Build “Brophy Jeep” Street Legal Ultra4 4500 class CJ6

She warm brother :laughing:
And that's just doing a warm-up with run-up hubs on, no load. :laughing: But it does it for 24 hours straight, so it doesn't seem to mind.

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Enough of the derail, been watching this one from the background, killer build you have going here Rockchump looking forward to seeing it out there doing it. :smokin:
 
I like that even OEM professionals use the same folding table I carry everywhere with me.
I have wired many rigs on this thing.
 
And that's just doing a warm-up with run-up hubs on, no load. :laughing: But it does it for 24 hours straight, so it doesn't seem to mind.

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Enough of the derail, been watching this one from the background, killer build you have going here Rockchump looking forward to seeing it out there doing it. :smokin:
Now that’s a race car! So cool I could crawl around and geek out on that car all day!!
Thank you! I appreciate it!!
 
And that's just doing a warm-up with run-up hubs on, no load. :laughing: But it does it for 24 hours straight, so it doesn't seem to mind.

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Enough of the derail, been watching this one from the background, killer build you have going here Rockchump looking forward to seeing it out there doing it. :smokin:

What that?

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Now that’s a race car! So cool I could crawl around and geek out on that car all day!!
Thank you! I appreciate it!!
It's an incredible car. After ~10 years in pro Motorsports it's the only car I've ever been around that I could find less than a couple of 'why did they design this part this way?' Pretty much every component was well placed and thought out. But that's how you win Le Mans multiple years and absolutely stomp everyone around the world for years. :laughing:


What that?
Yep, gt1guy nailed it, that's the carbon airbox and filter feeding the drivers side turbo.
 
Anyone know what's inside that expensive header wrap?

HeaderShield is a bi-layer insulation and encapsulation system for anywhere you want to keep the heat in or out. Consisting of special, inner insulation layer and durable, stainless steel outer shell

"Stainless outer shell" is going to have to be very thin to form around headers. That's not exactly ground breaking and the thermal transfer properties of stainless are well known. So what's under it?

The list of what doesn't transfer heat isn't exactly a long one.

Ceramic in some form of matrix?

Carbon in some form of matrix?

Both in some form of matrix?


The stuff on that Audi LMP looks beat to ****. I'm sure it doesn't have a easy life and it may have been on there a while, but with the way parts would be timed out on that car, that stuff looks horrible.
 
It's an incredible car. After ~10 years in pro Motorsports it's the only car I've ever been around that I could find less than a couple of 'why did they design this part this way?' Pretty much every component was well placed and thought out. But that's how you win Le Mans multiple years and absolutely stomp everyone around the world for years. :laughing:



Yep, gt1guy nailed it, that's the carbon airbox and filter feeding the drivers side turbo.
Bucket list race to go watch!! If you need a water boy I’m about to renew my passport! lol
 
Anyone know what's inside that expensive header wrap?


The stuff on that Audi LMP looks beat to ****. I'm sure it doesn't have a easy life and it may have been on there a while, but with the way parts would be timed out on that car, that stuff looks horrible.
Never cut it off, but nothing obvious to see in there when you peak through the pass-through holes for getting to the manifold nuts.

Yea, it's on vintage car. When they campaigned these cars the manifolds would have been lifed-out and tossed in a dumpster, I guess they weren't worried about the poor bastards wanting them to look good 20 years later when there were no new manifolds left :homer: But to me that's a testament to how tough the wrap is, these manifolds may well be ~20 years old and have 15k KM on them. Definitely a way harder life than any LS/ultra 4, etc will ever be on them, at least in terms of heat. Rock strikes, mud etc I can't speak too obviously. I could post pics of the same wrap on a new V10 manifold, but you can look at the sales brochure to see pics of it new. Haha

As far as the manifold on the LMP car, the flanges get inspected for cracks regularly. Sure, they could be sent out to get rewrapped, but the wrap still does its job of protecting the components around it. It would be a different story if the goal was to squeeze every bit of thermal potential out of the turbo system, but for an old guy to go out and run 45 minute races and wax the field, they work just fine. Vintage stuff is a whole different world for better or worse.
 
Never cut it off, but nothing obvious to see in there when you peak through the pass-through holes for getting to the manifold nuts.

