Quote:
Originally Posted by Tom Wells
Lippy,
Spintech made the mufflers for me. Their stock ones proved a little too wide and made one of the world's loudest rattles. After they made some for me about 3/4" narrower, they've been on there ever since. They are not SS so they are coated.
I have SS headers and pipes. This was another series of learning experiences, as the routing and fit of the pipes needs to be done correctly. If they're hanging down a bit too low, well, let's just say it makes a noise that's a lot louder than a rattle!
The pipes are 3" all the way. If you have a smaller engine (mine's a 521) you could likely use 2-1/2" and not eat too much hp.
There's a standard rubber hanger (sort of elongated O-shaped) just before the exit bend, holding onto the the pipe using a piece of 3/8" rod welded onto the pipe, and a similar hanger under the frame.
I would have taken them out to the back bumper to make it quieter on 400-500 mile days, but there wasn't any space for the tailpipes.
Enjoy,
Tom
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My Austin-Healey probably has one of the least amounts of ground clearance on a production car. When I did the small block Ford conversion, I really had to search for a suitable muffler that would save me from tearing out the exhaust system on any kind of bump. I went with the Spintech Cruiser series, which looks a lot thinner than the model you have. They measure 2 1/4" thick and come with oval inlets up to 3" Here's the link:
SpinTech Cruiser Series - Mufflers - Street Mufflers - LOW PROFILE STREET MUFFLERS - 7000 CRUISER SERIES OVAL OR ROUND COLLARS - SpinTech Performance Mufflers
Here's what they look like on the Healey:
I have 2 1/4" pipes on a 345 crank horsepower motor. You can also see the self adhesive DEI Reflect A Kool aluminum covered insulation that I installed above the mufflers:
Reflect-A-Cool 010460 | Purchase DEI, CryO2, Ny-Trex, Boom Mat & SPA Turbo Products | Design Engineering, Inc. - Thermal Performance Products
And this is what the mufflers sound like:
(The system is a dual system with the right side pipe crossed over behind the axle to give the look of the stock twin pipes)