tractor hp ratings 170 and d17

Seth c · Jun 21, 2009

d17, and a 170, does anyone know the rated h/p for both of these?

old · Jun 21, 2009

D-17 around 52HP and the 170 around 54HP as per my neb. test list

Bill(Wis) · Jun 21, 2009

In addition to what Old said, the engines in the two, while practically identical, still had minor differences. Allis had very good luck with taking an existing engine and getting more HP out of it by upping the compression ratio and RPM. They tried it once again with the old 226 in the 170. From 1650 rated RPM in the D17 to 1800 rated RPM in the 170 and from 7.25:1 to 8.00:1. That was the "end of the line" for that engine. It tore itself apart at that RPM after awhile. Allis discontinued the use of it in future models. If you buy one, run it at the D17 RPM of 1650.

Anonymous-0 · Jun 21, 2009

I beg to differ it was around in a 175 also and they dont tear themselves apart at 2000 rpms.

Anonymous-0 · Jun 21, 2009

175 pto horses was 62.5

Anonymous-0 · Jun 21, 2009

I agree. I never saw one tear itself up running over 2000 RPM. Ran a 1958 D17 with a loader for 25 years over that speed and it runs just as good today.

Bob Bancroft · Jun 21, 2009

Neighbor recently loaned me an AC history book. I was astounded to see the first 180 with a 226! I can't remember how fast they were running it. It put out the power, but didn't hold up. Apparently it was cheaper to install a six cyl. rather than add balance gears to the four cyl.

Harvestmoonpuller · Jun 21, 2009

they actually opted to do that bekuz the motor vibrated so much so the rpms it was more cost efficient to convert them

Bill(Wis) · Jun 22, 2009

OK. Maybe it was in some of the later models but the endgines did self destruct at higher RPM's and Allis discontinued them for that and the fact that all the fence sitting ended about that time and everyone went to diesels.

Anonymous-0 · Jun 22, 2009

I know its not stock we hotroded it up pretty good but we stroked the 266 flat crank to 5.77 stroke. threw it in the crank balancer . balanced it externally with flywheel and front pulley . turned that 310 cubic inch motor 5200 rpms on ocassion pulling outlaw classes.

ohio · Jun 22, 2009

all gas tractors dissapeared. most before the 175.

Anonymous-0 · Jun 22, 2009

(quoted from post at 13:01:03 06/22/09) all gas tractors dissapeared. most before the 175.

hum i recall gas being offered all the way up to the 190xt. might have disappeared of the farms i guess . in a small tractor i would rather have a gas engine over a diesel . diesels cant hold a light to a gas engine unless they are turbo diesels .

Santiago Martinez · Jun 27, 2009

Need clarification!!! I have a model D motorgrader with a WD 45(226ci) frozen engine. With all the info on this subject here did I misunderstand or did you say that a AC 170 is a 226 ci and a 190 is also. If so would these engines bolt right into a WD45 setup? Also im not sure but would a WC engine fit in it too. am going to an auction next month (7-11)and they have two WCs and a Allis DT combine what engine does it have and would it work too? I really appreciate your help.

tractor hp ratings 170 and d17

Seth c

Member

old

Well-known Member

Bill(Wis)

Well-known Member

Anonymous-0

Well-known Member

Anonymous-0

Well-known Member

Anonymous-0

Well-known Member

Bob Bancroft

Well-known Member

Harvestmoonpuller

Member

Bill(Wis)

Well-known Member

Anonymous-0

Well-known Member

ohio

Well-known Member

Anonymous-0

Well-known Member

Santiago Martinez

Member

Similar threads