Re: Exhaust size help
[Re: DrCharles]
#2155048
09/15/16 01:09 PM
09/15/16 01:09 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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any pipe restriction (less than 3") with your 3" collectors from the collector flange rearward hurts you and not sure how much I go with this but many have said that reducing to 2&1/2 for tailpipes is acceptable cuz of the gasses cooling & shrinking & looseing velocity. #1 is noise management (how much are you willing to tolerate) VS max output. I think the best system is 3" cutouts right at the collectors either vacuum or electrical then T'd from there with 2&1/2" rearward with restrictive (quiet) muffs. this way the power and the noise is under your control & only there when you want (need) it. We ain't teenagers anymore. with the money in the hands of a (neutral) third party you open it up & ten seconds later it is all over ex the crying (collect your money/shake their hands/call it good!). they will never know what hit em
live every 24 hour block of time like it's your last day on earth
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Re: Exhaust size help
[Re: DrCharles]
#2155126
09/15/16 03:01 PM
09/15/16 03:01 PM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Use the three inch if your after max performance, I would mount the muffs as far back as possible to allow the exhaust gases to cool and that will make it a tiny bit quieter also. My last two cars with three inch pipes had the muffs mounted behind the rear end between the 1/4 panels and the rear sub frames exiting with 45 degree turn downs at the rear bumper My next car will have 3.5 inch pipse all the way back with those muffs mounted the same way
Last edited by Cab_Burge; 09/15/16 03:02 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Exhaust size help
[Re: Gerald l]
#2155334
09/15/16 09:59 PM
09/15/16 09:59 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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when the time comes if you need more quiet You can add a pair of glasspacks in the tailpipes alongside the leaf spring. shop carefully as alot of em neck down significantly on the ends where the nipples are welded to the main case and the louvers are punched inward which hurts flow & going with 3" ones is an option
live every 24 hour block of time like it's your last day on earth
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Re: Exhaust size help
[Re: feets]
#2155718
09/16/16 01:57 PM
09/16/16 01:57 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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thanks for posting that video Feets. EDIT I was thinking it also said that below 3500 it is way less of an issue. for the street you've gonna be under that quite a bit of the time
Last edited by RapidRobert; 09/16/16 09:51 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Exhaust size help
[Re: gch]
#2156939
09/18/16 07:01 PM
09/18/16 07:01 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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if I had a 3 into 2&1/2 system up & running right now I would seperate it at that junction(s)/pop in some ear plugs/see what the butt dyno says
live every 24 hour block of time like it's your last day on earth
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