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Ls1 headers for a V8 Miata!!!

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Old Aug 22, 2005 | 03:54 AM
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Default Ls1 headers for a V8 Miata!!!

Hey All:

I am trying to pull all this together. I have been really busy trying this weekend building the headers for my Ls1 V8 miata conversion. They are 1 5/8" primary tube merging into flow master pulse collector set for long tube headers, that I cut to get the smooth merge. 1 5/8" to a 2 1/8" mid pipe going into a 2 3/4 merge collector. The room is very tight and realized that I had to become creative in the construction. I still have alittle left to do on the headers....weld in both O2 sensor bungs, weld on the left side collector, and check for clearance. Enjoy the pics.!!!!! I am trying to get it running by the end of September.


http://www.ls1miata.net/gallery/miata?page=11

Later
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Old Aug 22, 2005 | 10:13 AM
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Nice work! Would recommend you do some heat shielding on those fluid lines.
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Old Aug 23, 2005 | 03:12 AM
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They look unreal, wait until you get them coated, will look a million $$.
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Old Aug 23, 2005 | 06:20 AM
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Thanks!!! I am currently trying to clean up the ports.....where the pipe goes into the flange. I spent this morning cutting the pipes in the flange that were not in straight....so I cut them straight and welded the inside and outside....now all I need to do is port match it to the gasket....then re-install them on the car and fininsh the O2 sensor bungs and the left side collector and flange.
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Old Aug 23, 2005 | 04:18 PM
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holy tight fit batman!
nice work on those headers.
dont forget to lay down some thermal mat over the tranny tunnel before you put down your carpeting, I had to go back and lay some thermal barrier down because it was brutal in my Ls1rx7 with the headers/downpipes so close to the tunnel.

awesome.
I cant wait to see this done and running!
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Old Aug 24, 2005 | 04:58 AM
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Owen:

Thermal barrier mat already laid down. I have some more pics. of the work in progress. Yes, I can not wait to drive this creation!!!! I have been bust'n my A$$ to get to this point.......Man, I am tired!!! I am going to start building the center pipe soon. I will be running 4 mufflers to knock the bark of the exhaust. It will be like a total of 10 feet long.... 2 dyno Max straight through bullet mufflers and 2 magna flows in the rear. I am very interested in hearing this thing when it runs. I wonder how the tr224 114 cam will sound......
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Old Aug 24, 2005 | 04:58 AM
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http://www.ls1miata.net/gallery/miata?page=12
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Old Aug 24, 2005 | 05:45 AM
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How much do you have invested if you don't mind me asking?
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