Quietest muffler???

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Model T Ford Forum: Forum 2012: Quietest muffler???
Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Hoshield on Monday, August 20, 2012 - 11:02 pm:

What have people noticed as being the quietest exhaust system? Cast iron ends muffler?

Does the cast iron ended muffler with built in brackets transfer engine noise to the frame?

Does the asbestos-like wrap do anything for noise, or just for heat?

This will now be going under a pickup bed.
Should I consider one with a tail pipe?

Thanks
Dennis


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Hoshield on Monday, August 20, 2012 - 11:30 pm:

I WAS going to cancel this thread (I forgot to search the forum for 'quiet mufflers' first!) ... but the hit I found was from 2008. Lots of ideas and suggestions ... seemingly most without regard to having proper back pressure. Is that an issue on a T? Often, some amount of back pressure is suggested. The packing nut fit seems to be a bit of an issue.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Allan Richard Bennett on Monday, August 20, 2012 - 11:48 pm:

Dennis, the cast iron ends will outlast the pressed steel ends by a long shot. With stainless tubes your muffler should outlaast you!

Adding a tailpipe is a matter of choice. I have added two, one to deflect all the crud from a rear mounted fuel tank, the other to get the exhaust gasses past the spare tyre under the car. On only one car, my 1912 van is there just the standard tailpipe attatched to the muffler end.

If the packnut is used to pull a mis-aligned flange up to the manifold, stresses are added to the manifold which will cause it bend as it heats and cools until the stresses are relieved. Then the manifold will no longer fit.

Hope this helps.

Allan from down under.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Rob Heyen - Nebraska on Monday, August 20, 2012 - 11:48 pm:

Three of our Fords had/have cutouts. Two of them still have the original asbestos wrapped mufflers. It appears to me that once "out of town" it was OK to use the cutout, reducing/eliminating back pressure. I don't know how this affects performance, but "in the day" it seems cutouts were thought to be a performance enhancement.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Hoshield on Tuesday, August 21, 2012 - 12:09 am:

Allan ....
Good deal. I am surprised I haven't seen gaskets being used .. either one side of the pipe flange or the other. Apparently, they are just clamped down tight with the packnut? Seems as the exhaust manifold threads aren't the best on mine. It was hard to tell on my old pipe, as it was swiss cheese.... holes all over it.

Rob .. I've seen lots of add-ons that utilize the cutouts .. whistles, etc. I have to say I've never heard one, but sounds like the cutouts were used to make even MORE noise, as well!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Matthew David Maiers on Tuesday, August 21, 2012 - 12:10 am:

ive always wanted to try one of the straight through mufflers made for high performance use.

i use hooker aerochamber mufflers on my 75 ford truck and they sound great, and you can look straight through them.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Erich Bruckner, Vancouver, WA on Tuesday, August 21, 2012 - 12:51 am:

Straight pipes on a T are sorta hard on the ears unless you are a tough M-500 driver. Also, from folks I trust, seems an open pipe may not be the best performing set-up. Seems the T motor likes a bit of back pressure at higher RPMs. So I don't really see the performance payoff to justify the extra noise. Did I make extra holes in the baffles of my cast end muffler? Yes I did. May only make me feel better but could be a good compromise.

Anyone have any further info/experience on that?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Matthew David Maiers on Tuesday, August 21, 2012 - 01:35 am:

it would be interesting to see the power difference between the straight pipe and original muffler. and other mufflers.

didnt somone recently set up a dynometer?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Tuesday, August 21, 2012 - 07:36 am:

I have a unique muffler/cut-out set up.

This is my car http://www.mtfca.com/discus/messages/257047/297708.html?1340626846 There's a few pictures in there that are messed up and not what I originally posted, but if you scroll down to the 4th and 5th pics you can see the muffler set up. There's a wire that runs from the end of the rod on the fat tube up to the floor board and it has a ring on it. When I pull the ring and hook it forward, that fat section of pipe is wide open and there is ZERO back pressure and plenty of throaty noise. With the ring back, the flap on the big tube is closed and the exhaust exits through that smaller tube angled down, the smaller tube also has baffles in it. It's very quiet, almost oddly quiet that way. There's definitely a noticeable difference in acceleration: with the cut out open it zooms up to speed. However, when cruising at speed, I can open and close the cut out and I can't tell any difference in speed. Once I get the car all back together and running again, I'm hoping to do a mileage test and run one full tank of gas with it closed and one full tank with it open and see if there's much difference.

Of note, that particular silver contraption was thoroughly rusted through when I got the car, I welded up a completely new one to be as close of a copy as possible. The new one works and sounds great open and closed. If I can ever sell my extra brass radiator, I'm going to get the dual-exhaust manifold and adapt my muffler set up to take 2 pipes.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Peter Claverie on Tuesday, August 21, 2012 - 07:48 am:

I needed a muffler on the T I had in the '50's. I went to a local muffler shop, and they found that a Jeep muffler had the correct size input pipe to weld directly to the T's exhaust pipe. It made the car very, very quiet, but of course eliminated the characteristic ticky-ticky sound of the Model T. So, if it's quiet you're looking for and don't care about sounding authentic.........


