My '36 is going to need an exhaust system in the next few months. Merc 289 motor and I have some shorty headers on there. Some friends want me to run strictly pipes with no mufflers, 2.5" to the rear end, then 2.25" out the back of the fenders (no exposed exhaust tips for me.) The reasoning is that with all the bends and the reduction, it's not going to be that loud and will keep a good rumble. I am considering having dumps hidden inside the front fenders so it can be good and loud when I want it to be. Does speedway or someone sell the plate and the pipe connection for them? If I do that, should I go ahead and run some kind of muffler? Any suggestions? Dad is hell bent on these round stainless Magnaflows and I keep telling him they don't really "fit" the car.
You could build your own dumps pretty easy, if you go with mufflers, try the Smitty's mufflers, a couple people I know have them and love em.
Django, Run the pipes into dump tubes about 30" long, then come off of the tubes and out the back, and don't run any mufflers. You will love the sound.The dump tubes give it a deep rumble and keeps it from sounding ratty or tinny, this will give you the best sound with a flathead.--TV
TV, but will it work with a 289 too? Aren't 289/302s generally louder than a flathead? Or am I on crack??
We took the mufflers off my buddies 51 Merc. and it wasn't that loud. 2" all the way. Just my opinion but with less than 300 CI...2.5 and 2.25 is over kill and wont sound like a flatty. To get the classic sound we run 2" to the glass packs and then 1.75 tail pipes. Bigger isn't always better.
I think we all thought it was a flathead. It really depends on how loud you want it to be for normal operation. Loud is good but after a while,it can get to you on long trips.
I had a similar exhaust made for my mercury ( SBF 302 motor ) with the pipes ending right infront of the back tires , and I had to go back and have them add some 12" steelpacks up by the engine to quiet it down . I couldnt drive it without my ears ringing . I had a smaller diameter pipe , which would make it rap differently , but I think with the huge size you want to use it would be unbearable . If I had a building on my saide of the car , or even another car next to me , the sound would tripple by echoing off of them . In my 54 I had no muffs , but the pipes exited out the back through the bumper and it wasnt very loud inside t he car . I dont know whatit was like behind me , I was never back there but I was told t hat it sounded pretty mean .
Sorry for the confusion. Maybe I should go with the Smithy's then. Do they have just that usual glass pack sound on a small block?
on my 54 i had a 260 ford small block with no mufflers at all and I thought it sounded great . I'm not a big fan of smitthy's , they are too quiet in my oppinion . I would rather use Cherry Bombs anyday at a 1/3 the price and alot better sound . The ones on my Merc are just genneric mufflershop steelpacks , and I can make it roar when i want to but for the most part it is quiet and tame around town .
Sorry I did think it was a flathead.But all is not lost,use the smittys and cut the back off and remove or replace packing to your like. Tack the end on and try it,If you don't like it do it again.When you are done weld tip on and you have the sound you like. I have done this many times and it is great.--TV
I wouldn't run w/o mufflers of some type, but I'm old! You can change the tone a lot by changing the size of the last few feet of tail pipe, weather you run muffs or not.
I ran a small block ford with no mufflers, ear shattering LOUD! I eventually ended up doing 2" duals with Smithys and Megs' tips and I still think it's the sweetest sounding car I ever had.
slip in a set of Harley baffles 2"x12"L] two per side into the 2" or larger pipe-tack weld- put one between motor and rear end and one after rear end/ they cost 8.95 each from www.Jirehcycles.com
[ QUOTE ] I wouldn't run w/o mufflers of some type, but I'm old! You can change the tone a lot by changing the size of the last few feet of tail pipe, weather you run muffs or not. [/ QUOTE ] Ha ha, if Dad had his way, you wouldn't even hear the thing running at a stop sign! This whole debate started right when A) a friend let me drive his uncorked '32 and B) dad decided I should get a full stainless exhaust system. He ordered the mufflers already, but I refused to pay for them. He's still shaking his head at my bias ply tires. Parents. God bless em!
The way I'm gonna redo the exhaust on my car is run a good, quiet exhaust, all the way out the back, and then install cutouts for when it's time to play. They're expensive, and definitely not TRADITIONAL, but if they're gonna be hidden check these out! Quick Time Performance exhaust cutouts
What about "turbo-tubes"? I think Thrush makes them. They look just like a piece of exhaust pipe with a bunch of dimples on the outside. I don't know what's inside. Anyone here use them?
i have the turbo tubes behind a sbc in a 33 chevy coupe. the pipes fit in tight places, don't drag, sound real good at idle, roars like a pro stock where you hit it! the police hate them! use a cross over pipe.
Chad, I have glass packs on my A. It has a 289 in it too. It is not loud at all. Just a nice low key rumble.
[ QUOTE ] You could get some of the cast iron cable actuated cutouts from Jc Whitney. -Jesse [/ QUOTE ] Here are the Cut outs from JC Whitney That has definite possibilities. Anyone have any experience with them? How well do they seal up? Definitely cheaper than the electric ones!
The thing about the cable operated ones are 1) They leak... BAD 2)theay are all cast iron, which equals rust, so they freeze up 3) they are only 2" OD, 1-3/4" ID, which means NO power
I suspected that they wouldn't be too hot... Tinbender, the more I look at your cutouts, the more I like them. Dad would really flip if I suggested that though! Without having them protruding out any sheetmetal or running boards holes, what would be the convenient placement of the cut out?
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