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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: cracked91 on June 26, 2010, 04:07:42 PM

Title: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: cracked91 on June 26, 2010, 04:07:42 PM

Hi all,

Im running 31"  tires with SOA on my stock gearing rig, and am going to be re-gearing soon.

From the standpoint of a daily driver, and fair amounts of highway use, which would be a better idea?

Should I just buckle down and re-gear the Ring and pinion or just get the 6.5:1 gearset for the transfer case.

I have an extra t case, and was just going to do that, but people seem to think doing the diffs is a much more solid modification.

Any advice would be greatly appreciated.

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: ack on June 26, 2010, 08:31:52 PM

The main difference between dif and t-case gearing, is that R&P gearing takes the stress load off the drivetrain at the differential.  Tcase gearing takes the stress load off at the transmission output.

In terms of DD, either way is good.  In terms of Offroading, I think that R&P gearing cuts down on drivetrain component stress and breakage.

I have been wrong...

Both together give you excellent crawl abilities.

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: Drone637 on July 01, 2010, 02:09:01 PM

I like the t-case gearing myself, but both have their place.  With the amount you spend on gears for both the front and rear you can replace the transfer case gears, plus you get a low range reduction. 

Ack is correct in that the gears in the diff cuts down the stress a bit as your R&P doesn't have as much torque going into it.  But I have usually found that the axles are the weak point, not the u-joints and diff.

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: jaunty on July 01, 2010, 06:19:15 PM

the t-case route is great because it gives you LOW reduction, and a little high reduction (back to stock).  R&P will reduce everything equally.    just my opinion...

play with the t-case numbers on the calc.

http://www.lowrangeoffroad.com/index.php/suzuki/samurai/transfer-case.html (http://www.lowrangeoffroad.com/index.php/suzuki/samurai/transfer-case.html)

http://www.lepayne.com/gears.html (http://www.lepayne.com/gears.html)

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: ack on July 01, 2010, 07:32:09 PM

Just when you think a debate will break out...

Drone367 has a very good point there!  Setting up a set of ring and pinions is much more difficult ( read "costly") than a transfer case regearing.

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: my996duc1 on July 01, 2010, 09:35:06 PM

I vote a little bit of both...if you can afford it
play with the gearing calculators online and see what will work best.

Here is an article on this from TRAIL TOUGH :
http://trailtough.com/index.php?option=com_content&view=article&id=60:gears&catid=36:techinfo&Itemid=60 (http://trailtough.com/index.php?option=com_content&view=article&id=60:gears&catid=36:techinfo&Itemid=60)

Title: Re: Ring and Pinion vs Transfer case gearing on an 88 Sami
Post by: Drone637 on July 02, 2010, 10:52:38 AM

Quote from: ack on July 01, 2010, 07:32:09 PM

Just when you think a debate will break out...

I think this debate has been done a few times.  I'm just to lazy to crawl the archives.  :D