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Tractor Talk Discussion Forum

split manifold

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Terry

01-16-2004 20:26:42




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OK, I am nuts, lets get that settled before I ask advice.

If you split a manifold on a 6 cyl, do you have to partition off each side or just cut a hole and let the exhaust do its thing.

The engine that I am talking about is a 6 cyl
chrysler flat head. I don't want it to be loud like a woman I used to know, just soft and sweet.




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MT Pockets

01-17-2004 11:06:25




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
Terry,the sweetest sounding thing I ever heard was a 1954 GMC half ton with a 248 ci with twins on it. My industrial arts teacher owned it. If you would like details, e-mail me. Thanks. MT Pockets.



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Bus Driver

01-17-2004 10:12:45




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
To get the sound as expected, the front three cylinders must empty into one pipe, the back three into another with no connection between them. I did this on a 1955 Dodge truck and some earlier Chevy's.



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vince

01-17-2004 10:04:38




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
Do it Terry it is the best sound a 6 can have with glass packs :)



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Dick A

01-17-2004 08:20:02




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
I had the heat riser blocked off and got a ticket that required an inspection before it was settled. Then the manifold had to be taken off and opened up. It still sounded nice with glass packs on it.



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Allan

01-17-2004 04:04:32




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
Hi Terry,

I've done it both ways. The sweetest tone and most efficient way is to completely partition the dude off.

Like the other fellow said, if you just drop out another route, all you gain is a little breathing area. Better to wall it off, in my estimation.

Allan



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Howard Yoshida

01-17-2004 02:53:55




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
Aloha, I did that to my mother's 51' Desoto a long time ago and it purred like a kitten. Yes, I did separate both halves.

Mahalo,
Howard



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Gene Davis (GA.)

01-16-2004 20:40:19




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
I used to run them on '49-50 Plymouths and Dodges. They need to be blocked off in the center and seperated to give that good "3 cylinder odd firing ear splitting vibrating tone". If you don't divide it the sound will be a lazy sounding rumble tone. If you want to have a wierd sound split it 4&2, not the usual 3&3. The biggest problem I found with the home made splits was that welding of the old cast iron manifold was difficult, and also the engine ran very poor when cold as the heat riser had to be removed. Better to buy a factory split unit header. Also found that a split manifold usually got the connecting rod bearings because of-" revving it up to hear it bellow"!

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Fern(Mi)

01-17-2004 04:15:24




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 Re: Re: split manifold in reply to Gene Davis (GA.), 01-16-2004 20:40:19  
I remember those days. I used to warm the ends in an old female waisted parlor stove, welded the end piexes in with 8109 (or was that 6018) rods, and then beat on them with a pointed hammer to cool'em off.
Having Fun.



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old

01-16-2004 20:30:16




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 Re: split manifold in reply to Terry, 01-16-2004 20:26:42  
Why doyou want to do this, for looks or what if you doit it willmake a lot of the ear ringing



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terry

01-16-2004 22:02:22




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 Re: Re: split manifold in reply to old, 01-16-2004 20:30:16  
my ears already ring



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steveormary

01-17-2004 11:54:10




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 Re: Re: Re: split manifold in reply to terry, 01-16-2004 22:02:22  

And smokey will be waiting to pull you over for loud pipes. Had a 50 Chevy with split manifold and it sure would crackle when engine was cold. Got stopped for loud pipes and a warning for speeding.



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Brian G. NY

01-17-2004 15:44:14




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 Re: Re: Re: Re: split manifold in reply to steveormary, 01-17-2004 11:54:10  
Been a Ford man all my life and I had plenty of flathead Fords with dual glass packs and they sound about as sweet as you can want. But..... put a "Fenton" split manifold and "Smittys" on a Chevy or GMC six and the sound is devine to the ear.



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bill butler

09-26-2004 13:53:51




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 Re: Re: Re: Re: Re: split manifold in reply to Brian G. NY, 01-17-2004 15:44:14  
trying to buy split manifold for 50 chevy---



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bill butler

09-26-2004 08:10:47




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 Re: Re: Re: Re: Re: split manifold in reply to Brian G. NY, 01-17-2004 15:44:14  
I've been trying to buy a split manifoild and duals with smittys for a 50 chevrolet --have not been able to locate them---do you by chance know where I can get them ? Thanks !!



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