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SpeedySpears
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Joined: June 18, 2014
Posts: 43
Location: Kansas City,Ks
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 Posted: Tue Jul 22, 2014 3:29 pm Post subject: Dual weber manifolds install |
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Picked up some used weber manifolds for 44 idfs and was just wondering which manifold goes to which head. One manifold is labelled A the other B.
Thanks for the help!
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jfats808
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Joined: December 10, 2007
Posts: 5022
Location: oahu hawaii
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| Posted: Tue Jul 22, 2014 4:09 pm Post subject: |
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Ill usually put A on the 1-2 side and B 3-4.
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SpeedySpears
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Joined: June 18, 2014
Posts: 43
Location: Kansas City,Ks
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| Posted: Tue Jul 22, 2014 4:12 pm Post subject: |
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Sweet, thank you very much!
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Glenn 
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Joined: December 25, 2001
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SpeedySpears
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Joined: June 18, 2014
Posts: 43
Location: Kansas City,Ks
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| Posted: Tue Jul 22, 2014 6:51 pm Post subject: |
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| Glenn wrote: |
| Are they ported? |
Yep port matched to my heads; btw never knew how much of a pain it would be to cut the manifold gaskets. Now I'm glad I had an extra set!
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Bajaman65
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Joined: January 16, 2007
Posts: 469
Location: Borrego Springs
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| Posted: Wed Jul 23, 2014 11:44 am Post subject: |
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| SpeedySpears wrote: |
| Glenn wrote: |
| Are they ported? |
Yep port matched to my heads; btw never knew how much of a pain it would be to cut the manifold gaskets. Now I'm glad I had an extra set! |
Use a Dremel Tool with a sanding disc, it make shaping your gaskets a cinch. |
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Hophead
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Joined: January 03, 2005
Posts: 940
Location: Chico,Ca
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| Posted: Thu Jul 24, 2014 10:26 pm Post subject: |
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I would take and compare the gasket from each head to each manifold and see what lines up...... The usually A on side X and B on Side Y might not be correct.
Unless CNC ported there can be subtle variations to each port profile. The result could be less performance if they are not on the correct head. My hand ported heads from one of the major shops was different from side to side. I cleaned it up to be as close as possible but they are still not interchangeable from side to side.
Some will not see it as big deal and for some it isn't. I wanted to wring every pony out of my build so I bushed my mainfolds to take all the slop out. It makes checking and indexing the gaskets better.
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SpeedySpears
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Joined: June 18, 2014
Posts: 43
Location: Kansas City,Ks
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| Posted: Fri Jul 25, 2014 12:57 pm Post subject: |
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Thanks I'll check it out!
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