Off-Road Ranger I
And it's potential with inexpensive mods is like nothing I've wrenched on before :D Getting it to triple the torque just off idle PLUS triple the fuel range... woah. I can only imagine, & looking forward to putting everything to the test!
Enthusiast I
Off-Road Ranger I
Thanks!
I forgot I didn't go into all the fine detail in this thread, so if anyone's looking for way more in-depth information on my 4-cylinder Cummins build specifically, then check out this thread here >>> www.4btswaps.com/threads/100657/
But thankfully it wasn't a real runaway since the governor still cut the fuel up at the top of the RPM range... could've been ugly if it didn't!
So the failure was a broken "fulcrum lever" which is the connection between the external throttle lever & the internal fueling / governor controls:
It's something I've been told by a lot of experts is uncommon to fail... bad luck, but went about as good as it could have since I was also informed that the failure usually ends in the pump housings exploding. The governor's flyweights smacked that broken piece of the lever, which could've been fixed, but I didn't feel it was worth the risk given how critical that assembly is to controlling the RPM. Notice the springs bent at a wild angle here, they're meant to be straight up & perpendicular to the shaft from this view:
It was super lucky that during all this quarantine stuff that I was able to source the parts from a local diesel pump shop so quickly & only cost me ~$300. These same parts new from Bosch were ~$1000 with weeks waiting, & a whole new pump is +$3000. Here are all the brand new used parts I put back in to get it running a few days later:
Was a bummer, but I learned SO MUCH about how a mechanical injection pump works!
Enthusiast I
Kudos for tackling that yourself! There's all sorts of mechanical witchcraft spinning around inside of pumps lol
So pump fix and extended test drive vid next?
So pump fix and extended test drive vid next?
Member III
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- Jim
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I don't now how you knew where to look for the problem. It's pretty obvious once you opened that thing up. Thumbs up for your mechanical abilities on all this project.Thanks!
I forgot I didn't go into all the fine detail in this thread, so if anyone's looking for way more in-depth information on my 4-cylinder Cummins build specifically, then check out this thread here >>> www.4btswaps.com/threads/100657/
But thankfully it wasn't a real runaway since the governor still cut the fuel up at the top of the RPM range... could've been ugly if it didn't!
So the failure was a broken "fulcrum lever" which is the connection between the external throttle lever & the internal fueling / governor controls:
It's something I've been told by a lot of experts is uncommon to fail... bad luck, but went about as good as it could have since I was also informed that the failure usually ends in the pump housings exploding. The governor's flyweights smacked that broken piece of the lever, which could've been fixed, but I didn't feel it was worth the risk given how critical that assembly is to controlling the RPM. Notice the springs bent at a wild angle here, they're meant to be straight up & perpendicular to the shaft from this view:
It was super lucky that during all this quarantine stuff that I was able to source the parts from a local diesel pump shop so quickly & only cost me ~$300. These same parts new from Bosch were ~$1000 with weeks waiting, & a whole new pump is +$3000. Here are all the brand new used parts I put back in to get it running a few days later:
Was a bummer, but I learned SO MUCH about how a mechanical injection pump works!
Off-Road Ranger I
There sure is! Anyone watching me from a distance could've easily guessed I was disarming a bomb based on my body language when I started into that governor housing
I ended up having to make a few special tools to get all the way thru the disassembly, but it was either make it now or wait, so I made myself a T30 offset "wrench" for the difficult to reach bolt between the pump body + engine block, & a slotted socket for the governor flyweight nut:
Yes! The pump repair & much more driving footage will be next up :)
Enthusiast I
Member III
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Love seeing all the cardboard templets laying on the floor. LOL
Looks like a really nice build you have going. If I were your neighbor I would be right in the middle helping you !
I have an'04 dll i just installed a 4.6 top hat lined from Atlantic British. easy install and should last a very long time. Love my disco
Enthusiast I
Haha those aren't cardboard, they are a steel mount kit I got but didnt like so designed my own :)
I keep putting my progress on the Cummins Land Rover Group on facebook (Cummins Land Rover Group), come join and follow all sorts of builds on there (save interrupting Tinkers thread)
Off-Road Ranger I
Awesome :D That looks like some proper work you have going there! Sounds like my kinda group too, going to have a look for sure.
Enthusiast I
We have been following your progress on the group, your videos have featured a few times!
Plenty of technical discussion on there but best having a thick skin and open mind at times, some things come across more abrupt than intended
Off-Road Ranger I
We have been following your progress on the group, your videos have featured a few times!
