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Blew my rear main seal twice in two days!

Old May 23, 2013 | 08:33 PM
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Default Blew my rear main seal twice in two days!

Hey guys there's something definitely wrong with my pcv routing with the tvs2300.. i will try to explain what i had and have the best i can i can't draw diagrams pretty well..

so first setup was

blower inlet port to catch can, catch can to a T junction going to both driver and passenger side valve covers and a breather on the oil fill. this setup worked great until i started running 14 psi

replaced the rear main seal then changed things around a little bit but still blew it after 1 wot run from 0-130

current setup

blower inlet port to catch can, catch can to driver side. passenger side inlet is capped with a breather on the oil fill.


3rd times a charm lets hope so

a friend of mine told me to remove the catch can.. run a line from the blower to the driver side, and a line from the passenger side to the intake tube, leaving the breather on the oil fill.

thanks in advance
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Old May 23, 2013 | 09:04 PM
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That's strange, the rear main is usually not the place where crank pressure relieves itself. I've blown out valve cover gaskets before, and generally the oil dipstick will push out of the tube as well.
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Old May 23, 2013 | 09:30 PM
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Youre not gonna like this....that much crankcase pressure is not a PCV issue...its a blow by issue.
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Old May 23, 2013 | 10:20 PM
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Originally Posted by Atomic
Youre not gonna like this....that much crankcase pressure is not a PCV issue...its a blow by issue.
My first thoughts as well.
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Old May 24, 2013 | 09:12 AM
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Originally Posted by Atomic
Youre not gonna like this....that much crankcase pressure is not a PCV issue...its a blow by issue.
Originally Posted by Mangled03gmc
My first thoughts as well.
^^^ Yep, you should do a compression and leak down test to check the health of your engine.
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Old May 24, 2013 | 09:24 AM
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my dipstick never popped out, the only thing that happens is the rear main leaks and it starts dripping oil.
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Old May 24, 2013 | 09:50 AM
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Ive had trouble somewhat similar, mine was caused by PCV issues. They also changed the rear main seals, and they now are installed backwards.
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Old May 25, 2013 | 03:51 PM
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Use a magnifying glass and read the seal. It says which way to install the seal. It doesn't go in the way it looks like it should. Read Close.

Jeff
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Old May 25, 2013 | 04:00 PM
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Originally Posted by Lextech
Use a magnifying glass and read the seal. It says which way to install the seal. It doesn't go in the way it looks like it should. Read Close.

Jeff
This is pretty important. It might be a little bit deceiving, because you're meant to push the seal over the end of the crank. They come with a plastic insert to keep the seal expanded to prevent the seal from collapsing while you push it on. The seal faces inward so that any pressure or oil can't push the seal outward and leak.
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