Register now to get rid of these ads!

Projects Reversing a '30 firewall on a budget

Discussion in 'Traditional Hot Rods' started by sloppy jalopies, Dec 4, 2018.

  1. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    Playing with a '30 coupester, saw and liked a reversed firewall here on the hamb…
    I did it 30 years ago but I narrowed a '30 to put in my '28 tudor…
    .
    I removed the '30 firewall...
    trimmed out the hot air and hot water heater holes...
    cut a piece of steel to fit, welded it in...
    I will bend the toe boards back and trim off the lower firewall for now, trim later...
    to extend the firewall's outer edges down to the frame I used the curved outer edges of a scrap '30 firewall...
    welded them in, not long enough, so I will make plates to mount the front of the cowl...
    still have some welding, grinding, sanding, redrilling and tapping waiting...
    but after some attention the old girl should turn the trick...
    .
    DSCN3531 - Copy.JPG DSCN3533 - Copy.JPG DSCN3534 - Copy.JPG DSCN3537.JPG DSCN3532.JPG
    .
    firewall is not flat, has a slight bow top to bottom... the steel flexed to fit no problem...
     
    Last edited: Dec 4, 2018
    chev34ute and spurgeonforge like this.
  2. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    Upon further review,
    The stock firewall gets wider as it gets further from the radiator...
    being reversed, the firewall get bigger as the cowl gets smaller... the 1/8" offset at the upper and rearward edges forces the tank upward... can get it close but too tight...
    I will remove that 1" offset all around... making about 1" less room... but still a big difference from stock...
     
    F&J likes this.
  3. kustombuilder
    Joined: Sep 18, 2002
    Posts: 7,744

    kustombuilder
    Member
    from Novi, MI

    Cool! I'm in the midst of reversing a firewall for a 30 Coupe, so I know what you're dealing with. I'm getting all kinds of tricky with it. I'll try to post it up once I'm done.
     
  4. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    why wait ? … you might give me some great ideas...
     
    Register now to get rid of these ads!

  5. And if you could use more room around the distributor and bell housing, look into the old wheelbarrow trick!
     
    Last edited: Dec 4, 2018
  6. chev34ute
    Joined: Nov 13, 2011
    Posts: 426

    chev34ute
    Member
    from batlow

    How much work is involved in removing the firewall, in regards to the rivets ? What king of bit did you use to drill through them and how long did it take ? I have a 30 Pickup cab that I want to remove the firewall from.
     
  7. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    I removed 2 screws at the top... 2 rivets at the base...
    about six spotwelds each side...
    I spray bomb the section of the cowl that the firewall welds to black...
    when dry I lightly sand that "channel" …
    the spotwelds will be low, stay black, now easy to see...
    I drilled them out with a 1/4" bit... then hammer and chiseled the remaining bits of spotweld…
    easier than I expected...
    going to cut off the 1" outer, offset flange from the firewall so it will fit better when reversed on Thursday…
    try and remember to zap some pix...
    .
    you can just see the 1/4" holes along the hood offset...
    .
    DSCN3507 - Copy.JPG
     
  8. The37Kid
    Joined: Apr 30, 2004
    Posts: 24,340

    The37Kid
    Member

    I believe it is all spot welds that need to be cut with a spot weld cutting tool. Bob
     
  9. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    didn't have that... so I used a 1/4" drill then chiseled … easy !
     
  10. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    Removed the outer 1" flange this noon, the firewall fits much better now...
    [4] 1/4"-20 bolts hold it in for now...
    … the 1" outer strip... FREE if it helps mount a flat sheet firewall... [tank bolts would line up] DSCN3546.JPG

    . DSCN3556.JPG DSCN3555.JPG DSCN3553.JPG

    Didn't need rear distributer clearance...
    Just want to run a stock hood.
     
  11. It's been a number of years, but all i had to do if i remember right was drill out the spot welds, turn it around , weld it back in, cut the feet off, turn them around and weld them back on,
     
  12. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    … I can't afford to use a wheel barrow...
    this time of year the locals buy them to make little nativity style set ups on the front lawn...
    also my 10th streetrod, never ran an engine that had a rear distributer...
    because I never ran 337's, Y blocks or them orange thingies...
     
  13. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,307

    sloppy jalopies
    Member

    Funny how the inside of Maine firewalls are so much less pitted than the outside...
    DSCN3564.JPG first pass grind n' sand... spray bomb...
     
    Last edited: Dec 9, 2018 at 9:34 AM

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2013 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.