!
Posted: Tue Apr 21, 15 11:09 pm
by Pete
You have to buy the real seal set separately..
Posted: Wed Apr 22, 15 9:50 am
by JerryL
Ed wrote:I am just about to start building my 440 and was wondering why the gasket set doesn't have the 2 side seals for the rear main seal housing..
Did Hausers Keep the seal kit in stock?
Im wondering if I should get a good one in there now before I get too far on with the build..
I see you live in Gretton, I live in Ketton and work in Uppingham.
Its a small big block world!
Yes, Hauser has the Mopar seal set for the rear main seal in stock - but give 'em a ring. Don't know if I took the last one or not. Definitely a better option than the pipe cleaner/silicone method. It was impressed on me to carefully degrease the joint surfaces before fitting and to use just a smear of silicone to act as a lubricant as you push the seal housing into place. The side seals to be installed with a few mm (5/6) sticking out the bottom and fingers over the top as you Bananarama! down to ensure it runs top to bottom.
We come through Ketton from time to time on visits to Stamford/Burghley. Often in Uppingham.

Posted: Mon May 04, 15 8:08 am
by JerryL
Well, turns out Dave's advice on fitting those pipe cleaner seals was good and I actually did a good job
Turned out (as I was preparing to lift the lump out) that the inside of the bell housing was dry and all the oil was coming from the rocker covers
Although I used RTV on the gaskets, maybe I did not tighten the covers down enough.
I made load spreaders for the bolts and fitted new gaskets with RTV and screwed 'em down tight. Hope that works properly now

Posted: Mon May 04, 15 8:25 am
by terryr
Posted: Mon May 04, 15 9:57 am
by Pete
That is a definite "Doh!!" and a learning point.
I am sure all that work is good for the soul............
