1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

bonez cat replacement pipe or cat coneverter??

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Old 05-22-07, 07:55 PM
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Originally Posted by nick812
I have never seen a stock exhaust to start with. Does it bolt to the stock exhaust manifold and to the stock muffler?
No, it depends on the year too. I have a 83 which has two cats and the 84-85s have three I bleieve. Mine bolts up to that 8 inch pipe right after the stock exhaust manifold then bolts up to the rear pipe that bolts to the muffler. Kinda hard to explain. I'll post pics sometime.
Old 05-22-07, 08:14 PM
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TT, point that "flows" arrow to the back, ie toward the muffler, OK?
Old 05-22-07, 08:45 PM
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Originally Posted by twinkletoes
No, it depends on the year too. I have a 83 which has two cats and the 84-85s have three I bleieve. Mine bolts up to that 8 inch pipe right after the stock exhaust manifold then bolts up to the rear pipe that bolts to the muffler. Kinda hard to explain. I'll post pics sometime.
So all the cats are gone, right? I think what you are saying is that the total system becomes the following:

Stock manifold ==>Bonez Replacement Pipe ==> RB Muffler
Old 05-22-07, 09:05 PM
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P.S. Are the bonez cat back exhaust (with mufflers) worth considering over the RB muffler?
Old 05-23-07, 12:54 AM
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Originally Posted by pjr
So all the cats are gone, right? I think what you are saying is that the total system becomes the following:

Stock manifold ==>Bonez Replacement Pipe ==> RB Muffler
Yes pjr thats correct. But theres a pipe in between the bonez racew pipe and muffler that is there stock. I'll post pics tomorrow for everybody. Just post in the thread and I'll try and remember.

To you other question, My bonez race pipe has no catalytic converters in it, So, all cats are gone. I would take the bonez race pipe over the rb muffler cause the rb muffler didn't seem to do much except lower the sound.
Old 05-23-07, 12:55 AM
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Originally Posted by ray green
TT, point that "flows" arrow to the back, ie toward the muffler, OK?
Yep, thats correct.
Old 05-23-07, 08:08 AM
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Originally Posted by twinkletoes
Ok well, I got the bonez race pipe in today and put it on. I love it. It's so worth it. The sound is amazing with the RB muffler. Really low at idle. A lot more power too. I can feel the differnece and it's totally quicker. Totally worth it. Maybe I can post a video sometime.

One last question: how loud? Is it a police magnet?
Old 05-23-07, 03:36 PM
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Originally Posted by pjr
One last question: how loud? Is it a police magnet?
No, its really low what I wanted. Because the rb muffler. You can hear it, but not like crazy. You know the fartcannons on hondas? Probably half that and thats how loud it is, but no fartcannon sound. I would post a video, but don't know how.
Old 05-23-07, 04:41 PM
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Concerning what the Bonez race pipe sounds like, here are some quotes from earlier in this post that describe the rather pleasant exhaust note pretty well:

"And the exhaust tone with the stock muffler is perfect, in my opinion, a nice throaty rumble unlike the tinny sound you get with a header"

"It also produces a great sound with the stock muffler, a bit more of a rumble than stock but not loud or obnoxius, kind of reminds me of my old MGB"

"Also I like the way mine sounds better, a deeper throaty sound"

"You are a 16-17 year old kid driving around in a sports car with what will be a slightly more noticeable than stock exhaust note - ie you are a red flag for the local police"

Knock knock, hello? Is anybody listening? Or are we just posting stuff to get out counts up?

Anyway yeah, the exhaust note is one of the nicer things about the bonez cat replacement racing pipe.

Now concerning the posting of videos, Trochoid showed me how to do this last week. You make the video and post it on YouTube, then link it here. Here is my first attempt:

http://www.youtube.com/watch?v=N7lGhIMeS0A

You can hear the exhaust note in the background, try turning up the sound all the way. Now TT, if you will post one for comparison we can give the forum members some real data instead of our opinions!

