Dual Exhaust on a stepdown

hudsonguy

I know I've asked about this before, but I'm still undecided on how to build my new exhaust system.



For Christmas, I got the Hudson a new set of Clifford shorty dual headers, which by the way only took a month to get, with the ceramic coating and during the holidays, no less. Great quality looking parts. Still have to verify the fit on my engine though. Anyway, even though I bought a Y-pipe with the headers, I'm still not quite sure how I want to go. It seems I have several options available;



1) The Y-pipe would take the two 2-1/4" pipes from the headers down to a single 2-1/4" diameter, which would then easily route through the cross-member, and out the back in the stock location.



2a) Keep it a true dual system, and try to squeeze two pipes through the crossmember, and then out the back, either with two pipes side-by-side on the passenger's side, or continuing one so that it exits on the drivers side, which would give it that 'balanced' look from the back. (Note: I thought one way to get two pipes thru the crossmember would be to use two of the 'round-to-oval' pipes that some low-slung street rods use, but unfortunately they don't offer anything compatible with a 2-1/4" diameter.)



2b) Dual system that bypasses the cross-member altogether, and exits in a custom location. hornet53 recently posted pictures of this style that he used on his car.



Am I missing any other ways of doing it? I know there must be some experiences that people have with header exhaust, and would appreciate any and all opinions and/or advice.



The one thing I don't really want to do is to cut out the cross-member, which I've also seen done on some cars. I'd like to put a decent 'Flowmaster' muffler(s) on it that won't be too loud, but give it a nice mellow tone.



Whichever route I go, I'll have the work done at a local exhaust shop that does specialty cars all the time. I'll probably slap on a couple of flex pipes and make a temporary system that will allow me to drive it to the shop in the spring.



Thanks for the help,

Doug

Unknown

I fit a single 2-1/2" system in the original location using a flowmaster universal tailpipe kit and tubing purchased from my local exhaust shop. Works pretty good.



The trick in a dual system would be getting the pipe from the outside of the framerail back to where the stock system is. Might have to make a pipe that comes under and follows the stock lines.



I have a friend with a 460 in his hudson and he said that he fit two 1-7/8" pipes in the stock locations.



I could post some pics of my setup if it would be any help to you.

464Saloon

I also ran a single 2 1/2 on my car but with a Walker Dyno Max.

PAULARGETYPE

Hi I Had Dual Pipes Installed On My 50 Pacemaker Using A Manafold Made By Danny Barier From Tenn. He Cast The Factory Hudson Nascar Lower Part That Was Used Way Back Then He Also Had It Cast To Fit The Regular Manafold On The Top End It Works Great And Looks Even Better I Then Took It To A Local Muffler Shop And They Fit Up The Pipes Not Cutting Any Frame But Fitting Both Pipes Through Then On To Both Sides With Twin Chrome Tips It Is Just What I Had Hoped For



HERE IS A GOOD PHOTO OF THE MANAFOLD ON THE ENGINE WHEN IT WAS INSTALLED IN THE CAR



http://groups.msn.com/HudsonEssexTerraplaneBulletinBoard/50hudsonpcvrestobaby.msnw?action=ShowPhoto&PhotoID=765

shadetree

PAULARGETYPE wrote:

Hi I Had Dual Pipes Installed On My 50 Pacemaker Using A Manafold Made By Danny Barier From Tenn. He Cast The Factory Hudson Nascar Lower Part That Was Used Way Back Then He Also Had It Cast To Fit The Regular Manafold On The Top End It Works Great And Looks Even Better I Then Took It To A Local Muffler Shop And They Fit Up The Pipes Not Cutting Any Frame But Fitting Both Pipes Through Then On To Both Sides With Twin Chrome Tips It Is Just What I Had Hoped For



HERE IS A GOOD PHOTO OF THE MANAFOLD ON THE ENGINE WHEN IT WAS INSTALLED IN THE CAR



http://groups.msn.com/HudsonEssexTerraplaneBulletinBoard/50hudsonpcvrestobaby.msnw?action=ShowPhoto&PhotoID=765

Hi Paul Do you get the split manafold sound with this adapter added to the regular exhaust mamafold? are these adapters available now? thanks, Melvin

hudsonguy

PAULARGETYPE wrote:

Hi I Had Dual Pipes Installed On My 50 Pacemaker Using A Manafold Made By Danny Barier From Tenn. He Cast The Factory Hudson Nascar Lower Part That Was Used Way Back Then He Also Had It Cast To Fit The Regular Manafold On The Top End It Works Great And Looks Even Better I Then Took It To A Local Muffler Shop And They Fit Up The Pipes Not Cutting Any Frame But Fitting Both Pipes Through Then On To Both Sides With Twin Chrome Tips It Is Just What I Had Hoped For



HERE IS A GOOD PHOTO OF THE MANAFOLD ON THE ENGINE WHEN IT WAS INSTALLED IN THE CAR



http://groups.msn.com/HudsonEssexTerraplaneBulletinBoard/50hudsonpcvrestobaby.msnw?action=ShowPhoto&PhotoID=765

Paul,



What diameter pipes are you using to fit through the cross member?

