Re: oil on spark plugs
[Re: 64Post]
#462583
10/04/09 11:45 PM
10/04/09 11:45 PM
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Joined: Apr 2004
Posts: 263 shavertown pa.
kbeeper69
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Update: Took intake to a machine shop, they milled the intake 10 thousandths, he said it probably would need more. He also said that if i wanted to pull the heads that he would cc the chambers that he would see how much the heads were cut, to determine how much more would have to come off the intake. Reinstalled intake, new gasket still sucking oil, then I went as far to silicone the gasket and it is still sucking oil. Now I have pulled the head off, right where the lower row of cylinder head bolts measured the thickness got .990, I am told that stock is 1 inch. This is 10 thousandths shaved the heads, and rule of thumb is 1.5 for the intake, which already has had 10 thousandths taken off, if I go by these measurements that I have, I would need 5 thousandths more off...Would this make a big difference with it still sucking oil? Or should I have the 5 thousandths more taken off?
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Re: oil on spark plugs
[Re: kbeeper69]
#462584
10/05/09 12:10 AM
10/05/09 12:10 AM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
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Posts: 8,716
Baltimore/Denver
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Quote:
Update: Took intake to a machine shop, they milled the intake 10 thousandths, he said it probably would need more. He also said that if i wanted to pull the heads that he would cc the chambers that he would see how much the heads were cut, to determine how much more would have to come off the intake. Reinstalled intake, new gasket still sucking oil, then I went as far to silicone the gasket and it is still sucking oil. Now I have pulled the head off, right where the lower row of cylinder head bolts measured the thickness got .990, I am told that stock is 1 inch. This is 10 thousandths shaved the heads, and rule of thumb is 1.5 for the intake, which already has had 10 thousandths taken off, if I go by these measurements that I have, I would need 5 thousandths more off...Would this make a big difference with it still sucking oil? Or should I have the 5 thousandths more taken off?
No, .005" won't make a difference. IIRC anything less than .010" is absorbed by the embossing on tray. Did you by chance check the bolt hole alignment of the intake before you took the head off?
I don't think cc'ing the head is relevant at this point. It looks like they were only shaved .010", that's minimal.
Can you try/borrow another intake from someone?
Last edited by 64Post; 10/05/09 12:16 AM.
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Re: oil on spark plugs
[Re: kbeeper69]
#462587
10/05/09 11:17 AM
10/05/09 11:17 AM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
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Quote:
ive oblonged the bolt holes,when the intake is set down ,with a few bolts in it looks like it needs to be cut more.also when i bolt one side first or tighten on bolt,i can see a gap on the opposite side,till all bolts are tightened.im probably gonna end up taking the engine to the machine shop to get the deck height checked unless i can check it my self ??
Boy, I wish you had aluminum heads at this point, I've got an easy way to seal those.
Based on your previous posts we established that you had .004" gap. Now that the intake has been milled, repeat the same process you used to get the previous measurement of .004". -Clean the sealer from the heads -Bolt and torque one side of the intake down without the tray or a paper gasket. -Check bolt hole alignment of the opposite side. Since you hogged the intake holes out a bit you want the bolts to favor the upper portion of the intake holes and barely be able to catch. -Get the intake-head gap measurement.
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Re: oil on spark plugs
[Re: kbeeper69]
#462589
10/06/09 12:28 PM
10/06/09 12:28 PM
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Joined: Mar 2008
Posts: 5,746 Ontario, Canada
Dodgem
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I cannot believe a good coating of RTV (high Heat) properly applied with a new valley pan will not fix this problem. apply liberally to both sides of gasket all around ports and bolt holes. apply some more to the bolts. let set for 15 minutes before assembly!! Then snug very lightly and walk away for at least one hour!! Then tighten nice and snug wait overnight and tighten again. then tighten once a week or two. Maybe you have reversion from the cylinders but that would mean no oil ring seal at all?? What cam. What rings not chrome I hope or low tension??? something is just not right Don't use that blue silicone I used to used it cause it was Chrysler blue but it don't seal worth well you know!!!
