Mile Marker conversion? -
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Unread 06-01-2007, 10:58 AM   #1
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Location: BEND, OREGON
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Mile Marker conversion?

It is time to re-build my quadratrac transfere case and I am wondering if anyone has advice on whether the two wheel drive option is worth the effort. I also have the low range option. There is a nice klunk when I put it in gear and from what I've read, the chain and maybe a shaft should be replaced. I'm looking at the Mile Marker conversion/ re-build kit. Is there significant gas mileage improvement when switched to two wheel?

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Unread 06-04-2007, 07:06 AM   #2
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Not a significant gain in mileage with the part-time kit but you also have a little less wear and tear on the front axle components. DO NOT get the 16% overdrive option with the part-time kit. It can really make a rig sluggish an effectively lowers a rigs crawl ratio. It sounds as if your current QT has a bad chain. You can drain the fluid and open the inspection plug on the bottom of the case and use a screwdriver to see how much play is in the chain. If it's over 3/4", time for a new chain. Hopefully, you won't need a new low range mainshaft. These are not available anymore, even with a part-time kit. Most of the time the clunks are sign of a stretched chain.
Patrick V.
Valparaiso, IN
73 Jeep J4000 360 .040 over, Summit K8600 Cam, Edelbrock Manifold and 750CFM 4V TH400/1339 QT
78 Cherokee Chief- Hunting Property Rig
05 Grand Cherokee- 3.7 V6 5 speed auto
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Unread 06-04-2007, 10:51 PM   #3
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Thanks, I hope it is just the chain and I'll avoid the overdrive gear!
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Unread 06-04-2007, 11:56 PM   #4
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With the part time kit you won't need the expensive QT fluid anymore either.
02 Dakota Quad Cab 4.7 5 spd

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