Need help...Three Exhausts in 77??

Sashi,

Here is a photo of my "muffler" from my 77 # 22207. It weighes about 80 pounds because it is ful of metal that is supposed to get hot and "burn" or oxidise hydrocarbons. This monstrosity was part of the 77 usa smog equipment. it is heavy, where you don't need it - at the very rear of a tail heavy car), it is restrictive to the exhaust flow, (costs horsepower), it is heavy, ugly and did mention heavy.

As much as i would have loved to install a Tubi, my priorities for the budget were elsewhere and i had a flowmaster set up built for about 1/4 of a tubi and it is light.

hth,
chris
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not sure about '77 but there are def diff exhaust configs, like my '85 euro is diff than an '84 euro. Have you tried the ferrari owners site, they have lots of diagrams.

 

The vendor is confused

 

What's the flowmaster part# for the muffler you used?

I used 2 of these magnaflows and set them up in a straight back true dual setup. I've also seen these magnaflows in a transverse set-up too.

Sorry I can't help with OEM info, but obvioulsy there are a lot of custom options out there if you want to go that way.
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Do you have a PN for those and what does it sound like?

 

I got mine through www.summitracing.com search under magnaflow mufflers and then universal fit.

Off the top of my head I don't remeber if I used the mpe-14416 or mpe-14415, they also have the mpe-14444 which is 2" in/out.

I'm thinking I used the 2.25" inlet/out (MPE-14415) becuase my 2" exhaust tubing slid perfectly inside the inlet and we welded it that way (not a but joint). I put some stainless tips on the outlets that slid over the outlet, so that worked well for welding too.

I've got more pics on my home PC I can e-mail if you are interested, but give me a day or two.

The sound is nice to sort of loud. There is a guy on F-chat who used the same mufflers (but transversely) and he sent me a sound clip of his car. I'll try to find the thread/pics and his name.

The PO of my car had a custom set-up as well and one of the mufflers had rusted through so the car was always a little loud. It seems to be about the same as with the rusted out muffler. It's not a bad loud, it's throaty, and at speed it's like being in a mid sixties corvette with sidepipes or a similar muscle car of the era.

 

Here's the thread I was looking for.

http://www.ferrarichat.com/forum/showthread.php?t=65525&highlight=308+custom+exhaust

The black car with the transeverse magnas was the guy who sent me the sound clip...see if he's still around.

All the pics I have of my set-up are in the thread too. If you look closely you can see how the exhuast tubing goes inside the inlet of the magna, and the tip goes over the outlet and they got welded that way.

I found that stock SBC heat riser gaskets and rings mated right up to the cats, so I just had the place bend the angles I needed, slipped on the flanges, welded everything up and bolted them on with stainless bolts.

 

Here is a link for the muffler info: http://www.flowmastermufflers.com/products/index.php?main_page=product_info&cPath=34_196&products_id=4027


The muffler is small and light. The sound was a bit loud so we installed some dual resonator tips. Good sound.

With the reduction in back pressure, the carbs weren't happy untill i upped the main to i40, ACs to 200 and idle to 60. This might be a bit fat. Need to get on a dyno or hook up the air fuel meter and test.

regards,
chris