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#1
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Gearing question
I have put an MB OM617 with a Jeep AX-15 in my Ford Ranger.
The AX-15 came with an electronic speedometer output, and the Ford uses a mechanical cable. I talked with a guy at a speedometer shop. I told him it has a 3.47 rear gear ratio, running 215 70R/14 tires. According to 1010 Tire they are 25.85 inches tall. He told me I would need a 35 tooth output gear, with a long shaft, and the cover plate. I found one on ebay, and installed it. According to my gps unit, it is 3 mph off at 60, and 4 mph off at 70. I trust my gps as it is accurate on the other 2 vehicles we own. I need to clarify: The truck speedometer says 60, the gps says only 57. When the truck speedometer reads 70, the gps says 66, so I am reading faster than actual. What do I need to get, a gear with more teeth, or fewer teeth to slow it down? Thanks. Rick |
#2
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I'd call it close enough. Lots of vehicles are no closer than that from the factory.
Buy one size taller tires next time and be sweet!
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#3
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Thanks for the input. Maybe I will just wait and get bigger tires next time.
Rick |
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