REVIEW: Everything Wrong With A 3.9 Cummins 4BT

4BT Review! What could possibly be wrong with the 3.9 Cummins 4BT diesel engine?

Everything you need to know about the 3.9 Cummins 4BT diesel! Turbo options, KDP, vibration, rebuildability, fuel pumps, tuning, and ultimately how it stacks up against other engines - including other Cummins engines. #RichReviews #EWWengines

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[Tinker]

It was great seeing 4BT popularity increase & see them swapped into all sorts of things, but that also blew up the average prices & made them much less of a "good" swap option :(

[roundsm]

Thank you for actually doing honest videos. I just got chewed by a bunch of Cummins nuts trying to convince me that you can push 800 HP out of a 4BT and I can’t convince them otherwise. People somehow think everything Cummins makes is solid gold and always gonna produce the power of a Semi in a package for your car. I guess I shouldn’t complain because they break them and I profit, but God I hate rebuilding engines trashed by people with no concept of reality.

[jackgillen]

The om606 is a beast of an engine we have had one at 350 horse for the last 4 years and 120, 000 miles running perfect

[WelkerFarms]

You answered a lot of questions I had in regards to the 4BT! Thank you!

[dannymacpherson]

I would love to see a Volkswagen TDI ALH 1.9 build

[vvvvvv]

just finishing up my om606 6 speed swap into a 94 Mercedes wagon with a dieselmeken pump. it's a beast. did a 4bt in my 96 Silverado 3500 while you were doing the tahoe. no complaints with the 20 mpg running back roads to work but the Mercedes is a much better performing engine.

[clayferguson]

My favorite diesels being from the diesel industry just like you
1. Series 60
2. 3406
3. Cummins big cam
4. DT466 for the simplicity

[jett]

Should mention something on Toyota diesels. The ‘Aussie’ ones like the 1hz and 1hdfte

[Borgschulze]

Rich, nice seeing you throw a clip of my car in there again Haha. It's the 4BT of BMWs... I recently got my hands on a 525tds, which I like to call the BMW 6BT Haha. Much much smoother engine, doesn't use much more fuel either.

Hope you find an OM606, I'd like to have one... seen a few for sale as complete car for around $3k-5k, cheaper than a fresh 4BT and it comes with nice leather interior!

[tallguy]

Really, only 105 HP? I thought because of the awesome red paint it would boost the HP to 110?

[darcybowyer]

Always feel like the USA missed out on Land Rover Diesel engines. You might think I’m nuts but a Tdi200/300 is a stout engine. Even a Td5 with steel dowel pins is a great option. For someone with a high mile Tdi 300 they are great engines. Don’t confuse it with a Diesel Turbo which can trace its lineage to the original Land Rover diesel. Avoid at all costs.

[mattyb]

Try get your hands on a BMW M57, like an OM606 but better!, common rail, twin cam, DI, and people swap them into anything over in Europe, boats, 4x4s, classics and make lots of power with small mods! Lots do millions of miles in taxis.

[OldSchoolDiesels]

I love the 80’s dt466. Swapping one into a 71 Loadstar. They are great engines, easy to swap and work on

[aboutcheezits]

For me it seemed like a good idea, have a 81 bronco with a ford 300, rated at 160hp 280ft lbs, got 12 mpg, so nearly the exact same weight, and torque could be had from a p pump 4bt that i'm putting in now, going to be a overland/part time farm truck type build

[andyware]

Just finished my OM606 that I put into an OBS Ford F-150. Great engine and well suited for that size truck. Looking forward to some German diesel videos.

[bparkinson]

Rich... you saw my harmonic balancer video! The idea came from you. With water bottle. You inspired me to build the 29 ford truck. Thanks!

[marineraider-]

Isuzu 6SD1. I've see one of these engines go through two Keohring 6633 material handlers with no rebuilds and one injection pump. It was serviced every 350 hrs and oil samples were taken. The first MH had 23000 hours on it the second I'm not sure but we cut the crane up and sold the engine.

[ChuckUC]

I have a 91 Dodge Cummins, early 2007 Dodge Cummins and a 4BT 3.9 Cummins turbo400 trans currently in a Rat Rod ; all of them run nice and all have minor mods. The 4BT 3.9 105 hp I bought 5 years ago for about $5k on eBay from Chad McKenney from Lebanon Ohio, he seems to keep a steady supply.
Your YouTube channel has been greatly useful to me, thank you greatly, and keep videos coming.
Old Dog Learning New Tricks

[-trn]

Real shame aboaut the 5.0. Such a promising platform.

I've always been impressed by the small VW diesels. Guys were taking the PD150 out of a 4th gen, upgrading turbo and chucking a mechanical pump on it and pushing over 250hp and almost 400ftlb. Totally enough jam for a half ton or suv.

[alexmatthews]

Great vid. What I've never understood is why Cummins didn't use grid heaters on all applications of both engines. Such a great system.