CLASS RACER FORUM - Firewall Project

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- - Firewall Project (https://classracer.com/classforum/showthread.php?t=21276)

Re: Firewall Project

If youre building a stocker Im seriously depressed, VERY VERY Nice work though......and Ill be resigning my overthing do it to the max overkill hat to you ........very very nice work.

But where did I miss what youre building ? Very very nice work especially the sheet work......

Quote:

Originally Posted by pro70z28 (Post 186528)

Sorry I got carried away on the project & by the time I remembered to take pictures I had the outlet tube firewall sheet metal done.
This is the firewall before...

http://img.photobucket.com/albums/v2...Up10-27-09.jpg

and with the intercooler tubes part of the sheet metal in place.

http://img.photobucket.com/albums/v2...talinplace.jpg

http://img.photobucket.com/albums/v2...sheetmetal.jpg

The inlet side is just a simple pie plate deal that will be trimmed & welded into the firewall eventually.
The outlet side was a little more complicated. I didn't want to run the plumbing off to the side (the way it's usually done). I wanted the carb hat facing straight back. Also, the engine is set back about 4" from the stock location. So, the 4" inlet tube has about 3/8" clearance between the windshield and about 1" clearance for the distributor. It's all pretty close but it fits. . The "through the firewall sheet metal'' for the inlet tube ended up looking sorta like shoving the flange through a hefty hefty trash bag. :D

...and here's what it looks like from "the office".

http://img.photobucket.com/albums/v2...indoshield.jpg

Re: Firewall Project

Quote:

Originally Posted by drooze (Post 186538)

drooze, it's a pro street. I'll probably just bracket race it, at least at first.

It's a 70 Z-28 RS

http://img.photobucket.com/albums/v2...OPPANORAMA.jpg

http://img.photobucket.com/albums/v2...aroStands1.jpg

http://img.photobucket.com/albums/v2...aroStands2.jpg

Re: Firewall Project

Forgot I took some shots of the process when I stamped the shallower inlet side.

I cut the 3/4" MDF out on the CNC. I gave one side 1/8" clearance for the metal and the other side the circle press fit into the MDF.

http://img.photobucket.com/albums/v2...28/MDFdies.jpg

http://img.photobucket.com/albums/v2...edtogether.jpg

This made the die the right depth (I needed it to be stamped 1/2" deep for the right offset). It also made it easy to register the die halves.

http://img.photobucket.com/albums/v2...DiePressed.jpg

Once out of the press all I had to do was hammer the tucks and it's ready to trim to the firewall. The firewall that doesn't exist yet.

Re: Firewall Project

Got a little more done on the firewall this weekend between honey -do projects.

I made a hammer form out of a 2x4 on the band saw to match the contour of the firewall and beat some metal into submission. Still needs a little hammering but it's close enough for a test fit.

http://img.photobucket.com/albums/v2...ammerForm1.jpg

http://img.photobucket.com/albums/v2...sengerside.jpg

I decided to do recessed panels on the sides & I think I'll do raised panels on the front, but I've changes my mind so many times already, who knows.

http://img.photobucket.com/albums/v2...lSidePanel.jpg

http://img.photobucket.com/albums/v2...neltestFit.jpg

This part of the firewall will get welded to the body. The rest will get welded to the chassis and the 2 will be bolted or riveted together (blind seam) from the inside

http://img.photobucket.com/albums/v2...fit5-31-10.jpg

I think I spent more time in the lawn chair thinkin' about this than actually working on it. I kept changing the plans until I had a headache & finally decided to just do something. If it doesn't work I'll start over. I want to be able to take the body off, so that's why it's going to be a 2 pc. deal. Sort of the same reason I spent all that time on the billet aluminum hinges rather than just welding them to the chassis. Keeping the "A" pillars I'll still be able to use stock door weatherstripping and boxing in the firewall under the windshield I'll be able to keep the stock windshield wipers, got to keep it street legal right?

Re: Firewall Project

Got a little more done on the firewall this weekend, Welded a few of the small pieces to some of the medium sized pieces.

http://img.photobucket.com/albums/v2...all6-6-101.jpg

http://img.photobucket.com/albums/v2...all6-6-102.jpg

Re: Firewall Project

Nice work, wish I had that skill and patience.

Re: Firewall Project

You're a talented craftsman. Best wishes w/this car. WJ

Re: Firewall Project