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post #1 of (permalink) Old 02-25-2002, 09:19 PM Thread Starter
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Time for new gears

I am ready to order my new R&P gears. I am looking at getting 4.88 because that will put me in about the same as stock RPM range, and with the little 2.5L I could use the extra grunt over the 4.56
My question is, does anyone run 4.88 in the 35? are they strong enough and does anyone have input on what gears to go with. Who makes good ones. I got a flyer from ROSSER and they have TIMKEN gears on sale. Any opinions would be great. Thanks a lot.

91 YJ 4in lift waiting in the garage till March !
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post #2 of (permalink) Old 02-25-2002, 09:40 PM
Tim
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Re: Time for new gears

Way back when, Jeep put 5.38 gears in the 4 cyl Jeeps. They had a top speed of 45 mph, but they could crawl. That was probably with tires around 28" in diameter at most. Running 35" tires with a 4 banger might warrant lower gears than 4.88's.

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post #3 of (permalink) Old 02-26-2002, 04:14 AM
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Re: Time for new gears

I didn't know Timken made gears...hmmmm. I stuck with Dana when I regeared and installed the Detroit lockers. Drivetrain Direct made me a good deal on the gears and lockers, matched Rosser's sale price on the Detroits and they have a nice "package" deal on gears.

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post #4 of (permalink) Old 02-26-2002, 05:40 AM
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Re: Time for new gears

seems like 4.88's are getting awful steep for your axles. the pinion will be getting rather small. you have 4.56's now with only 31's? 4.56's with 33's should be low enough.

post #5 of (permalink) Old 02-26-2002, 07:15 AM Thread Starter
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Re: Time for new gears

My current situation is this. I have the stock 4.10 in my front 30 and rear 35 axles. I am running 30 inch tires now. I am going to 33inch tires in a coule weeks and want to change gears. If I got to 4.56 my RPMs would be about where they are now. With 4.88 I would have the stock RPM range. And I think that having a little extra gear will make the Jeep more enjoyable to drive, I am just worried about strength.

91 YJ 4in lift waiting in the garage till March !
"It takes a special type of person to drink a cup of coffee in a jeep"
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