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Posted by: mittelmotor Sep 3 2012, 10:19 PM

Hi guys,

My project is getting into the exhaust system phase, and I've got a couple of bare manifolds waiting for some tubing and mufflers.

I'm having trouble deciding on exact configuration (twin tips straight out, single side exhaust with a collector, etc.). I'd like to keep it tucked away out of sight as much as possible, and keep the sound level reasonable.

Any pics of your system would be greatly appreciated!

--Doug

Posted by: kg6dxn Sep 3 2012, 10:26 PM

This is what mine looked like when I had a V8...

Posted by: rick 918-S Sep 4 2012, 12:15 AM

Posted by: matthepcat Sep 4 2012, 12:38 AM

If you want to remove all drone, I would bring one side of the exhaust under the oil pan and merge it with the other side (like a factory exhaust). From that point run one large exhaust through a muffler in the factory location out one side. Even using a high flow cat would remove some stink.

Posted by: Dr. Roger Sep 4 2012, 01:36 AM

corvette c5 mufflers. cut 40% off of the length, gutted 3 of the 5 internal baffles, and welded the end back on.

c5 location worked perfectly on 914 after shortening.

size and configuration similar to this pic.




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Posted by: bulitt Sep 4 2012, 05:15 AM

Nice V8 over on ebay with side exhausts. Link wont stay up long.
http://cgi.ebay.com/ebaymotors/Porsche-914-Targa-top-1971-Porsche-914v8-gt-/160874776993?pt=US_Cars_Trucks&hash=item2574e249a1

Posted by: andys Sep 4 2012, 09:35 AM

Flowmaster 50 series three chamber mufflers.

Andys



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Posted by: v82go Sep 4 2012, 10:44 AM

SBC with long tube headers and a Porsche GT3 muffler, I have built 4 different

exhaust systems (turbo mufflers, flowmasters, Ferrari mufflers, GT3) the GT3

sounds the best by far and is fairly quiet but still mean sounding and no drone


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Posted by: mittelmotor Sep 4 2012, 11:48 AM

Thanks, guys. Keep 'em coming! I love the ingenuity of all these different approaches.

Posted by: clow Sep 4 2012, 07:21 PM

Very interesting one.

'strewteral' posted it in one of my v8 threads







Clow

Posted by: seanery Sep 4 2012, 07:23 PM

OMG that's a monster exhaust!!!

Posted by: kg6dxn Sep 4 2012, 08:50 PM

Those 180 degree headers sound awesome too. Kind of like a European super car. They just take up way too much room...

Posted by: computers4kids Sep 4 2012, 09:35 PM

SBC with Turbo mufflers with crossover pipe

Posted by: mittelmotor Sep 7 2012, 01:13 PM

She's a runner! A few teething problems; I understimated the amp draw for the fans, so a fuse blew, and some starter solenoid circuit issues that I hope will be fixed with a relay, on the advice of Steve at Renegade.

Car is everything I thought it would be with the V-8, and I haven't even given it more than half throttle! (breaking in the clutch, y'know). Smooth effortless torque, super well mannered with the fuel injection.

Exhaust is great!! Maybe too subdued for some, but for my semi-sleeper build it's just right. Nice quiet burble, very refined. Particulars:

--2.25" tubing
--dual inlet/dual outlet muffler from a 1967-1968 Mustang
--stock valance exit on driver's side, hidden dump pipe on passenger side

I'm really happy with the tip...looks like it was made for the car. Muffler tucks up so nice that all you see is the exhaust hanger, and I could clean that up later with a straight-across piece.

Frank at Laguna Muffler Service in SoCal did the whole thing for $300, but I insisted it was worth $350. The final touch will be some muffler wrap for the tubes going over the axles, to keep heat away from the CV joints and starter.


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Posted by: db9146 Sep 7 2012, 02:34 PM

Mittelmotor,

Nice solution.

Posted by: Andyrew Sep 7 2012, 03:32 PM

Not enough heat in the exhaust to worry about muffler wrapping. FYI.


Great looking setup!

I have two magnaflows over the axles after the axles right by the bumper. Simple, works, and sounds great

Posted by: nick mironov Sep 7 2012, 03:52 PM

I used a Magnaflow dual-in dual out-muffler.

Posted by: dadaDaveed Sep 7 2012, 04:17 PM

Nick, how does that setup sound? I'm thinking about using the same muffler on my LS1 conversion.

Posted by: mittelmotor Sep 7 2012, 04:19 PM

Great setups. That Magnaflow looks pretty burly! Andrew, I think I'll wrap the pipes anyhow. I had a 944 where the pipe pan-fried a CV joint. Maybe overkill, but the JEGS order has been placed.

Here's a pic of the shift rod extension. Somebody PM'd me and I didn't know how to send a pic directly, so here it is. You can see the cut was made on the straightest part of the rod. You can either sleeve it on the outside, or do like I did and weld rod stock inside the tube.

Also note side bolts for the LS1's 6-bolt mains!


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Posted by: speed metal army Sep 13 2012, 09:03 PM

2.5" SS Magnaflow SS 2in/out
Sorry bout the cell phone pics.

Posted by: speed metal army Sep 13 2012, 09:10 PM

2 more