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Farmall & IHC Tractors Discussion Forum
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966 turbo

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gene martin

01-09-2004 20:28:02




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i have a 966 with a turbo on it i know it has been added on. i was told this would boost this up to a 1066 is this so? and how do i know if the turbo is working ? will this hurt any thing if it is not working. (not much on mech.first tractor with diesel engine went from 9n to 966 WOW.)




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Donnie

01-10-2004 15:30:51




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 Re: 966 turbo in reply to gene martin, 01-09-2004 20:28:02  
If it is an older 966 it will have the 414, if it is a newer 966 it will have a 436. The same as a 1466 or 1566. Just with out the turbo. The motor will take it witch ever it has. The gears in the rear end are not as big as a 1066. Just don't pull the snot out of it, it will stand it for a long time. Got a customer that has a 966 with a 414 turboed that has been pulling 5-14's for years and hasn't had any problems.

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matt

01-10-2004 19:21:49




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 Re: Re: 966 turbo in reply to Donnie, 01-10-2004 15:30:51  
How many 966s did they make with 436s i always thought they started putting 436s in 9s when they came out with the 986 series



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matt

01-10-2004 08:21:47




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 Re: 966 turbo in reply to gene martin, 01-09-2004 20:28:02  
the engine in the 966 and 1066 were both dt 414 just the 1066 had a turbo put on it. A turbo put really simple is a set of two fans. The exast pressure pushes one fan as it leaves causing the other to spin. The second fan pushs air into the intake side of the engine. Under a load this push of air will increase greater than the air the engine is actually using causing boost. If your turbo is not working correctly, basically the only thing that will be hurt is the turbo itself. As long as the turbo is getting oil it will be fine, If you listen to your egine a few seconds after you shut it off you should be able to here the turbo "wind down" it will make a wistling noise that will slowly come to a stop after about 10 seonds. A way to make sure it is actually working correctly is to hook a 1-20 psi pressure gauge up to the intake plug on the right side of the engine abouve the oil dip stick. It should build boost if you start pulling put it under a load suck as driving it in road gear.

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Chuck's Repair

01-10-2004 09:24:45




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 Re: Re: 966 turbo in reply to matt, 01-10-2004 08:21:47  
The intake plug is on the left side of the engine.16 lbs. of boost pressure under full load should be about right.



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RedToyMan

01-10-2004 09:46:08




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 Re: Re: Re: 966 turbo in reply to Chuck's Repair, 01-10-2004 09:24:45  
Just a quick question. Why does the load matter? I don't think these turbos have wastegates on them. Isn't it just a matter of RPMs (higher RPMs, more air push through the exhaust, higher turbo RPMs, more boost). Just curious. Thanks!



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matt

01-10-2004 18:45:37




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 Re: Re: Re: Re: 966 turbo in reply to RedToyMan, 01-10-2004 09:46:08  
Thats what a person whould think. Boost caused by how fast the turbo is spinning compared to engine rpms. Boost is built by the difference in the amount of air leaving and entering the engine. Even though you engine may be reved up high, it really is only producing the power to run the engine at that rpm ( more like 35 hp instead of 135) so it is actually not using that much fuel. As an engine is put under load it burns more fuel causing a increase in the amount oxegen used (this chemical reaction causes a increase in total air)this increases the amount of gas leaving the engine, this combined with the fact that as an engine produces more power it actually becomes much less effiecent. With the increase in power to the ground the engine produces much more energy in the form of heat, most of this heat leaves through the exast gas causing it to expand and creating the total amount of "air" that goes throught the exast side of the turbo. These factors cause a greater diffence in the amount of air leaving the engine compared to the amount that is entering( the turbo spins faster compared to engine rpm) To put it simple more gas leaves under load causing more boost sure your engine should build a little boost at full rpm but it will actually produce more under load at low rpm and the most( 16psi)under load at full rpm. And a waste gated turbo will build more boost without load, all the waste gate does it keeps it from building too much boost under full load.Hope this helps.

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RedToyMan

01-10-2004 19:24:51




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 Re: Re: Re: Re: Re: 966 turbo in reply to matt, 01-10-2004 18:45:37  
Thanks for taking the time to answer my question. You did a great job explaining this. I appreciate it.



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Chuck's Repair

01-10-2004 16:38:53




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 Re: Re: Re: Re: 966 turbo in reply to RedToyMan, 01-10-2004 09:46:08  
Boost pressure is influenced more by exhaust temperature than RPM's.The best way to see this for yourself is to hook a pressure gauge to the intake manifold and check pressure at high idle no load.It will be around 2 lbs.Then apply a load to the engine and the boost pressure will rise proportionally to the fuel delivery and load applied.The more exhaust heat the more turbo RPM's.



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RedToyMan

01-10-2004 19:26:05




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 Re: Re: Re: Re: Re: 966 turbo in reply to Chuck's Repair, 01-10-2004 16:38:53  
Thanks for taking the time to answer my question. I appreciate it.



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deano

01-10-2004 07:10:11




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 Re: 966 turbo in reply to gene martin, 01-09-2004 20:28:02  
i had 966 was great tractor, no troubles. how much is one worth nowadays?



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Allan

01-10-2004 02:19:48




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 Re: 966 turbo in reply to gene martin, 01-09-2004 20:28:02  
Gene,

I did that to a 966 one time and it made a world of difference; it pulled like a monster.

You are a lucky man. Those are really great tractors.

Allan



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gene martin

01-10-2004 20:34:09




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 Re: Re: 966 turbo in reply to Allan, 01-10-2004 02:19:48  
thanks for everyones help on this subject.



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