[Deleted User]

Hey Hudsonguy,

take a look on my site I asked to Tristandaz to post pics of his dual exhaust on the 54 Hornet he used to own. Shows a pretty good setup which may guide you.

http://www.hudsonmotorcar.org/coppermine/thumbnails/album=20.html

dave s

I have had dual exhaust installed on both headers and 7x manifolds. My local exhaust shop had no problem running 2" pipe side by side on right side of vehicle in original location and bending one pipe to left side behind gas tank. Paint that pipe with high temp flat black and it disapears.:)

PAULARGETYPE

My Pipes Are 2 ' And Yes You Gwet That Split Manafold Sound

dave s

FWIW I suggest using steel pack mufflers unless you can use at least 24" glass packs. The short glasspack mufflers will have a popping sound with 6 cylinder engine.

[Deleted User]

Here are some closeups of the adapter.













They are good pieces and a definite improvement over the stock outlet. The restriction of the smallish single outlet is eliminated. They are not a "true dual" as bolted on, but can be made that way by welding an extension onto the divider inside the adapter and extending it up through the heat box, or by welding a divider into the exhaust manifold the meets the adapter. The flapper in the exhaust needs to be worked on to clear the adapter divider in a "bolt on" application or completely eliminated if you weld in a true dual divider.



I do want to clear up some things regarding these pieces.



1) Don't call Danny Barrier, he doesn't make these anymore. I bought out his cache of Hudson parts and the patterns etc. for the adapter were in the deal. I have the adapter and associated core boxes, patterns, templates. I really wasn't looking to get into making these, but here I am.



2) The foundry that was casting these has gone out of business and I'm having a very difficult time finding another foundry to make them. I'm not anywhere near a hotbed of casting shops, and while I can find other foundrys in other states - the associated shipping is cost prohibitive. It costs me an average of $25 to ship ONE adapter to a buyer. $50 in shipping, once from the foundry and again to the customer + the casting charge per piece makes things really thin on a price folks are willing to pay. Its the weight of the pieces that drive the shipping. I'd rather be able to pick them up at a foundry in person for reasons of quality and cost control.



3) I'm not going to be making anymore of these anytime soon. They sell well at the price Danny and I were charging. I am out of adapters from a previous run. Paul (PAULARGETYPE) ran off with the last ones I had at the Pigeon Forge meet. I had 5 left finished and one unfinished, they all left my hands within minutes of arriving at the swap meet. The demand for them is good, the future supply at an affordable price is not so good.



4) The patterns etc are for sale. I know there are some capable members closer to job-foundrys than I am who can do better than I in both price and profit from these adapters. I would really like to see them in more capable hands.



Mark

SuperDave

Mark,

Charley Yapp of "Secrets of speed" has had a number of parts cast for Model A Ford Speed equipment. From flat head cylinder heads to complex overhead valve heads. He may have some insight into who does a reasonable job of casting. By reasonable I mean a GOOD compromise between cost and quality. His web site is http://www.secretsofspeed.com/ You can contact him from the web site...Give him a ring.. By the way, I bought one of those adapters from Randy before he sold out. Was going to use it on Mac's 54 but he took it out of state, So will use it on my 49 .

Nice meeting you at Pigeon forge. I was the one looking at the green steering wheel .

Dave w. Fl

[Deleted User]

SuperDave wrote:

Mark,

Charley Yapp of "Secrets of speed" has had a number of parts cast for Model A Ford Speed equipment. From flat head cylinder heads to complex overhead valve heads. He may have some insight into who does a reasonable job of casting. By reasonable I mean a GOOD compromise between cost and quality. His web site is http://www.secretsofspeed.com/ You can contact him from the web site...Give him a ring.. By the way, I bought one of those adapters from Randy before he sold out. Was going to use it on Mac's 54 but he took it out of state, So will use it on my 49 .

Nice meeting you at Pigeon forge. I was the one looking at the green steering wheel .

Dave w. Fl

I remember you Dave, and it was a pleasure to put a face with a name.



I still have that steering wheel, by the way. But no more adapters!



Mark

hudsonguy

As far as fitting my Clifford headers on the car, I've 'dry-fitted' them and they appear to fit about perfectly. The only modification I've had to make is to put a small indentation in my breather pipe to clear the number 5 pipe. Other than that they clearly will pass inside the frame right thru the original pipe's location, and mate up to the head perfectly. No clearance problems with either a single or dual intake manifold, either. Nice product for anyone considering Clifford's latest offering.



I decided for now to hook up some cheap flex pipe to the headers, thru my y-pipe, and connect it to the stock exhaust. I'll use this makeshift system just to be able to drive it to the exhaust shop this spring.



As far as what to do then, I'll probably make that call at that time. I'll have to judge the ability of the guy making the system, and his confidence in routing either a single or dual system thru some narrow spots.