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Old July 17th 05, 04:20 PM
RoyJ
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I run the same 3.07 and 31" tires. 4th gear is about 2100 at 60 and 2500
at 70. 5th gear is ridiculous: 1500 and 1750 at 60 and 70 respectively.
The 2500 is a bit higher than I would like for steady crusising but not
bad.

Earle Horton wrote:
> What was your engine rpm at, say sixty? I am thinking that 3.07 gears and
> 31 inch tires might be too much for even fourth gear. If so, then regearing
> would fix a lot. Street tires would help too, if you want to run it on the
> street.
>
> Earle
>
> "Dave Jost" > wrote in message
> oups.com...
>
>>Greetings.
>>
>>I have a 92 YJ 4.0 with 31s on it. I bought it with 120K and have put
>>maybe 5K more on it. Yesterday I thought it would be a good idea to
>>take it down I-80 for a weekend visit to a town 3 hours away. Unlike
>>most Wyoming 1-80 days it wasn't TOO windy, but the Jeep was having a
>>hell of a time. I figured it was the fact that my Jeep came with 3.07
>>gears and those leave me without 5th gear... But as I kept going it
>>kept sucking gas. I stopped real quickly and I noticed that the piston
>>slap seemed much louder and my oil pressure was low.. When I kept going
>>the pressure came back up to normal, but it kept sucking gas. In 60
>>miles I used about 25 bucks in gas.
>>
>>So my question is. Is this a problem due to 3.07 gears that I need to
>>fix, or a problem with the engine, or both. When I gave up the quest it
>>slapped hard for awhile then it sounded normal after a bit. My temp was
>>normal and the oil level is good. I'm using syn 10-30. I'm guessing
>>that a re-gear would do the trick, but I want to see you all think. In
>>town and up till now the Jeep has run very good. The only problem I
>>have ever noticed is that when I run on the highway for a short time
>>and then stop I can smell a gassy smell.
>>
>>Thanks for helping
>>D
>>

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