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Author
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Topic: Quieter living through Car Chemistry Inc.
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SteveLaRiviere
Big Kahuna Posts: 7360
From:Saco, Maine USA '72 Mustang Sprint 351C '94 F-150 XL 5.8L and a '97 Probe GTS 2.5L DOHC
Registered: May 99
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posted 09-05-2000 01:14 PM
   
This weekend, Mike and I were talking about the resonance Mike's exhaust was giving him at around 2000 rpms, and I mentioned a bow-tie friend of mine just solved the same problem on his IROC by installing an insert.Well, Mike, as promised, here's the info... What my friend used was a disc insert made by Car Chemistry Inc., and sold by Summit. I had thought it was a spiral silencer, but I was wrong. They actually use two or three discs with offset holes to quiet the sound. My friend used part # CC1-3D103R, which is for a 3" inside diameter pipe. That part number is a 3 disc unit, and the price is $54.99 each. The manufacturer says it does not hurt horsepower, and my friend said he didn't feel a horsepower loss. This item is designed to be slipped inside header collectors, or inside exhaust pipes downstream of the catalytic converter[s]. I checked Summit on-line and they show the manufacturer, but the search engine didn't recognize the part number. It is in the Summit catalog, though. ------------------
SteveLaRiviere/Administrator
MCA # 47773
'72 Mustang Sprint 351C 4V/FMX/4.30 Trac-Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC/CD4E IP: 64.208.65.237 |
Stewart
Esteemed Member Posts: 1826
From:Monterey, CA
Registered: Apr 2000
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posted 09-05-2000 01:24 PM
Steve, does it affect ONLY the 2K rpm drone? Or does it affect the throaty growl of the exhaust too?How about at WOT? Stewart IP: 152.163.197.212 |
SteveLaRiviere
Big Kahuna Posts: 7360
From:Saco, Maine USA '72 Mustang Sprint 351C '94 F-150 XL 5.8L and a '97 Probe GTS 2.5L DOHC
Registered: May 99
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posted 09-05-2000 01:29 PM
It quiets the exhaust at all rpms. My buddy's IROC still sounds nice and has a nice growl with it, though.------------------
SteveLaRiviere/Administrator
MCA # 47773
'72 Mustang Sprint 351C 4V/FMX/4.30 Trac-Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC/CD4E IP: 64.208.65.237 |
71ragtop
Forum Kahuna Posts: 1102
From:Atlanta, GA
Registered: May 99
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posted 09-05-2000 04:28 PM
Thanks Steve! You are truly a man of your word.As Steve found out first hand, my MAC cat-back exhaust sounds great, except at 2000rpm where it will resonate rather loudly. I'll look into these and let you know if I go that route. Who knows, if adding the labor makes it end up being in the same price range, I might just throw some 3.73 or 4.10 gears in and keep the RPMs up over 2K.  Hmmmm...decisions decisions... Mike IP: 38.30.8.137 |
Stewart
Esteemed Member Posts: 1826
From:Monterey, CA
Registered: Apr 2000
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posted 09-05-2000 07:45 PM
Thanks for the info Steve. While the 2K drone that is produced by my cat-back Flowmasters doesn't bother me too much, my curiosity was piqued when I thought there might be a way to "tone" it down without affecting the rest of the growl.Mike, that's one method....or just pump up the volume! Stewart IP: 152.163.201.78 |
71ragtop
Forum Kahuna Posts: 1102
From:Atlanta, GA
Registered: May 99
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posted 09-06-2000 12:23 AM
Pumping up the volume is my current resolution. Doesn't work when I have riders though...tender ears and all that ya know.Funny how when I'm riding alone I don't notice it as much. Wonder why that is? Just cause the family knows I'm home before I even turn down our street... Huh, did you say something? Mike IP: 38.30.8.80 |
Stewart
Esteemed Member Posts: 1826
From:Monterey, CA
Registered: Apr 2000
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posted 09-07-2000 10:34 AM
quote:
Originally posted by 71ragtop:
Pumping up the volume is my current resolution. Doesn't work when I have riders though...tender ears and all that ya know.Mike
Mike...just give 'em ear plugs to wear!
Stewart
IP: 205.188.193.189 |
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