Header Collector Help
#553706
12/14/09 02:20 PM
12/14/09 02:20 PM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
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With all the options avaliable for header collectors I'm still undecided. I'm updating a set of Hooker Super Comp headers w/new collectors. At first merge collectors seemed the way to go, but then I get to thinking about the 4-2-1 scavenger collectors. The only problem is they have smaller final tubes(2 1/2 or 2 3/4) I'm thinking I can put a reverse cone at the end of the 2 3/4 scav. collector and make that work, but I don't know where to put the crank case evac tube(3 or 4 in. back?) Do the scavenger collectors (4-2-1) work that much better?
Yeah, it's got a smallblock.
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Re: Header Collector Help
[Re: 340B5]
#553707
12/14/09 03:07 PM
12/14/09 03:07 PM
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Joined: Oct 2004
Posts: 8,165 Left Coast
BobR
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Quote:
With all the options avaliable for header collectors I'm still undecided. I'm updating a set of Hooker Super Comp headers w/new collectors. At first merge collectors seemed the way to go, but then I get to thinking about the 4-2-1 scavenger collectors. The only problem is they have smaller final tubes(2 1/2 or 2 3/4) I'm thinking I can put a reverse cone at the end of the 2 3/4 scav. collector and make that work, but I don't know where to put the crank case evac tube(3 or 4 in. back?) Do the scavenger collectors (4-2-1) work that much better?
Don't see any on race cars. You see a lot of merges, though.
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Re: Header Collector Help
[Re: PLUM BAD]
#553709
12/15/09 07:40 AM
12/15/09 07:40 AM
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Joined: Feb 2009
Posts: 1,532 off the grid
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Thanks. And thanks for taking time to post pics
Yeah, it's got a smallblock.
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Post deleted by Defbob
[Re: GomangoCuda]
#553712
12/15/09 02:15 PM
12/15/09 02:15 PM
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Anonymous
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Post deleted by Defbob
[Re: sg66mopar]
#553716
12/15/09 04:12 PM
12/15/09 04:12 PM
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Anonymous
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Re: Header Collector Help
#553717
12/15/09 09:57 PM
12/15/09 09:57 PM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
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OP
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Thanks for all the responses. Welding a cone in the headers is an old trick worth a few extra HP. It's a lot of trouble for a few hp, but I want to get rid of those flanges that keep catching on my trailer too. One website not mentioned above is ssheaders.com, they have a decent tech article on headers. Sorry about the hit n run post; working lots of hours.
Yeah, it's got a smallblock.
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Re: Header Collector Help
[Re: 340B5]
#553720
12/16/09 09:34 AM
12/16/09 09:34 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Most all over the counter headers are designed for a street version engines, the primary tubes are long and the collectors are way too short and usually too small in diameter. A set of headers needs to be designed for the engine... primary tube diameter, length and collector diameter and length. A merge collector isnt a one size fits all, cone shape and length mean ALOT. Also if you run a exhaust, the extension pipe going to the muffler is part of the collector(any length before a expansion area)... collectors go in length of multiples for tuning... if 18" is the best, then 36" is the next tuning length(sound wave)
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Re: Header Collector Help
[Re: coneeng]
#553722
12/16/09 10:13 PM
12/16/09 10:13 PM
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Joined: Feb 2009
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Wow....glad I revisited this post, and welcome to Moparts. I'm on a tight budget, but I don't mind a little fab work and your prices sound good. I'll visit your web site and most likely give you a call when time permits.
Yeah, it's got a smallblock.
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Post deleted by Defbob
[Re: 340B5]
#553723
12/16/09 10:28 PM
12/16/09 10:28 PM
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Re: Header Collector Help
#553725
12/17/09 11:31 AM
12/17/09 11:31 AM
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Joined: Oct 2004
Posts: 8,165 Left Coast
BobR
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Quote:
Quote:
Collector kits start at $115 in MS and $150 in SS - that's for 2 collectors including your choice of transition cones. http://www.coneeng.com/exhaust_system_kits.html
plus a week of welding.
bet there's not enough increase to warrant cost and assembly time for 99.9% of racers here because the rest of the head is not tuned for optium results
There are some serious racers on this board. Maybe 99.5% would be more accurate?
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