Heads / Manifold question???
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 3,246
Likes: 4
From: Bay Area CA
Heads / Manifold question???
I've got some new heads, edelbrocks. Also, an edelbrock 2101 manifold. The heads have water passages front and rear. The manifold has water passages center and front. Is this normal, how do the heads stay cool??? seems like there would be no flow through the head??? 
By water passages, i mean the ones next to the intake runner ports, the ones sealed by the intake manifold gasket.
By water passages, i mean the ones next to the intake runner ports, the ones sealed by the intake manifold gasket.
Last edited by RunningMan373; Jun 9, 2009 at 06:28 AM.
Instructor
Joined: Mar 2009
Posts: 187
Likes: 1
From: WA
The cooling passages in the heads/block are only in the front. GM put ports on each end of the head so the head can be interchangeable (left to right; right to left). No need to buy left or right side head.
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 3,246
Likes: 4
From: Bay Area CA
Thanks,
So the center cooling passage in the manifold won't fill with water? or is there a internal link between the front cooling passage and center cooling passages in the manifold, because there's no center cooling passage in the heads?
So the center cooling passage in the manifold won't fill with water? or is there a internal link between the front cooling passage and center cooling passages in the manifold, because there's no center cooling passage in the heads?
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Race Director
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From: CORVETTE 77 385 C.I. TEXAS
Yes. Carb heating to help vaporize the fuel esp. in cold weather has been used for a long time.
EGR, Exhaust Gas Recirculation is an emissions control, lowers peak combustion temp.
"2101" does not have EGR.
EGR, Exhaust Gas Recirculation is an emissions control, lowers peak combustion temp.
"2101" does not have EGR.
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 3,246
Likes: 4
From: Bay Area CA
So it's just a sealed passage, with air in it, no feeds from anywhere? like exhaust or water? sealed on both sides by the intake gaskets?
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 3,246
Likes: 4
From: Bay Area CA
Alright, thanks. It looks like the heads i got have no provision for the exhaust gasses to get to this area.
http://www.edelbrock.com/automotive_...e-street.shtml
http://www.edelbrock.com/automotive_...e-street.shtml
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 3,246
Likes: 4
From: Bay Area CA
may solve itself! 
Drifting
Joined: May 2005
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From: Somers CT