Porsche Powered Mid-Engine Double Cab Build

Hugo Stiglitz · Posted: Mon Oct 24, 2011 2:50 pm Post subject:

I'm glad to see this is still in the works! Can't wait to see the final product. I really dig the shift knob made out of walnut and aluminum.
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'63 slow n low build thread...

System 51 - Advanced Waxes & Polishes

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RennyRB · Posted: Mon Oct 24, 2011 9:11 pm Post subject:

What's with the cats? Totally stock engine map to be used here?

(unless those are silencers/resonators, in which case this can be ignored)
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1967 Squareback

67dubcab

67dubcab

RennyRB · Posted: Thu Oct 27, 2011 12:13 am Post subject:

Sounds good Exclamation

Proper tuning is the way to go, and good on you to reduce pollution.
Can't wait to see more updates, this is one of my favorite builds.
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1967 Squareback

LeviMan2001

I'm getting that old "aaaahhhh this is going to be so badasss!" feeling again. I dig the cats, sometimes people don't realize how little they actually restrict the flow. I really like how everything is just 1 step above factory in quality with all the fabrication. Best way to go for a daily driver! Cool

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http://www.thesamba.com/vw/forum/viewtopic.php?t=366056 - My '73 Super Build. 2332cc, 16" Fuchs

Twisted Minis · Posted: Sat Oct 29, 2011 3:14 pm Post subject:

One side almost done, other side is a little more intricate.
Image may have been reduced in size. Click image to view fullscreen.

A little more tweaking and I can weld the mid pipe to the muffler and cat, and then start on a crossover, or H-pipe.
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If you can find it cheaper, I can fix it.

Twisted Minis · Posted: Sat Oct 29, 2011 3:17 pm Post subject:

I'm a little disappointed the exhaust looks so simple in the pictures, but there are a lot of angles you don't really see. Its not just straight with some bends. Almost every bend is off axis from the one before, especially on the PS.
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If you can find it cheaper, I can fix it.

dirtsandwich · Posted: Sat Oct 29, 2011 4:12 pm Post subject:

Twisted Minis · Posted: Sat Oct 29, 2011 8:28 pm Post subject:

Basically I am just disappointed with the camera pics right now. I need to get the DSLR out of storage. You can't see much detail in these, it looks much better in person.
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If you can find it cheaper, I can fix it.

vdub8 · Posted: Sun Oct 30, 2011 9:20 am Post subject:

Twisted Minis · Posted: Thu Nov 03, 2011 11:13 pm Post subject:

Here are the latest shots. I am basically done with the exhaust now aside from the H-pipe. I needed to finish each side before I can tie them together with the H-pipe. I am pleased with the way it came out.
Image may have been reduced in size. Click image to view fullscreen.

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If you can find it cheaper, I can fix it.

Stripped66 · Posted: Fri Nov 04, 2011 6:37 am Post subject:

Twisted Minis · Posted: Sun Nov 06, 2011 9:53 pm Post subject:

Almost done with the exhaust. I fitted up the H-pipe, I just need to cut the holes and weld it in place.
Image may have been reduced in size. Click image to view fullscreen.

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If you can find it cheaper, I can fix it.

Twisted Minis · Posted: Tue Nov 08, 2011 1:20 pm Post subject:

Here are some better pictures.

Image may have been reduced in size. Click image to view fullscreen.

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If you can find it cheaper, I can fix it.

Gary · Posted: Tue Nov 08, 2011 1:22 pm Post subject:

Nice work. What's the reason for the cross-over in the exhaust?
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Download this spreadsheet for NOS/OE parts inquiries--> http://vwjudsonregister.tripod.com/IMAGES/2013-parts-spreadshhet.xls

Emiel · Posted: Tue Nov 08, 2011 1:54 pm Post subject:

Virtually all V-8 exhaust systems can be refined by the addition of a balance or X-pipe. These have two potential attributes: increased power and reduced noise. Extensive dyno testing on both of these factors has indicated balance and X-pipes are 100 percent successful at reducing noise. The reductions amount to a minimum of 1 dB to a maximum of 3 dB with 2 dB being common. As far as power is concerned, things are a little less certain. With engines between about 325 to 550 hp, experience indicates that in about 60 percent of the cases (mostly with balance pipes), the engine can deliver as much as 12 additional hp, with 5-8 being the most common. The other remaining 40 percent tested showed virtually no change in output either up or down. Based on such results, we can conclude that a balance or X-pipe is always a positive asset and never a negative.

Balance pipe sizing seems not to be overly critical. The only really influential dimension is the pipe diameter. This needs to have an area at least equal to that of a 2.25-inch diameter pipe (4 square inches) with 2.5 to 2.75 inches being preferable. Though limited to tests on engines up to a little fewer than 600 hp, there seems to be no measurable benefits to using a crossover pipe bigger than 2.75 inches in diameter. As for the crossover length, dyno results indicate that 18 inches responds in virtually the same manner as 72 inches long.

Read more: http://www.popularhotrodding.com/enginemasters/art...z1d9KM4fih
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Hugo Stiglitz · Posted: Tue Nov 08, 2011 1:55 pm Post subject:

Gary · Posted: Tue Nov 08, 2011 1:59 pm Post subject:

Thank you both for the explanations. I hope when this build is finished that a video is posted so we can all enjoy the sounds of that exhaust system.
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Download this spreadsheet for NOS/OE parts inquiries--> http://vwjudsonregister.tripod.com/IMAGES/2013-parts-spreadshhet.xls

70 140 · Posted: Tue Nov 08, 2011 7:35 pm Post subject:

I'm interested to see the heat exchangers get plumbed in. The truck should be toasty with those monsters.

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Porsche Powered Mid-Engine Double Cab Build
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