yanmar, kubota, anyone?

[Pogue]

Has anyone tried non-automotive diesels? I tried a search, couldn't come up with anything, but yanmar, doosan, etc. (a lot of generator manufacturers) all make several engines that would fit in almost any FJ40-100. Everything from a 1 cyl. to V-16 From what I understand, most can be ordered to mount up to any SAE or metric bell housing and they all come with alternators already mounted. Is this incorrect or too much fab work? Just a thought as a fella I used to work with is a generator guy, (mainly onan), and I was going to see what was laying around his shop. I thought about going with a cummins but a brand new yanmar 4-6 cyl. turbo can be had pretty cheap. This will be going into an 80 so I have room to play but my thought was I could mount one of these in, fab an adapter flex plate if needed and keep all toyota guts the rest of the way back. how far off base is all of this?
thanks

 

[inkpot]

Howdy! Most industrial engines are designed to run at a constant speed under load. Not much use on the road or trail. John

 

[Pogue]

1800 rpm's is the norm that I have seen. New rings and a few other little things is all it takes I think. We built a 1.1 liter 3 cyl. Kubota motorcycle in a 1974 bmw R75 frame last year, fabbed a belt drive v-pulley CVT and never did any internal work at all to the motor and as far as I know it's still truckin along at 54 mph. Didn't think about the added strain of trail use though, good point. If I could build it to be variable throttle for very little money, do you think it would be a worthwhile endeavor? Personal preference keeps me away from ISUZU and I bet rebuilding a Yanmar could be done for a lot less than the base price of a used Cummins. still crazy?

 

[inkpot]

1800 rpm's is the norm that I have seen. New rings and a few other little things is all it takes I think. We built a 1.1 liter 3 cyl. Kubota motorcycle in a 1974 bmw R75 frame last year, fabbed a belt drive v-pulley CVT and never did any internal work at all to the motor and as far as I know it's still truckin along at 54 mph. Didn't think about the added strain of trail use though, good point. If I could build it to be variable throttle for very little money, do you think it would be a worthwhile endeavor? Personal preference keeps me away from ISUZU and I bet rebuilding a Yanmar could be done for a lot less than the base price of a used Cummins. still crazy?

The cam and fuel system are designed to run at that loaded rpm. Even if you figure out how to vary the throttle, It will not run well at 800 rpm to pull away from a stop, and it will come apart if you try to run it very long at 3000 rpm so you can get your rig up to speed. With a very limited rpm range, you will need 12 - 18 forward gears to run thru like an 18-wheeler to get it going. Try a 6.2 or 6.5 Detroit deisel from a late 80's to early 90's chevy truck. They bolt up to the same transmissions as any chevy small block gasser. Much more realistic. John

 

[roscoFJ73]

Someone mentioned the Onan 6 cyl diesel as a good diesel swap for a landcruiser. It was supposed to be a replacement for a chev 6 ,so it should fit into a cruiser engine bay quite nicely.

 

[RHINO]

the ONAN 6 cyl is also known as the cummins 6AT. good swap but no longer made and parts will be harder more $$ to get.

as for non auto diesels,, lots of good ones out there but just the IP swap expense is enough to put off most swappers.

 

[Tapage]

My only experience with Yanmar it's from a boat .. the rpm range come from 0 - 3000 rpm and 100 rpm make the hole diference.

This engine it's a 6 banger and it's huge and heavy, designed to be water cooled ( sea for sure ) boosting around 10 PSI ...

 

[Pogue]

So you're probably going to tell me that there's no Santa either, right?
Seriously, all help is appreciated simply because I will go a long way off track on something like this only to find out it's not going to work. This came about because I built my welder with a Yanmar mated ot a Marathon gen/welder and it came in just barely over half the price of a Bobcat. Performance was just as good in my opinion. Maybe some of the Chinese stuff? I know most of it doesn't meet any EPA requirements but that can be dealt with fairly easily in west TX. Any thoughts on this?