5.9 Cummins in an 806 gasser

[Chester5732]

Will the original radiator work?

[39farmalla]

It will work until it don't 🤣

Also did you find one or just looking

Sam

[Chester5732]

29 minutes ago, 39farmalla said:

It will work until it don't 🤣

Also did you find one or just looking

Sam

I may have found a tractor and a low hour engine. Will know in a couple weeks. 

[cumminstinkerer]

@Chester5732 Not sure of an 806 but on the 756 we did I believe we used the original gas radiator, just had to get a little hose creative, if keeping the turbo get a manifold off like a 5140 and the elbow, have to shorten fuel tank but nbd, with a little turbo housing adjustment you go out the factor exhaust hole and a little fancy pipe work you can use the original air filter int the stock location. one of the tricky parts for us was throttle and tach drive stuff, also getting th fan spaced out right was a bit touchy, think we ended up using an 1896 fan hub bracket/assembly. I can't recall where you are from, Im in central iowa, tractor is up near 
Collins Iowa and I know you would be welcome to come have a peak and do some snooping

 

[stronger800]

Buy  the tractor and motor.  Figure it out later. 

[Chester5732]

2 hours ago, stronger800 said:

Buy  the tractor and motor.  Figure it out later. 

That’s my plan.  The tractor is usable as is for now. When I have the majority of the parts bought bring it in the shop for the winter.  

 

2 hours ago, cumminstinkerer said:

@Chester5732 Not sure of an 806 but on the 756 we did I believe we used the original gas radiator, just had to get a little hose creative, if keeping the turbo get a manifold off like a 5140 and the elbow, have to shorten fuel tank but nbd, with a little turbo housing adjustment you go out the factor exhaust hole and a little fancy pipe work you can use the original air filter int the stock location. one of the tricky parts for us was throttle and tach drive stuff, also getting th fan spaced out right was a bit touchy, think we ended up using an 1896 fan hub bracket/assembly. I can't recall where you are from, Im in central iowa, tractor is up near 
Collins Iowa and I know you would be welcome to come have a peak and do some snooping

 

I’m in Michigan but may take you up on it.  

[Chester5732]

Well, I just got a text on the engine. That deal is done and it even comes surrounded by a Rogator 854. Now to get the tractor to go with it. 

[Jeff-C-IL]

OR remove boom & tank, shorten wheel legs add rear hitch....and turn that rogator into a 4wd Hydro frankentractor!

[cumminstinkerer]

@Chester5732 we are both pretty proud of how it turned out, havent got to get it painted yet but aside from that if you werent an IH guy you'd never know it was a transplant, it is currently in a non running state, best guess is the one front cover bolt came out and took out the oil pump, we never pulled the cover but that bolt is a known issue, guess we should have and put lock tite on it, now we have to split the front bolster off and pull the tin cover, replace the oil pump and that bolt. Before you put yours in take that dang bolt out thats above the oil pump and red locktite it. Is the engine you are getting an inline or rotary pump engine?

[Chester5732]

54 minutes ago, cumminstinkerer said:

@Chester5732 we are both pretty proud of how it turned out, havent got to get it painted yet but aside from that if you werent an IH guy you'd never know it was a transplant, it is currently in a non running state, best guess is the one front cover bolt came out and took out the oil pump, we never pulled the cover but that bolt is a known issue, guess we should have and put lock tite on it, now we have to split the front bolster off and pull the tin cover, replace the oil pump and that bolt. Before you put yours in take that dang bolt out thats above the oil pump and red locktite it. Is the engine you are getting an inline or rotary pump engine?

It is an inline. Built in 1996. Not sure the year of the machine itself. 

[cumminstinkerer]

@Chester5732 I would for sure do that bolt as well as do something with the dowel pin up above the cam gear, aka the killer dowel pin, for some reason we never had issues with the dowel with a lucas pump or the VE bosch pumps, never had an A series bosch one fall out either, Have only seen it in with the P series pumps, but why take a chance since you're gonna be in there anyway. The one we did had the bosch VE rotary pump on it so I can't say how the injection lines will fit with the hood, might be a bit tight. depending on the intake top plate a guy might want to get one so you can install the gird heater from a 24 valve dodge pickup on it, sure makes for nice starting in cold weather. I actually have a guy that has the pattern to cut out the top plate to do that but you may need to get the air horn piece for the intake off a different machine to be able to do that, I ain't sure what setup tthey used in the rogators, worst case a guy could fab up the airhorn to make it work with a grid heater

[HydroTek]

Hit the dowel pin hole in the cover with a hammer and "stake" the hole so the dowel cant come out -- that pin is below flush in that hole -- should have been done from the factory anyways 

[cumminstinkerer]

2 hours ago, HydroTek said:

Hit the dowel pin hole in the cover with a hammer and "stake" the hole so the dowel cant come out -- that pin is below flush in that hole -- should have been done from the factory anyways 

Lone I did for the second time, after staking and sleeve retainer loctite, it came out again and caused a huge mess, I tacked a rod to the end of the dowel, got the cover all on and torqued then pulled the dowel, have had zero issues since, this one is a P pump with the lower support bracket so not like the dowel does really anything but ease of installation in this case. I can see the need for it where the cover is carrying the entire pump for sure. I honestly thought the staking and the sleeve retainer would do it it but nope! That one dange bolt above the oil is almost as bad, I've seen everything from some missing teeth on the oil pump gears to the pump housing being split all but in two!

