Re: Re: Re: O/T - any Wisconsin V-4 lovers out the

Posted by Nathan on July 28, 2004 at 11:08:34 from (64.212.141.87):

In Reply to: Re: Re: O/T - any Wisconsin V-4 lovers out there? posted by Jay on July 27, 2004 at 20:40:28:

Jay,

The difference between the VE4 and the VF4 is as follows. (There is no such thing as a model V4, that is just a generic term for all of these types of engines in general.)

VE4 Bore and Stroke: 3 x 3 1/4 (91.9 cu. in)
VF4 Bore and Stroke: 3 1/4 x 3 1/4 (107.7 cu. in.)

VE4 Horsepower:
1400 RPM--13.0
1600 RPM--15.0
1800 RPM--17.0
2000 RPM--18.7
2200 RPM--20.5
2400 RPM--21.5

VF4 Horsepower:
1400 RPM--15.0
1600 RPM--17.5
1800 RPM--19.5
2000 RPM--21.0
2200 RPM--23.0
2400 RPM--25.0

"The horse power given in the above chart is for an atmospheric temperature of 60 degrees Fahrenheit, at sea level, and at a Barometric pressure of 29.92 inches of mercury.

"For each inch lower Barometer reading deduct 3 1/2% from above horsepower.

"For each 10 degrees higher temperature there will be a reduction in horsepower of 1%.

"For each 1000 ft. altitude above sea level there will be a reduction in horsepower of 3 1/2%.

"The friction in new engines cannot be reduced to the ultimate minimum during the regular block test, but the engines are guaranteed to develop at least 85 per cent of maximum power when shipped from the factory. The power will increase, as friction is reduced, during a few days of operation."

The easiest way to tell the difference between a VE4 and a VF4 is to look at the instruction tag on the engine and see what the model number is. If this is missing, and you're really curious, you could pull one of the heads and measure the bore to find out, but as long as it's running and getting the job done, who cares, right? :) (That is, until you need parts...)
Hope this info helps,
Nathan

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