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12-12-2011, 06:51 PM | #1 |
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Join Date: Nov 2011
Location: Barrington, NJ
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Removing the exhaust and intake manifold
Tried to tighen the manifold up and run it...no avail. Still leaked. removed everything and found 2 gaskets...why? I don't think it should be necessary, but asking for opinions. Tomorrow I will take the manifolds and glass bead them and then take it to Napa down the street and have them check it out and sand them flat if necessary. Doesn't seem to have a droop as suggested earlier. Just wasn't expecting to find two gaskets.
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12-12-2011, 07:01 PM | #2 |
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Location: 40 Mt.Vickery Rd. Southborough,MA 508-460-0733
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Re: Removing the exhaust and intake manifold
Hello Tom:
There shouldn't be two gaskets as you suspected. Clearly the manifold is warped. I would have the resurface it and then get the copper style exhaust gaskets"the good ones" rather than the asbestos sheet. |
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12-12-2011, 07:35 PM | #3 |
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Location: Portland, Oregon
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Re: Removing the exhaust and intake manifold
Tom, sanding probably isn't going to do it. Have them machined together so you've got one flat continuous surface, then install them with the gasket J&M suggested. Make sure your washers are installed in the right direction. Snug the nuts down to about 40 lbs, then snug 'em again after you've warmed it up. Some say torque 'em to 55 lbs, but I've always just tightened them 'tll they're tight.
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Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole. |
12-12-2011, 08:12 PM | #4 |
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Re: Removing the exhaust and intake manifold
Tom,
Check the studs for damaged threads ... many times folks use pipe wrenches or visegripes to tighten or loosen the studs. Or studs are all rusty and dirty. Many such things have happened over the last 80 years. In the process they damage the threads. Then the nuts jam on the studs and donot tighten the manifolds as they should. The nuts appear to be tight but do not clamp the manifolds tightly to the block. Sometimes the holes for the studs in block are full of rust and dirt so the studs are too long and the nuts run past the threads where they bind up. Any of the above might be the reason for using two gaskets. Checking the height of the six ports with the two manifolds bolted together and truing them as stated above is the first step. Last edited by Benson; 12-12-2011 at 08:20 PM. |
12-12-2011, 08:17 PM | #5 | |
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Location: MN
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Re: Removing the exhaust and intake manifold
Quote:
A gasket will make up some problems. But the advent of extra gaskets says to me they installed knowing it was not true. Till they're tight. my experience. https://fordbarn.com/forum/showthread.php?t=11433 Last edited by Tinker; 12-12-2011 at 08:35 PM. Reason: added thread |
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12-12-2011, 08:24 PM | #6 |
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Re: Removing the exhaust and intake manifold
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12-12-2011, 09:12 PM | #7 | |
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Re: Removing the exhaust and intake manifold
Quote:
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12-12-2011, 09:20 PM | #8 |
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Join Date: Oct 2011
Location: Altamonte Springs, Florida
Posts: 96
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Re: Removing the exhaust and intake manifold
Since we are talking manifolds, what do you paint or cover the manifolds with to keep them looking good. I plan to install Red's tubular headers soon and don't want them looking old too soon.
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12-12-2011, 10:32 PM | #9 |
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Location: Fort Worth, Texas
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Re: Removing the exhaust and intake manifold
do everything people have mentioned above, but i would suggest not torquing over 35 pounds. If they're machined together you don't need to torque them anymore. I used 25 pounds on my coupe for two years without a leak, and i torqued the one on our fordoor to 35 but i wouldn't go anymore, it was really tight for those little manifold ears.
Just my opinion
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12-12-2011, 11:50 PM | #10 |
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Re: Removing the exhaust and intake manifold
If you are using the four exhaust manifold gland rings you may have to file them down also.
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