LT230 Transfer Case Spud Shaft & Engine In! × 4BT Cummins Discovery #18 [Land Rover Build]
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- เผยแพร่เมื่อ 15 ก.ย. 2024
- No potatoes were harmed in the making of this video, some metal was! Here I'm "divorcing" the LT230 transfer case with the help of machinist friend. And thankfully so, because otherwise there'd be a lot more fail in this video haha! Building this "spud shaft" links the transmission to the transfer case via a single u-joint, so the transfer case can be rotated how ever I want for optimal front/rear driveshaft angles AND maximizing ground clearance. All while keeping the length of the drivetrain as short as possible!
~ PART#18 in a project dubbed "Nanuuq" to swap out my lifted Land Rover Discovery 2's blown 4.0L V8 & boring ZF auto for a Cummins 4BT 3.9L turbo (Holset Super HX30W) diesel 4-cylinder engine (Bosch P7100 pump) with an NV4500 5-speed manual transmission. The AWD 4x4 will remain with the LT230 transfer case divorced behind it all, & plenty of Dodge 6BT parts too. Another big phase of my custom DIY build to create a do-just-about-anything off-road / overland rig. Did I mention it's a camper too?
~ BUILD THREAD: (Entire build) www.overlandbo...
~ BUILD THREAD: (4BT specific) www.4btswaps.c...
~ DISCLAIMER: Please do not do/repeat/imitate/recreate anything I do in my videos. JUST DON'T! It can be very harmful to bystanders, your person, your wallet, & your psyche. Don't risk the only "meat vehicle" you get!
![Divorced Transfer Case = Rover LT230 × 4BT Cummins Discovery #21 [Land Rover Build]](http://i.ytimg.com/vi/LRFSqo0y1g8/mqdefault.jpg)
![Divorced Transfer Case = Rover LT230 × 4BT Cummins Discovery #21 [Land Rover Build]](/img/tr.png)
"Divorced Transfer Case" = separate mounting via u-joints, & "Married Transfer Case" = directly bolted to the transmission's output, with no u-joints between the 2 gear boxes, just splined shafts between.
i wake up to a notification to see this monster become more and more of a god damn demon good work man can't wait to see that diesel come to life man 🖒🖒🖒
Thanks! Me too :)
LOL That victory pose after the engine sat in the bay. 10/10
It was a moment I was really looking forward to... \o/
That's always the best, that first time you let the cherry picker down and the engine is sitting. Birth of a new child... err car. Same thing.
Right! And there were a few moments when it was wicked cold where I thought about cutting corners to get there faster, but happy I didn't now :)
Just a little marketing idea for you. I have searched several times for 4BT or cummins conversion and swaps and have never seen your videos come up. Luckily youtube recommended your video separately. Maybe others are searching specifically for "4bt/cummins conversion" or 4bt/cummins swap"
Awesome. Chunky beef.
I've been getting a kick out of most every person, who's fabrication skills I respect, has seen the work in various stages & said: "Huh... kinda overbuilt... but that's how I'd do it."
So close I can’t wait to se her run .your machine skills beats the hell out me
I can just about use a hammer and a angle grinder on good day
I have a friend to thank for the machining talents! Dude knows his stuff, & has people around him who have forgotten more than I've ever learned about machining hahaha
Subscribed! This is an awesome series
Sam Roy Thanks, more on the way here shortly!
Dude, super cool! i never realized that there is an adapter shaft sitting on the back of the 4hp22's.. are you going to beef up the mounting for the transfer case? considering the transfer is a separate entity to the engine it could twist in funny ways
Same here! I thought I was being had when the bolt came out easy but the shaft had a little sticktion to it before popping out. Oh yeah the trans & transfer will both get upgrades in their mountings, especially seeing as both only had a single mount point each from stock.
woow!!
Sweet! Looking good .. is the hood going to close? lol
Nope... haha! Figured right from the start I'd be adding a cowl or getting creative with a bump of some sort in the hood, what with these B-series cummins engines being rather tall.
Awsome!
what yoke did you use? I thought it was the u1604 but the hole looks to be to big in diameter .
You got it, that's the U1604 meant for the 35-spline Ford9 w/1350's. The other yoke earlier in the video was a cast steel 29-spline that I didn't end up using.
