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Discussion Forum

Turbo a 190?

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Richard Friedri

12-01-2002 14:26:17

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Hi I have a line on a 1965 one ninety diesel normally aspirated that will need some engine work.ie liner kit. can this engine be converted to a turbo or is this engine different from the 301 cubic inch turbo motor. Tractor sn is 190-5095D and engine is 2300402000/2d03991. Engine is apart and in two different places but owner said it was not a turbo. I am new to this vintage AC and have time only on a B. Thanks

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12-03-2002 15:02:37

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 Re: turbo a 190? in reply to Richard Friedrich, 12-01-2002 14:26:17  
The 190 drivetrain is underbuilt for that power. We had a 190XT that we used for tillage in the early 70's and the finals just wouldn't hold up to that power. If you were't using it for heavy pulling and PTO work is will be fine. Since we got a 4840 for our tillage work the 190XT is used for PTO work and we've had no final problems since.

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12-04-2002 21:13:20

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 Re: Re: turbo a 190? in reply to Guy, 12-03-2002 15:02:37  
I was an AC dealer in the 70s. I had a customer with a hopped up 190XT. He tore up the differential and at that time AC had a replacement 3 spider diff. to replace the original 2 spider rear end, but only on units that had problems. The company service rep. came out to set up the new gears. The rep. put the tractor on the dyno and it was putting out over 120 HP. He said the company wouldn't stand behind the new gears at that rate so he turned the fuel screw back to about 97 HP which most of the XTs put out from the factory. The tractor had 90% calcium load in the rears (18.4 X 34), 1000lb.ea. inside weights, and a full set of segmented weights
on the outside. He was plowing with 6 bottom semi mounted plow. I know that the customer turned up the fuel as soon as he was up the road but the tractor never came back for service. Ed

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Joe (TX)

12-02-2002 05:09:02

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 Re: turbo a 190? in reply to Richard Friedrich, 12-01-2002 14:26:17  
The 190 has a 2800 series engine. The 190XT has a 2900 series engine. Most of the engine parts are the same. One differance is the 190XT has a larger injector pump. I've seen 2800 series engines with only the turbo added. It won't develop full HP without the larger pump. I believe the 2900 uses heavier pistons also.

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Bryan Smith

12-03-2002 08:01:40

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 Re: Re: turbo a 190? in reply to Joe (TX), 12-02-2002 05:09:02  
You can turn the fuel up on the 190 w/o turbo to about 85 hp - we have a 190 engine set that way. Works fine over the past 5 years baling hay (round bales) and so forth, but haven't been tilling with it. The 190XT was rated at 93 hp with the turbo (although some were stronger than that from the factory), so you're not missing much hp by not having the turbo. Take your choice, I guess - the turbo itself is probably $1000 +, and you'll need intake and exhaust plumbing. Be easier if you could find a parts 190XT for that (one was just listed on the unofficial AC forum page).

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