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B&b Headers
i just bought a 84 , 3.2 911 that has b&b headers and exaust. the set up is to loud till you hit 3000 rpm"s. can i change anything on this set-up to tone it down short of removeing headers ? it"s dual exaust and wondered if i cap of on side ? does any one know # for b&b ?? thanks for any help here and hope i am in right place.
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08-15-2005, 01:04 PM
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1-888-228-7435
Try there 800 number |
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08-15-2005, 01:27 PM
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Thank"S
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08-15-2005, 01:33 PM
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abit off center
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You can cap one side, its just a straight thru, that will make it much quieter, I have the single and its not bad, they say the dual adds nothing but noise.. What size tail pipes do you have? are they the oval 3"
Craig
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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08-15-2005, 01:41 PM
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called and they said to block the left side by 50% and that would really help ???
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08-15-2005, 01:42 PM
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yes they are 3" craig. someone told me to cap off the right sidebut i don"t know if that would cause to much back preasure ?
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08-15-2005, 01:45 PM
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abit off center
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Yes you can also put in a restrictor, The single out which I have is the same as the dual out except the right side is not opened up, I was thinking about making mine a 2 out and open up the right side but I would need the tail pipe,,, just so I could piss off the hood!!
Craig
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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08-15-2005, 01:53 PM
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Think i will try that. thanks for the help. Glad i found this site for i see it as being very helpful !!!!!!!!!!!
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08-15-2005, 01:56 PM
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Quote:
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77 911 2.7 Turbo Look 98 4-Runner 03 F-250 Power Stroke 93 Toyota P/U |
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08-15-2005, 01:59 PM
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Green Skull 006
Join Date: May 2002
Location: Rhode Island
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I think that it's the right side that they recommend blocking off, and it does eliminate the 2-3k resonance.
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S Reg 823 R Gruppe 246 1955 pre-A Carrera Speedster...x 1974 leichtbau..."Sascha" "It makes me sad. Our cars were meant to be driven, not polished" - Ferry Porsche while surveying a PCA Parade concours field. |
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08-15-2005, 02:26 PM
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Right side from looking from back of car ??
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08-15-2005, 02:30 PM
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Green Skull 006
Join Date: May 2002
Location: Rhode Island
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Yes.
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S Reg 823 R Gruppe 246 1955 pre-A Carrera Speedster...x 1974 leichtbau..."Sascha" "It makes me sad. Our cars were meant to be driven, not polished" - Ferry Porsche while surveying a PCA Parade concours field. |
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08-15-2005, 02:53 PM
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Thanks, will post what happens. would like to put baffle in so i could open back up when i wanted.
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08-15-2005, 03:04 PM
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Older B&Bs came w/ equal size outlets on both sides, newerr ones came w/ a very small(~.5") hole for the passenger size out. You don't see it because the tail pipe is normal size, the newest ones also have reinforcing ties to support the outlet stubs.
The small hole definitely reduced noise and resonance.
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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08-15-2005, 05:41 PM
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I was having a NOISE problem also, set off car alarms as I drove by, I had a local shop make reducers that went down to 2.1/4 inch for like 6 inches then new tail pipes, it is a whole lot quieter, Jack O suggested it, I plan to keep the muffler now or untill it cracks, sounds really great even the wife likes the way it sounds, Kevin
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08-15-2005, 05:47 PM
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THAT IS WHAT I WANTED TO HEAR CAUSE THE WIFE IS WHERE THE NOISE PROPLEM STARTED. !!!!!!!!!!!!
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08-15-2005, 06:07 PM
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actualy they went down to 2 inches, Kevin
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08-15-2005, 06:09 PM
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1984 Porsche 911 carrera 3.2
1969 and 1986 Porsche Targa and Coupe 1720cc and 3
1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
