Novak Conversions Jeep Wrangler TJ engine mounts

Nothing I need, everything I want (2005 TJR, impact orange)

While the "truss" style upper control arm mount is reasonably well designed and fairly stout, it is still doing the job that was shared between two upper arms previous. I've seen a lot of carnage in roll overs so I wanted an extra bit of strength between the truss and the axle housing. The weld around the two cut off ears is a poor bond since it is to cast material. By filling the gaps with weld, that adds a mechanical connection that won't let it more laterally. Then, even if the welds crack all the way around like some cast welds do, they won't crack in a perfectly straight line that would let the truss lift straight up off off the ears.

Of note- the cracks or joints at each of the bends in the truss flanges should not be welded until last. Welding closes them up and pulls the two ends towards the middle and the truss won't fit.

The appearance of the pieces we weld on should also be noted. They are a uniform gray, that's because we have sandblasted each piece. I wanted a good key for the finish paint and then I wanted a good key for the weld through primer which is a high zinc content version in this case.

Which weld through primer are you using?
 
@psrivats, congrats on getting "everything you want" (especially after being sans-TJ for a bit), and bravo, @mrblaine, for more incredible work shared for those of us who are learning the best way to build a TJ! My build is very similar to yours, psrivats, and building it is exactly the stress-relief I need from a day job that's lost its luster! I'll be following this because it'll sequence quite nicely ahead of my build.
We need to get very clear on something. I don't know that I do anything the "best" way. I do things in a way that make sense to me based on a particular frame of logic. I can explain why I do something and the problem I have identified and am attempting to solve. My why, my problems, and my solutions to them may not fit everyone's needs so they are not gospel and should never be taken as such. I have a way I do things, I can explain why.
 
Which weld through primer are you using?

I have 2-3 different ones that I use for no particular reason. I don't know enough about them to know if I have a good one or a crap one. I'll get the names today for you. All I really know is I had more of them than I thought and the fact that they are zinc based sorta freaks me out a bit due to knowing how hard it is to weld galvanized and the poor weld quality that produces.
 
I have 2-3 different ones that I use for no particular reason. I don't know enough about them to know if I have a good one or a crap one. I'll get the names today for you. All I really know is I had more of them than I thought and the fact that they are zinc based sorta freaks me out a bit due to knowing how hard it is to weld galvanized and the poor weld quality that produces.

I was hoping you had come up with some reasons why one is better than the other. IMO they seem to fence sit as being a useful gimmick. I like the idea I question how well it works though.
 
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I was hoping you had come up with some reasons why one is better than the other. IMO they seem to fence sit as being a useful gimmick. I like the idea I question how well it works though.
I do not have any reasons why. Reading about this, they are supplied to prevent or slow down corrosion between sheet metal panels when doing body work. You are supposed to apply it, let dry and then do your plug welds. That is a reasonable approximation of what I'm after inside the long stiffener, areas I am unsure I will get lots of paint coverage into, and some other bits. I have no better solution except to strip out the axle housing, get it galvanized and that will never happen. I have no idea if this will work as well as I want it to but I don't know what else to do.
 
I have a way I do things, I can explain why.

Yes, you do, and yes, you can. That's rare, and why I used the term "best." In all our interactions (forum posts, emails, phone calls), you always rely on your extensive personal experience building TJs, but more importantly, your ability to think through a problem and possible solutions, to determine an appropriate course of action. Having that as a resource is incredible to me. I can build my LJ and be confident that my trial and error re-work will be substantially reduced. I really appreciate it, and want to give you kudos because you don't have to give so much of your time to all of us. 🙏
 
Yes, you do, and yes, you can. That's rare, and why I used the term "best." In all our interactions (forum posts, emails, phone calls), you always rely on your extensive personal experience building TJs, but more importantly, your ability to think through a problem and possible solutions, to determine an appropriate course of action. Having that as a resource is incredible to me. I can build my LJ and be confident that my trial and error re-work will be substantially reduced. I really appreciate it, and want to give you kudos because you don't have to give so much of your time to all of us. 🙏
In a different life, my absolute fulfillment would have been to be a teacher of complicated things to those with a desire to learn. In this life, I get a smattering of that which is highly diluted with arguing with idiots. Were it not for the former, the latter would be much less, probably to the point of just not doing it.
 
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I do not have any reasons why. Reading about this, they are supplied to prevent or slow down corrosion between sheet metal panels when doing body work. You are supposed to apply it, let dry and then do your plug welds. That is a reasonable approximation of what I'm after inside the long stiffener, areas I am unsure I will get lots of paint coverage into, and some other bits. I have no better solution except to strip out the axle housing, get it galvanized and that will never happen. I have no idea if this will work as well as I want it to but I don't know what else to do.

