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centerbolt cover leaks

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Old Oct 22, 2007 | 12:46 AM
  #1  
tak0064's Avatar
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Joined: Aug 2007
Posts: 54
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From: denton, tx
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
centerbolt cover leaks

i've searched around for a bit, and found quite a bit of info on leaky valve covers, but none of them answered my questions.
my stock valvecovers are leaking oil out of the 4 bolt holes on the top of both of them, as well as out of the oil cap. They aren't leaking at all around the perimeters of the covers though. I have tightened all of the bolts on top, got a new pcv valve, as well as a new oil cap, but it hasn't stopped it from leaking at all.
i feel like this is a very easy fix, but i am clueless.....does anyone know what could be causing this?
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Old Oct 22, 2007 | 01:09 AM
  #2  
chevyboy's Avatar
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Joined: Sep 2003
Posts: 45
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From: New Mexico
Car: 1990 RS
Engine: Mild 396 Smallblock
Transmission: TCI Streetfighter turbo 350
Axle/Gears: 3.73 10 bolt Strange Posi
Re: centerbolt cover leaks

Have you tried using an O-ring on your four hold down bolts? I used that trick before I switched to perimiter bolt aluminums.
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Old Oct 22, 2007 | 01:21 PM
  #3  
tak0064's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2007
Posts: 54
Likes: 0
From: denton, tx
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
Re: centerbolt cover leaks

i haven't tried o rings yet, but that definitely makes sense. what would i do about my oil cap leaking as well?
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Old Oct 23, 2007 | 07:05 PM
  #4  
tak0064's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2007
Posts: 54
Likes: 0
From: denton, tx
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
Re: centerbolt cover leaks

i set up a second pcv valve on the passenger side so that there would be one on both sides, and made both pcv lines run to a T connector in front of the tb, so far the leaks have gone away.
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Old Oct 23, 2007 | 07:18 PM
  #5  
SpitotRs305's Avatar
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Joined: Oct 2006
Posts: 1,974
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: centerbolt cover leaks

okay now you should take out the second PCV and put the breather back in... and use a little RTV around the bolt heads and install that new "working" PCV on the driverside... that way you have 1 functioning PCV and 1 functioning breather....

NOT 2 of either
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