BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time... |
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BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time... |
tygaboy |
Nov 10 2021, 06:38 PM
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#3761
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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. Attached thumbnail(s) |
Shivers |
Nov 10 2021, 06:57 PM
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#3762
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Senior Member Group: Members Posts: 2,781 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
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 |
Nov 10 2021, 08:28 PM
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#3763
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Member Group: Members Posts: 385 Joined: 5-March 17 From: Lafayette, CA Member No.: 20,897 Region Association: Northern California |
That twin exit on the same side is bad ass! Love it!!
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Dion |
Nov 10 2021, 10:14 PM
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#3764
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RN Group: Members Posts: 2,801 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
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! |
BuddyV |
Nov 11 2021, 12:19 AM
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#3765
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Robert Group: Members Posts: 563 Joined: 8-April 05 From: Santa Rosa, CA Member No.: 3,898 Region Association: Northern California |
I absolutely LOVE the asymmetric tips location!
So tasteful. I hope it stays something like this. (IMG:style_emoticons/default/beerchug.gif) |
Andyrew |
Nov 11 2021, 11:24 AM
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#3766
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Spooling.... Please wait Group: Members Posts: 13,377 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
That trunk is looking Tidy!! Love it!
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Retroracer |
Nov 11 2021, 02:29 PM
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#3767
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Senior Member Group: Members Posts: 621 Joined: 7-July 13 From: Bend OR Member No.: 16,100 Region Association: Pacific Northwest |
..and possibly an added element to evoke that racing Porsche theme - dual cookie cutter tips? Something along the lines of:
..but not with the backing plate, obvi; just showing this as a visual aid. Food for thought, - Tony |
tygaboy |
Nov 11 2021, 09:43 PM
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#3768
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
For those interested, here's how the exhaust tips look from the other side.
The ol' "out and around and down and out"! Attached thumbnail(s) |
tygaboy |
Nov 11 2021, 09:44 PM
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#3769
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
Trans mount X-brace all fitted and tacked in place. On to the exhaust.
Attached thumbnail(s) |
Rand |
Nov 12 2021, 03:06 AM
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#3770
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
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FL000 |
Nov 12 2021, 09:57 AM
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#3771
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Member Group: Members Posts: 425 Joined: 31-January 12 From: Lancaster, CA Member No.: 14,076 Region Association: Southern California |
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 |
Nov 12 2021, 10:23 AM
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#3772
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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. |
tygaboy |
Nov 13 2021, 07:53 PM
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#3773
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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) Attached thumbnail(s) |
mgp4591 |
Nov 14 2021, 12:35 AM
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#3774
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914 Guru Group: Members Posts: 5,483 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region |
Lots of extra piping...but you've got the power to move it!
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cali914 |
Nov 14 2021, 07:54 AM
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#3775
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cali914 Group: Members Posts: 455 Joined: 26-April 06 From: Berkeley Ca. Member No.: 5,934 Region Association: Northern California |
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 |
Nov 16 2021, 06:35 PM
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#3776
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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... Attached thumbnail(s) |
tygaboy |
Nov 16 2021, 06:39 PM
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#3777
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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.
Attached thumbnail(s) |
tygaboy |
Nov 16 2021, 06:43 PM
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#3778
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
Final test fit before the final tack that locks things in place.
Attached thumbnail(s) |
tygaboy |
Nov 16 2021, 06:45 PM
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#3779
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
Clamping a plate to both sides helps ensure the tubes are in plane.
Attached thumbnail(s) |
tygaboy |
Nov 16 2021, 06:46 PM
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#3780
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914 Guru Group: Members Posts: 5,452 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
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...
Attached thumbnail(s) |
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