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Firewall Project
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pro70z28
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Joined: 17 May 2007
Posts: 102

3992.22 points



PostPosted: Sat Oct 24, 2009 12:52 am    Post subject: Firewall Project Reply with quote

I'm ready to rebuild the firewall. I cut the flanges out today for the intercooler tubes to pass through the firewall. I'll turn them down on the lathe & weld them in place & shape the sheet metal around them.





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Paul P
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Joined: 15 Aug 2002
Posts: 2393
Location: Townsend, Mass.
81240.86 points


1971 Chevrolet Chevelle

PostPosted: Sat Oct 24, 2009 5:08 pm    Post subject: Reply with quote

Looks like it is coming along well. I notices the cracked windshield starting up from the upper hole. Bummer if you are running glass. Are you going to Lexan all the glass?
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2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
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pro70z28
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PostPosted: Sat Oct 24, 2009 8:18 pm    Post subject: Reply with quote

No, it's going to be glass. (street car). The glass was cracked when I got the car & I cracked it some more taking it out. It's just laying there for placement. I take it out whenever I need it out of the way & put it back when I need to know where it's going to be someday. It's been thrown around a lot. It will have a solid frame to set in when I get the real one in there. If I find that doesn't work I'll have to switch to lexan, but I'm hoping to retain the glass.
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Sat Oct 24, 2009 10:00 pm    Post subject: Reply with quote

Big G that is looking awesome. I can't believe the work you have done!!
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pro70z28
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PostPosted: Sun Oct 25, 2009 10:18 pm    Post subject: Reply with quote

Thanks af2. Got the flanges turned this weekend.



I put a groove around the edge of the flange for the firewall sheet metal. Once I install the o-ring and get in place I'll check the new gap with a feeler gauge and make a soft gasket to seal the flange to the firewall



Engine side of the flange bored to size for the tubes.



Got everything mocked up. The flanges on the windshield will be added to the inlet side. I'll turn those once I get the V-band clamp. Should be here any day. The outlet side attaches to the carb bonnet with hose & clamp.

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clay
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Location: South Carolina
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1972 Chevrolet Nova

PostPosted: Mon Oct 26, 2009 10:05 pm    Post subject: Reply with quote

Now your cookin'. I like it. Stuff like the flanges you are making makes things look more mechanical and I love that. Keep the pics coming. Clay
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pro70z28
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PostPosted: Tue Oct 27, 2009 6:37 pm    Post subject: Reply with quote

Thanks Clay. This is the kind of stuff I started this project for. I like design/fab. work. As a matter of fact I'm headed out there right now.

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pro70z28
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PostPosted: Tue Oct 27, 2009 11:41 pm    Post subject: Reply with quote

Made a little more progress. I put the ol' foam mock up engine in it to make sure I get the angles right before going too much further.

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pro70z28
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PostPosted: Sun Nov 08, 2009 11:02 pm    Post subject: Reply with quote



I've been runnin' the lathe off & on the last few days & got the V-Band clamp flanges done.



Assembled and ready to TIG together



one more check to make sure everything fits like it should.
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Paul P
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1971 Chevrolet Chevelle

PostPosted: Mon Nov 09, 2009 6:31 pm    Post subject: Reply with quote

Is there a flex point for the plumbing? I know the engine will move a bit and with the solid connections you have it will need to move a bit.
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
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pro70z28
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PostPosted: Mon Nov 09, 2009 7:27 pm    Post subject: Reply with quote

Steve Morris says if the body, chassis and engine are all solid, go with the v-band, it is the best. I've seen set-ups with all v-band connections. I'm not that confident, so I'll have a couple boot & clamp connections also.
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Mon Nov 09, 2009 7:48 pm    Post subject: Reply with quote

You even made a carb blank out of solid!!! LOL
Nice work.
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Paul P
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Joined: 15 Aug 2002
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Location: Townsend, Mass.
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1971 Chevrolet Chevelle

PostPosted: Mon Nov 09, 2009 9:20 pm    Post subject: Reply with quote

I guess my question was not worded quite right.

Stainless flex tubing was what I was referring to somewhere in the plumbing all solid tubes will crack somewhere especially if they are aluminum.

_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Tue Nov 10, 2009 11:18 am    Post subject: Reply with quote

Isn't that a flex coupler right off the carb hat?
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pro70z28
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Joined: 17 May 2007
Posts: 102

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PostPosted: Sun Apr 18, 2010 10:46 pm    Post subject: Reply with quote

Had a little time yesterday to work on the "Z". I straightened up a couple places on the firewall so I'd have a straight clean edge to start rebuilding. Then I made one of the two wells the intercooler tubes will pass through. I might use this one or I may try another approach. I'd like the mating surface to be a little smoother than this one. [shrinker sorta' wrinkled it a little]. This is my first attempt at any ''real'' metal shaping so there may be a few trial & error attempts on this deal.




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