Ray
Old 05-23-07, 05:41 PM
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Originally Posted by ray green
Concerning what the Bonez race pipe sounds like, here are some quotes from earlier in this post that describe the rather pleasant exhaust note pretty well:

"And the exhaust tone with the stock muffler is perfect, in my opinion, a nice throaty rumble unlike the tinny sound you get with a header"

"It also produces a great sound with the stock muffler, a bit more of a rumble than stock but not loud or obnoxius, kind of reminds me of my old MGB"

"Also I like the way mine sounds better, a deeper throaty sound"

"You are a 16-17 year old kid driving around in a sports car with what will be a slightly more noticeable than stock exhaust note - ie you are a red flag for the local police"

Knock knock, hello? Is anybody listening? Or are we just posting stuff to get out counts up?

Anyway yeah, the exhaust note is one of the nicer things about the bonez cat replacement racing pipe.

Now concerning the posting of videos, Trochoid showed me how to do this last week. You make the video and post it on YouTube, then link it here. Here is my first attempt:

http://www.youtube.com/watch?v=N7lGhIMeS0A

You can hear the exhaust note in the background, try turning up the sound all the way. Now TT, if you will post one for comparison we can give the forum members some real data instead of our opinions!

Ray
Alright ray. I will defintaley try this. I'll go tke some pics right now. Then try a video. Be back in a little bit.
Old 05-23-07, 07:41 PM
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Ok, heres a pic and some car shots..I had to share my girl. . . .


Next is video if I figure it out.
Old 05-23-07, 07:47 PM
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. Hope it works.
Old 05-23-07, 07:49 PM
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NICe!
Old 05-23-07, 07:51 PM
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Originally Posted by ray green
NICe!
Thanks, Is that how your sounds from the back??

Oh ya, Im wearing race shoes in it...not really, pumas ftw
Old 05-23-07, 08:28 PM
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I'll check, look for the White One, the Sequil, Part II. I recorded that previous movie to show what proper gauges should look like, inside, with the door closed, and an incorrect 170 degree thermostat.

If I can get my wife or neighbors to help, I might be able to record what I sound like outside, I'd kind of like to hear that too. Hope it sounds as good as yours.

Ray
Old 05-24-07, 12:14 AM
  #41  
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Thanks ray. I'll be looking out for the thread. Right when I turned the key and heard it, I freakin loved it. I love the sound.
Old 05-24-07, 01:05 AM
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I really need to get rid of my cats, as I'm running without any emissions, and you guys just convinced me to go with this replacement pipe instead of heading down to an exhaust shop.

Nice vid TT!
Old 05-24-07, 01:41 PM
  #43  
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Originally Posted by StealthGXL
I really need to get rid of my cats, as I'm running without any emissions, and you guys just convinced me to go with this replacement pipe instead of heading down to an exhaust shop.

Nice vid TT!
Thanks, I wouldnt go to a exhaust shop after getting this. You can tell how toughly built this pipe is when you get it and how strong it is. It definitley can handle the heat of the rotary.
Old 05-24-07, 04:51 PM
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OK TT, I've been studying your production techniques and my crew and I have come out with White One II - The Sequil:

http://youtube.com/watch?v=nO_azjUxukk

Stock except for the 5 year old bonez race pipe that has been installed on three different 84/85 GSLs, with total miles around 130,000.
Old 05-24-07, 05:37 PM
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Nice ray. It definitley sounds similar. Wow, that tells you bonez is meant for rotary heat for not rotting after that many miles
Old 05-25-07, 09:39 AM
  #46  
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Has anyone put this on a 6 port 13B? Is there anything special that needs to be done to ensure that the aux ports still open correctly?
Old 05-25-07, 05:21 PM
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Originally Posted by pjr
Has anyone put this on a 6 port 13B? Is there anything special that needs to be done to ensure that the aux ports still open correctly?

I dont know this. Maybe give rx7.com a call and ask them.
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