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jar84203
 Post subject: Intake Manifold ?
PostPosted: Thu Jul 30, 2009 9:31 am 
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3 Deuce Weber
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Does anyone know what the small bumps are on the underside of an intake manifold for a 225 slant six?

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Wesola78
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PostPosted: Thu Jul 30, 2009 9:39 am 
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Turbo EFI
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I'm guessing that you're referring to the bumps that are where the intake and exhaust manifold bolt together. I would guess that these are supposed to help with heat transfer, but I'm not sure.

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jar84203
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PostPosted: Thu Jul 30, 2009 12:03 pm 
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3 Deuce Weber
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Those would be the ones I'm referring to. Hmmm... that makes sense...

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Reed
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PostPosted: Thu Jul 30, 2009 12:33 pm 
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Supercharged
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They also make a great meat tenderizer or nutcracker, especially if the manifold is one of the cast iron ones. :wink:
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Rug_Trucker
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PostPosted: Thu Jul 30, 2009 12:56 pm 
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They also make a great meat tenderizer or nutcracker, especially if the manifold is one of the cast iron ones. :wink:

AloomiNeeums don't have those things. They don't need them. They warm up quicker.

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bigslant6fan
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PostPosted: Thu Jul 30, 2009 1:23 pm 
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:lol: :lol: :lol:

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Reed
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PostPosted: Thu Jul 30, 2009 1:31 pm 
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Supercharged
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Wellllll, I just looked an AL one barrel intake I have and it does have lines on the bottom. Not the bumps, but definite raised lines.
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Rug_Trucker
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PostPosted: Thu Jul 30, 2009 4:02 pm 
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Wellllll, I just looked an AL one barrel intake I have and it does have lines on the bottom. Not the bumps, but definite raised lines.
The one aluminum 2bbl I have has a raised area for the EGR passage, then has raised crosshatching on it. There is another aluminum 2bbl out there. It is owned by a friend. Never looked at it.

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto :-( Dually Clubcab needs a injector pump
2005 Golden Couch Buick
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RustyRamcharger
 Post subject: Re: Intake Manifold ?
PostPosted: Thu Jul 30, 2009 5:25 pm 
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TBI Slant 6
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Location: northern NJ, USA
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Does anyone know what the small bumps are on the underside of an intake manifold for a 225 slant six?
They increase the surface area for greater heat flow.

Ken
:-)
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Rug_Trucker
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PostPosted: Fri Jul 31, 2009 7:09 pm 
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Turbo EFI
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Quote:
Wellllll, I just looked an AL one barrel intake I have and it does have lines on the bottom. Not the bumps, but definite raised lines.
The one aluminum 2bbl I have has a raised area for the EGR passage, then has raised crosshatching on it. There is another aluminum 2bbl out there. It is owned by a friend. Never looked at it.
Well, looked at my friend's 76 or 78 aluminum intake. It does have the nubs!

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'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto :-( Dually Clubcab needs a injector pump
2005 Golden Couch Buick
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