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> BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time...
tygaboy
post Nov 10 2021, 06:38 PM
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New exhaust underway. I want to get my car back on the road so I'm going after a "quick and dirty" exhaust, just for now. I'll reuse the components I already have and noodle up something neato for a future version. Until then...

I'm going back to the V1 muffler, which is a 2 in/2 out with an internal X pipe. But this time, both exhausts will enter from the same side, which is how the muffler is designed to be used. V1 had the tubes enter opposite sides, crossing over and exiting with one exhaust tip on each side of the muffler. This time it'll look like what's pictured.

Note the right side tube is just a mock up so I'd have some idea of the overall look.
Maybe it's because it's new and different, which appeals to my "Ohhh! Shiny object" disorder, but I like it!

And yes, I'm using the trailer as an extension of the Red Barn. RacerBenz is currently unable to roll so I gotta do what I gotta do.


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Shivers
post Nov 10 2021, 06:57 PM
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Your car rocks dude. A gearheads dream. Pat yourself on the back, this really is some next level work. The acceleration must be therapeutic... (IMG:style_emoticons/default/smile.gif)
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markhoward
post Nov 10 2021, 08:28 PM
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That twin exit on the same side is bad ass! Love it!!
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Dion
post Nov 10 2021, 10:14 PM
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QUOTE(markhoward @ Nov 10 2021, 06:28 PM) *

That twin exit on the same side is bad ass! Love it!!


(IMG:style_emoticons/default/agree.gif) This project and it’s evolving journey is awesome.
The fabrication and details never cease to amaze. Thanks Chris!
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BuddyV
post Nov 11 2021, 12:19 AM
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I absolutely LOVE the asymmetric tips location!

So tasteful. I hope it stays something like this.

(IMG:style_emoticons/default/beerchug.gif)
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Andyrew
post Nov 11 2021, 11:24 AM
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That trunk is looking Tidy!! Love it!
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Retroracer
post Nov 11 2021, 02:29 PM
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..and possibly an added element to evoke that racing Porsche theme - dual cookie cutter tips? Something along the lines of:

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..but not with the backing plate, obvi; just showing this as a visual aid. Food for thought,

- Tony
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tygaboy
post Nov 11 2021, 09:43 PM
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For those interested, here's how the exhaust tips look from the other side.
The ol' "out and around and down and out"!


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tygaboy
post Nov 11 2021, 09:44 PM
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Trans mount X-brace all fitted and tacked in place. On to the exhaust.


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Rand
post Nov 12 2021, 03:06 AM
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(IMG:style_emoticons/default/wub.gif)
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FL000
post Nov 12 2021, 09:57 AM
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I’m definitely jealous of the accessibility you have to the back half of the car. Looks like you can literally stand back there while working on it.
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tygaboy
post Nov 12 2021, 10:23 AM
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QUOTE(FL000 @ Nov 12 2021, 07:57 AM) *

I’m definitely jealous of the accessibility you have to the back half of the car. Looks like you can literally stand back there while working on it.

@FL000 - I just got a new package of Sawzall blades. Bring yours up and I'll help you get better access! (IMG:style_emoticons/default/laugh.gif)
But seriously. Yes, I've stood in there. And the trans has served as a seat, too.
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tygaboy
post Nov 13 2021, 07:53 PM
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Well, that didn't take long... Sorry @buddyV Robert, looks like that muffler set up isn't going to make the (current) cut! In looking at how I'd need to route the exhaust tubing to make that work, I just wasn't feeling it. Yes, I loved how it looked from the outside, but not so much from inside the engine bay.
So, I'm working up what I think I like more: that original "join and run down the center" look. Here's a super rough mock up of one side, just to see if I like this design. This tube will be mirrored on the other side.
And to beat you jokesters to it: Yes, the muffler is laying on the ground and will actually be attached to the end of that last bend. Oh, and I'll weld it up vs using the Gorilla tape you see here. (IMG:style_emoticons/default/poke.gif)


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mgp4591
post Nov 14 2021, 12:35 AM
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Lots of extra piping...but you've got the power to move it!
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cali914
post Nov 14 2021, 07:54 AM
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What are you going to use from the back bar to rear bumper. I got touched there and it started a small crack on my rear fenders.
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tygaboy
post Nov 16 2021, 06:35 PM
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Psych! Back to the first version of the 3rd rendition of the exhaust. Wait... what? (IMG:style_emoticons/default/wacko.gif)
After playing around with various ideas, I realized @buddyv and @markhoward were right - the asymmetric dual exhaust looks pretty neat. Plus, the muffler bracket was already completed and proven to work.

So, let's connect those same ol' headers to that same ol' muffler!

Fortunately, I was able to reuse a bunch of the tubing from earlier versions of the exhaust and needed only one length of new tube. Sorry for not too many in process pics. I got focused on the work and forgot the camera part...


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tygaboy
post Nov 16 2021, 06:39 PM
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Getting everything to line up, in plane and correctly clocked is tedious and challenging. The previous pic shows the lower section of tube (where it enters the muffler) being test fit and this pic shows the upper end section (where it starts heading rearward) in test fit. Then it's work out which tube(s) and where on them to trim so it all comes together.


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tygaboy
post Nov 16 2021, 06:43 PM
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Final test fit before the final tack that locks things in place.


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tygaboy
post Nov 16 2021, 06:45 PM
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Clamping a plate to both sides helps ensure the tubes are in plane.


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tygaboy
post Nov 16 2021, 06:46 PM
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Add a bunch of tacks to be as sure as possible that nothing is going to move, pull it all out, bench weld all seams and...


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