Yea, it's on vintage car. When they campaigned these cars the manifolds would have been lifed-out and tossed in a dumpster, I guess they weren't worried about the poor bastards wanting them to look good 20 years later when there were no new manifolds left :homer: But to me that's a testament to how tough the wrap is, these manifolds may well be ~20 years old and have 15k KM on them. Definitely a way harder life than any LS/ultra 4, etc will ever be on them, at least in terms of heat. Rock strikes, mud etc I can't speak too obviously. I could post pics of the same wrap on a new V10 manifold, but you can look at the sales brochure to see pics of it new. Haha

As far as the manifold on the LMP car, the flanges get inspected for cracks regularly. Sure, they could be sent out to get rewrapped, but the wrap still does its job of protecting the components around it. It would be a different story if the goal was to squeeze every bit of thermal potential out of the turbo system, but for an old guy to go out and run 45 minute races and wax the field, they work just fine. Vintage stuff is a whole different world for better or worse.
That makes me feel better for wanting to spend the money on the good stuff. I’ve had a buddy literally slow cook their feet from KOh with similar setups. Plus with trail wheeling I didn’t want to worry about cooking my feet being in the car a few hours at a time especially since I’m dumb and like wheeling in flip flops! lol
 
Never cut it off, but nothing obvious to see in there when you peak through the pass-through holes for getting to the manifold nuts.

Yea, it's on vintage car. When they campaigned these cars the manifolds would have been lifed-out and tossed in a dumpster, I guess they weren't worried about the poor bastards wanting them to look good 20 years later when there were no new manifolds left :homer: But to me that's a testament to how tough the wrap is, these manifolds may well be ~20 years old and have 15k KM on them. Definitely a way harder life than any LS/ultra 4, etc will ever be on them, at least in terms of heat. Rock strikes, mud etc I can't speak too obviously. I could post pics of the same wrap on a new V10 manifold, but you can look at the sales brochure to see pics of it new. Haha

As far as the manifold on the LMP car, the flanges get inspected for cracks regularly. Sure, they could be sent out to get rewrapped, but the wrap still does its job of protecting the components around it. It would be a different story if the goal was to squeeze every bit of thermal potential out of the turbo system, but for an old guy to go out and run 45 minute races and wax the field, they work just fine. Vintage stuff is a whole different world for better or worse.

Ok, that all makes perfect sense. And you're right, it's also a testament to how well that wrap lasts.
 
My first jeep in 2002!
Got it my senior year bone stock!
1994 Jeep YJ 4.0L H.O. 5speed.
Did the usual intake with header and exhaust! I drove if everywhere including some light trails and washed out fire roads around where I lived.
2003 I broke the rear driveshaft strap bolts and it was reason enough to axle swap it and finally lift it. Originally it was 9” Dana 44 combo but after I geared and locked them I sold them for 1ton Chevy 60/14bolt. RE spring over springs with BTF shackle reversal. 5.13 Detroit’s F/R.
Did a SM465/NP205 in it with a whopping 65:1 crawl ratio! With 39” TSL and double headlocks it was a snow wheeling beast!! Did fordyce, rubicon, moon rocks a bunch and slick rock! And a bunch of snow wheeling. I learned a lot and made a lot of friends through the process ultimately getting me into competitive rock crawling and then desert racing and kOH. With stock power steering nearly no crawl ratio and. Detroit lockers I got really good about picking lines! lol. I learned the “locker Walk” when you just shove the inside rear tire against the big rock and mash it so the other 3 tires burn you around like a cutting brake! lol
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Modern problems require modern solutions. Since we swapped from normal to reverse throw that straight tube was now problematic. For anyone that thinks it won’t be stronger bent than straight you’re right. But it’s still 2”x.120” wall 4130 so I feel pretty good with it. A lot of cars don’t have those tube at all. So it’s better than. Nothing.
I know it’s kinda dumb but I’m so stoked on how the exhaust turned out!
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Why did you have to move to reverse throw on the brake pedal?
 
Why did you have to move to reverse throw on the brake pedal?
Even with the 60% thermal efficiently of the header shielding and it was still very close to the exhaust. Closer than I wanted for reservoir. Going remote reservoir would have helped a little but the master cylinders would still be right there. This simplified the fire wall and kept the brakes more away from the exhaust. Most trail wheeling applications would have been probably ok but ripping around hammers and or actual racing for hours on end. I didn’t want to risk it.
 
It looks good. Curious is it the front or rear fenders that you don't like?
Well it’s not that I don’t like the front fenders. I’m pretty sure the 39’s will party all over them when flexed and turned. They didn’t bother to check because frankly it wouldn’t have changed anything. I’m back to loving the rear and being happy with the initial design now that the tub is all hung. It’s tough when it’s not finished.
Even the grill looks great from most angles but one picture it looks wonky. But I’m keeping it. It ruffles people’s feathers so that’s kinda fun!
 
i bet the front tire eats the tube fenders for lunch when articulating
Yup exactly. I bought the fenders before I built the frame and used them for mock up. It was known early on that they were most likely not enough clearance. The hood will look more like an Erik Miller car or the Liquid Iton Industries car! Which I love the looks of.
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