 V8 topic: Anyone know what header baffles..., ...are used for? |
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| neo914-6 |
 Apr 16 2005, 11:01 PM
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#1
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neo life  Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159  |
Don't say to "baffle" noise. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) These are nice large diameter competition headers and It took alot of time getting them out... couple of weld beads on the inside were hard to grind down w/o a dremel. (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)
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| Mueller |
Apr 16 2005, 11:03 PM
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#2
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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it's a muffler of sorts that fit's inside the header....
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| messix |
Apr 16 2005, 11:11 PM
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
muellers right.
your doing good by getting rid of them. defeats the effect of the collector. what are they going into? |
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| neo914-6 |
Apr 16 2005, 11:49 PM
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#4
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neo life Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159 |
Into my V8 conversion, replacing my old blackjack rusty headers. It just seems odd someone would buy competition headers and go ahead and restrict them. (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) |
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| messix |
Apr 17 2005, 01:03 AM
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#5
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
well stupid is as stupid does.
do you know much about headers? collector extensions and such. |
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| 914GT |
Apr 17 2005, 09:15 AM
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#6
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
Maybe they're not as restrictive as mufflers when run with a straight pipe, but I bet they're still noisy.
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| scotty914 |
Apr 17 2005, 09:21 AM
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#7
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suby torque rules Group: Members Posts: 1,525 Joined: 20-July 03 From: maryland, the land of 25 year Member No.: 924 |
i wonder if they are used to help even out the pulses from the cylinders and give a smoother flow
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| SLITS |
Apr 17 2005, 10:11 AM
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#8
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
An open pipe can overscavenge the cylinder, causing the unburnt air/gas charge to go down the pipe instead of "staying" in the cylinder (also has a lot to do with the cam profile too).
All cars require some amount of backpressure in the exhaust system to run correctly unless your a WOT drag machine. This is either accomplished by length and bends or baffles. It takes a dyno to find out what the optimum is...period. Those pipes are real short. |
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| messix |
Apr 17 2005, 04:24 PM
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#9
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
not trying to sound like a know it all....but theres some missinformation here. [B]popular hot roddings may issue has the best and clear laymans explanation of modern exhaust design. mostly aimed at v8s but will work for any engines.
it's very difficult to "over scavenge" an engine with collector extentions,there tuned to the cam and heads rpm range to maximize torque. baffles in the collector do nothing but ruin the performance gains of headers. in your using baffles in collectors to tune the engine the pimary pipe diameter is way off. consider your lawnmower engine with a over sized exhaust 2" pipe. just loud! check out that article Troy |
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| J P Stein |
Apr 17 2005, 05:22 PM
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#10
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
You sound OK to me (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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