got the 371 home today

[dgdrls]

Let'er Rip!! 

[eastberkshirecustoms]

The ol' man tells me that back in the day, the Navy used 90mm injectors in the 71 series and ran them at 2500-2600 rpm in landing craft. That would be something to get a hold of- some surplus 90's and let the smoke fly!

[sandhills]

I don't have a 3-71 but do have a semi that has a 318 detroit, I don't shift until around 2k, and you have to be on top of downshifting or you're backing down the hill for another run at it  .  Those old detroits do scream, but compare the 2 stroke to a 4 stroke, just the way they were built.  (P.S. buy oil  )

[bandmiller2]

Those 71 series Detroits are quite an engine but have no bottom end and as sandyhills says you got to keep them wound up.Larger injectors help to a point then your dumping more fuel than you can burn with the available air.In my youth I worked in a fleet shop,it was my job on the third shift to make geldings out of the new highway tractors. They came with 65's I'd pull them and put in 55's.Often I'd hear the drivers say jeeze  when I picked up the new truck it seemed to have more power. Frank C.

[swampbuggy]

I loved the 71 and the 53 series engines. We got them from Gray Marine and many times had to swap them from left to right hand engines. I rebuilt a pile of Rockford clutches too. NOTHING screams like a 6V53..nothing... but those 1/2/3/4 71 series engines were a lot of fun to rebuild. Oh, putting a 471 blower on my cougar really made it go too!

[Don_Papenburg]

How about injecting a little propane in with the diesel ? that makes the black smoke all but disappear and puts more power to the PTO. Should cut fuel usage also

[bandmiller2]

Swampbuggy,I've been into alot of detroits but never had to convert one to leftie,what do you do about the oil pump.?  Frank C.

[bandmiller2]

I don't think our brother Toby will have any trouble powering with the 3-71 as long as the engine doesn't have to power auxiliaries.All my milling has been with diesels around 100 hp and they will handle it,you just have to slow the feed a little in big oak. Frank C.

[swampbuggy]

Bandmiller, We converted from left to right and had to swap out many parts to do it. Crankshaft, cams, rear gear set, oil pumps etc. The oil galley plugs has to be swapped so the oil would feed the head and drain correctly. The process was to strip the engine down to the bare block, redo the oil plugs, and go back with the correct rt hand parts. Fortunately, we has shelves of the stuff so you did a lot of rummaging around. Ah, those were the days...

[bandmiller2]

Swamper,thanks for the info,its more complicated than i figured. Frank C.

[tobycirclemill]

Thanks for all the info guys I am going to run a drag chain off of elec. Instead of a blower.
The only other load on the Detroit will be an edger when I can find one and ill just ease off the head saw when the edger is working hard on a wide board. I think this Detroit might be making fuel

[captain_crunch]

 

 

 
This Detroit is not over powered running this mill so would not think it would also power an edger