pdq67 wrote:Please consider using, "static mixing", technology here if you want to make your exhaust pipes straight through. About 6 or 7 static mixer flutes in a 20" or so long 2.5" dia. straight pipe down each side and go!! If I had the needed welding equipment, I would have this under my car now!!
Otherwise, I like the way, "old-school", WDT, smooth perforated inner pipe REAL glass packs! Suckers are straight through so no back pressure loss at all, imho. Just like DV has shown us. If they are too loud, just add short ones in your exhaust system to act as resonators OR parallel double up on the long ones.. I love their way old school "cackle"!!!
And you haven't lived until you have heard a pair of, "smitties", on a way hopped up 261" 6-banger with split manifolds going up and down through the gears!!
It will raise the, "hair on the back of your neck"!!!
AND you will never forget the sound!!
F**, talk about F-1 crap, no a split-6 turns me on!
pdq67 wrote:pdq67 wrote:Please consider using, "static mixing", technology here if you want to make your exhaust pipes straight through. About 6 or 7 static mixer flutes in a 20" or so long 2.5" dia. straight pipe down each side and go!! If I had the needed welding equipment, I would have this under my car now!! Otherwise, I like the way, "old-school", WDT, smooth perforated inner pipe REAL glass packs! Suckers are straight through so no back pressure loss at all, imho. Just like DV has shown us. If they are too loud, just add short ones in your exhaust system to act as resonators OR parallel double up on the long ones.. I love their way old school "cackle"!!! And you haven't lived until you have heard a pair of, "smitties", on a way hopped up 261" 6-banger with split manifolds going up and down through the gears!! It will raise the, "hair on the back of your neck"!!! AND you will never forget the sound! A split-6 turns me on! You talk about ,"walking the dog", ................
Install WDT perforated inner pipe REAL glass packs! Too loud, then add another pair, end to end, to each side. The suckers are true smooth straight through pipe mufflers here! NO back pressure at all. BUT RUN THE TAIL PIPES OUT PAST THE REAR BUMPER!! Have you ever thought about why the old WDT real glass packs aren't included in any of the muffler tests??? Same deal with why the old Holley 300-36 intake or Weiand 8016 Stealth aren't included in intake manifold tests!!
pdq67 wrote:Me thinks that you are way over thinking this, but, JMHO... Please read me again.. The best we can have are, "straight pipes", but John Law won't allow them. And the old WDT perforated smooth inner pipe REAL glass packs are as close as we can get.
pdq67 wrote:I have two mufflers down each side now, an 18" and a 12" x 2.5" cheap JCW turbo's that exist stock on my '67 Camaro. They were loud on my 406!! And if I live long enough, I am going with as long a muffler string as I can get under my car of the WDT glass packs. Say as long under my floor boards and then cross-wise from each side back by my gas tank like stock. AND the SOB will be straight through!!! I thank DV for his picture of just how real glass packs perform vs box mufflers!
As the old song, "I want to be Bobby's Girl", runs through my mind!! That young Lady could f** sing!!! And don't forget, "Paul and Paula"!!! "Hey, Hey, Paul,---------------"
pdq67 wrote:"Install WDT perforated inner pipe REAL glass packs! Too loud, then add another pair, end to end, to each side. The suckers are true smooth straight through pipe mufflers here! NO back pressure at all. BUT RUN THE TAIL PIPES OUT PAST THE REAR BUMPER!! Have you ever thought about why the old WDT real glass packs aren't included in any of the muffler tests??? Same deal with why the old Holley 300-36 intake or Weiand 8016 Stealth aren't included in intake manifold tests????????
PS., as I like ta say, "You gotta Dime"....
READ ME AGAIN!!!
pdq67 wrote:WDT glass packs don't have anything protruding into the gas stream. They are smooth, perforated inner pipe jobbers! That's why I like them!! Cherry-Bombs and Smitties as well as Purple Hornies, they have sawed louvers in them that protrude into the middle of them if not mistaken?..
pdq67 wrote:Harry, In all respect, just install the old WDT smooth perforated inner pipe glass packs and go!! Too loud, then add either two, "y'd", side by side OR another behind each and go.. AND with tailpipes out past the rear bumper!! I had three glass packs under each side of my old hopped up 409 so know!!
Tell me how you really feel about the glasspack mufflers.
Here's my issue with the glasspack type mufflers with large pipe diameter and small case diameter. The don't take out much of the low frequencies. The case cross-sectional area is too small compared to the pipe cross-sectional area. They do take out higher frequencies, I give them that. But in my opinion, the new Borla and Magnaflow straight-thru mufflers also use stainless steel wool and fiberglass packing to take out those higher frequencies, but because the case cross-sectional area is large compared to the pipe cross-sectional area, they also muffle some of the lower frequencies. It's as if all the muffler makers who spend on R&D concluded that glasspacks do one thing really well and then incorporated a glasspack muffler into all of their large-case mufflers that have big expansion chambers. Given that it's 2017, why would anyone use a basic glasspack muffler that's got a case diameter that is only slightly larger than the pipe diameter, instead of those modern Borlas and Magnaflows and the like?