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Old 11-16-2018, 12:13 PM
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Coyote YJ

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Garage
Coyote YJ
I'll add some of the build pics and details about my the CoyoteYJ. As far as I know, it's the only Jeep with a modern Coyote 5.O. It's not completed yet (maybe 3 weeks left?). The engine and transmission are from an F-150, the engine has a mild tune and a Power by the Hour harness to make it work in the YJ, it also has headers and a CAI. It will have around 400-450HP when done (I'm not having it dyno tuned). It will also have a more aggressive exhaust (not installed yet. It started as a 2.5 5 speed 1995 YJ Rio Grande. It now has an Atlas II transfer case two speed for both axles and a ford 8.8 rear with a trac loc. The front is still the Dana 30 open diff. I may lock it later, it will mostly see lite off road and be a driver. All of the accessories from the F-150 have been used as well. We're also going to have paddle shift (actual buttons on the back of the steering wheel. New gauges to work with the drive by wire system and the auto 6r80 trans. So, I'll get started, feel free to ask. Oh, I'm not building it, I'm having it done professionally as I wanted it done at a higher level and shorter time frame than I would ever be able to accomplish! Sorry, started this in the TJ forum by accident so I moved it here.

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Old 11-16-2018, 01:06 PM
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A few random pics

So, on this PC I can't really see what i'm uploading until it's loaded (dangerous!) Above are the pics of the metal cloaks installed and the 37 Treps on the Revolver wheels. Sorry this isn't going in any sort of sequence since I can't see the pics I'm loading using the upload tool here. If anyone has tips, please share.
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Old 11-16-2018, 01:08 PM
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Here is the Coyote and 6r80 with the Atlas II before being test fitted, then the Atlas and after it's been fitted into the YJ.
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Old 11-16-2018, 01:14 PM
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Closer to being done

Here are a few more with the front after the new suspension is installed and the new wheels and tires.
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Old 11-16-2018, 01:16 PM
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In the last one above you can see the engine mount that was made by Nick at Happy Trails 4x4. The detail is incredible and the strength is awesome! Obviously, they didn't have one at Napa.
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Old 11-16-2018, 02:28 PM   #6
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That's gonna be awesome. I'm guessing you found a donor Ford? Or was the 5.0 your target motor? If I could talk a deep pocket company into wrecking my Ford PU, I'd love to pull the V-10 and 5 spd tranny and stuff it into my '89.
What are you using for cooling?
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Old 11-16-2018, 03:35 PM   #7
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Can't wait to see this thing finished! I would definitely suggest looking into a stronger front axle if you do plan to wheels it even the mildest. That will be a lot of hp for Tiny front axle!
Also do you plan to have it lifted and put bigger tires on?
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Old 11-19-2018, 08:06 AM
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Coyote engine

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Originally Posted by 283 YJ View Post
That's gonna be awesome. I'm guessing you found a donor Ford? Or was the 5.0 your target motor? If I could talk a deep pocket company into wrecking my Ford PU, I'd love to pull the V-10 and 5 spd tranny and stuff it into my '89.
What are you using for cooling?
I atually liked the Coyote for primarly for the sound and American v8 with a flat plane crank. I was leaning LS initially, but everyone has done that, and the Coyote was a great alternantive. Plus, it's 1of1. I kinda like that, at least for now. The radiator is a Smith all aluminum (I think it's Smith). I'll add a pic.
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Old 11-19-2018, 08:09 AM
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Axle

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Can't wait to see this thing finished! I would definitely suggest looking into a stronger front axle if you do plan to wheels it even the mildest. That will be a lot of hp for Tiny front axle!
Also do you plan to have it lifted and put bigger tires on?
The axle will probably be next. It's got Dana 30's and won't be wheeled heavily. That'll be another $2k or or so..If i go with a D44. It has Maxxis 37's now, I don't think I'll go bigger for street tires.
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Old 11-19-2018, 08:13 AM
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Radiator

Here's the radiator going into the YJ. It's all set up now and installed. Hopefully, it will get fired off this week.
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Old 11-19-2018, 08:15 AM   #11
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That's going to be one Bad Ass Jeep!!!!
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Old 11-19-2018, 08:21 AM
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Getting close...

Here's one from the side with the lift and tires installed. Hopefully, it get's started this week and sent off to exhaust soon.
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Old 11-19-2018, 08:31 AM
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The engine is a take out fro an F-150 4x4 Platinum that has t-boned w 10,000 miles. I bought the engine (saw a vid of it running, transmission and transfer case along with the wiring harness and ECU). I had to get a new harness, new ECU and new transfer case as teh Ford was too long. I like the Atlas better, anyway... just didn't want to pay for one!
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Old 11-20-2018, 11:02 AM
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Rear angle

Here's the rear and you can also see the interior. I have a new top to be installed after it's done. It's the same as the Rampage Fastback here, that one lasted 4-5 years in Florida. Definitely worth the $$. The interior will also be one of the last on the list. I'm hoping the Adams drive shafts arrive this week. We'll see.
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Old 11-20-2018, 11:29 AM
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The radiator also has an oil cooler and trans cooler as well. I'm excited not to be overheating in traffic or doing revs to keep the fan going!
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Old 01-31-2019, 01:02 PM
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Back on the road!

