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> New Exhaust for the Six - It's LOUD, What? What??? WHAT??????
nynone4
post Aug 30 2004, 03:17 PM
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The Triad exhaust that was on the car was beginning to come apart internally, so I replaced it with another fairly low restriction alternative. Bought two 10" Supertrapps and had the local muffler guru weld up some pipes and flanges so it's an easy on / off affair if the boys in blue give me too much hassle. It's not too bad at idle (has a nice gallop and sputter), but it's LOUD under even just a little throttle and flat out HOWLS when you cram it to the floor.

Pure music!!!

Here's some Pics (I haven't gotten the short valance for it yet):


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nynone4
post Aug 30 2004, 03:23 PM
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Let's try that again:


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nynone4
post Aug 30 2004, 03:24 PM
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KHKJH


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nynone4
post Aug 30 2004, 03:24 PM
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JGKHJJHG


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nynone4
post Aug 30 2004, 03:25 PM
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MVMJHVG


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Joe Bob
post Aug 30 2004, 03:27 PM
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Those are the stainless shorty muffs....I use the longer ones on 3.6 and have used the regular mild steell ones on the 3.0.

Depending on CIS or Carbs, they like a little backpressure and removing some of the discs, quiets them a bit and will help on bottom torque.
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nynone4
post Aug 30 2004, 03:37 PM
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Thanks for the tip Mike - I've got them down to 9 discs each right now (on a carbed 2.7 RS spec motor). Seems to be happy there - but I'd like to get it onto a dyno to see what the optimum setup is as far as discs go.
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TimT
post Aug 30 2004, 04:11 PM
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I had them on my car, I think they are great mufflers. For LOUD tracks, I just pull the guts out and have instant megaphones, then for other tracks I run 18 discs, then for quiet tracks I run 6-8 discs. Yes you can feel the loss of power when you run few discs...

Mine were kinda (I have steel ones) ratty though, so I recently replaced them with this set up I made (mufflers are Coast)


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TimT
post Aug 30 2004, 04:12 PM
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BTW for those quiet track i keep the supertraps in my trailer, just a few minutes to put them back on.
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Qarl
post Aug 30 2004, 05:09 PM
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TimT... can you post a sound clip?

I can host it for you.

Regards,

Karl
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Jeroen
post Aug 30 2004, 05:53 PM
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Quarl wants to know how his mufflers will sound (IMG:style_emoticons/default/biggrin.gif)
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drew365
post Aug 30 2004, 06:21 PM
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I've been running 18 disks on mine. Really loud. I just set them up with 6 disks for this weekends track date which is at a short tight course. I haven't run them with only 6 so I hope I didn't go too far.
I would suggest you make a hanger to hold some of the weight of the muffler otherwise I think you will be splitting your welds at the flanges.
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Qarl
post Aug 30 2004, 06:31 PM
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I have a clip (but not good) from a 911.

Just wanting a mid-engine sound clip... Should be the same... just hoping for a better quality clip.


(IMG:style_emoticons/default/beer.gif)
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TimT
post Aug 30 2004, 06:33 PM
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Karl Im going to Watkins Glen tomorrow, Ill throw the cam in the car for a few sessions..

You will hear alot of intake noise though LOL

BTW I can host video

the website in my sig was made by me and is maintiained by me...

(I know, I still use frames on the site and havent really updated it in awhile)
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d914
post Aug 30 2004, 07:25 PM
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I have a flim clip going through the esses at Road atlanta and one on the straight sound is ok at best. Ill try to figure out how to get it to you. 2.5-6 with megaphones.
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Joe Bob
post Aug 30 2004, 08:35 PM
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QUOTE(drew365 @ Aug 30 2004, 04:21 PM)
I've been running 18 disks on mine. Really loud. I just set them up with 6 disks for this weekends track date which is at a short tight course. I haven't run them with only 6 so I hope I didn't go too far.
I would suggest you make a hanger to hold some of the weight of the muffler otherwise I think you will be splitting your welds at the flanges.

I run 18 as well..but I have twin sport cats up stream....need it for the smog on my 83....Manfred is getting a new muff for the street so we can tune it.....
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campbellcj
post Aug 30 2004, 09:42 PM
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Andy - have you found that a little more backpressure/midrange torque is noticably better at the Streets? I was debating whether to swap for the megaphones this weekend (vs. the 2in/2out sport muffler).

With the stock 914 gears I know I was better off with the muffler as it would bog in a few spots with the megaphones. But with short gears I am not so sure which is better on that track. For the big track the open pipes rev significantly quicker/stronger.
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campbellcj
post Aug 30 2004, 09:50 PM
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Well I think I just answered my own question, for September at least. I am getting tired of swapping exhausts and since the G.A.F. is 9/11 I think I'll just leave the muffler on. Then prior to OTR at WSIR on 9/22 I'll go to the megaphones.

I would really like to learn more about the Burns/Coast and Phase9 options so I could make full power whilst having a semi-streetable noise level.
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drew365
post Aug 30 2004, 09:54 PM
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I haven't experimented with fewer disks at the Streets yet. This will be my first, I'm hoping I didn't take too many out and leave myself no top end but we'll see Sunday. I put on very restrictive mufflers for Laguna Seca and the car ran great so I'm going to start playing with different disk counts at different tracks.Should help to make setup even more confusing. (IMG:style_emoticons/default/wacko.gif)
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campbellcj
post Aug 30 2004, 10:02 PM
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How quick & easy is it to swap discs on the Supertrapps? Do they cool down quickly i.e. if you come off a session can you (safely) mess with them by your next session?

Frank Beck in AZ is now making a trick 914-6 race exhaust that is interesting too and supposedly makes huge power...but I suspect it is north of $2 large
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