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FE TALK
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http://www.clubcobra.com/forums/fe-talk/)
| DanEC |
04-29-2010 05:32 PM |
FE aluminum intake heat shield
What's the story on heat shields on the bottom of Ford aluminum intakes? I don't have one on the bottom of the 63 dual quad intake I purchased and the seller made a point of saying so. However, from a cursory inspection, I'm not sure it ever had one. I don't see any holes or signs of fasteners on the bottom that would have secured one. I have see a picture of another manifold that appeared to have a shallow metal pan-shaped shield on the bottom. I've also noticed lifter valley shields for FE motors - which would appear to function just as well to keep most hot oil off of the manifold. Is that what most everyone is using>
Dan
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| FUNFER2 |
04-29-2010 05:54 PM |
I had one on my 428 and seemed to work. How much,...... ?
Does it keep oil splash down and keep hot oil off the intake, in theory yes.
I don't know if anyone can say,.... absolutely yes. :confused: ;)
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| Excaliber |
04-29-2010 06:07 PM |
I recall reading some test a magazine did, I think it was Hot Rod, many years ago with and without a valley pan. That was a small block Cheby but I think the principles would apply across the board. The engine made MORE power with a valley pan than without.
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| Danr55 |
04-30-2010 03:16 AM |
If you're talking about the galley pan under the intake, it keeps the hot oil off of the intake and keeps the mixture cooler. Xcaliber is correct. The engine makes more HP with the pan than without it.
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My 2x4 tunnel wedge has a "bolt in" valley pan. The intake runners stay as cool as possible.
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| acmjg |
04-30-2010 05:54 AM |
My FE has no valley pan and no heat shield under the intake. My crossovers are blocked so I'm not worried about caking oil on the bottom. Can't imagine much of a HP loss from no heat shield.
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| DanEC |
04-30-2010 11:22 AM |
The valley pan definately sounds like a good idea. I was just trying to determine if Ford aluminum intakes really had an integral heat shield on the bottom of the intake - or if that is just a myth? Beginning to sound like a myth.
Thanks
Dan
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| Excaliber |
04-30-2010 11:45 AM |
My High Rise intake doesn't have one, but the High Rise also had no exhaust cross over either like most all other FE's intakes have.
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| Bobcat |
04-30-2010 12:48 PM |
My 63 1/2 Galaxie 427 had one on the original aluminum intake and also the dual quad intake I found at a swap meet . However , my Sidewinder intake doesn`t . Could it be that if the intake was for "street use " it had the heat shield on the intakes and race units ( Sidewinder , tunnel ports etc ) didn`t ?? The shield is held on by bolts .
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| DanEC |
04-30-2010 05:32 PM |
Quote:
Originally Posted by Bobcat
(Post 1047756)
My 63 1/2 Galaxie 427 had one on the original aluminum intake and also the dual quad intake I found at a swap meet . However , my Sidewinder intake doesn`t . Could it be that if the intake was for "street use " it had the heat shield on the intakes and race units ( Sidewinder , tunnel ports etc ) didn`t ?? The shield is held on by bolts .
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I believe my intake has four bolts on the bottom. I thought they were countersunk but maybe not. I'm speaking from memory - I sent it off to be re-finished. I figured they were some sort of core holes for the casting. Maybe they are actually for the heat shield. |
| tcrist |
04-30-2010 06:01 PM |
The holes could be countersunk and threaded. If the shield was of thin material the thickness of the screw head would be thicker than the material thickness of the shield. Basicly the c'snk part of the screw sticks through the shield hence the need for extra relief on the manifold for the screw to tighten the shield down.
Just a thought, I could be wrong and probably am.
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| Bobcat |
04-30-2010 07:32 PM |
They aren`t core holes . I checked both my shop manuals ... 60 to 64 Galaxie and 67 Fairlane in the 427 section . Back then , all 427 engines came with an oil shield on the bottom of the intakes and one also between the heads in the valley ( valley pan ) ... and I remember that when I changed manifolds on my Galaxie last summer , there was the splash shield on the manifold and on the engine also .
Those 4 holes are for mounting the oil splash shield on the bottom of the intake(s) . It kept the manifold a little cooler and helped the incoming mixture stay a little cooler . Make sure you use some red loctite on those screws .
Bob
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| DanEC |
05-01-2010 06:40 PM |
Since that mystery is solved, does anyone have a picture of the heat shield? I may try to fabricate one.
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