Plenty of technical discussion on there but best having a thick skin and open mind at times, some things come across more abrupt than intended
It's important to have a good balance of technical talk & sh*t talk
Finally putting some miles on the swap!
Taking it easy on it for now, especially after the last run got a bit out of control, & just until I get a few more gauges installed (Tacho, EGT, Boost etc)
Influencer I
Haaaaa, that sound!!!!!
How fast were you going? Is the gearing OK? For sure EGT. That is what I drive by.
Congrats mate!!!
How fast were you going? Is the gearing OK? For sure EGT. That is what I drive by.
Congrats mate!!!
Off-Road Ranger I
The sounds coming out of this thing now make it super hard to not look like a doofus with a huge grin pasted on everywhere I've been driving it haha!
Yeah, gearing seems right on point up to about 60mph so far. I was taking it REAL easy on it (and honestly kinda shifting like crap, because diesel noob) since I was nervous the "sticky throttle" issue might rear it's ugly head at any moment. Took an hour of smooth running before I relaxed & started to push it a bit more. I'm holding off on really hammering on it, or testing highway speeds, at least until I get the EGT + Boost + Speedo gauges installed so I can monitor + tune more carefully. Until then I'm sticking with sunday drive mode, especially with how conspicuous the rig looks & hearing about people a few towns over getting harassed for "non essential" driving.
Nothing to see here officer.... just taking my tractor a field over to sling fertilizer.... play it cool!
Influencer I
The sounds coming out of this thing now make it super hard to not look like a doofus with a huge grin pasted on everywhere I've been driving it haha!
Yeah, gearing seems right on point up to about 60mph so far. I was taking it REAL easy on it (and honestly kinda shifting like crap, because diesel noob) since I was nervous the "sticky throttle" issue might rear it's ugly head at any moment. Took an hour of smooth running before I relaxed & started to push it a bit more. I'm holding off on really hammering on it, or testing highway speeds, at least until I get the EGT + Boost + Speedo gauges installed so I can monitor + tune more carefully. Until then I'm sticking with sunday drive mode, especially with how conspicuous the rig looks & hearing about people a few towns over getting harassed for "non essential" driving.
Nothing to see here officer.... just taking my tractor a field over to sling fertilizer.... play it cool!
Tinker hi,
I meant to ask you. Most people are interested in cost of a project like this. I ran a tab while I was building the Landcruiser and posted everything in my blog. The drivetrain was expensive but because of the nature of the project, Toyota diesel parts are mostly OEM or Australian aftermarket so freight added to cost. I get notes all the time on the rig with people wanting to buy the car. I say labor is about $250000, parts are free. But, seriously would be interesting to see the cost when the project is done.
Cheers and keep inspiring us.
Off-Road Ranger I
My original plan way back was to just toss the grubby 4BT in & mate it to my automatic... but when I decided to go whole hog on the build is when I started to track costs. I originally planned for $5,000 to just get the dirty stock 4BT in there, so after some number crunching I updated the budget plan for $10,000 to refresh the engine, add a manual trans, upgrade turbo, re-do all electrics, & upgrade every supporting system that made sense with the upgrades. So far I've found I was pretty close in my estimates, because I made a few deals here 'n there, but also made a few costly mistakes/had unforeseen issues, so a lot of the budgeting balanced out in the end. I have a few more relatively inexpensive mods to add, head studs + injectors, but for the most part everything is bought & paid for at this point aside from maybe a bit more on the consumables side of things. As of typing this I'll be within a few hundred of my budget estimate if I buy anymore "hard parts". Also I don't know if it's sensible or not to include the money recouped from selling no-longer-needed Rover parts, but I have a fair bit of parting out to do now & I'm confident it's worth well north of $1,000 once I put the time into splitting everything apart.
TL;DR = My budget is $10,000 for the whole powertrain & full chassis rewire builds. All in parts + materials + consumables, since all labor was myself & friend's. All parts are purchased, & I've now nearly reached my budget cap. I have $1,000+ in unneeded Rover parts to sell though.
Member III
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This is awesome ! Cant say more other than good job fellow OB member.It's important to have a good balance of technical talk & sh*t talk
Finally putting some miles on the swap!
Taking it easy on it for now, especially after the last run got a bit out of control, & just until I get a few more gauges installed (Tacho, EGT, Boost etc)
Protector III
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Thanks for the video! Great built! Wow, the sound of this engine is awesome!
I like the self made tools!
Have fun and enjoy!
Cheers,
Bjoern
I like the self made tools!
Have fun and enjoy!
Cheers,
Bjoern