[HydroTek]

Seen where the truck guys have made a bracket to cover the dowel hole -- keeps the pin from escaping

Dunno, I always loc-tite the bolts holding the housing to the block and hammer the dowel hole in the aluminum so it cant come out  

Really would never been a problem if they had not made the hole drilled all the way thru 

that back gasket is a pain to put in -- I don't intend to get back in an engine 

[supermechanic]

19 hours ago, Chester5732 said:

Rogator 854.

Them Rogators look handy. I think I would hire myself out if I had one.

[Matt Kirsch]

Where do you get the adapter plate anymore? Leaman's seems to have fallen off the face of the earth.

[Chester5732]

3 minutes ago, Matt Kirsch said:

Where do you get the adapter plate anymore? Leaman's seems to have fallen off the face of the earth.

Atlas tractor in Minnesota. 

[cumminstinkerer]

On 8/28/2026 at 3:58 PM, HydroTek said:

Seen where the truck guys have made a bracket to cover the dowel hole -- keeps the pin from escaping

Dunno, I always loc-tite the bolts holding the housing to the block and hammer the dowel hole in the aluminum so it cant come out  

Really would never been a problem if they had not made the hole drilled all the way thru 

that back gasket is a pain to put in -- I don't intend to get back in an engine 

Before I left Case in 2008 they came out with a bulletin that said not to use a gasket, they had some fancy sealant you were supposed to use, shortly after the bulletin got revised to say that Permatex Ultra-Grey was the new preferred sealant. Have not had one bother that I have done that way, but then I've also never had the dowel fall out of any other than a P-pump one. I agree the hole should have never been a through hole either. I absolutely hate doing that gasket behind the actual case, it really sucks having to pull the cam, bad enough in a backhoe or skidloader but way worse in a pickup. I tried once pulling the gear and leaving the cam in on an 8.3 ( same basic design) that was a very bad fail, in getting the gear back on the cam bumped the rear plug and caused it to leak, that one was in a dozer, engine then got to come out and get the plug done, that sucked!  

[HydroTek]

Yeah , I hold the lifters up and pull the cam 

Been using the Kubota gray sealant on those -- seems to hold up well

yeah no gasket -- same for the front tin cover 

[cumminstinkerer]

same here @HydroTek other than either ultra grey or honda bond if I have some. only ever had one lifter come out, it was in a pickup and luckily it was number one, my hands are fairly small and I got it fished out of the pan and back up in place, albeit with some colorful words! I was trying to be sneaky on that 8.3 and with no side cover it makes it more fun on them, I am not a fan of the wood dowel method and didn't have enough long magnets, learned my lesson there for sure!

[HydroTek]

Have you used the 1/2 piece of PVC pipe to get lifters out ?
-- string and a magnet to get the lifter back in 

yeah wood dowels and rubber bands 
tho Neo magnets on the end of the dowel would def be an improvement 

I use the Kubota gray -- it is "better" than ultra 

Honda bond should also be good -- 3-Bond makes that stuff I think 
lol , knock off of 3M products -- I have used their gray stuff a few times -- it works good 

[cumminstinkerer]

I've never tried the PVC setup, and was just so upset at dropping that one I didn't even think just reached in and poked it back in on the first try, would nere work again! I'd sure like to know why if that dang cover leaks its always right below the injection pump and above the accessory drive opening, that is literally the only place I have ever seen one leak unless the dowel came out and made a non factory installed inspection port. All in all they B engine is a great family of engines and really pretty tough like any engine they had little issues but as time went on most of them got fixed prior to leaving the factory, the dowel not so much, I personally have two generations in pickups, have two more I take care of my dad and uncle in pickups, then we have an 1845c that had a 4BTA transplanted into before we got it, talk about over powered its like 90 hp, LOL.

[acem]

So you say the VE pumps don't loose the dowel pin?

I have several of those engines in trucks and have never lost one.

[Gearclash]

1 hour ago, acem said:

So you say the VE pumps don't loose the dowel pin?

I have several of those engines in trucks and have never lost one.

Mainly it seems it was the P pump and the VP-44 5.9s that would have dowel pins or front gearcase bolts go AWOL.  Can't say I've heard of it with any regularity on other versions of the 5.9.  

[cumminstinkerer]

I cant say as I've ever seen a VP44E lose one either, but never have an A series, VE series, or the old CAV/Lucas lose one, it must have to do with weight of the pump and vibration frequency, I really cant say, not an engineer but that has been my findings. I didn't deal with a lot of VP44E when I was at Case the excavators were the only thing we had with them on there, changed several injections pump and lift pumps, main cause of injection pump failure, but never had a dowel exit the party. we never had anything with a Pseries pump either but I have worked on enough pickups that had issues. I had to change a few VP pumps on pickups too but never had one spit the dowel. That bolt up above the oil pump in the cover was more of an issue than anything, after replacing the oil pump and loctiting the bolt never had one ever bother.