2012 jku Perkins turbo diesel - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 34 Old 01-06-2018, 08:39 PM Thread Starter
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2012 jku Perkins turbo diesel

Ive had this jeep for 3 years and its been decent but burns oil in passing gear. It went from 17mpgs down to 10 and going through oil like crazy. Im annoyed with the gas engine and have a 1990 perkins 4cyl diesel waiting to go in. Behind the perkins i have a t18 with a novak adapter that bolts to the jeeps nv241. Ill upgrade to the 241or eventually. From there to a set of 2002 superdutys with 410s sitting on 35s til i can go bigger. Suspension is the mopar 3.5 with fox resivours. Just started tearing out the 3.6l today so pics soon. I thought id make a build thread to help out. Theres not alot of info on the perkins so.....
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post #2 of 34 Old 01-07-2018, 09:47 AM
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This should be cool. What kind of power numbers does the Perkins put out? To be honest, the name Perkins sounds vaguely familiar, but I have no idea what their used in originally.

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post #3 of 34 Old 01-07-2018, 10:07 AM Thread Starter
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Perkins was bought by caterpillar and was used in massy fergison tractors, ford rangers, sailboats, landroavers, jcb backhoes, forklifts, deliverytrucks.....
Power numbers are compareable to the cummins 4bt.
Ive turned the pump up and added a turbo so it will need a dyno run or 2.
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post #4 of 34 Old 01-07-2018, 11:15 AM
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Definitely interesting! Thanks for making a thread.

My only direct experience with Perkins diesels was fixed-RPM applications in gensets and hydrostatic equipment
- reliable as a fookin' hammer there.


What state are you in, that this dolphin-killing eco-terrorist swap is allowed?

(I just need to know what specific state to be jealous of, from Kalifornistan )

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post #5 of 34 Old 01-07-2018, 04:29 PM Thread Starter
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Im in new mexico. Diesels arent regulated like cali. No emissions. As long as u meet code for lights and safty itll pass.
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post #6 of 34 Old 01-22-2018, 06:20 PM Thread Starter
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Weather has put me on a holding pattern. waiting on a few more parts to b ordered so no biggie. Tracking down a custom made pully set up to go from a v to a 6 rib serp setup is a pain. Only 3 companys make them and all are outrageously priced. S&W diesel has the 2 i need for 345.
Just a few more parts and ill be ripping the 3.6 out on the next sunny day. Ill be sure to take lots of pics to document this build. So far i havent found any jku with this engine so itll be fun.
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post #7 of 34 Old 03-01-2018, 01:02 PM Thread Starter
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Parts have been rolling in slowly. Got the tank, fuel line, new starter to replace the 24v one. Adapter for the trans to tcase is here with the t18 rebuild kit. Ordered trusses from artec, gps speedo, gears to match the front axle. Just waiting for the weather to warm up a bit more to start tearing into this. Tax return is almost gone!
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post #8 of 34 Old 03-01-2018, 05:02 PM
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Awesome, can't wait to see how this goes.

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post #9 of 34 Old 03-01-2018, 05:08 PM
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Quote:
Originally Posted by Chickenhawk4.236 View Post
Im in new mexico. Diesels arent regulated like cali. No emissions. As long as u meet code for lights and safty itll pass.
Doesn't an engine swap have to be at least emissions compliant as the vehicle's original engine?

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post #10 of 34 Old 03-02-2018, 01:16 PM
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What the EPA requires and what states enforce are two totally different things. The EPA doesn't have any practical means for enforcing their rules. They mostly rely on states to monitor those things.
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post #11 of 34 Old 03-02-2018, 07:50 PM Thread Starter
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Diesels are unregulated on emissions here. In my county i have no emissions even on my gas truck. And if they ever do do emisions il retitle it as a diesel and when it does come up for emissions they only check safety thins like light, blinkers, brakes....im not worried.
Anyway..... had a couple of hours to start this emissions hating, snowflake pisser offer.
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post #12 of 34 Old 03-05-2018, 10:08 AM
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Awesome. Will be watching this unfold.


