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Intake Manifold Water Leak

Printed From: The Ford Torino Page
Category: Powertrain Specific Forum
Forum Name: Small Block Forum
Forum Description: 221, 255, 260, 302 and 351W engines
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=19821
Printed Date: 15-August-2022 at 11:54AM
Software Version: Web Wiz Forums 12.05 - http://www.webwizforums.com


Topic: Intake Manifold Water Leak
Posted By: Greg73Oregon
Subject: Intake Manifold Water Leak
Date Posted: 29-September-2021 at 10:27AM
Strange!
I installed a Ford Performance Z2 head on my 1973 351W.
My stock 2bb intake with EGR casting had 12 bolts.  A friend gave me a 1970 2bb head that doesn't have the EGR casting.  It has 16 bolt holes.
Since there is no threading in the heads for the extra bolts, those intake bolt holes are open.
Finished putting the engine together, cranked it - everything fine.
Started filling the radiator, and coolant started coming out of the rear open hole (2nd to the last bolt) on each side.
Any ideas?
I thought I read somewhere that you have to tap the 2nd to the last hole, and install a bolt???
Thanks.  


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GKF



Replies:
Posted By: handsofstone
Date Posted: 29-September-2021 at 11:54AM
 Any pics? Sounds like you are going to be pulling the manifold. It could probably be tapped in place but I would be hesitant to leave the cuttings in the engine. You have two different heads on the engine?


Posted By: Greg73Oregon
Date Posted: 30-September-2021 at 6:35AM
A pair of Ford Performance M-6049-Z2
A very close examination of the ports (etc.) are exactly the same as the OEM head.
I'm sure I would have the same issue if I had used the stock heads.  After the leaks, it flashed on me that I remember reading somewhere to drill/tap the back 2nd from the last bolt holes, and install bolts in them.  I just can't remember where I read it.
The intake manifold p/n: D1AE-9425-CA



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GKF


Posted By: californiajohnny
Date Posted: 30-September-2021 at 9:58AM
69-74 351w had 16 bolts 75+ had only 12 bolts, either will physically interchange but i like the idea of having the extra bolts around the water passages... so i opted to find an offy intake with the 16 boltsWink


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JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION


Posted By: Greg73Oregon
Date Posted: 30-September-2021 at 5:20PM
Do you have a part number?

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GKF


Posted By: californiajohnny
Date Posted: 30-September-2021 at 9:47PM
i don't! i bought it used on ebay years ago...


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JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION


Posted By: Rockatansky
Date Posted: 01-October-2021 at 12:58PM
here's a link to a copy of the Offy catalog

http://www.exeterautosupply.com/Docs/Offenhauser%20catalog.pdf" rel="nofollow - http://www.exeterautosupply.com/Docs/Offenhauser%20catalog.pdf


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72 GT Ute
   



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