Have you driven a breadvan with a 4bt? (Because they're f'ing awful!)
Have you driven an 80 with a 12 valve? (Because they're incredible!)
Any Cummins R2.8L diesel repowers? (3 Viewers)
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Have you driven a breadvan with a 4bt? (Because they're f'ing awful!)
Have you driven an 80 with a 12 valve? (Because they're incredible!)
FJBen
SILVER Star
Yes. That’s why I said the 4bt belongs in a breadvan.
Not an 80 with a 12v, but I owned a 12v single cab and grew up with 12v and 24v driving from my parents. I’ve talked with a couple of people with 6BTs in 80s firsthand and they didn’t like them. Sold them.
I don’t doubt it’s good in there and it’s not my money, but the Toyotas are designed to go into an 80 and can be built up nicely and reliably. The 6BT swap is just the same as an LS in terms of what you need to do to get it in there.
Good posts in this thread. Didn't consider parts in the US for the 1HD-FTE but it makes sense. Bummer, sounds like the best option. 12V would be ok but sorry, I'm buying that it's only 950 fully built minus trans. 1100, yeah. Either way, too much. Not sure if the OM606 would be a good match either as it's hard to get in the US, parts probably the same. So time for a LS, rebuild the 4.5 or find a Duramax 6.6. Maybe I'll pull the LLY out of my 2005 3500 with 40,000 miles, it's just sitting in the shop out of the sun waiting for me to return. Scratch pulling my LLY. Wonder what a Duramax is pulling for price? Ok, LS or rework the 4.5. Guess that'll have to do.
Curious, I've heard plenty of cruiser owners hating the 4BT swaps. They will shake your teeth out. I totally get that.
But everyone i've ever talked to with a 6BT swap loves them....
Multiple videos showing 12 valve weighs around 950. I have crane scales and floor scales. I can do one too if needed.
My 97 gained 200 lbs going from stock 1fz to a 97 12 valve.
Agreed. They are a popular swap. There are hundreds of completed 5.9 Cummins 80 swaps. Half a dozen within an hour of where I live. I know two different guys who each have two of them.
One of those guys built one and his wife took it from him and sold her new 600hp Range Rover SVR. So he built a second for himself.
I know a guy with a collection of supercars. His favorite vehicle to drive and the one he drives all the time is a 12 valve 80 series. He says it's not the fastest, but it's the funnest to drive because it just shouldn't be as fast as it is when you lay into it.
FJBen
SILVER Star
So I’ve guess we’ve found out on a forum, everyone has different opinions 
That said I would be amazed if there are 100s of 6BT swapped 80s. Granted I’ve not been researching or in the swap game but that seems high.
Rebuilding a 1fz will be cheaper than a 6BT swap, or any swap unless you have a free donor truck and do all fab work yourself.
That said I would be amazed if there are 100s of 6BT swapped 80s. Granted I’ve not been researching or in the swap game but that seems high.
Rebuilding a 1fz will be cheaper than a 6BT swap, or any swap unless you have a free donor truck and do all fab work yourself.
Maybe you rarely see them for sale, believing that indicates a small number when in actuality there's just a lot of satisfied owners?
I swear I thought this guy was at 500kg. Glad you mentioned it and I went back and found his video. So I guess I have to back off, eat a plate of crow and reconsider this. Wonder if I was thinking ISB. Ok, he said he thinks they pulled 100kg off the engine and then weighed it. It was his comment on wiki stating 499kg was maybe what I was going with but the scale clearly shows 410kg. Now I have to wonder what the total install weight would be like with a 6L90 trans installed compared to the stock engine and trans. Sure it's heavier than the Toyota 1HD-FTE but 200 lbs less than what I was thinking. Now I need to search Cummins to 6L90 adapters which I think I've seen before. And look at final gear ratios to keep in the 2000rpm range at 80 mph with 35's. Think there was a comment made on Facebook where the 4.10s worked better than going to 4.88's. Maybe just do the 3.1:1 TC mod and call it a day. Thanks for clarifying this. 18:58 minutes to get to the weight.
FJBen
SILVER Star
Whatever semantics. I’m just saying I would think you would see a whole lot more if the numbers are in the 100s regardless because f them being happy with it. There aren’t that many 80s for sale in relation to normal cars.
How many on mud? 20? 30? So that means 200 or more are in the wild not on mud?
Either way they work and are an option. I just said in my opinion, if I had to choose, my and only my decision I wouldn’t put a 6BT in, if I could choose what I wanted for just my rig.
Cummins 4BT 6BT Engine 6L80E/6L90E Transmission 6 Speed Conversion Kit. - Zero Gravity Performance
These Cummins kit lets you get the transmission functioning behind the Cummins 4BT and 6BT engine if you use the engine adpater kit
www.zerogravityperformance.com
You know, I read your reply wrong. I read "I doubt they're good" when you actually said "I don't doubt they're good".
