HE mounting nut torque? |
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HE mounting nut torque? |
JeffBowlsby |
Feb 12 2012, 02:42 AM
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#1
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
So I am remounting my stock HE's and have a slight exhaust leak. I used new copper nuts, annealed new copper gaskets, anti-seize on the exhaust studs and have them at 130 in-pounds already....(just under 11 ft pounds).
Not sure I should go much tighter...any advice? |
TheCabinetmaker |
Feb 12 2012, 06:00 AM
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#2
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Don't have my book in front of me Jeff, but I think its 16 pounds.
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wingnut86 |
Feb 12 2012, 06:14 AM
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#3
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...boola la boo boola boo... Group: Members Posts: 1,053 Joined: 22-April 10 From: South Carolina Member No.: 11,645 Region Association: South East States |
Did you resurface the stock HEs so they are port matched prior to install? If no, you may apply too much torque and pull the studs or break one off.
Clean the ends of the tubes with a light sanding or scotch bright pad. Then take a colored sharpie and color the ring/oval faces of the tubes. Clamp them securely so the top surfaces are level and facing up. Take a flat file that's long enough to even them both out as you pull the file back and forth. Take off the color with the file. High and low spots will still show color till even and flat. You can use a belt sander that is long enough to span both ports, but only if you use power tools alot and have extremely stable hands. You'll find the leaks gone as you torque the HEs now. Dave |
TheCabinetmaker |
Feb 12 2012, 07:09 AM
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#4
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Whoa on that belt sander Dave! i have probably more experience with belt sanders than anyone on this board. After all, I am a 50 year professional cabinet maker. Thats something I would not even attempt. Besides, a 4 X 24 belt sander (the biggest hand held belt sander) is not long enough to reach both tubes. You'll destroy that heat xchanger quicker than you can say belt sander!!!!!!!!!!!!!!!!!!!!!!
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ChrisFoley |
Feb 12 2012, 08:16 AM
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#5
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I am Tangerine Racing Group: Members Posts: 7,925 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
Don't have my book in front of me Jeff, but I think its 16 pounds. I've never found a torque spec for the exhaust studs in the factory manual or the Haynes manual, but I've been told its listed as 14-16 in VW manuals. That's the standard torque for 8mm fasteners. 14-16 is too much for aftermarket exhausts because they aren't as robust as the factory HEs. 11 generally isn't enough because the fasteners will tend to loosen too easily on their own. |
TheCabinetmaker |
Feb 12 2012, 08:24 AM
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#6
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
My number comes from Tom Wilson's book, and I'm not sure about that. I come up to torque 2 lbs at a time from 10 to 16 so I can feel if I think its fixing to go to far. I've only snapped one a long time ago this way
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JawjaPorsche |
Feb 12 2012, 09:57 AM
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#7
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Advanced Member Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States |
After replacing the exchangers, should you drive it and allow the exhaust gaskets to get hot and soft then recheck the tightness? I am new to replacing exchangers and don't know.
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cary |
Feb 12 2012, 10:05 AM
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#8
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Advanced Member Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest |
I'm with Curt.
Start at 120 inches. And move up 24 inches. I think most of the time I stop at 14 lbs. |
wingnut86 |
Feb 12 2012, 11:46 AM
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#9
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...boola la boo boola boo... Group: Members Posts: 1,053 Joined: 22-April 10 From: South Carolina Member No.: 11,645 Region Association: South East States |
Curt,
You are correct. I've only used a vertical belt sander for 8 cylinder headers in the old days and balancing work for components. Hmmm, how much are your hourly rates for a decent set to hide all my shit in my garage (IMG:style_emoticons/default/biggrin.gif) Whoa on that belt sander Dave! i have probably more experience with belt sanders than anyone on this board. After all, I am a 50 year professional cabinet maker. Thats something I would not even attempt. Besides, a 4 X 24 belt sander (the biggest hand held belt sander) is not long enough to reach both tubes. You'll destroy that heat xchanger quicker than you can say belt sander!!!!!!!!!!!!!!!!!!!!!! |
TheCabinetmaker |
Feb 12 2012, 12:57 PM
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#10
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
I can build a set cheap. Freight would kill ya unless they were delivered KD (knocked down) on a pallett for you to assemble the boxes and install faceframe and doors.
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ChrisFoley |
Feb 12 2012, 01:27 PM
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#11
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I am Tangerine Racing Group: Members Posts: 7,925 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
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IronHillRestorations |
Feb 12 2012, 01:29 PM
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#12
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I. I. R. C. Group: Members Posts: 6,719 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None |
I check the "plane" of the exhaust ports with a big file. Some guys anneal the copper exhaust gaskets. Stock HE's will seal better than the stainless ones.
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