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Unread 10-20-2011, 09:30 AM   #61
goldeaglejeep
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Quote:
Originally Posted by Spuznick242 View Post
Wow, $175 is a steal. I would love to get a set, I might even buy a set ahead of time before I really get into my project. If your making and selling the mounts how about you supply other hardware and parts needed to do a 4bt swap, like let the customer pick their own 4bt to save costs and the transmission as well as transfer case but supply the brackets and odds and ends to mount it all up so you could just supply the cheaper stuff and let the customer shop for the more expensive parts.

But have you thought about propane or even methane injection? I would imagine its possible on the 4bt but I'm not sure, I dont see why it wouldnt, my uncle's powerstroke V12 has it and it's a real power booster when tuned in well with the turbo.

What's the boost run at stock? I heard 13lbs but what turbo is mated to it? Sorry for all the questions, normally I research it but it's been crunch time for me at school.
Best idea ever.

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Unread 10-20-2011, 09:52 AM   #62
Spuznick242
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Originally Posted by goldeaglejeep View Post
Best idea ever.
Thank you! There's a few companies out there that specialize in 4bt swaps and the parts supplier but all their kits involve the customer buying the 4bt from them which is very costly and doesnt give you a chance to shop around for a deal.
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Unread 10-20-2011, 10:29 PM   #63
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SUBscribed. I seriously want to do this swap now. I'm just wondering how the Jeep drives/accelerates with the 4TB.
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Unread 10-21-2011, 06:34 AM   #64
Spuznick242
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Originally Posted by Xpress View Post
SUBscribed. I seriously want to do this swap now. I'm just wondering how the Jeep drives/accelerates with the 4TB.
Well stock it's got just under 400 pounds of torque and with stock gearing it wont even be enough strain to get the turbo to spool. It's a torque monster for it's size and weight being it's only 3.9L and only weights 200lbs more than the jeep 4.0L.

Using the turbo from the 12v would be sweet, I heard they run at 18lbs stock but I'm not sure about that. Their also designed to spool faster and for a larger volume of air. I've got turbo head right now with looking into turbos for my Saab.

A manifold that would work with the YJs around the firewall would be sweet so there's no hacking or squishing it in around the firewall.

A water injection would be pretty cool for trail use, so the intercooler works better and gets a real cool charge going to the turbo when the top speed is too slow to get enough air flow.

This is my favorite part about desiels, there's so many options and ways to build power effectently...you can get 30mpgs out of a jeep with the aerodynamics of a brick and be have more torque than anything else on the trail.
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Unread 10-21-2011, 09:32 AM   #65
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I know it depends on a lotta variables, but what price range should someone think about when hunting for a 4bt to yank? Just the motor itself, not including all the mods for the rest of the swap?
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Unread 10-21-2011, 10:13 AM   #66
Spuznick242
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Originally Posted by shanei View Post
I know it depends on a lotta variables, but what price range should someone think about when hunting for a 4bt to yank? Just the motor itself, not including all the mods for the rest of the swap?
A local junk yard has a $150 any engine deal and they had a frito lay truck in there so I'm guessing it would be $150 but usually I see them for sale online around $1000+ but that's an online dealer. You could buy the whole truck out of a junk yard fairly cheap (meaning like $2000) and take what you need and sell the rest for parts or scrap. The more time you spend shopping for the parts the less money your going to spend in doing the swap.
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Unread 10-21-2011, 04:59 PM   #67
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Quote:
Originally Posted by Xpress View Post
SUBscribed. I seriously want to do this swap now. I'm just wondering how the Jeep drives/accelerates with the 4TB.
It runs and drives great! It accelerates really well, and it really is not that noisy with a straight pipe going down the highway. I love it, its a lot of fun to drive.

The only thing that I kinda dont like right now about mine is the fact that the clutch is so grabby, but thats because it is a clutch designed for a 600HP pulling truck.....

I am hoping it is a little easier to slip the clutch with the re-gear and bigger tires. we will see.

Where did you get your stock numbers on the 4Bt? I am almost posative stock is 120HP and 220 Ft-lbs, There is a tag on the engine that says that, but I have seen youtube videos of people putting trucks with worked 4Bts on the dyno and hitting 350+ HP and 550+ ft-lbs. Thats my goal, those numbers are nothing to laugh at in a Jeep.

I love the fact that there is sooooo much you can do to diesels to make power too, thats half the reason I wanted to do this, diesels are more fun to work on than gas engines to me.

