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Old 02-08-2018, 03:28 PM   #201
 
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I love seeing updates on this thing, awesome work!

Are there certain specifications/requirements for stiffness you are following or are you just flying by the seat of your pants a little? Just curious as Iím clueless on this stuff.


Yes, I'm building it to SFI 25.3 specs, which is good for 6.50 second 1/4 mile at 3600#... I need to buy the book for 25.1 as I think it might certify for both. That would allow 6.0 @ 3200#. The books are like $40 and 40 pages long. They lay out a general idea of the cage and say how close the tubes can be, what diameter etc. But there is lots of room for interpretation and making it fit the car.

Here's the basic design pic




I have added the double frame rails (the arm rest looking thing down the center) to stiffen up the car. I also added the engine mid plate frame in the firewall.

As for the rear section you can kinda do whatever you want, as that is about performance and not driver safety. I'm making that up as I go, triangulating and bracing where I think all the forces are going to be
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Old 02-08-2018, 03:58 PM   #202
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As for the rear section you can kinda do whatever you want, as that is about performance and not driver safety. I'm making that up as I go, triangulating and bracing where I think all the forces are going to be
Make sure you stiffen up the drivers side quarter panel about ass cheek height for maximum hard parking.
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Old 02-08-2018, 07:42 PM   #203
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Old 02-13-2018, 05:29 PM   #204
 
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looking good, i just busted out my tig for the first time doing some exhaust work. Lots to learn..
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Old 03-12-2018, 10:41 PM   #205
 
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Couple small updates here. I got my garage space back and setup the tubing bender again. Wew




I mocked up the new spindle mount struts and wheels. Definitely gonna need to make some custom CC plates and control arms, cause this looks retarded









The engine came with some really nice fabricated valve covers. However they have some stupid engraving on them, and AN fittings welded on that I don't need. So I drilled out the fittings and welded a patch panel in place. Not 100% perfect but way better than before imo. I then filled the engraving with jb weld and baked it at 350* in the oven to cure and degas it. They are getting powder coated, so I wanted any impurities to bake out now, instead of when it gets baked later with the powder.













I picked up a new 13 gpm fuel pump locally. Hoping it's enough to feed my 575# injectors . Got bored and took it apart to see what's what. I think I'm going to drive it off of the camshaft for simplicity. I don't wanna deal with another belt in the engine bay









I also found these side pad things in Kirkey catalog for like $20 so figured I'd give them a try. They look much softer than the chromoly tubing behind them lol




With the ability to bend tubing again, I really want to get this cage done and welded up. I will be taking the body of the cage to do that. But first I need to finish up the rear section- shock mounts, parachute bar, etc.

However the car is longer than the jig. And I have it setup to support the engine in the front, so there's nothing in the back to use for clamps and bracing and stuff. So the hectic weekend began of getting the car shifted on the jig.....

The engine is currently installed perfectly level and square etc in the car. The mid plate and transmission mounts are done but I never got the front plate mounts because there was no tubing or frames forward of the shock towers. So first step was to get some tubing up there. After freaking out over designs for a week I finally just put some straight tubes in place. They are welded to some frame rail caps I made with my press brake.



I also decided in mounting the turbos low and wide instead of in the grill.




I cut these motor plate tabs out of 1/8" 4130. I drilled some holes, half welded everything and removed the engine and transmission. There will be support tubes going to the top of the strut tower later after I get the CC plates figured out





I then used some creativity with floor jacks, cinder blocks and 2x4s to slide the car forward on the jig. I now have a structure under the rear of the car to make all that crap back there. Success

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Old 03-12-2018, 11:59 PM   #206
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Better out gas those valve covers some more, I used to do 400 for an hour, take em out cool them down wipe down with denatured alcohol and repeat...

Looking good on the cage progress!
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Old 03-13-2018, 12:06 AM   #207
 
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Better out gas those valve covers some more, I used to do 400 for an hour, take em out cool them down wipe down with denatured alcohol and repeat...

Looking good on the cage progress!
I welded everything, baked it, applied jb weld, baked it, sanded smooth, baked it. Each time was for 30-45 min and one of them got to 375-400* I think. It's only like 1/16" deep so I'm hoping no issues lol. They're already at the coater
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Old 03-13-2018, 07:13 AM   #208
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I love watching your up dates. Good work man.
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Old 03-13-2018, 11:15 AM   #209
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Can't wait to forklift this bitch while eating a pizza puff
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Old 03-13-2018, 11:30 AM   #210
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Yes, awesome work Man. You've got dem skills!
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Old 03-13-2018, 02:00 PM   #211
 
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That wheel offset looks like an 80’s G-body offset. Lol

Glad to see you are making progress.
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Old 03-27-2018, 12:09 AM   #212
 