I finally got the CoyoteYJ back from the shop. It took 7 months, and it's got to go back in for more tweaks and adjustments after 1000k miles. I currently have about 700 on it. It makes around 450HP, has a super low first so it crawls and makes way more torque down low than I thought it would. It also screams all the way up to 7500RPM. It rides way better than it did before, and now has NO issue on the highway. I'll try to post a video if I can get it to work.
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Old 01-31-2019, 02:35 PM   #17
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Dang that's cool, it looks great!
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Old 01-31-2019, 06:34 PM   #18
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Could you share some more pictures of that soft top? It looks like it slants towards the back and I'm into that. If you could get me a name of that soft top that would be sweet! Great build btw
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Old 02-01-2019, 10:26 AM
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Rampage Trail Top

The top is a Rampage Trail top. I had the last one on about 5 years. It's about $400 or so. I like it a lot. Here are a few more pics.
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Old 02-01-2019, 10:27 AM
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Dang that's cool, it looks great!
Thanks!
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Old 02-01-2019, 12:23 PM   #21
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What radiator is that?
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Old 02-04-2019, 08:54 AM   #22
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You are now 1 of 2! But 1 of 1 YJ. Nice build.
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Old 02-05-2019, 08:05 AM   #23
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What are you running for tires?
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Old 02-06-2019, 11:42 AM
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Awesome! Love it!

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You are now 1 of 2! But 1 of 1 YJ. Nice build.
I hope you love yours as much as I do! I'm definitely addicted to it and love the throttle blips. I'll check out your build. We have the same battery, too. Looks great.
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Old 02-06-2019, 12:52 PM
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Treps

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What are you running for tires?
I'm running 37x17 Maxxis Trepador radials. they're great on road on off. Have a aggressive side wall (not as aggressive as their competition tires). No roaring roll nice even at 80. Honestly, the engine's pretty load but I can't hear the tires.
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Old 02-06-2019, 12:59 PM
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Radiator

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What radiator is that?
I thoughtit was Smith, but it's actually a performance radiator from Superior Radiator. It also cools the transmission, cools up to 700 HP and 3000 stall. My transmission is a 6r80 with a trans cooler so we didn't have to use the separate cooler.
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Old 02-06-2019, 01:15 PM
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Off Road Camper, towing with the Coyote YJ

This post will stir the pot! I'm looking forward to seeing the responses. We built this to keep forever and drive! It won't be trailered, in fact, it was built to tow a small off road trailer. We bought an off road E-Pro RV (19ft total 20ft, and 3100lbs). The camper is also lifted and will stay completely off grid up to two weeks. So, I can tow it and stay and play without having to stay elsewhere. We plan to drive this rig across country and enjoy do some trails out west. The drive train was rated to tow 10,500. Obviously a SWB YJ isn't going to do that! We have a blue ox WDH and the trailer doesn't squat the Jeep. It pulls away as if it weren't attached and the big Wilwood 4 piston brakes and rotors bring it to a stop very well. The blue ox keeps the sway and bucking in check. It worked beautifully. I wouldn't tow a trailer much bigger than this, but it's good to know it does so safely. Here's a pic during our test run trip. The jeep did an amazing job and the RV was totally off grid for 3 days.
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Old 02-06-2019, 02:38 PM   #28
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You're right about stirring the pot.
YJs are rated for 2000# (+or-). The greater engine power doesn't mean much when you're pulling a 3100# trailer with a shorter vehicle that weighs near the same.
The Blue Ox hitch and the larger brakes are a plus, but I wouldn't feel safe doing it.
When I want to go somewhere, I want to GO. I don't want to wait for a non-windy day to pull my camper.

I hope for your sake that I'm being overly cautious. Please be careful and enjoy your rig.

Good Luck, L.M.
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Old 02-06-2019, 07:00 PM   #29
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This post will stir the pot! I'm looking forward to seeing the responses. We built this to keep forever and drive! It won't be trailered, in fact, it was built to tow a small off road trailer. We bought an off road E-Pro RV (19ft total 20ft, and 3100lbs). The camper is also lifted and will stay completely off grid up to two weeks. So, I can tow it and stay and play without having to stay elsewhere. We plan to drive this rig across country and enjoy do some trails out west. The drive train was rated to tow 10,500. Obviously a SWB YJ isn't going to do that! We have a blue ox WDH and the trailer doesn't squat the Jeep. It pulls away as if it weren't attached and the big Wilwood 4 piston brakes and rotors bring it to a stop very well. The blue ox keeps the sway and bucking in check. It worked beautifully. I wouldn't tow a trailer much bigger than this, but it's good to know it does so safely. Here's a pic during our test run trip. The jeep did an amazing job and the RV was totally off grid for 3 days.
That's a great setup. I've pulled about 3,000 with my YJ and the 350 in it. Same experience, very stable with the WDH and discs on all 4 had no issues stopping it. My current trailer maxes out a little over 2,000lbs.
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Old 02-11-2019, 01:07 PM
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It definitely did fine. I wouldn't tow without the WDH or brake controller. It did start to get hot in stop and go rush hour traffic towing the trailer though. I'm going to add the trans cooler back on vs only the dual pass. It was 82 and it bad rough hour traffic, but I don't want issues in the mountains or desert. I may use a dual electric fan also, we'll see. So, we'll get the bugs worked out now which is what the break in period is all about...it's also been about fun. Glad to have it back after 7 months.

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