help 1206

Michael Locher · Nov 23, 2009

i have a 1206 international that we just completely redone new injector pump, injector, turbo, major overhaul and it is alittle shy on power i was wondering how to turn up the fuel just alittle

the tractor vet · Nov 23, 2009

Well what is she putting out on the dyno ??? and how many hours in to the rebuild ?? If the pump was rebuilt then i am guessing that the pump shop 91) set the pump to the stock setting or the set the pump to what the tag on the pump said and are you sure that the pump that is on the tractor is the correct one .So until ya know what she is laying down for sure don't go turning any screws as then DT361 are getting had to come by .

Michael Locher · Nov 23, 2009

its only pulling a 118 horse on the dyno
it was pulling 175 horse before rebuild
they diesel shop set every thing stock and my silage chopper takes at least a 140 horse to operate
i have about 10 complete running 361 5 part engine
and several 407 so if it blows i have parts
the only reason we overhauled it was it had 10+ thousand hours and it was getting hard to start

pete 23 · Nov 23, 2009

First off, diesel repairs shops always put their own seal on pump so any adjustments would no doubt need their permission. Original 1206 was rated at 112, although I don't recall ever seeing one that didn't put out more than that. The main adjustment gets kind of tricky as you need to remove a few components to get at it and it is just quess and by golly until you dyno it again. I would certainly inquire at the shop who rebuilt pump before making any adjutments. On to something else here, you say you have some parted 361 engines, do you by chance have one you can measure the piston protrusion over block at tdc on one that did start easilly. There are no specs in IH service manual and at my age, memory doesn't always serve me correctly. I found specs from machine shop that says .030 to .037 protrusion but that seems a little high to me. Sleeve flange height is .030 to .040 and I am good with that.

Anonymous-0 · Nov 24, 2009

Thats hard to beleive, 175 hp out of a 361. That much fuel going into a 361 would melt it down when pulling it at that max amount of hp. MAX on thoes motors should not be over 130. I have worked at a tractor dealership in the early 1960s thru the late 80s and seen first hand the effects of people bragging on how much hp they are getting out of there tractors and then here they come in the shop like, WHAT HAPPENED? Cranks broke, rods out the block, valves melted, exaust manifold ready to fall off, transmissions shot

Larry B 1486 · Nov 24, 2009

That tractor is factory 112 hp. Did not think you could get that much hp out of a 1206 motor.

Michael Locher · Nov 24, 2009

pete the best i can tell i checked all 5 engines and it ranges from .32-.36
there are alot of turboed 806-856 running p-pumps built roosa in the fields where i live and none have any engine trouble even running stock head gaskets

pete 23 · Nov 24, 2009

Thanks for checking that out.

help 1206

Michael Locher

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the tractor vet

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Michael Locher

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pete 23

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Anonymous-0

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Larry B 1486

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Michael Locher

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pete 23

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