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Old 08-30-2011, 07:13 PM   #1
RobertGary1
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1996 SC2
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Default Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

I think I've found this out the hard way. I've been struggling with valve cover leaks. When I bought my aluminum cover it did not come with bolts so I've been using the plastic cover bolts. Today I took off work to try to get caught up with all the work my SC2 needs (thankfully new stuff started to break as I drove so there is still stuff). I went out to PnP and took some bolts off an aluminum cover. Looking at them closely the collar on the plastic bolt is much longer than the collar on the aluminum head bolt. Its long enough that I suspect it was bottoming out before max squeeze was achieved on the gasket. I've got my fingers triple crossed that I won't guzzle oil tomorrow.

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Old 08-30-2011, 07:59 PM   #2
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1998 SC2
Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

Yes, the plastic shoulder bolt assembly is different than the aluminum cover bolt. I thought that was mentioned in the cover conversion thread.

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Old 08-30-2011, 08:02 PM   #3
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Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

The Aluminum Cover bolts are Torx Head bolts while 2nd/3rd gen cam cover bolts are standard 10MM bolts.

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Old 08-30-2011, 08:23 PM   #4
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Default

Quote:
Originally Posted by 2NDSOUT View Post
The Aluminum Cover bolts are Torx Head bolts while 2nd/3rd gen cam cover bolts are standard 10MM bolts.
Yea, that part was obvious. What was not obvious was that the difference effects the bolt's performance. BTW someone is going to go to PnP and wonder who the AHole was the took the bolts but left the cover.

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Old 08-30-2011, 08:58 PM   #5
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Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

Those bolts are expensive so they go fast. And they are a different height than the plastic cover ones.

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Old 08-30-2011, 09:17 PM   #6
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Originally Posted by OldNuc View Post
Those bolts are expensive so they go fast. And they are a different height than the plastic cover ones.
I actually called the dealer to ask about price but 95 showed 2 styles for aluminum covers (or so the parts guy claimed). Honestly the PnP is less than 10 miles but my days are so booked that I try to avoid them simply because of the time required.

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Old 08-30-2011, 09:36 PM   #7
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Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

Quote:
Originally Posted by RobertGary1 View Post
I actually called the dealer to ask about price but 95 showed 2 styles for aluminum covers (or so the parts guy claimed).
The parts guy is wrong. 1994 had two different styles.

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Old 08-30-2011, 09:45 PM   #8
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Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

At PnP they were $1.35 each. It was 99c plus tax and environmental fee.

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Old 08-30-2011, 09:52 PM   #9
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Default Re: Plastic valve cover bolts arer bolts are different size than aluminum cover bolts

Quote:
Originally Posted by RobertGary1 View Post
At PnP they were $1.35 each. It was 99c plus tax and environmental fee.
They actually charged you for them? At the PnP's around here, you show them the bolts, they look at you and point towards the exit.

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