New to me HD11B

I would investigate what is wrong with engine first. Could be something simple. JMHO, Tracy

Tim....So the serial number being 799...should be the first year of production 1955. It would have come with a Lonova style engine at that time...the 685T became the last version made. So ...yes JC and Tracy have good ideas where to look.   As I always like to say....post some pictures....engine pictures will help identify exactly what you have....the more pictures the better.

Not a 1980's model 685-T for sure !!!!    Non-turbo 1950's engine is what I see.

Unfortunately no one is making engine parts for these anymore.  I bit of know-how and luck will be required to find parts on someone's shelf.

definitely worth the price but the engine and undercarriage condition will be the determining factors.

I am up for anything really I do like the idea of a Detroit in there I have a 2-53 I believe in another JD crawler loader and that thing runs great. Just will have to find one I guess I may even just machine my own parts for this motor if I have to.  

That sounds nice. How much HP can I throw at the transmission and clutches before I break stuff?

Probably not as much power as AC put through them later with the turbo'd engines.

My 11B tractor was rated at 140hp but according to my buddy at the fuel shop, fuel delivery is increased by 15% over stock settings. Mine is power shift however.

Thanks for all the information. The pictures of the Dozer are at the property I bought it from. I don't have it picked up yet going out in 2 weeks to get it. If I am unable to get parts for the motor I will probably get a 4-71 Detroit though the 6v-71 is tempting.

would 11B have the early 1/2 bolts on the intermediate pinion cap?  they were a weak point and eventually upgraded to 5/8, so power level considered here.    keep in mind the v series will be more expensive than a 4-71 .  they only ran about 1700 rpm, and a 4-71 will fit easier and definately be cheaper.  I mean you can do whatever you want, i just feel the less complicated the swap is, the more likely it is to be a finished success, and thats what we want is another machine to keep on living.

Edited by CAL(KS) - 08 Aug 2022 at 7:19am

YES THE 471 IS BEST CHOICE I ONLY USED THE 671 BECAUSE I HAD IT AND NEW IT WAS A GOOD ENGINE. ALSO MORE WORK GETTING THE 671 IN THERE.

take measurements on the yokes.  measure bore for joint caps and width across to match it up.  

are you sure it is the final drives stuck and not either the tracks locked up, or the engine stuck with the transmission in a gear?

In the photo the Right Brake was ALL the way depressed as if the Parking Brake was applied, did you release that?  And lock back BOTH Steering clutches???