Intake Manifold Sealing Problem - Ford Muscle Forums : Ford Muscle Cars Tech Forum
FordMuscleForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 02-04-2003, 04:56 PM   #1 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,308
Intake Manifold Sealing Problem

hey guys,
The problem just won't go away! My lower intake is leaking coolent again! This is the gonna be the third attempt to seal it all up right. I called a local shop and the labor itself was gonna be "at least 300.00 for labor", but I had a k member in mind for the 300.00. Anyone have any idea why this thing won't seal up? I don't want to spend 400.00 for a leaky intake manifold. The first time around I used a regular CSK gasket, second time a thick victor reinz gasket. The victor worked pretty good for about 2 weeks, then noticed coolent leaking out by the distributer. Any thoughts?
__________________
\"Riding in the little yellow bus special\"
sinistertrucker is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-04-2003, 05:05 PM   #2 (permalink)
Registered User
 
Join Date: Feb 2001
Posts: 2,251
Intake Manifold Sealing Problem

If it is a 302 / 5.0 there is a difference in the water passages in the front of the head and or intake manifold.

so if you have late model heads with an early model intake you could have a problem with the gasket you are using. One of them has a smaller hole so if you use the gasket with a big hole well, that could be the problem.

My 2 cents. Guess you might say



_________________


544 is in the shop.

[ This Message was edited by: 393Clevor on 2/5/03 5:06am ]
393Clevor is offline   Reply With Quote Quick reply to this message
Old 02-04-2003, 05:33 PM   #3 (permalink)
Registered User
 
Join Date: Jan 2001
Location: Oregon
Posts: 2,386
Intake Manifold Sealing Problem

I don't know your methods, but check the "Tech Tips" in the link below. It has some time tested advice on installation of intakes.

http://www.vintage-automotive.com/
mstngjoe is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 01:26 AM   #4 (permalink)
Registered User
 
Join Date: Jan 2001
Posts: 1,068
Intake Manifold Sealing Problem

You said that coolant was leaking by the distributer.....are you sure that your manifold is not cracked? Or maybe has the thermostat neck gasket failed, spraying coolant over by the Distributer? I would think that if there was a leak between the intake/heads that the coolant would go into the lifter valley and not out the gasket ends.
ChicoB is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 01:38 AM   #5 (permalink)
Registered User
 
Join Date: Feb 2001
Posts: 1,073
Intake Manifold Sealing Problem

Common sealing problems

1. Using too much RTV sealer.

2. Not torqing it down correctly.

3. Head/block shaved too much.

4. Running engine before sealer drys.
SCOTT is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 02:07 AM   #6 (permalink)
Moderator
 
Join Date: Dec 2001
Posts: 2,150
Intake Manifold Sealing Problem

what kind of engine, heads, and manifold?
67stang is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 04:46 PM   #7 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,308
Intake Manifold Sealing Problem

88 5.0 HO, stock ported and polished heads, stock HO intake port matched and polished with the heads. The first time around I used rubber end seals, the second time RTV. It is leaking into the lifter galley, hence the white smoke. Help me out brothers, I don't want to spend half of my "tax" money for some other man to play with her manifold.
__________________
\"Riding in the little yellow bus special\"
sinistertrucker is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 05:14 PM   #8 (permalink)
Registered User
 
Join Date: Feb 2001
Posts: 2,251
Intake Manifold Sealing Problem

There is a difference between the early 302 and the later 5.0 water passages but in this case he is using all 5.0 stuff.

I would check the heads and manifold for cracks.

And it seems to me that the bigger ported gasket that comes in most kits are for the early 302's and the smaller ported gasket were for the later 5.0's (The gasket kits that I have bought come with two different intake gaskets) and they are different. Port opening and the end water passages are different I'm pretty sure.