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Tuesday, August 21, 2012 - 11:06 am:

You don't need to get it too quiet. All the rattling will cover up the exhaust sound.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Smith on Tuesday, August 21, 2012 - 11:55 am:

I would like to see the vendors sell period correct exhaust pipes for our cars. Yes, the current ones work, but don't fit that good.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Joe Van Evera on Tuesday, August 21, 2012 - 03:10 pm:

I have a neat little exhaust cutout on my '15. It has the flapper valve that rotates into the pipe, thereby routing most all the exhaust down and out. I have no other pipe hooked to the outlet so I assume there's no back pressure at all. When we were in Minnesota in 2011, Tom Graham set up his dynometer and "tested" a lot of cars. When he tested mine, I had him do a final test with my cut out open (noisy). Guess what? Made absolutely no difference!!! I will however, continue to pull it open near the top of the hill when my rpm's fall off, because even though it doesn't give me any more power, I've convinced myself it helps! Ha ha... Seriously, it's great fun to open the cutout and retard the timing and come putting into a parking lot. Gets a lot of smiles.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Matthew David Maiers on Tuesday, August 21, 2012 - 03:28 pm:

it might not get you any horsepower, but im pretty sure it makes the engine more responsive.

question: on your 15 were you running a holley G?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Joe Van Evera on Tuesday, August 21, 2012 - 08:20 pm:

Matt: No, that's on the shelf. I run a "modern" NH on advise of Bill Barth.
You know, I'll have to "play around" with the responsive/acceleration thing. I never gave that part of it much thought. I was only thinking of any increase of power at a constant rpm. Joe


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Wednesday, August 22, 2012 - 08:07 am:

I'd really like to get one of the aluminum high-flow intake manifolds. My understanding is that the intake manifold is the limiting factor in the engine's breath-ability. It's fighting harder to suck air in than to push it out. I suspect that with the high-volume intake the limiting factor could jump to the exhaust. However, it may turn out that a Model T engine just doesn't turn enough RPM's or move enough air for the exhaust to really be a factor. A newer engine idles at 750, 800 RPM, that's almost halfway to red line for a Model T.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Wednesday, August 22, 2012 - 11:28 am:

There is a aluminum manifold on ebay right now.
http://www.ebay.com/itm/300765836168?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m142 3.l2649

Back to mufflers, I have a set of early cast ends that were made for a tail pipe (3 bolt style) that I have been thinking about grinding the broken ears off and using the early style steel brackets so I could add a tail pipe. I need someplace to mount a spark plug if you get my drift! :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Garnet on Wednesday, August 22, 2012 - 07:57 pm:

Dennis, obviously the quietest muffler is the one with the best quality bearings:

Garnet


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Thursday, August 23, 2012 - 06:52 am:

Nice, I lol'ed.

Completely OT - cool gloves. I tried really hard but just could not get into wearing them. They make my hands sweat, I can't feel what I'm doing, and I'd end up tearing them anyway.

I get the appeal because I get nastier working on the T than any other car. I guess it's something about 100 year old grease and gunk. Sometimes I can wash my hands 2 or 3 times and they're just going to look rough and nasty for a few days no matter what. Maybe that's a topic for another thread, how many folks wear gloves of some kind?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dennis Hoshield on Thursday, August 23, 2012 - 07:41 am:

Seth:
"Sometimes I can wash my hands 2 or 3 times and they're just going to look rough and nasty for a few days no matter what."

You can be a rider, or a worker. The rough and nasty look is a badge of honor for the worker. ;-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Thursday, August 23, 2012 - 10:01 am:

Lol, it just doesn't always go over well at my "Business Casual" cubicled office job. It doesn't bother me because I know it'll go away in a few days if I'm not working on the car, but I get a lot of "Whoa, what's wrong with your hands?"


Top of pagePrevious messageNext messageBottom of page Link to this message  By Noel D. Chicoine, MD, Pierre, SD on Thursday, August 23, 2012 - 01:56 pm:

I also hate wearing those gloves for engine or machine work. My hands sweat and they get torn spinning a nut on a bolt. My job also requires clean hands! I start with warm water and some Tide powder detergent, then follow after a rinse with Dawn dishwashing detergent and a soft bristle brush. A nail file under the nails is a must.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Doug Money - Braidwood, IL on Thursday, August 23, 2012 - 03:04 pm:

I found GoJo with pumice and a nail brush do pretty good.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Wayne Sheldon, Grass Valley, CA on Friday, August 24, 2012 - 02:15 am:

I also use Tide powder. What can I say? It works. I guess now it has the endorsement of a doctor!
As for mufflers and back-pressure. Many speedsters have run for many years with open straight pipes. They seem to do okay.
For my boat-tail, I want a throaty quiet. I started with a gutted T muffler. Too quiet, not throaty enough. I then went to a straight pipe under the car with a baffle about half way. Now it is throaty enough, but a lot louder than I want it. Guess I will have to try again. Maybe next year.
Drive carefully, and enjoy, W2


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