I will work on my reading comprehension lol!
I'm picky about how things work. I like a Cummins in an 80 a lot. But that said, it does need to be done to a reasonable standard. You can cut corners or pay a bunch of money to a clueless shop and get trash. It is definitely possible to have a poor result with a 5.9 in an 80 series. I'm working on dialing in the recipes for stick and auto 5.9 or even 6.7 80 series swaps and I hope you will get a chance to ride in one in the future and form your own first hand opinion.
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We have installed 5 of these in misc transmission and tcase configurations. CUMMINS SUCKS BALLS FOR SUPPORT AND WARRANTY and I refuse to install another.
JEEP OWNERS CAN HAVE THIS TRASH!
RUN LIKE YOU ARE ON FIRE.
JEEP OWNERS CAN HAVE THIS TRASH!
RUN LIKE YOU ARE ON FIRE.
Why would you be breaking down with a Toyota diesel? Good engines run until they wear out and you can see that happening with plenty of warning.
In decades of diesel ownership the only problems I've ever had on the road have been electrical and hoses.
The toyota axles get upgraded for 4wd work with standard engines. If you want to install more torque and weight you're going to have more problems. Unless you never use the torque.
The problem with a cummins 6bt conversion isn't the "cummins 6bt" part. It's the "conversion" part. The standard of work varies from excellent to awful. But never reaches factory engineered levels.
You have a random collection of parts which you'll never keep track of without spreadsheets for spares. If someone with a conversion rocks in for some routine work you may spend hours trying to find out what that hose, fan or engine mount was originally from.
Unless everything has been incredibly well thought out you're going to have an endless run of teething issues ranging from leaks and hoses/belts/wires that won't stay put to chafe-through, breakages and stuff that is forever wrong because it everything would need to be custom to make it fit properly but wasn't due to time/cost reasons.
I've been there myself and I've helped mates through similar things. Even buying a vehicle which has had brake upgrades. WTF are these and where do we buy new rotors/pads? Everything becomes a research project.
The only work a good engine needs in it's lifetime is filters, oil, belts and hoses. None of that is diesel shop maintenance or even past home driveway work.
A crap engine. Yes you're going to forever need parts.
What do all the diesel mechanic shops do then? How do they stay in business?
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OK, I'll bite. Who and Where are the good shops doing Cummins 5.9L and transmission repowers? What sort of ballpark price do they charge assuming the engine and transmission are provided?
I'll also state that I don't want a $100K Series 80 diesel either. Cost has to be reasonable, not cheap though. Secondly, where are the good sources for the engine and transmission ready to install and what should one expect to pay? I'm not talking about a $ 1,500 pull from a salvage yard and $3K worth of parts installed by a plumber but, a reputable remanufacture or low-time pull from a totaled vehicle.
So far, my Googling has proven pretty useless for this sort of repower. While I think the R2.8 motor is a good option for many vehicles, the arguments here for the 5.9L Cummins has me swaying that direction. The Toyota diesels are not really where I want to go either.
I'll also state that I don't want a $100K Series 80 diesel either. Cost has to be reasonable, not cheap though. Secondly, where are the good sources for the engine and transmission ready to install and what should one expect to pay? I'm not talking about a $ 1,500 pull from a salvage yard and $3K worth of parts installed by a plumber but, a reputable remanufacture or low-time pull from a totaled vehicle.
So far, my Googling has proven pretty useless for this sort of repower. While I think the R2.8 motor is a good option for many vehicles, the arguments here for the 5.9L Cummins has me swaying that direction. The Toyota diesels are not really where I want to go either.
There are plenty of posters against a Cummmins 5.9 swap but no one has posted as many positive ideas about any other single diesel to swap into an 80. The LS doesn’t count in this thread as it began with questions about a toy engine that burns diesel fuel.
I’m a huge fan of the 5.9 and have been schooled further in this thread about why it’s a great choice for a diesel swap.
No one has posted a better answer other than simply sticking with a Toyota diesel which will have to work considerably harder to keep up with the larger displacement industrial 5.9. Support is a huge factor.
I’m a huge fan of the 5.9 and have been schooled further in this thread about why it’s a great choice for a diesel swap.
No one has posted a better answer other than simply sticking with a Toyota diesel which will have to work considerably harder to keep up with the larger displacement industrial 5.9. Support is a huge factor.
Proffits Cruisers would be my first choice if you want a shop to do it.
They have Cummins swaps down pat.
They most likely invented them in the US market. Jeremiah and his team have been doing Cummins swaps easily for 20 years.
If you spend any time on diesel forums or around the diesel community you’ll hear:
“the doge ram is just another shipping container for a cummins”
There’s really not another diesel platform in the half ton/full ton space that is as widely loved as the 6BT. Huge power potential, huge aftermarket support, incredibly reliable.
