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05-07-2008, 05:25 PM
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#1 | |
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easily amused
 
1992 YJ Wrangler
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4.0L engine RPM
I have a 92 YJ w 4.0L
What are the Ideal engine RPM for offroad & hwy driving? What is the safe maximum RPM for sustained use such as highway Driving &/or rockcrawling? One reason I'm asking is I'm going to regear form 3.07 to 4.56 and wondering if I'll still be able to cruize at 65+ mph with 31" tires. I'll eventually upgrade to 33"
Last edited by KraZeDav; 05-07-2008 at 06:39 PM.. |
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05-07-2008, 05:55 PM
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#2 | |
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Now in the 937
2003 TJ Wrangler
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With your AX-15's .79 OD ratio, here's what my calculator gave me:
at 65mph: 31s and 4.56 - 2539 rpm 33s and 4.56 - 2385 rpm Should be perfectly fine 
__________________
The lumbering steel-laden pig - 2003 TJ - 40" LTBs - D60/D70HD - 5.86s - Detroit lockers - 110" wheelbase Build thread here. Quote:
Pictures of it wheeling at Bill's 491 And more pics from that trip here! |
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