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Correct gasket for Edelbrock Intake

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1968Javelin343 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1968Javelin343 Quote  Post ReplyReply Direct Link To This Post Topic: Correct gasket for Edelbrock Intake
    Posted: May/15/2012 at 7:29am
I also had a problem with the air gap and no valley pan gasket.  I found that the fiber gasket (old stock Mr. Gasket fiber style) was too old or too hard to compress and fully seal the bottom of the intake runners.  This may be from a slight angle differential between the head sealing surface and the angle milled on the intake, but I did not measure it at the time.  Consequently, I was drawing oil through both the PCV and through the gasket at the bottom of the runners.  I put a pan gasket in place with the recommended sealer around the ports and the problem went away.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: May/14/2012 at 7:08pm
Originally posted by fmahannah fmahannah wrote:

It turned out the real cause of my oil burning was rubber valve seals being squished every cycle because of the cam lift. Switched back to hard seals and that stopped it until I can have the heads done with positive seals and new guides.

On the intake I ended up using BOTH the valley pan and the gaskets, but it sure was not easy to get the holes lined up


My oil usage completely stopped with new valve seals as well, although I had cracked and worn hard seals replaced with the same.  And when I converted from 2V to 4V, I also used the valley pan with an Offy intake.  From the oil ghosting on the bottom of the old pan to the oil I lost through the bad seals, I'm a true believer in the ability of AMC engines to get the oil all the way up top.  There's no way I'd do an intake without using the valley pan gasket, it's just asking for trouble.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote fmahannah Quote  Post ReplyReply Direct Link To This Post Posted: May/14/2012 at 6:18pm
It turned out the real cause of my oil burning was rubber valve seals being squished every cycle because of the cam lift. Switched back to hard seals and that stopped it until I can have the heads done with positive seals and new guides.

On the intake I ended up using BOTH the valley pan and the gaskets, but it sure was not easy to get the holes lined up
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Post Options Post Options   Thanks (0) Thanks(0)   Quote darrylrae Quote  Post ReplyReply Direct Link To This Post Posted: May/14/2012 at 6:07pm
Hi. What was the final verdict if at all with the oil problem and the Air Gap? I am currently having the same problem. I used just the runner gaskets with no valley pan and it's burning lots of oil. This will be the third Edelbrock intake on this engine and each time I only used the runner gaskets with no issues. Had the Air Gap off twice now, can't find any issues. Everything seems to line up very well. I unhooked the PCV for about 5 mins. with no difference in oil consuption. Any thoughts?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 6:41pm
Originally posted by fmahannah fmahannah wrote:

I did that with my 91 Cherokee with 250,000 miles, but saw some bad reports about it and not sure I want to risk it with the Javelin. I will probably get some of the detergent stuff recommended and try that though. I don't drive much and don't want to wait weeks to see if she stops smoking LOL


If you're concerned with hydrolocking the engine you can use the Seafoam in the spray can.  I guess a Techron treatment might also work in lieu of the faster (and more dramatic) Seafoam through the carb.  Either would help clear out any residues from oil that seeped in through the intake seals and let you move forward on it more quickly.  Good luck.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 6PakBee Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 5:48pm
Originally posted by fmahannah fmahannah wrote:

I plan to run it down the road some every day until it stops smoking or I get tired of it and take it in for head work LOL.

One thing I did notice though was where before the center two cylinders on each side the plugs looked like they were washed clean, now they are starting to burn light brown like normal so must be heading in the right direction.

Thanks guys!  Will keep you posted
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fmahannah Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 3:47pm
I did that with my 91 Cherokee with 250,000 miles, but saw some bad reports about it and not sure I want to risk it with the Javelin. I will probably get some of the detergent stuff recommended and try that though. I don't drive much and don't want to wait weeks to see if she stops smoking LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 3:32pm
Originally posted by fmahannah fmahannah wrote:

I plan to run it down the road some every day until it stops smoking or I get tired of it and take it in for head work LOL.

One thing I did notice though was where before the center two cylinders on each side the plugs looked like they were washed clean, now they are starting to burn light brown like normal so must be heading in the right direction.

Thanks guys!  Will keep you posted


Have you considered using some Seafoam through the carb to clean it out quicker?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote fmahannah Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 2:34pm
I plan to run it down the road some every day until it stops smoking or I get tired of it and take it in for head work LOL.

One thing I did notice though was where before the center two cylinders on each side the plugs looked like they were washed clean, now they are starting to burn light brown like normal so must be heading in the right direction.

Thanks guys!  Will keep you posted


Edited by fmahannah - Aug/21/2011 at 3:19pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote irish13jeff Quote  Post ReplyReply Direct Link To This Post Posted: Aug/21/2011 at 2:22pm
Originally posted by 69 ambassador 390 69 ambassador 390 wrote:

Your on the edge.  Glazed cyilnders from the oil.  Run it.
x2
That's not to bad,should be no more than 20% change beween the highest reading piston to the lowest reading piston. So just as 69 ambassador said "run it"...at worst case and the smoking doesnt stop you'll need to envest in a head job.Good Luck my friend and keep us updated on the outcome.
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