393Clevor is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 07:07 PM   #9 (permalink)
Registered User
 
Join Date: Jun 2001
Location: 35.753983 N, 91.634603 W
Posts: 5,551
Intake Manifold Sealing Problem

what intake gaskets are you using? I once had a problem with Fel-pro #1250 gaskets leaking coolant into the valley as well, changed the gaskets to a 1262, or a Mr. Gasket 90103-1 (I'm not positive about the Mr. Gasket number). It was a RPM air gap manifold if that makes any difference. Good luck
mavman is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 07:27 PM   #10 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,308
Intake Manifold Sealing Problem

Thanks for the input. I will have intake checked for cracks in the morning.
sinistertrucker is offline   Reply With Quote Quick reply to this message
Old 02-05-2003, 11:56 PM   #11 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,308
Intake Manifold Sealing Problem

I was talking to a buddy of mine and he suggested a "block test" He says it is a fluid you pour into the coolent to check for a cracked head, anyone heard/done this??
__________________
\"Riding in the little yellow bus special\"
sinistertrucker is offline   Reply With Quote Quick reply to this message
Old 02-06-2003, 01:47 AM   #12 (permalink)
Registered User
 
Join Date: Sep 2002
Posts: 1,947
Intake Manifold Sealing Problem

Around here we have Autozone stores which rent cooling system pressure testers -- actually they don't charge, just a deposit.

Very nice -- you remove the radiator cap and attach the gauge and pump. Pump the cooling system to 13 psi and if you have leaks... it comes out the leaky area. Makes it quick to diagnose.
__________________
1970 Cougar, 3660 lbs
418W, C6, 3.50 posi, slicks & street trim
Best 1/4 mi: 11.24 @ 119 MPH Best 1/8 mi: 7.13 @ 96.32MPH
allenman85 is offline   Reply With Quote Quick reply to this message
Old 02-06-2003, 10:20 AM   #13 (permalink)
Registered User
 
Join Date: Sep 2002
Posts: 104
Intake Manifold Sealing Problem

White smoke sounds like a head gasket leak not a leak into the lifter valley. If it were leaking into the lifter valley the oil would be milky looking.
sfcrandall is offline   Reply With Quote Quick reply to this message
Old 02-06-2003, 01:42 PM   #14 (permalink)
Moderator
 
Join Date: Dec 2001
Posts: 2,150
Intake Manifold Sealing Problem

Quote:
On 2003-02-06 10:20, sfcrandall wrote:
White smoke sounds like a head gasket leak not a leak into the lifter valley. If it were leaking into the lifter valley the oil would be milky looking.

my thoughts exactly....
It does not sound like you have an intake sealing problem. If coolant were leaking past the gasket, it would definately contaminate the oil, and within minutes of driving your oil would look like a frothy brown/white milkshake.

It is possible that coolant could leak directly into an intake port, and none into the intake valley...but this is highly improbable...especially if you say you've replaced the gaskets a couple time to still have this problem.

Secondly any intake gasket problem would result in low manifold vacuum.. i.e. a vacuum leak. If you are not having poor idle, and low vacuum, it also lends to the idea that your coolant is getting into the chamber from somewhere else... i.e. head gasket or a leak in the port of the head.

Since you said the heads are ported, I'd like to know how much... sounds to me like your problem is head gasket or a leak in the head.

You could try some block/radiator sealer... pick it up at any parts store, dump it into the radiator and run the car. The aluminum powder may seal up a small pin hole leak. Worth a shot before you tear off the heads.
67stang is offline   Reply With Quote Quick reply to this message
Old 02-06-2003, 04:16 PM   #15 (permalink)
Registered User
 
Join Date: Nov 2002
Posts: 1,308
Intake Manifold Sealing Problem

ah man It is not a major leak as to where the oil is turning milky. The heads were not hogged out, just cleaned up and port matched. I have the top end all apart and gonna have the lower intake checked for flaws in the am. Thanks for the info.

_________________
**Looking for aluminum 5.0 Heads**
"speed kills, but you'll get there faster!"

[ This Message was edited by: sinistertrucker on 2/7/03 4:18am ]
sinistertrucker is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Muscle Forums : Ford Muscle Cars Tech Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 06:29 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0
 

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.