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With the jig all moved back I was able to start working on the rear of the car. It needs a tube at the rear bumper for the parachute, and down bars from the main hoop of the cage. The rear frame rails will then come back as well, and it will all triangulate. Pro mod style





With the rear tube all level and squared I was able to start connecting the dots and welding things up. Getting the outer tubes in the correct place sucks with my OCD. Gusseting and bracing after that is muchhh easier as the locations are fixed




I built a removable parachute sleeve and welded that in place as well. It will get braced, and a mount built later





My friend gave me these 4 link brackets with the holes already drilled out. I welded them up, made them boxes and I will make them into lower torque boxes. I think it should work well



I made a threaded rod thing to hold them in place and square. Using my noggin! The round cutout on the back of them is for a tube brace that will run to the rocker panels





And then the saga of @BeerOrGasoline begins.... He has signed his soul away to me and will be helping me finish this junk box in time to win a bet this summer


We got the rearend installed in the car. So many plumb bobs, string levels, duct tape, sketchy mounts, etc were used. From there we made some upper control arms and started mocking up the rear frame rails and shock mounts

Very few pics here cause Dan's a slave driver

We bent the rear frame rail and let it sit for a few days while I pondered life and death






I ended up deciding to scrap that tube, as I didn't like where the upper shock mount ended up being in relation to the bend/peak. We made a new one the next week and even got the other side done too. Moocho better








And then Daniel had some arts and crafts time making us some mock up fire bottles. These are getting mounted in the trunk area, so I'm trying to get the mounts welded in now while it's easier

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Old 03-27-2018, 12:21 AM   #213
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I know it probably keeps getting said, but Iíll stroke that ego some more. You do some amazing work, super talented!

Keep up with the progress!
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Old 03-27-2018, 12:33 AM   #214
 
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I know it probably keeps getting said, but Iíll stroke that ego some more. You do some amazing work, super talented!

Keep up with the progress!
Lol thank you sir. I like fabricating shit and I'm learning as I go. I've never done a build of this caliber from the ground up. There's already so many things I'd do differently if given the chance

@BeerOrGasoline's main job is to keep me moving along instead of designing and redoing shit four times to get it perfect. I've wasted so many hours fixing a tube that is 1/16" or 0.2 degrees off lol

And I have fun documenting it. It gives me some time to think about it from a different angle as I'm typing it up. It's also a great reference point for the future
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Old 03-27-2018, 09:08 AM   #215
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Looks sooo bad ass dude
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Old 03-27-2018, 06:09 PM   #216
 
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Great work PJ, I can't imagine how much time you have invested in this. Hope to see it up and running soon.
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Old 03-27-2018, 07:03 PM   #217
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It would be cooler if those were nitrous bottles.
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Old 03-27-2018, 08:18 PM   #218
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You should play this full blast when you work on racecar for inspiration...
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Old 04-09-2018, 03:03 AM   #219
 
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More progress! Things are starting to come together now it seems

We got the rear "frame rail" tacked in place. Instead of doing the normal mini tub and small frame notch, I decided to do a full tub and cut a chunk of the frame out completely. It was replaced with a section of new flat steel in the same thickness. I kept like 6" of frame at the rear of the car in the stock location to try and fit some class rules.






I got the anti roll bar assembled. It's a baller version from RJ race cars. It's 2" tubing with 1/4" walls, and then billet splined ends are welded on at the width needed. The arms go on the splines and connect to the rear like normal

after welding the ends on, you need to clean up the welds so a bearing can fit over them. Because the lathe I have access to sucks, I had to do this one side at a time. Which sucked cause it takes a while to cool down after tig welding at 180 amps


















And then @BeerOrGasoline came over for the shit show. We got the lower torque boxes installed all nice and level in the correct locations. And made lower control arms




We then started cutting and hammering and sawing and chiseling at the tack welds holding the cage to the body

And then I stole a forklift from my friends shop and drove it down the sidewalk. My neighbors must think I'm retarded




We used it and an engine hoist to get the jig out from underneath it








At this point it was late. We were tired, loopy and worthless. We dead lifted the body up and supported it very safely. And gave birth to a roll cage by dragging it out the ass






And now I have a roll cage that I can weld completely around, and flip upside down, etc

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Old 04-09-2018, 07:10 AM   #220
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:ROFL: at forklift activities. Great update pj
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Old 04-09-2018, 09:19 AM   #221
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Stealing a forklift FTW!
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Old 04-09-2018, 10:34 AM   #222
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My back still hurts.
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Old 04-09-2018, 11:15 AM   #223
 
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Nice progress. If you keep this up it looks like you might actually win the bet. haha
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Old 04-09-2018, 11:55 AM   #224
 
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Nice progress. If you keep this up it looks like you might actually win the bet. haha
I'm trying
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Old 04-09-2018, 12:36 PM   #225
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Very nice. I especially like the forklift shenanigans.
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