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Re: Intake gasket still leaking?
[Re: MRMOPAR622]
#1530835
11/10/13 01:46 PM
11/10/13 01:46 PM
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Joined: Jan 2003
Posts: 8,033
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,033
Tulsa OK
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I fought an issue similar to this that was causing my car to smoke. I ended up changing to a different style of viton seal. I had my heads ported and no guide work was done and I used the same valves and I didn't have a problem before hand. I was convinced it was intake gaskets until I tore the heads apart and noticed how much oil was on the valves, both intake and exhaust. The exhaust valves had some much oil on the stems that it ran down the valves and made a ring on the paper towel they were sitting on after I tore the heads down.
The seals the head porter put on them should have worked, I have no idea why they didn't. They were a viton seal designed to clear triple springs. I replaced them with a viton seals with a steal jacket, the kind where viton is on the guide and the valve with a steel jacket around it at the guide and a spring at the valve. This fixed my smoking problem.
I tried several intake gaskets, had the intake milled, the intake side of the head milled, and pressure checked every orifice that was near oil in the heads. I still can't believe that $16 in seals fixed this problem but it did. It burned about 1/2 quart of oil on drag week and hasn't smoked a bit since.
68 Barracuda Formula S 340
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Re: Intake gasket still leaking?
[Re: Performance Only]
#1530839
11/10/13 04:46 PM
11/10/13 04:46 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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Quote:
Quote:
well i didn't see anything with a straight edge. 
Sometimes it's easier to use a straightedge with a light behind one side to show any low spots. if it looks okay it's time to move on to the feeler gauges or clay to make sure the angles match up.
i did use a light, how to use clay/feeler gauges?
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Re: Intake gasket still leaking?
[Re: Crizila]
#1530843
11/10/13 05:34 PM
11/10/13 05:34 PM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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and the angle is = 48* for both - in my case. That'll be $5. 
Last edited by Crizila; 11/10/13 05:34 PM.
Fastest 300
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Re: Intake gasket still leaking?
[Re: Performance Only]
#1530845
11/10/13 11:07 PM
11/10/13 11:07 PM
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Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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Quote:
Quote:
Quote:
Quote:
well i didn't see anything with a straight edge.
Sometimes it's easier to use a straightedge with a light behind one side to show any low spots. if it looks okay it's time to move on to the feeler gauges or clay to make sure the angles match up.
i did use a light, how to use clay/feeler gauges?
Remove all gasket material and silicone so both intake and heads are perfectly clean. roll out some strips of clay and place them along the top and bottom of the ports on both sides. put the intake on and lightly snug the intake bolts. remove intake and measure the thickness of the clay. if the angles are right, the clay will be squished out
flat, if not, you'll see either the top or bottom strips will be thicker than the other. same
idea with feeler gauges. lightly snug intake and measure top and bottom gaps. record any differences you find.
It will help if you spray some WD 40 on the intake surface before you set it on to keep the clay from sticking upon removal. 
it's ok to butt heads, just don't do it with a butthead
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Re: Intake gasket still leaking?
[Re: MattW]
#1530849
11/12/13 06:45 AM
11/12/13 06:45 AM
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Joined: Jan 2003
Posts: 32,394
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Quote:
If my memory is good you have 360-1 heads. If so button everything up except the carb and hook up a small compressor to the intake, oil system and coolant. My Indys 230-2 were so bad they could of been used for a sprinker. It foamed under the spring cup and other places. Matt
i was actually thinking about making a plate to cover the intake port with an air fitting to pressure each port.
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Re: Intake gasket still leaking?
[Re: Quicktree]
#1530851
11/12/13 10:18 AM
11/12/13 10:18 AM
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Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
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You mentioned possibly bad guides and seals. Is it possible there is so much oil being pulled by them at idle that that is part of the problem, and reversion pushes some of the oil along the runner back to the intake face? I have similar problems caused by block flex and had to go to silicon only, no gasket. I can get away with it due to alky and injection.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Intake gasket still leaking?
[Re: gregsdart]
#1530853
11/12/13 01:15 PM
11/12/13 01:15 PM
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Quote:
You mentioned possibly bad guides and seals. Is it possible there is so much oil being pulled by them at idle that that is part of the problem, and reversion pushes some of the oil along the runner back to the intake face? I have similar problems caused by block flex and had to go to silicon only, no gasket. I can get away with it due to alky and injection.
yes it is a possibility
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Re: Intake gasket still leaking?
[Re: 408Dust]
#1530854
11/12/13 01:16 PM
11/12/13 01:16 PM
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Quote:
I'm telling you once Performance Only (Dan) works on them nothing will leak, nothing 2lbs. of epoxy won't fix.Right Dan care to comment or are you still in cricket mode?
I think you guys need to get together and settle what ever is going on here.
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, but here goes. Yes, it's another home made tool. 
This could be interesting........... 
