ExpoGeorgia
Observer
Is it possible to swap in a 6bt (12v) Cummins motor and an NV4500 5 speed into a FZJ80 with a 4 inch lift? No body lift is needed correct?
Quick question about the FZJ80 and 6bt
- Thread starter ExpoGeorgia
- Start date
ExpoGeorgia
Observer
Yes I know, I have a 12v waiting to be put into something haha :sombrero: I've been looking at a couple of 4bt and 6bt swaps in these pigs and I'm worried on if there will be enough room for the intercooler along with 2 batteries. Thanks for the help though guys
freshspecbluegt
Adventurer
Here's a 6bt swap from 'mud
http://forum.ih8mud.com/hardcore-corner/84611-cummins-6bt-install-fzj80.html
There were a bunch of 4bt rigs that were sold over the last year or two. It suggests to me that perhaps people weren't real happy with the 4bt swap. I would try to hunt down some of these guys that did the swap and get an honest opinion before investing the time and money.
http://forum.ih8mud.com/hardcore-corner/84611-cummins-6bt-install-fzj80.html
There were a bunch of 4bt rigs that were sold over the last year or two. It suggests to me that perhaps people weren't real happy with the 4bt swap. I would try to hunt down some of these guys that did the swap and get an honest opinion before investing the time and money.
freshspecbluegt
Adventurer
Oh cripes, I had the thread bookmarked and had never checked out the end of it, I guess things went down hill!
ExpoGeorgia
Observer
Thanks for the reply! From my thoughts the 4bt doesn't offer the power needed to haul an FJ80 loaded with gear as well as noise decible and vibration from this motor. Also the avalibility and cost of 4bt parts compared to the more common 6bt could have a play in someones decision for keeping a Cummins swapped expo vehicle.
I don't have an FJZ80 at the moment (shopping around for a 40th Anniversary model) so I don't know the demensions of the motor compartment, nor the amount of lift needed to clear the oil but I'm hoping that no body lift would be needed because I'm only looking to do 4 inches of suspension lift.
ExpoGeorgia
Observer
However I do think the 6bt is a little too heavy for the FJ80's front end and heavy duty shocks would be needed. I'm not bashing the 4bt if anyone takes offense to this thread, I just want to know if I can make use of this motor.
ExpoGeorgia
Observer
Thank you for your reply and please get some pictures whenever your are free to do so. If you have some specifics you'd like to discuss offline send me a pm and I will send you my email if needed.
the 6BT actually sort fits better than a 4BT, because of the turbo placement. On my 4BT conversion, i cut down a 6BT manifold to move the turbo forward; and thus the engine farther back. I also cut the oil pan. I then was able to get the drivetrain in with zero lift. No kidding. I did end up putting OME heavies on it.
Viggen
Just here...
Well, thats not true. As much as I dont like these swaps, there is more than enough power to pull an 80 around. To say that a loaded 80 is heavier than the step/ bread vans that these motors came out of is dumb. People sell the 4BTs all the time because they arent what they thought they would be. They are loud. They do vibrate more than anything else. They are very heavy requiring a stiff spring rate and they are super tall meaning that you will have to lift 4" to make clearance. I thought about it but after consulting with Proffits (if anyone knows anything about these swaps, its them), I decided a factory diesel was a better option. I would rather a Toyota diesel in a Toyota than a heavy diesel like this one. Quieter, smoother, meant to be there and lighter. I think the only advantage to the Cummins is that you can pick one up for cheaper than a Toyota set up. Thats it though.
ExpoGeorgia
Observer
I'd rather have the Toyota diesel installed however you have to look at the avalibility of parts that are both cheap and readily avalible.Plus as I've said I already have a 6bt for a swap. But as I said with the 6bt and 4bt, I know the 4bt can carry the weight of a fully loaded FJ80 with trailer, but how would it do in higher elevations?
I've got a VE pump as the motor came from a stock 1st gen, but I'm thinking of doing a P pump convertion. I don't have much of a need for a powerhorse (I've got the 1st gen for that lol), I'm just looking to get more fuel mileage and reliability.
Do a little bit of research before swapping out a VE pump. The VE's are known to get better millage than the P pump trucks and actually have some performance advantages (variable injection timing) at lower horsepower levels.
It may sound silly to some but a non-intercooled VE pump motor with some careful tuning (good injectors, well matched turbo, 4K RPM governor springs) would be a very very good match for a stock axled 80 series. This would not be an ultimate horsepower configuration but would be extremely driveable for how most people use a cruiser.