rear main seal

[pokethesmot]

i have to replace my rear main seal no question about it but what all do i need to replace it like tools and has any one done a write up or seen a good one i have a sbc 400 and i cant take the engine out

[slugish]

Ireally should do the same thing . mt 2 pc seal on my 400 has leaked ever since engine was built > garage floor looks like a grease pit <

would be interested inany advice on how this is done as well

[pokethesmot]

bump

[heavychevy79]

Linky---> http://www.hotrodders.com/forum/repl...bc-141363.html

[pokethesmot]

i called advance and they said they had a rear main seal with a lip for 7.99 and one thats offset for 9.99 for my 74 sbc 400 whitch one do i need

[dammitmitchell]

dude you gotta score yourself a chiltons boo =-)
they are a huuuge helper.. and you'll be surprised how easy all thsi stuff is..
and if it is a two peice you can do it in under an hour.. maby three if you are drinking...
just remember to not nick the seal use the little plastic thingy they have in the kit..

[pokethesmot]

well i mounted a cb in my dash today dint get around to doin the seal but ima get at it first thing in the morning ad i know i wish i had one of them books

[monique111]

The books are a great investment. The one I use is every machanics dream. It has every engine and trans including all the specs and its ability to be converted from 64 - 71. They Have them for all different years and motors. I would suggest looking on Ebay. I have done the one on my 76 K-20 and it wasn't hard at all. The biggest thing was to let the seal warm up in the sun for about 30 min to an hour, it makes it much easier to work with. Hope that provided a little help

[pokethesmot]

well ive started it already i bought the torque wrench the seals and the rtv and i just got done dropping the oil pan and man ile tell ya what that's allot of bolts and also i love gojo to death it gets off oil so well lol

[monique111]

I use fast orange it seems to work the best for me. Which torque did you get per inch or per foot. You'll most likely need both since the seal is torqued per inch.

[pokethesmot]

Originally Posted by monique111

I use fast orange it seems to work the best for me. Which torque did you get per inch or per foot. You'll most likely need both since the seal is torqued per inch.

i have bottle of fast orange too it just smells too much of oragnes but it works purity darn good too i use it for when i get gas on my hands and i have one for foot pounds

[LONGHAIR]

Originally Posted by monique111

Which torque did you get per inch or per foot. You'll most likely need both since the seal is torqued per inch.

What does that mean? The rear main seal is inside the block and rear main bearing cap.....which it definately a "foot-pound" torque situation. The main cap bolts are some of the most highly torqued in the entire engine.

[msgross]

I just changed one in a 2WD..

1. unbolt the motor mounts
2. jack the engine up 3" (might need to pull the distributor)
3. drain engine oil
4. unbolt oil pan and remove (jack a little more if needed)
5. pull oil pump (1 bolt)
6. unbolt rear main cap for crankshaft
7. half of the seal is in the cap, remove and replace (don't put it in backwards... big lip on seal points forward)
8. use a brass punch and rotate the other half out from around the crank, once it's started then pliers will pull it out...
9. Use plastic protector piece and reinstall half of the seal
10. replace cap and torque
11. replace oil pump with new plastic sleeve for distributor slot
12. replace oil pan gasket if needed
13. replace oil pan
14. lower engine and bolt in the motor mounts
15, replace engine oil...

that's all!

of course a Haynes manual from autozone will help...

good luck, not that hard but it's messy and takes about 2 hours...

[pokethesmot]

i found all kinda of junk inside my oul pickup i cleaned it all out thoe

[roofing458]

I had a old F800 ford roofing truck that rear main leaked so bad it started on FIRE after hit the exhaust The boys put out the fire & rigged a 2 ft piece of gutter alter the flow of earl .We are now selling a gutter kit for leaky rear main seals or we have franchises for sale Be your own boss Sell LEAKY REAR MAIN Gutter systems ……lol

[msgross]

Originally Posted by roofing458

I had a old F800 ford roofing truck that rear main leaked so bad it started on FIRE after hit the exhaust The boys put out the fire & rigged a 2 ft piece of gutter alter the flow of earl .We are now selling a gutter kit for leaky rear main seals or we have franchises for sale Be your own boss Sell LEAKY REAR MAIN Gutter systems ……lol

You should have made it have a sump and recirculate the oil back into the valve cover!!! that would be slick...

[pokethesmot]

ok i got the half of the seal out and the new one in on the bottom part but i just cant seem to get the seal for the top part out...any tips

[pokethesmot]

ok i got the new seals in i just need to get the new oil pan gasket and bolt everything back up but im calling it quites for tonight im tired and cover in oil lol

[msgross]

My haynes manual suggest to leave the seal "off centered" with the cap... basically don't line it up flush like original.. move it a little further so the gaps don't line up... It's just a suggestion, sorry it's late though!

[pokethesmot]

well i don't think advance is open today so im just gunna make a seal but i need to start putin stuff back together right now

[dammitmitchell]

make a seal? dudeeee... just leave the truck apart and grab the parts tomorrow...
there isnt a way to "make a seal" back there.. just replace it... =-)

[dammitmitchell]

wait.. are you talking abou the oil pan gasket?
its you have the rubber one it's reuseable..

[pokethesmot]

ok advance was open i got the right seal ive put everything back together added some new oil(20w 50) and now nuthing is leaking im so happy

[msgross]

nice to hear... tough job but the parts are cheap...

[dammitmitchell]

yeah cheaper then some of my girlfriends. hehehehhe
wait.. ... oh man..