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Go Back   TDR Roundtable > General Turbo Diesel Topics > Cummins/Diesel Conversions

View Poll Results: should i............
turn the rotary pump up 5 62.50%
change axle gears 2 25.00%
leave it alone and drive it like it is 1 12.50%
propane inject it 0 0%
Voters: 8. You may not vote on this poll

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4bt power question
Old 03-08-2004, 12:23 AM   #1 (permalink)
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Join Date: Jul 2003
Location: baton rouge (near)
Posts: 146
4bt power question

my cpl 858 105hp motor is up and running in the m715

heres the deal. nv4500 tranny with .73 od. 4.56 gears on 38.7 tires, 6500 lbs, poor aerodynamics

1st through 4th fine. i take 4th to 64 mph and 5th stops accelerating at 67.8, pedal to the floor
so is it a
lack of hp?
lack of tq?
lack of gears?
aerodynamic drag?

id like to hit 70 or so..... but in the interest of fuel economy i like the lower rpm at 65.

all speeds are gps

would turning the pump up help any of the top speed? or change gears, assuming i cannot live with it?

Last edited by LAlessi; 03-08-2004 at 12:33 AM..
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