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TMR Frame Strengtheners

November 13th, 2008 Posted in Tech, Unibody

I got a set of Cherokee Frame Strengtheners from Temper-Mental Racing to pick up where the T&T Unibody Stiffeners left off. I went with the 1/8″ thick version to save a little weight. TMR sells these plates for JeepSpeed racers… and if they even offer an 1/8″ version, I think it’s probably plenty strong for most applications.

I only wanted these plates to cover the area from the T&T Unibody Stifeners to the track bar bracket, so I marked and cut them to fit.

My plan is to use something thicker in front of the track bar bracket so that I can use it for a bumper mount and then weld the track bar bracket to both sides.

After I got them trimmed, I clamped both of them together and drilled a bunch of 1/2″ rosette holes with a unibit.

Then I took a flapper wheel and cleaned the protective coating off the plates…

I also cleaned up the frame with a flapper wheel…

I decided to wipe down the area with denatured alcohol and try the Krylon galvanizing primer again.

Then I simply clamped the plate in place and filled in the rosette welds.

I was VERY careful about moving from one side of the plate to the other and then even moving from one side of the jeep to the other, so as to not overheat any one area. I actually did the whole process over a couple days before and after work.

When all the rosettes were filled, I cleaned it up with the flapper wheel to try to make it look… nice.

I’ll paint them when I’m done with all the plating.

Finally, I just had to do something about the transition from the TMR plate to the T&T Stiffeners. I cut a piece of 3/16″ strap to use as a fish plate.

Then I put a little bend in the middle of it to better contour to the unibody.
(I let a buddy borrow our CNC brake, so I just did it with a BFH.)

Then I just welded them in place.

On a final note… I’ve come to the conclusion that Krylon galvanizing primer SUCKS!! Do not bother with this stuff if you’re planning on welding through it! I don’t know what the alternative is, but I’m never using this stuff again.

  1. 5 Responses to “TMR Frame Strengtheners”

  2. By patrick on Nov 29, 2009

    For primer use,you can try a zinc weld-true primer.It is fantastic !!

  3. By JeepFreak21 on Nov 29, 2009

    Yeah, that’s what this was supposed to be!

  4. By monster10 on May 1, 2011

    you should go to your local weld shop and ask them for weld trough primer stuff works great

  5. By racer-john on Sep 13, 2011

    May I suggest that when bending in a vice,that you hammer towards the fixed jaw. this will alleviate the possibility of cracking the frontjaw, or at least loosening the threaded pressure bolt.
    While testing a welded specimen in welding class back in the day,my instructor jumped allover me for bending in the direection you showed.

  6. By JeepFreak21 on Sep 13, 2011

    Good lookin’ out John! I had no idea! Thanks for the tip!

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