View Full Version : 9u D318 Vs Dw10 D318
10-20-2009, 05:14 PM
This may seem stuipid but 9u is 70 somthing horse power right and a dw10 is 115 right? Now where does all that power come from? Minor settings in the pump?
10-20-2009, 05:38 PM
They fiddled with all kinds of things on the D318. Most hp gains were by cranking up the rpm's. Got all the way up to 140 hp on the #14 turbocharged graders. Changes in rack settings, governor groups and springs, camshaft changes in the injector pumps and late engines went to cam ground pistons with reduced ring count to cut back on friction.
Early D6 was about 70hp later units 90hp. The 1V series DW10 was rated at 1800 rpm, the early D6 at 1600.
10-20-2009, 07:10 PM
Now me and my dad have a 1v dw10 pump apart off our dw10 because the clip on the rack fell off on the governer side of the pump and the gear segment went to far that it wouldn't come back into the rack teeth and was running at a about 3000 rpms before we could shut it off with the decompression.:( now i noticed stamped above the rack on the pump housing it says cam then the part #. But i notice a huge power diffrence between our 2 9u's and that dw10 it threw straight black smoke in the air when you steped on it with it just parked.:D Now when you say 90 horse on a D6 you mean 9u? So Glen Ghilotti's 9U is a 1959-60 so would it be put in that class?
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