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Case Tractors Discussion Forum
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Modified 970 now turbo

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chris402

11-18-2005 14:27:17




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I've got a 970, straight 8, that I love. I've put a turbo from a 1070T on it and now it's a even bigger powerhouse. My question is: since Case never put turbo on the 401's, could I be damaging something? Also if I sound decide to rebuild it in the future (no need now) can I get Pistons for a 401 designed for turbo? Will the 451 sleeve kit work in this block? If so I could put a 1170 sleeve kit in.

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Paul D

11-21-2005 18:51:36




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
The answer to the question about dropping 451 sleeves in a 401 is No they don't fit. The bores on the 401 block are about 1/8 of an inch smaller than a 451 block. Most good automotive machine shops can bore your block to fit 451 sleeves, but it is kinda spendy.



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Can't even use my name

11-21-2005 14:12:25




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
What is a 1070T? Been around the 70 series Cases a long time and never heard of a 1070 with a factory turbo. Now the 1270's still had the 451 but did have a turbo and depending on what year were either 127 or 135 horse. I would assume you don't gain much without adjusting the max fuel rate. The pump is set now to feed ABOUT all the fuel you can burn and still make power for the amount of air you can get into the cylinders. When you add the turbo you shove more air in and that allows you to also add more fuel which means more power AND heat. You NEED a pyrometer or you will have a melted pile of junk.

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Nedd

11-21-2005 08:46:41




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
The sleeve diameters are different from the 401 to the 451. Crank is the same. Maybe find a GREAT machine shop that can ream out sleeve holes or find a 1070 block. Good luck.



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Rahlo

11-20-2005 20:29:13




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
The 1170/1175 451 kit will slip right in. You will need to look at the head gaskets to make sure the seal ring is large enough to fit the 451 sleeve. If not you may want to get 1170/1175 head gaskets. I'm almost certain they will wotk. Also I hope you meant you had a straight 6 not an 8 cylinder.



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lumpy

11-20-2005 07:41:37




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
We took a IH 886 non turbo and put one on it. If I remember right, the tractor dynoed at about 85 horse and 1800 hours on it before we started. After the charger was put on and a slight increase in fuel at the pump, it dynoed at 114. What a huge difference. We use the tractor for the same type of work, it just does it easier and uses less fuel because you don't have to run it at full throttle for everything like you used to. The hour meter has almost 10,000 on it and we have never opened up the engine.

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Roger (Mi)

11-19-2005 06:06:39




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 Re: Adding turbo to 970 in reply to chris402, 11-18-2005 14:27:17  
The highest reading we could get from a stock 93 horsepower 970 on the dyno without a turbo was 113 by adjusting the fuel delivery screw. Turning up the fuel delivery screw more only produced more smoke and less power. We added a turbo with the fuel delivery screw still set at the 113 horsepower level. We couldn't believe it! The dyno horsepower jumped to 171. Before we got done, we had over 300 horsepower. Better think of adding water injection at that power level or you're going to burn up pistons.

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Chris402

11-19-2005 12:44:04




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 Re: Adding turbo to 970 in reply to Roger (Mi), 11-19-2005 06:06:39  
I haven�t done anything to the pump, but I'm guessing somewhere around 105 to 110 HP. I roll hay (exct.)with this tractor and it has power to spare for that. I don't think I will be putting in a hard pull for an extended period of time like plowing would do. Does anyone know about the 451 sleeve kit? Since it looks like turbo pistons are out of the queston.



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lumpy

11-18-2005 19:33:06




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
how much h.p. do you think you gained?



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robertq

11-18-2005 14:58:02




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 Re: Modified 970 now turbo in reply to chris402, 11-18-2005 14:27:17  
One thing I would do is install a pyrometer (under $200}.That will let you see that you don't over heat top end.I would guess your pump should deliver more fuel to keep fuel-air ratio in order.I just put one on my 1200,and think they are money well spent.



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case trader

11-18-2005 15:56:40




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 Re: Modified 970 now turbo in reply to robertq, 11-18-2005 14:58:02  
don't mean to sound pesamistac but i had one set like you are talking had a pyrometer (for sure you need)after the third scored liner took it an put it on the shelf (it's for sale)at the time no turbo pistons avaiable an no piston coolers i tried a couple diff. pump settings no help, bailing hay seemed fine but put a plow on an be sure the shop is empty,i had the tractor 10 years seemed like the fresher the engine the more trouble i had (tighter clearence)good luck.

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case trader

11-18-2005 15:51:26




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 Re: Modified 970 now turbo in reply to robertq, 11-18-2005 14:58:02  
don't mean to sound pesamistac but i had one set like you are talking had a pyrometer (for sure you need)after the third scored liner took it an put it on the shelf (it's for sale)at the time no turbo pistons avaiable an no piston coolers i tried a couple diff. pump settings no help bailing hay seemed fine but put a plow on an be sure the shop is empty i hads the tractor 10 years seemed liked the fresher the engine the more trouble i had (tighter clearence)good luck.

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