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Re: oil on spark plugs
[Re: kbeeper69]
#462591
10/06/09 12:45 PM
10/06/09 12:45 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
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Quote:
ive done all that ,left silicon harded for a few hrs. im using moly rings.every time i pulled the intake off all ports were covered in oil,also before i would pull the intake ,i would pull a plug or two,and they would be covered oil up to the threads.ive used all the silicones in the tubes blue orange and now black,also thread sealent on the intake bolts.man that 383 i have on the stand is looking real good about now.
Are you idling? Road testing? What are you doing and how many miles are you putting on the engine before finding oil in the ports?
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Re: oil on spark plugs
[Re: kbeeper69]
#462593
10/06/09 12:52 PM
10/06/09 12:52 PM
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Joined: Mar 2008
Posts: 5,746 Ontario, Canada
Dodgem
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Dam you would think when you pull the intake you could see if you had a good seal?? maybe you are kicking the wrong cat after all??? but for that much oil it would have to have 1. no valve seals at all and god awful guides?? 2. Is it pulling oil directly into the intake via PVC. I had that problem once the stopper was gone in the PVC but it only smoked on start up and a guy cam over and said it may be A and dam it was?? Guess it would take a drink of oil on shutdown A vented cap should be on the other valve cover???? have you done a compression test and leak down. Have you pulled the valve covers to see that oil holes in rocker shafts are down and not up if they are installed up oil sprays all over!! Bin there on one bank at least back in the days before time!! Is the breather on the other valve cover routed into carb breather too?? Just wondering if you are feeding it oil from two sources??? There is always a source and a solution finding the solution is the journey that is sometimes frustrating!! How much oil in the oil pan. too much is not a good thing. (I bin there too!) I assume no porting so no porting into oil??
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Re: oil on spark plugs
[Re: Dodgem]
#462595
10/06/09 01:01 PM
10/06/09 01:01 PM
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Joined: Apr 2004
Posts: 263 shavertown pa.
kbeeper69
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im not running a pcv valve its open,i have a breather on the other side. i can see the valve seals, when i pull the intake,the silicone around the ports are flat ,on the intake side,but under the valley pan its leaking/sucking under the ports and leaving a visible sign at the lower sectionson top of the valley pan ,that i cant see with the intake on the engine.rocker shafts are on correct,crane gold race rockers ,new hardened shafts ,checked a few times to make sure. ports were supposed to be done,ported.
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Re: oil on spark plugs
[Re: Dodgem]
#462596
10/06/09 01:04 PM
10/06/09 01:04 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
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Quote:
Dam you would think when you pull the intake you could see if you had a good seal?? maybe you are kicking the wrong cat after all??? but for that much oil it would have to have 1. no valve seals at all and god awful guides??
2. Is it pulling oil directly into the intake via PVC. I had that problem once the stopper was gone in the PVC but it only smoked on start up and a guy cam over and said it may be A and dam it was?? Guess it would take a drink of oil on shutdown A vented cap should be on the other valve cover????
have you done a compression test and leak down.
Have you pulled the valve covers to see that oil holes in rocker shafts are down and not up if they are installed up oil sprays all over!! Bin there on one bank at least back in the days before time!!
Is the breather on the other valve cover routed into carb breather too??
Just wondering if you are feeding it oil from two sources???
There is always a source and a solution finding the solution is the journey that is sometimes frustrating!!
How much oil in the oil pan. too much is not a good thing. (I bin there too!) I assume no porting so no porting into oil??
He said he did a comp. test and all were at 160 psi. I was thinking he may have washed out the rings, but the comp. seems to be good.
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Re: oil on spark plugs
[Re: kbeeper69]
#462597
10/06/09 01:09 PM
10/06/09 01:09 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
64Post
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Quote:
when i pull the intake,the silicone around the ports are flat ,on the intake side,but under the valley pan its leaking/sucking under the ports and leaving a visible sign at the lower sectionson top of the valley pan ,that i cant see with the intake on the engine.
Since you're confident this is where the problem is -- and the evidence seems to bear this out -- this is why I've been focusing on port misalignment.
How much does the shop charge you to mill the intake?
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