HELP ME! Exhaust advice for 3.6

umgang · 12-21-2005, 01:07 PM

Help! I have a 1975 911S with a 3.6 Varioram, Rennsport System chipped, Rennsport System designed suspension and brake set up...
Recently I had a custom stainless steel header/heat exchanger system made for it by a very known reputable manufacturer. Opened the box, and instead of dual in dual out it is a dual in single out! It is a big single out bbbbbut...
They say there is no performance difference between dual or single out , just aesthetics and sound. Anyone with experience or war stories to tell?? Please share, do I return it or keep it?
Note: the car has front and rear yellowbird bumpers, though cloning a yellowbird is of no consequence to me.

Thanks,
Nick

GrantG · GrantG's Garage

Assuming it was the same performance, would you be happy? I personally like the look and sound of dual-out (as well as any purported power increase). If you do too, then you should get what you ordered and paid for (assuming you specified dual-out).

If you only care about performance, then I'll leave that to the experts to say whether it matters...

mjshira · 02-07-2006, 10:16 AM

Nick

Not sure if you got the info you needed.

There are a lot of options out there. Do a search on triad. If you run 993 HE's you can use it. you can also check out www.instant-g.com and inquire with Steve. He sells the system I am currently looking at. You can also have a fabrication shop make you a system.

My recommendation is that you take advantage of the BBS and read as many threads as you can find. Not sure of your location, but you can also try and find someone near you who has done this for help.

Good luck and keep us posted.

Moses · 02-07-2006, 10:28 AM

Just my opinion, but nothing touches the sound or performance of my $100 Dynomax (17725).

Superman · 02-07-2006, 10:32 AM

Do a Search. You will find some very favorable reviews of the Triad exhaust system. Triad is set up to make exhaust systems for both of the goofy flanges that are part of the stock 3.6 heat exchanger setups. The Triad for the 3.6 engines is apparently MUCH quieter than the standard early 2-in 2-out systems most of us are familiar with. At any rate, you are not going to beat Triad for performance, or at least that is my belief.

http://www.triadwestperformance.com/Products.htm

mjshira · 02-14-2006, 04:36 PM

the only problem with triad is that on RS bumpers it hangs down too much. I won't my exhaust tips to show, nothing more. am I wrong?

mede8er · mede8er's Garage

I'm running the TRG headers with Timmins Happy Crab......I'm very happy............

mjshira · 02-14-2006, 04:56 PM

pics????

Joe Bob · Joe Bob's Garage

993 heat exchangers and a custom 2 into 1 muffler with a cat....works nice. Single 3 inch exhaust tip.

mede8er · mede8er's Garage

While its on the trailer I'll try to get pics tomorrow........the sound is magnificent.........

mjshira · 02-14-2006, 04:59 PM

we need some pics people :-D

Joe Bob · Joe Bob's Garage

threegunner · threegunner's Garage

Pics of Steve's Happy crab with stock HE. Sounds awsome and 993 vram pulls like a 427 in a early vette.

Bill Verburg · Bill Verburg's Garage

Quote:

Recently I had a custom stainless steel header/heat exchanger system made for it by a very known reputable manufacturer.

Wouldn't be B&B would it?

There will be an imperceptible difference in performance between a dual out and single out, the single will be easier on the ears.

But that is not the point, if you ordered dual you should get dual.

Unfortunately B&B dual out are not real dual out anyway, the passenger side is just a nickle sized hole hidden by the outlet.

993 headers or the B&B headers hooked up to the muffler of your choice w/ custom welded pipes is the way to go, as long as a cat is not needed. The advantage of custom pipes is to get everything to fit best.

There are several good muffler options, and also different heat options as well.

If using the 993 headers then use the 993 heat tube and flex SCAT/CAT tube to the body diverters as seen on the brown car above. the disadvantage is that the 993 heat tube intrudes into the space the muffler wants to occupy.

If using the B&B headers then use the 964 heat tube. I had mine made w/ 964 heat inlets and the tall 911 outlets.

Flowmaster and Dynomax both make appropriate mnufflers, the Dynomax probobly sounds mellower, I have a Flowmaster which I am happy w/

DW SD · 02-14-2006, 07:46 PM

M&K exhaust (MB911 on the board) is now making stainless mufflers which adapt 993 HEs to various 911 body types. I think he makes a single out and various dual outs.
Talk to Ben. He's making mine right now.
The factor HEs are stainless and nice quality. They aren't the ultimate in performance, but not bad at all. AND they offer ability to hook up heat.

Doug

Joe Bob · Joe Bob's Garage

At what price?

993 HEs and a custom weld job at the muff shop.....$650 USD.....parts and labor.

SalazarS2K · 02-14-2006, 08:15 PM

James, how do you like your Triad? I also have one on my RS bumper it hangs a bit low too. Can't complain about the fit, finish, or the sound though.

Quote:

Originally posted by mjshira
the only problem with triad is that on RS bumpers it hangs down too much. I won't my exhaust tips to show, nothing more. am I wrong?

Joe Bob · Joe Bob's Garage

Here it is finished....

jevvy · 02-14-2006, 11:50 PM

Hi guys

I have just finnished my 993 3.6 into a 3.2 conversion and I got the first of the happy crab 2 mufflers from Timmins(mins is the one you see test fitted on his site)

fitted to engine:

Its all stainless and it top notch work, the thing arrives in 3 parts, muffler and 2 tubes that lead to the tail pipes. You can see straight through the muffler almost so I guess its pretty free-flowing. The system fits up to 993 HE's and you can also leave the alloy heat tube in place for heat which is a result. Steve also provides a bracket for the muffler to sit against which also works really well.

As far as sound goes it's lovley - I was really worried about it being too loud however it seems to be unusually quiet until you open it up and it really roars. It bangs a pops a bit on decel and blips between gears but I quite like how that sounds too.

As far as power goes the car feels very fast and is quite different to my 3.2 - it certainly rushes through the gears quicker. I had a run in with a 996 the other day and they used to leave me well behind with my 3.2 but with the 3.6(standard chip) I was surging towards him in each gear so im pretty confident that the muffler hasnt hurt performance.

Fitted to car(yes I need to fit my lower valance and paint the bumper but you get the idea):

I also have a vid with sound of the engine running - I will post it somewhere is anyone is interested...

DW SD · 02-15-2006, 05:45 AM

Quote:

Originally posted by mikez
At what price?

993 HEs and a custom weld job at the muff shop.....$650 USD.....parts and labor.

Assuming you are asking about Ben's and MkExhaust's pricing.....
We'd have to ask Ben at MKExhaust his exact pricing. I would believe in the neighborhood of $500 with flanges which mate to the Bischoff style 993 HEs. The stainless steel is top quality and so are his welds. Also, the unit is very light. The last one was 12 to 14lbs.

I'd choose that ALL DAY long over some custom jobby from a muffler shop.

BTW - MikeZ - your solution is great, but for someone that doesn't run cats, I'd have to say I'd choose something different. Too bad your system can't be hidden behind the rear valence any more. Like Salazar says later, aesthetics are just as important.

Bill's is SWEET! It is aesthetically pleasing as well as functional.
I have to think the aesthetic is just as important to many 911 owners.

Doug