New exhaust for an 83??
#1
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Thread Starter
New exhaust for an 83??
WHat are my options on replacing the exhaust on my 83? Money is a concern, dont want to spend a fortune. Its all factory stock now, and has blown out the gasket in fron ot the front cat, and of course the studs are going to break (one of them was broken off already, which is why i think it blew the gasket out) anyways, debating what to do.......tips? SHould I drill out the studs and just repair what I have or basically replace from the head pipe back and do away with the cats, what kind of muffler do i need? Dont have the money to do a header now....
#5
I recommend the Bonez race pipe sold by rotary performance (www.rx7.com). Bolts up to the stock header and runs to the stock midpipe. Cuts out all of the cats. Thick steel and good quality. I run that with a racing beat muffler and it sounds and performs great.
Be careful having a regular exhaust shop fab a pipe up for you... as hot as the 7's exhaust is, it'll burn through in no time if it's not thick enough steel. Same goes for the generic/universal mufflers.
Be careful having a regular exhaust shop fab a pipe up for you... as hot as the 7's exhaust is, it'll burn through in no time if it's not thick enough steel. Same goes for the generic/universal mufflers.
#6
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iTrader: (14)
I used that bonez race pipe for years, easy to install in place of the cats, not very expensive from rx7.com. I transplanted that pipe onto three different GSLs before finally upgrading to the RB system, was still like new when I passed it along to another rotor head.
And if you still have your cats you can sell them to a guy up in Massachusetts, you will probably get enough from the cats to buy the race pipe. I just sold him a set of cats from my 85 GSL last month (main cat and two precats) for a tidy $150.
And if you still have your cats you can sell them to a guy up in Massachusetts, you will probably get enough from the cats to buy the race pipe. I just sold him a set of cats from my 85 GSL last month (main cat and two precats) for a tidy $150.
#7
Why am I doing this?
Thread Starter
Thanks for the link....so the race pipe will do away with both my cats and bolt in at the front factory headpipe and run to the factory center pipe ahead of the muffler? What do i do with the smog pump lines/fittings/etc? if i go that route. Dont want a massive issue if i start pulling all that stuff off the engine without being sure it can go away......
I recommend the Bonez race pipe sold by rotary performance (www.rx7.com). Bolts up to the stock header and runs to the stock midpipe. Cuts out all of the cats. Thick steel and good quality. I run that with a racing beat muffler and it sounds and performs great.
Be careful having a regular exhaust shop fab a pipe up for you... as hot as the 7's exhaust is, it'll burn through in no time if it's not thick enough steel. Same goes for the generic/universal mufflers.
Be careful having a regular exhaust shop fab a pipe up for you... as hot as the 7's exhaust is, it'll burn through in no time if it's not thick enough steel. Same goes for the generic/universal mufflers.
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#8
Why am I doing this?
Thread Starter
Thanks for the info....so the race pipe will do away with both my cats and bolt in at the front factory headpipe and run to the factory center pipe ahead of the muffler? What do I do with the smog pump lines/fittings/etc? if i go that route. Dont want a massive issue if i start pulling all that stuff off the engine without being sure it can go away......
I used that bonez race pipe for years, easy to install in place of the cats, not very expensive from rx7.com. I transplanted that pipe onto three different GSLs before finally upgrading to the RB system, was still like new when I passed it along to another rotor head.
And if you still have your cats you can sell them to a guy up in Massachusetts, you will probably get enough from the cats to buy the race pipe. I just sold him a set of cats from my 85 GSL last month (main cat and two precats) for a tidy $150.
And if you still have your cats you can sell them to a guy up in Massachusetts, you will probably get enough from the cats to buy the race pipe. I just sold him a set of cats from my 85 GSL last month (main cat and two precats) for a tidy $150.
#9
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iTrader: (14)
No problem with the smog pump and lines, you can either leave it there pumping to the atmosphere or remove it altogether and go with a dual alternator pulley. Save the stuff just in case, but chances are once you're rid of the cats and have that extra HP and pretty sound of the race pipe you won't go back.
The race pipe bolts right up to the factory header and back to the mid-pipe, it's an exact fit and easy to install. Be sure to get the right one, they are different for the different year FB's because the cats were different from year to year.
Don't throw those cats away, they are worth big bucks!
The race pipe bolts right up to the factory header and back to the mid-pipe, it's an exact fit and easy to install. Be sure to get the right one, they are different for the different year FB's because the cats were different from year to year.
Don't throw those cats away, they are worth big bucks!
#10
Yes, the race pipe takes the place of both cats. Bolts exactly where you're thinking. You can trace the air pipes back into the engine bay and pull them right out, just a couple of hose clamps to loosen and they'll pull right out. Don't worry about capping them or anything, they're just used to feed fresh air from the air pump into the cats.
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