For Godsake, get that child a wrench.

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post #13 of 34 Old 03-09-2018, 11:45 PM Thread Starter
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Got in a ton of parts and picked up a new jd2 bender. Cutting on the axle to make room for the trusses. I got the tank and evap can out and the muffler and a ton of bolts underneath. Not a lot but steady as she goes. Should have the engine out sunday.
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post #14 of 34 Old 03-11-2018, 10:20 AM
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What is the size difference between the Perkins and the stock 3.6?

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post #15 of 34 Old 03-11-2018, 01:16 PM Thread Starter
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3.6 to a 4.0 more fuel efficient, a little less horse power, and alot more torque.
The perkins is longer and a bit heavier but worth the trouble.
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post #16 of 34 Old 03-12-2018, 07:39 PM Thread Starter
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Weather was cold so knocked one thing off the list.
Used a sharpened tip to a soldering iron and gutted the instrument cluster so i could use the housing.
Just need to get an egt gauge in it and turn signal indicator lights and its done.
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post #17 of 34 Old 03-25-2018, 08:26 PM Thread Starter
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Some progress! Got the engine out and trans. Getting the shifter out was a pain. Just about ready to stab the new engine and trans and start the wiring and clutch peddal and linkages. Yay! No going back now!
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post #18 of 34 Old 03-26-2018, 09:28 AM
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Quote:
Originally Posted by Chickenhawk4.236 View Post
Weather was cold so knocked one thing off the list.
Used a sharpened tip to a soldering iron and gutted the instrument cluster so i could use the housing.
Just need to get an egt gauge in it and turn signal indicator lights and its done.
That gauge cluster came out bitchen!

Am I correct to assume the Perkins has no electronics that go with it?

What are you doing to keep the Jeep side happy?

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post #19 of 34 Old 03-26-2018, 10:40 AM Thread Starter
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Yes the perkins is all mechanical. I went with all aftermarket gauges because it was a major headache trying to keep the computer happy with the new swap. Im only keeping the wiring for everything but the old engine. Ill need to hard wire only a few things. When i get there ill post on what needed redone.
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post #20 of 34 Old 06-17-2018, 05:12 PM
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Quote:
Originally Posted by Chickenhawk4.236 View Post
Yes the perkins is all mechanical. I went with all aftermarket gauges because it was a major headache trying to keep the computer happy with the new swap. Im only keeping the wiring for everything but the old engine. Ill need to hard wire only a few things. When i get there ill post on what needed redone.
sub'd .....awesome job so far
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post #21 of 34 Old 06-18-2018, 05:13 AM
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im not quite sure how I missed this thread / OP. This is cool & you’re right; not much info but thanks to you there’s gonna be ....sub’ed




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post #22 of 34 Old 06-28-2018, 10:25 PM Thread Starter
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So much going on.....
Picked up intercooler, tubing, stage 2 water meth kit, wiring like crazy, axle parts......
Front half almost wired
Engine going in soon
Still waiting on pullys from s&d diesel
Ordering wheels from trailworthy fab (12 bolt beadlocks 16.5
Ordering tires tsl 38.5s
Almost there just money!
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post #23 of 34 Old 06-28-2018, 10:31 PM Thread Starter
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On the electrical side note.....
The gauge cluster is a computer so if removed a shit ton of rewiring is involved.
The turn signal indicator switch is useless so a universal one is needed. Also i am witing it like an old cj so its much easyier to trouble shoot and wire. Where im at now is the power door locks are giving me issues but most everything else is figured out. Still has acc off the key and now has a push button start and wipers and lights have been rewired to switches. Pics to come soon!
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post #24 of 34 Old 08-31-2018, 05:09 AM
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Updates?
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post #25 of 34 Old 08-31-2018, 07:28 AM
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Quote:
Originally Posted by j3ff3ry_j33p View Post
im not quite sure how I missed this thread / OP. This is cool & you’re right; not much info but thanks to you there’s gonna be ....sub’ed


Same here. We need updates!

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