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-   -   lingo: A lower gear ratio (higher numerically) (http://www.wranglerforum.com/f19/lingo-a-lower-gear-ratio-higher-numerically-250603.html)

live_slow 06-20-2013 11:46 AM

lingo: A lower gear ratio (higher numerically)
 
OK,

Growing up all the old folks and motor heads talked about "tall gears" and I guess it stuck in my head. I know that mostly this was in the context of off road applications (Scouts, CJs, K5s, Tractors, etc.) and they were talking about "lower" gear ratios. No one around did any street builds, except maybe a few who like to drag race.

But if today I said, "I think you need taller gears for those 37s" people would probably look at me funny.

I found some discussions about the term "taller gears" or "tall gears" that jive with my memories.

The only general consensus was that "taller" should be taken in context, and probably points out the fact someone changed the factory ring and pinion to a lower gear ratio (higher numerically) or in the world of auto-racing it can / often does mean the exact opposite. "Tall gears or gearing produce higher top speeds and have a smaller numeric value."


Then I found a list that had all the terms I had heard before and a few new ones.

Short gears
Deep gears
Slow-ratio gears
Stoplight gears
More gear
Tight gears
Tall gears
Shallow gears
Fast-ratio gears
Highway gears
Less gear
Loose gears


Anyway, most of the modern talk just spells out the ratio anyway, so maybe it's a non-issue.

Scott-CJ8 06-20-2013 01:58 PM

I have heard "taller gears" also in the same context as you are talking about. Funny how the lingo has changed. But I do like the modern talk better, and most folks understand it as well.

live_slow 06-20-2013 02:29 PM

It may be a rural thing since lower gears have a higher number and "tall" is "high".

It seems like just a decade ago, 4.56 or lower was the entry point to running 33s or 35s, but with all the changes, folks run that on stock 3.73 and 4.10s with no real performance problems.

bigdogtex 07-01-2013 09:08 PM

I'm new, and I'm not a mechanic. My new Jeep as 35" wheels and a 4" lift. Do I need to change the gear ratio, and if so can you explain the basics of what that actually means? Also, do I need bigger brakes to handle the bigger tires? Thanks!

Wade88 07-01-2013 09:14 PM

Quote:

Originally Posted by bigdogtex (Post 3918496)
I'm new, and I'm not a mechanic. My new Jeep as 35" wheels and a 4" lift. Do I need to change the gear ratio, and if so can you explain the basics of what that actually means? Also, do I need bigger brakes to handle the bigger tires? Thanks!

I just got a jeep with almost the same setup. 35"s but I've got a 3.5" lift I too was wondering the same thing. I'm def not a auto mechanic. My knowledge is limited to HVAC

Tweak 07-01-2013 10:31 PM

Quote:

Originally Posted by bigdogtex (Post 3918496)
I'm new, and I'm not a mechanic. My new Jeep as 35" wheels and a 4" lift. Do I need to change the gear ratio, and if so can you explain the basics of what that actually means? Also, do I need bigger brakes to handle the bigger tires? Thanks!

well what gears do you have now? what year? if you have 3.73's and a 3.6 I would leave it be.


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