More of a general question than something I think you should change, but would "skeletonizing" the mini truss take away too much strength? It would certainly make it easier to get some sort of coating in there.

I suppose with something like an eastwood internal frame coating, as long as there is a small hole that is accessible, you could shove the nozzle tube in the truss and squirt it full of that stuff.
 
More of a general question than something I think you should change, but would "skeletonizing" the mini truss take away too much strength? It would certainly make it easier to get some sort of coating in there.
There are two pieces involved, the long tube stiffener and the mini truss mount over the diff. Which are you referring to?
I suppose with something like an eastwood internal frame coating, as long as there is a small hole that is accessible, you could shove the nozzle tube in the truss and squirt it full of that stuff.
Ideally, I'd like a structural expanding foam with rust proofing properties I could fill certain areas with. I don't trust the complete fill ability or the rust proof aspect.
 
...eastwood internal frame coating, as long as there is a small hole that is accessible, you could shove the nozzle tube in the truss and squirt it full of that stuff.
I recently had a good look inside the back of my frame when I cut it for the rear frame raise. I had done the Eastwood internal coating a couple of times prior and pretty thoroughly, I thought. It was surprising how much area had not been coated.
 
Continuing the build photos ..

After the truss/stiffener was finished, it was time to start on the swaybar links.

Here is the raised swaybar link mount getting mocked up. Blaine pulled the upper ball joints so the heat from welding won't mess up the races.

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After welding them in place using the original mounts as locators (and making them look as if they came that way originally!) ...

This jeep is getting the BMB hydro assist setup. Blaine built the inner brace for the hydro-assist mount since the bolt on mount won’t work with the Savvy stiffener welded on. He also trimmed the corner off of the left side spring perch and made a new skirt to stiffen it back up. This is done so that the corner of the spring perch will not hit the trackbar barrel at full stuff.

There is a lot of inner detail in this work for maximizing everything that is is possible that only comes from experience and refinement over years.

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And after finishing both sides, Blaine prepped and painted the axle with 2 coats of the Black Top KBS satin.

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Continuing the build photos ..

After the truss/stiffener was finished, it was time to start on the swaybar links.

Here is the raised swaybar link mount getting mocked up. Blaine pulled the upper ball joints so the heat from welding won't mess up the races.

View attachment 550789


After welding them in place using the original mounts as locators (and making them look as if they came that way originally!) ...

This jeep is getting the BMB hydro assist setup. Blaine built the inner brace for the hydro-assist mount since the bolt on mount won’t work with the Savvy stiffener welded on. He also trimmed the corner off of the left side spring perch and made a new skirt to stiffen it back up. This is done so that the corner of the spring perch will not hit the trackbar barrel at full stuff.

There is a lot of inner detail in this work for maximizing everything that is is possible that only comes from experience and refinement over years.

View attachment 550791

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And after finishing both sides, Blaine prepped and painted the axle with painted it with 2 coats of the Black Top KBS satin.

View attachment 550796

🤤
 
I forgot to mention it before, but both the front and rear axles are already re-geared to 5.38s (Revolution) for the 35s/42RLE. And Jeep will have ARB air lockers front and rear replacing the factory system. Many thanks to @Blackjack for helping us with a great deal on the ARBs, thank you Sir!

I had 5.38s with 33s/42RLEs in the black jeep and really liked how peppy it felt. I talked to Blaine in detail about 5.89s/42RLE since the Grimmjeeper numbers looks fantastic. But the driveshaft rpms become pretty darned high at hwy speeds and after talking to experts with lots of experience, we realized that it's not trivial to get guaranteed balance at those kinds of speeds and there is always an element of risk even with doing high speed balance and all that. Also, if we went 5.89s and realized that we run into problems, it becomes quite expensive to back to 5.38s, both money and time/effort wise. Given my distaste dealing with vibration and all these factors, we decided on 5.38s on the orange jeep.
 
Next, it was time to work on the front axle. The axle side LCA mount was cut out, and an Iron Rock offroad mount was welded on. You can see the tiny row of punched dots that are used to mark the location of the mount. It's a small detail but something borne out of practice and experience.

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Next, the track bar bolt and stabilizer bolt reinforcement plate were added. You can see the bend in the bracket to get them exactly at the angle needed to get it to sit perfectly. Aso notice the hardware .. Blaine is a walking encyclopedia when it comes to understanding what hardware to use where and nothing is chosen without purpose.


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Then, the factory cast control arm mount was removed and trimmed ...

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... and trimmed exactly where it needed to be when the truss goes on.

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Novak Conversions Jeep Wrangler TJ engine mounts