Does the spud shaft have a bearing supporting it in front ( just wondering)
TheDieselmb Yep it's fully supported in there, and I want to do a full rebuild on one of the LT230 cases I have for this build, so hopefully I can get into detail of the internals before too long.
awwwwww shit no more #19 dammit i watched every one of these 4bt videos of yours, I really want to do this 4bt in my jeep my gas milage sucks and motor won't last a hell of a lot longer
ChrisLawley Working on #19! Transfer case divorcing, mounting, all that stuff :)
Awesome, i'm really thinking I'd like to do this in my jeep TJ, I think the later models I read produced 170 horse power which would be awesome to have in it. It all comes down to what I can find I'm sure
Very nice conversion. I really like the options once the transfer case is divorced. So many combos of different makes and model gearboxes or transfer cases. What was the main reason for doing so in this build, as the length gained was minimal and you seem to be using compatible box and trans? How have you mounted the two together? Boxed housing around the uni joint?
Oh and very nice uni joint machining and welds. Could be one of the strongest parts of the drive train.
Just found the reason for divorced transfer case in previous video comments. The mixed brand/make parts.
Thanks! Had the guidance & handiwork of a talented friend for that. Took more than a few hours of pondering, figuring, & measuring to form the plan to run a hybrid Chevy/Dodge 2WD transmission with the spud shaft linking the transfer case. My only fear is the possible transfer case internals getting stressed caused by increasing torque output from the 4BT as I inevitably modify it in the future...
You do anymore hp mods yet? What hp and torque ya think its at? Im going from 6bt 350hp to 400hp range strapped to 6 speed allison 2 wheel drive trans then i need a custom spud shaft to the np205 transfer case but nervous about it holding the horsepower and torque also being a crew cab f350 4x4 with 35in tires. Your thoughts you think it would hold up??
I have not yet, and it should be in the 225-250hp / 550-600tq range with this combination of parts/mods. Next upgrades will be injectors & head studs, so that I can bleed boost reference from the turbo's wastegate to allow it to push past the current 28psi limit. This will get me in the 300-350hp range, which is where I imagine I will stop pushing. Any more and compound turbos are likely necessary to keep it fun and useful to drive.
What are you thinking for the hood?
A big hole! Actually I'm thinking either a cowl I can attach to the hood that'll give me the clearance, or try another manifold that brings that turbo down a bit.
Tinker that was my first thought. It looks way up there
Oh yeah, the 4BT is no shorty, even more so when you try & run a 6BT sized turbo & intake horn. A cowl would lend a hand to cooling & maybe look pretty cool. And I might even try & build my own log manifold to put the turbo right where I want it, we'll see.
I like the idea ... how to mount the gearbox ?
Looks like I'll be able to use the old brackets on the frame to build my own crossmember off from, might even be able to use the old rubber isolators!
Cool ! Will you be doing .a video about custom rear panel ? I've been struggling for a while !
Rear panel...?
The interior panel of the rear door :)
Oh! Should've known that's what you meant... but yeah I could do something on that. Was a quick mod & gets utilized just about every time I'm out with it. Have to make use of every spare bit of space in that truck!
I'd truly love to see how you did yours. I've lost the original one and I can't find proper templates to do mine decently !
I like the idea of doing a video on that. I could measure it out & link a drawing for cutting the wood back-panel & stainless-steel worksurface to match mine.
How many horses has this engine?
garage and road Should be just over 200 with the modifications I've made, but also with 500-600 torque output, at VERY low rpm!
4BT's easily do 200HP/450TQ @ 1800 RPM with just some simple mods to the injection pump and a good turbo. Doing some nice work Tinker, I've got a white Disco and I'd love to drop a 4BT in it.
It looks like the motor (or at least the turbo) is sitting higher than the hood line? Does it fit below the hood?
Tim Hecklinski It is! The valve covers will be quite close anyway (due to the tall stature of these old Cummins engines & the solid axle right below it) so the plan all along was to fit a cowl to the hood. Maybe if the valve covers clear but the turbo doesn't then I may just run a little bump like you'd see in the old DSM cars. It is handy having all the clearance on the passenger side for intake & downpipe, but I may still do something different for an exhaust manifold to bring the turbo down a bit further yet.
this spud shaft is still alive?
Yep! We'll see how much longer after I put on even bigger tires & add more boost 😎
@@Tinker1837 which tyres you have use till now?
@@Tinker1837 hi i've some question to do about this work how can i contact you?
high, I am looking into doing this on my 2003 land rover discovery. is the other half of the yoke stock on the nv4500 transmission or did that have to be fabbed as well.
Not sure I understand... all the parts I used were described in the video.
@@Tinker1837 I realize now that the nv4500 is the HD model with the break which has a yoke built in. thank you for the reply.
What welding rod did you use?
I forget, but I'll ask my friend who helped make it happen!
Not “tbag”missing the classical music
Was going to chuck some music in there, but I thought the audio turned out great with all the machining & metal clanking around.
why convert it from a auto to manual??
More simple, which is one of the main themes of the whole build.
Eu achando que só eu era asim kkkk
:)