C5 Z06 180 degree header build thread

[Tinman]

So I'm curious how much thought you've put into the oxygen sensors? I would suppose bank 1 and bank 2 would still work relatively well unless there is a cylinder imbalance. The ECM would continue to make adjustments without results until fuel trims are maxed out. I suppose changing the computer to stay in open loop might be the simplest way to prevent issues.

 

From what I have read, it is possible to assign cylinders to either O2 sensor via HPTuners. I am hoping this is the case but have zero EFI tuning experience to know for sure. I was planning on getting a bench tune in the near future where this might be able to happen along with deleting the rear O2s and airpump.

 

Anyone familiar with HPTuners want to chime in? Paging Dyno Brian to the white courtesy phone... no, the white one.

[Tinman]

Finally back to where I started. The 4 into 1 merge collectors are complete.

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1969.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1968.jpg

 

I had to offset the location of the V bands as I could not get both of them side by side in the exhaust tunnel. I gave myself a little extra room as they will probably be a bit of pain to slide over the flanges as tight as they are to the sides and top of the tunnel so they are spaced a generous 2 1/4" away from each other.

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1967.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1963.jpg

[SpaceGhost]

Gorgeous!

[SloSVTruck]

Works of art for sure, amazing job!!!!

 

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[everlight44]

Amazing stuff Matt, keep up the good work

[STEVE-O]

Anticipation is strong with this , very cool you had a idea and the ability to do it and are following through on it, that's dedication.

 

Has this idea really been done before on the same vehicle? Seems like it's a good idea but many don't try for lack of knowledge and or ability

[Tinman]

Anticipation is strong with this , very cool you had a idea and the ability to do it and are following through on it, that's dedication.

 

Has this idea really been done before on the same vehicle? Seems like it's a good idea but many don't try for lack of knowledge and or ability

 

From what I understand it has been done once before, http://www.corvetteforum.com/forums/c5-tech/1323232-bizarre-exotic-corvette-noises.html

 

 

Although, I'm not very impressed with the sound from the one known set to exist and am hoping for a much better result. My guess is the above set is not equal length or maybe it's just due to a crappy microphone from a early 2000's era camcorder.

[Cordell]

You're right that video is horrible. Judging by the scenery I would bet it wasn't very well planned or executed.

[Versluis]

This is beautiful

 

 

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[mugen]

absolutely gorgeous work and i cant wait to hear it

i want one for my c5

Prototype 2?

[Tinman]

Back to square one.

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1981.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1979.jpg

 

The V bands ended up a little lower than I had hoped, even with the bottom of the seat rails. I needed the room up top to allow the clamp to slide over the flanges. In hindsight I should have gone with 2 bolt flanges but I hate gaskets and 2 3/4" V bands were only a few bucks more.

[POS VETT]

LOL. I quickly recognized that it was Danny Popp's car and place of work in the video.

[Tinman]

Finally onto the primaries. I started with #2 as it has the longest path to the collector. The #1 primary is actually further away, by the width of a connecting rod, from the collector but because the spark plugs angle forward on the driver side and backwards on the passenger side, the #2 had to go around it's plug unlike #1 that can take a straighter shot.

 

It came in at an acceptable 38" long while leaving room for the rest of the passenger side pipes to make their way to the collector at the same length. The #8 primary fought me quite a bit. Finally, the third routing option ended up getting both the length at 38" and leaving room for #4 and #6 to make their way.

 

The first half of #8

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_1999.jpg

 

And how it fits around #2

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2006.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2009.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2011.jpg

[Dammit Charlie]

Really freaking cool. How would one change the clutch short of pulling the headers?

[Tinman]

Really freaking cool. How would one change the clutch short of pulling the headers?

 

Thanks. Changing of the clutch in a C5 with any longtube headers would require removal of the headers. And I'm sure I'll be visiting said situation at some point.

[JaronsToy]

Love just love ,can you make a viper sound better ?

[Tinman]

Love just love ,can you make a viper sound better ?

 

Yes, but it would require the removal of the odd fire V10.

 

I absolutely adore Vipers but I've never heard a pleasant sounding one. And dammit, now you have me thinking of ways to make one more musical.

[RS69]

One again, beautiful work.

[Cordell]

Thanks. Changing of the clutch in a C5 with any longtube headers would require removal of the headers. And I'm sure I'll be visiting said situation at some point.

 

Yes this, headers are not the hard part. So much has to come out to do a clutch in a Vette.

[JaronsToy]

Yes, but it would require the removal of the odd fire V10.

 

I absolutely adore Vipers but I've never heard a pleasant sounding one. And dammit, now you have me thinking of ways to make one more musical.

 

Let's do it !!!!!

[Tinman]

A little more progress.

 

O2 bungs welded into the collectors. The upper collector being so tight to the tunnel plate required that I cheat it's position slightly in order to maintain a downward angle of the sensor to prevent damage due to condensation. I was able to get a 5 degree downward angle by placing the bung off center and grinding it at both an angle and radius.

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2066.jpg

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2064.jpg

 

And a pile of passenger side primary pipes welded up and ready to go back into position to tack weld to the header flange. They came in at 38", 38", 38 1/8", and 37 3/4" in lengths. Crossing my fingers, toes, legs, eyes, and anything else I can in hopes that the header, when assembled, will slide out of the engine bay without major surgery. The #4 primary is run close to the side of the block making the header pretty wide in it's mid section, kinda like most Corvette owners.

 

http://i157.photobucket.com/albums/t55/tinman_015/IMG_2063.jpg

[TurboRust]

turbo blanket for the starter or anything thoughts that way?

[Tinman]

turbo blanket for the starter or anything thoughts that way?

 

The primaries are not very close yet they will be radiating heat upwards to the starter. I might make a heat shield for the starter from some .040" 3003 aluminum sheet just in case.

[Smokey]

making the header pretty wide in it's mid section, kinda like most Corvette owners.

 

LOL. it's funny cause it's true.

[Miller]

Yes, but it would require the removal of the odd fire V10.

 

I absolutely adore Vipers but I've never heard a pleasant sounding one. And dammit, now you have me thinking of ways to make one more musical.

 

I like the way mine sounds but I could still donate if wanted. Good job btw. Mind = blown