I also would LOVE to see a decent 4BT for $1000, I hardly find them for less than $2000, I paid $1800 for mine, and was willing to drive 8 hrs to get it it was such a deal to me, so seriously if you find somewhere to get them for $1000, tell me where.


Mounts will be ordered tonight. With any luck I will have them in 4-5 weeks.
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

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Unread 10-24-2011, 06:24 AM   #68
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With a straight pipe it's not too loud? That's pretty sweet, you dont have a problem passing inspection or anything without a muffler or cat?

I got the numbers of of the 4btswap website but I think it has more torque than 220ft, I could be wrong. I'm researching into the stock turbo and looking at what can it be replaced with. Cermaic ball bearings make the turbos spool faster than you can imagine, my friend has the same saab as as me but with cermaic bearings and it was a monster compared to mine with all similar work done other than the bearings.

Your only looking online at those prices...local smaller companies usually have lower prices at least in my area they are. I found from a local company I found them for $800 and after talking with the local junk yard they'll sell a diesel for the $150 engine deal so I just need to wait for another one to come in.

Hopefully I'll buy a set of mounts in a few weeks when their ready.
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Unread 10-24-2011, 06:45 AM   #69
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Its not too loud in the interior, if you hear it drive by it is loud. I want to dynomat a bunch of stuff to see if I cant make it real quiet.

I honestly have not even thought about getting it inspected yet. Usually deisels only have a visual inspection of the exhuast, and dont require a cat, and if I need to make a fake muffler I will. It is different for every state though, I am hoping I can make friends with a local mechanic and throw him a few bucks to overlook a few things.

I drove it through a long tunnel the other day with no top, and it was realllly loud.
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 10-24-2011, 09:14 AM   #70
Spuznick242
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Hahahaha. Dynomat in a jeep? Never thought that would ever be in the same sentence. But tunnles do that, there's a local small tunnle by my house and with the BOV on my saab it echos so I couldnt imagine what a diesel would sound like in it.

I'm not too concerned about how loud it is it is a jeep after all but at least for me I have a soft top which is on a good portion of the year unless I'm topless or have the hardtop on for the short yet harsh winters here.

What did you do for clearance for the turbo manifold and the firewall? Did you add anything as a heat shield? I like the sound of the turbo spooling and the BOV but I would really put some in there and then put a heat shield over it if you dont like that sound.
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Unread 10-24-2011, 10:04 AM   #71
youngjeeper11
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All I did was push the motor far enough forward to allow enough clearance, but I left myself a little more room than I needed, so the redesign of the mounts allows the motor to move back about an inch. The mounts leave a little room, about 1/2" to adjust it forward or back. You just need a hard bend right after the turbo, not ideal but it woks fine, I will put up better pics tonight and show you what I mean. I don't have any heat shields and everything seems to be fine, but it would probably be a good idea to add one.

I have also seen a thing they call a "Cobra head" which is a cast iron down pipe, that looks like a cobra head, but it does not look like it flows well, but it is an option, it would probabl give you anothr 1-1.5" of clearance
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 10-24-2011, 10:33 AM   #72
Spuznick242
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Ahhh. I think when I'm going to do it I'm going to push it back as far as I can and just leave enough room to squeeze in the turbo in. I think it's better for weight distrubution and I can clear it without a lift.

Since it's after the turbo I dont see it being too restrictive. I would love to see pics, I'm still planning out my build and I have projects that need to be done ahead of time.

I would rather use the stock manifold untill I can fab one because the cast iron isnt the greatest for turbos with manifolds and if it looks that restrictive than chances are it is but making it out of just steel or even aluminum would be pretty sweet.
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Unread 10-24-2011, 07:53 PM   #73
youngjeeper11
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 10-24-2011, 08:06 PM   #74
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Jeep 1:Used to have a 93 YJ 2.5l- 3.5" Black Diamond, Chevy TBI 5.7l V8, SM 465 4 speed, 8.8 rear( 4.10, L/S), rhinoline, Mile Marker 9000, NP 231, Had to sell it due to college
Jeep 2: 89/91 YJ, 4BT Cummins, NV4500, NP 231, Old Man Emu 2.5" suspension lift, 1" body lift.....Runs and drives, but very much a project
Interned at Novak Conversions 2 summers ago

Ask me about my 4BT Cummins Motor Mounts!!
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Unread 10-24-2011, 08:40 PM   #75
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From looking at what you posted it looks like you have a about a 3" straight section behind the turbo. That could be cut out and you could gain a little more room. Yes it would need to be tig welding to get a nice clean weld. But it could be done without messing up any power.
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For those who have not figured this out I'm old school but can handle the new too.
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