DynoMax Mufflers
#733450
06/25/10 05:29 PM
06/25/10 05:29 PM
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Joined: Jan 2003
Posts: 1,014 LEE, MASS
TOMRR
OP
super stock
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OP
super stock
Joined: Jan 2003
Posts: 1,014
LEE, MASS
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Anyone have a set of DynoMax UltraFlo Welded mufflers on their Mopars And How do you Like Them? I have 40 series FloMasters on my 69RR, can not stand the Drone sound you get from them
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Re: DynoMax Mufflers
[Re: 5spdcuda]
#733458
06/25/10 11:03 PM
06/25/10 11:03 PM
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Joined: Jun 2008
Posts: 768 Maryville tn
67coronetman
super stock
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super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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So i have never used the Dynomax do they have a good sound and whats the cost i will be running 3" with turn downs.!
Old car are me......
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Re: DynoMax Mufflers
[Re: TOMRR]
#733465
06/26/10 09:32 AM
06/26/10 09:32 AM
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Joined: Jul 2007
Posts: 271 MO, USA
Tom Hand
enthusiast
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enthusiast
Joined: Jul 2007
Posts: 271
MO, USA
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Tom, before you pop for the UltraFlo Welded, look into the new Dynomax VTs. You could run the 17956 and have a sweet sound, no drone, and plenty of noise at WOT. They really are pretty darn slick. We have three sets we are playing with right now. And, there is rebate on them too so for $75 you get state-of-the-art technology, great sound, no drone, and all stainless steel body and tubes. Tom
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Re: DynoMax Mufflers
[Re: Tom Hand]
#733467
06/26/10 04:26 PM
06/26/10 04:26 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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Quote:
Tom, before you pop for the UltraFlo Welded, look into the new Dynomax VTs. You could run the 17956 and have a sweet sound, no drone, and plenty of noise at WOT. They really are pretty darn slick. We have three sets we are playing with right now. And, there is rebate on them too so for $75 you get state-of-the-art technology, great sound, no drone, and all stainless steel body and tubes. Tom
Please post a sound clip!!!
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Re: DynoMax Mufflers
[Re: Tom Hand]
#733468
06/26/10 04:53 PM
06/26/10 04:53 PM
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Joined: Apr 2008
Posts: 1,285 Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
Tom, before you pop for the UltraFlo Welded, look into the new Dynomax VTs. You could run the 17956 and have a sweet sound, no drone, and plenty of noise at WOT. They really are pretty darn slick. We have three sets we are playing with right now. And, there is rebate on them too so for $75 you get state-of-the-art technology, great sound, no drone, and all stainless steel body and tubes. Tom
I plan on running Dynomax mufflers on my Road Runner. But I'm not sure I like the idea of a spring/back pressure operated butterfly valve in my muffler. I'm sure it works fine when new, but what happens if/when the valve corrodes shut due to condensation/soot? What happens if the spring/linkage breaks?
Just throwing it out there...
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Re: DynoMax Mufflers
[Re: CompSyn]
#733469
06/26/10 07:23 PM
06/26/10 07:23 PM
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Joined: Jul 2007
Posts: 271 MO, USA
Tom Hand
enthusiast
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enthusiast
Joined: Jul 2007
Posts: 271
MO, USA
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CS, very good questions. With them constructed from all st. st. parts, corrosion is not as big of worry to me. They are cheap enough right now that I could live with the worry of the spring eventually fatiguing. I think it is 302 or one of the spring alloys of st. st. so it likely is long lived as well.
Seriously though, we just put a set of 17956's on a 12 second 68 360 barracuda. I have two more with the weaker spring (17156) coming this week and we will do a comparison between them to see what affect the spring rate has on back pressure and sound level at various RPMs. It is weird that such a short muffler, with a 3" core with minimal packing, has such little resonation and roar.
I have had 340s since 1978 and they are very tough to keep from resonating from 1800 to 2300 RPM. This muffler seams to prevent that roar very nicely.
As soon as we get the whole system sealed and leak free, I will try to get some very good sound recordings to share along with the data we plan to collect. Should get measurements later this week.
Tom Hand
Last edited by Tom Hand; 06/26/10 07:23 PM.
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