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TE 20 Engines

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Vaughan William

01-14-2001 12:26:05




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I'm confused. To my knowledge their are 3 sorts of engines fitted to early grey fergys. They are

* the Continental Z-120 (knowbody here in Australia seems to have ever seen one in a grey),

* the Standard engines based on the Vanguard car engines.

* and a diesel.

The Standard engine Fergys are the most popular down under and came in 2 sizes, the 80mm bore and the 85mm bore. These have displacements of 1850 and 2088 cc. Now, in a orginal instruction book I have says the 85mm bore 2088cc engine develops 28.4 Belt H.P. @ 2000 rpm. This seems consistant with other information I've seen on the 'net. The smaller 80mm bore engine is said to produce 23.9 H.P. However, these 2 engines here in Australia are generally refered 16 and 18 horsepower engines.

My question. Does anybody know what the real situation is? Why would these engines be refered to as 16 and 18HP engines when it seems as if the power output is 23.9 and 28.2?

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Ray,IN

01-14-2001 18:58:48




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 Re: TE 20 Engines in reply to Vaughan Williams, 01-14-2001 12:26:05  
The Owners manual cites drawbar hp here in the USA, this is always a lower hp than any other ratings. Drawbar hp was considered the more useable rating, as hp was measured after accounting for friction and hyd. pump, etc. between the engine and the final hitch point. The best measurement of all though, is the Nebraska tests, which was taken with the tractor operating under load. Different points are used to obtain hp, so always use the same one for comparisons. The larger belt hp ratings you give are taken from a belt pully attached to the pto.

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Fred OH

01-15-2001 06:39:37




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 Re: Re: TE 20 Engines in reply to Ray,IN, 01-14-2001 18:58:48  
Would I be right in saying that the reason that there is a difference between drawbar and belt hp is that one is when the tractor is moving and one is stationary? And the one when the machine is moving and using the gearing would be somewhat less? L8R----Fred OH



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Ray,IN

01-15-2001 17:19:20




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 Re: Re: Re: TE 20 Engines in reply to Fred OH, 01-15-2001 06:39:37  
Yes, Thats the principle. The power it takes to turn all the gearing and rolling resistance is measured at the drawbar. The belt hp cannot measure this. This is why flywheel hp is so much higher, none of the drive train is powered.



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