4bt cummins jeep tj
 

I am building a 4bt to be transplanted into a jeep tj

Engine specs:
105 hp @2500
265 tq @ 1600
Ve injection pump

Build specs:
17.5 comp pistons with ceramic coat
40 hp injectors from acd engines
stage 1 camshaft from acd
stage 1 fuel pin
3200 gov spring
he341 turbo with a 9cm housing
modified common rail exhaust manifold

That's a pretty popular swap seems that 4bt is more popular than a small block anymore. Are you building a swamp buggy or a rock crawler or just all around play toy?
The engine looks nice. make sure to send pictures as you go!! cool stuff :rocking:

Downpipe flange progress

Fuel line shroud I made

My tig welder

That's too cool man I love that plasma cut Cummins upper cover.

Here is a look at my work space

Whats the difference in a CJ and a TJ jeep is a Tj like a Cherokee?
I can tell you take good care of your equipment do you make custom fabrications for sale? That fuel cover would sell like hot cakes imagine people could even chrome that.:rocking:

If there is interest I will make and sell them, all the pieces for my conversion will be available as well

If you want you could make a thread in this link
Basement Enterprises - Diesel Bombers
put some pictures of what you build and maybe someone will buy one. :tu:

Trying to find the right spot for the intercooler

I like it!! some fine engineering.
Hey can you post the link where you bought those elbows from?
Someone was asking about those the other day. There used to be a thread on here about it but IDK where it is.
Thanks

Here is a link to the mount I made for the turbo

http://forum.longevity-inc.com/showt...in-turbo-mount

The jku spring idea did not work as well as would have liked l, but no loss the springs were free l, but now I have 4" lift springs inbound for a 1978-79 bronco from jeff's bronco grave yard they are 20" un-installed and have a 410 lb per inch coil should work with the added 300 lbs

Version 2.0 of the turbo set up

Jon is that going to stick out of the hood? I love it :jump:

Version 2.0.1

Started building the alternator mount today

Not sure but I am gonna try to make it fit

Started mocking up the air con compressor

Air con bracket progress

1979 bronco springs are installed to lift and support the heavier motor

All cleaned up

Started welding

Factory jeep alt, ac comp and drive belt fit and are tight

Nice work!

That belt is a trip - is that factory something?

If it sticks out, you can always put a hood scoop to cover it:humm:

I broke the dipstick shroud so I replaced it with stainless steel

Duplicate post

Started fabricating the heater core plumbing

Before and after

Got the flywheel back from the machine shop and went to work on the clutch, I sourced a new pilot bearing from the local bearing supply but the minor diameter is 1mm to large so I made a bushing and pressed it into the bearing and has a good slip fit over the input shaft

I have been working on the shape of the motor mounts, still lots of gussetts to build and weld to stiffen them

Shot of the motor going in

Before the test fit

Modified alt pulley to drive a engine driven compressor

Air compressor and fan showed up

Started the air intake

Had to move the turbo but the little 4bt is mounted in the jeep:rocking:

Passenger side motor mount