major leak coolant in oil pan - Vintage Mustang Forums
Vintage Mustang Forum
HomeForumGalleryClassifiedsAbout UsAdvertiseContact Us
» Auto Insurance
» Featured Product
Go Back   Vintage Mustang Forums > General Discussion > Vintage Mustang Forum
Vintage-Mustang.com is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
Old 05-19-2009, 06:48 PM   #1 (permalink)
Senior Member
 
Join Date: Mar 2005
Location: SouthWest Florida
Posts: 181
Default major leak coolant in oil pan

I've just finished a rebuild on a 302. All done, put in the oil, and filled the radiator. Virtually all the coolant went directly in the oil pan. I have the oil pan drain plug removed and the top radiator hose. If I pour coolant in the radiator I can hear it going into the oil pan about as fast as I add it to the radiator. What could cause this. I tend to think something wrong in the oil pan or timing cover installation. Your opinions please?
__________________
1966 coupe, 306 c.i., Trick Flow heads, comp cam, air-gap manifold, Holley 570, long tube headers, Petronix billet distributor, t-5, Hurst shifter, custom ram air set up.

1995 Cobra
lowe65 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-19-2009, 06:53 PM   #2 (permalink)
Banned
 
Join Date: Feb 2001
Location: California
Posts: 3,830
Default

Freeze plug is missing
beechkid is offline   Reply With Quote Quick reply to this message
Old 05-19-2009, 06:59 PM   #3 (permalink)
Senior Member
 
68snakebite's Avatar
 
Join Date: Apr 2008
Location: fremont IN
Posts: 501
Default

that would be my guess too

kind of hard to have that big of a hole in a gasket

chris
__________________
http://i44.tinypic.com/264t9gn.jpg


[colorrange][/color]modded 68 fastback daily driver
68snakebite is offline   Reply With Quote Quick reply to this message
Old 05-19-2009, 08:34 PM   #4 (permalink)
I won a special award
 
Maxum96's Avatar
 
Join Date: Dec 2008
Location: Northern Colorado
Posts: 6,438
Default

Quote:
Originally Posted by beechkid
Freeze plug is missing

Where would a freeze plug dump out at inside the pan? There aren't any inside the block and the only external ones are on the side of the block.
__________________
1970 Fastback (to be finished outside as a Boss 302 clone)
393 Windsor AFR 205 heads with 11.5:1 compression
Tremec TKO 5 Speed
Link to my Hub Garage and blog about my car http://www.hubgarage.com/mygarage/maxum96





Maxum96 is offline   Reply With Quote Quick reply to this message
Old 05-19-2009, 08:47 PM   #5 (permalink)
Senior Member
 
dm289's Avatar
 
Join Date: Oct 2000
Location: Cleveland, OH
Posts: 1,181
Default Re: major leak coolant in oil pan

I would first check the gasket between the timing cover and the block. If memory serves me correctly there are two round ports which support the water pump. If either of these ports leaked then they would leak directly past your timing chain over the crank into the oilpan.

Another thing to consider is whether your intake manifold gaskets are correctly oriented over the water ports on either end of the heads. Once again these would leak directly into the pan through you lifter valley.

Did you use any sealer or gasket adhesive during assembly? I have found that a very light coat of RTV silicone or Gaskacinch helps a lot during gasket installation. You have to be care excessive amounts can create problems as the excess has to go somewhere

Good luck

Dan
dm289 is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 09:21 AM   #6 (permalink)
Senior Member
 
Join Date: Aug 2002
Location: sw. florida ,port charlotte
Posts: 3,495
Default

i also agree about intake manifold gasket,first one i did after a valve job in 1970 same thing happened,i hadnt cleaned the mating places of the intake and heads,second attempt solved the problem. wes
mustang656man is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 10:21 AM   #7 (permalink)
Banned
 
Join Date: Sep 2006
Location: nc
Posts: 1,707
Default

I'm not getting the freeze plug either. I'm thinking you need to take the timing cover off and check. Maybe I'm missing something but the intake shouldn't be the issue either. You're pouring directly into radiator and bottom hose is feeding into the wp. From there, it's pouring into the pan.
blue65coupe is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 11:57 AM   #8 (permalink)
Senior Member
 
oateater's Avatar
 
Join Date: Nov 2002
Location: Stanwood, Washington
Posts: 307
Send a message via AIM to oateater
Default

It almost sounds like you have one heck of a crack in the bottom of your intake manifold. Was it ever dropped during the rebuild?

Wow! I dont even have a good clue where to go on this one.
__________________
65 A code coup 289 4SPD
66 A code convert 289 4SPD
38 Ford delux sedan [street rod]
oateater is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 12:12 PM   #9 (permalink)
Senior Member
 
Join Date: Mar 2001
Location: Ontario
Posts: 9,426
Default

Since you say you don't have the upper rad hose on that really only leaves the timing chain cover.
__________________
Paul
1965 Mustang 2+2
pprince is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 12:14 PM   #10 (permalink)
Senior Member
 
oateater's Avatar
 
Join Date: Nov 2002
Location: Stanwood, Washington
Posts: 307
Send a message via AIM to oateater
Default Re: major leak coolant in oil pan

Forget my last post, after thinking about it I dont think its the intake manifold either if its going in as fast as you say it is. Got to have something to do in the timeing chain / water pump area.
__________________
65 A code coup 289 4SPD
66 A code convert 289 4SPD
38 Ford delux sedan [street rod]
oateater is offline   Reply With Quote Quick reply to this message
Old 05-20-2009, 05:42 PM   #11 (permalink)
Senior Member
 
Join Date: Mar 2005
Location: SouthWest Florida
Posts: 181
Default

I found the problem. I used the Fel Pro 1250 intake manifold gaskets that I have before. I put on Trick Flow heads and they don't completely cover the rear water port. I pulled the manifold and that was it. Water would pour out of about a 1/8 inch opening on each side. I replaced them with Fel Pro 1262 gaskets.

This was the first rebuild I have tried in 40 or so years. Got the car started today. Needs tuning of course. It is a 306 with a Comp Cam Xtreme Energy cam, Trick Flow heads, RPM Air-Gap with a 600 cfm carb. Also did the 4 sp to 5sp conversion. For anyone interested the drive-train shop shortened the driveshaft , added new u-joints and yoke for $128. That was much less than I thought it would be.
__________________
1966 coupe, 306 c.i., Trick Flow heads, comp cam, air-gap manifold, Holley 570, long tube headers, Petronix billet distributor, t-5, Hurst shifter, custom ram air set up.

1995 Cobra
lowe65 is offline   Reply With Quote Quick reply to this message
Old 05-21-2009, 08:51 AM   #12 (permalink)
Senior Member
 
Join Date: Aug 2002
Location: sw. florida ,port charlotte
Posts: 3,495
Default

thanks for the update! wes
mustang656man 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 Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
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.



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 Off


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:39 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.