offset diff?? which way to offset - Pirate4x4.Com : 4x4 and Off-Road Forum

motorman1600 · 03-19-2010, 01:05 PM

Is there a preferred direction to off set a diff. Lets say the left front wheel lifts with torque when going up a sloop under a heavy load. Would you want to off set the diff to the side that lifts, or to the opposite side. Example would be: There would be a short axle on the left and a long axle on the right if the diff was offset to the left side. I just can't figure it out. Thanks in advance.

russellmn · 03-19-2010, 01:15 PM

For the most part, we just offset the diff to the side our transfer case is on. If you're buying an Atlas or Stak and trying to decide which side, then it seems to come down to what you're used to.

David D · 03-19-2010, 07:30 PM

It seems to me that drivers drop would be easier. You would have a better chance of seeing if it was going to clear or not from the drivers seat.

JeepsRcool · 03-19-2010, 07:40 PM

My stock CJ-5 has both diffs on the passenger side, nice because if you miss it with the front, then the rear clears....

russellmn · 03-19-2010, 09:48 PM

Having both offset the same is nice that way, but unless you're willing to either stay with the dana 18 or put up with some pretty good driveline angles, there's not many t-case options.

mustange70 · 03-19-2010, 10:14 PM

profab and scs make some shiny units that seem to stand up to 1500hp monster trucks just fine . . .

MochaMike · 03-20-2010, 06:19 AM

Nice first post.

If a corner lifts under load, something is wrong.
Try changing the muffler bearing, that should help.

You guys are slackin.

iniviate · 03-20-2010, 08:40 AM

Quote:

Originally Posted by MochaMike

If a corner lifts under load, something is wrong.

maybe he has 1500hp.

trkklr77 · 03-20-2010, 08:57 AM

you never said what drive train or axles you are useing.

there are lots of options and lots of ways to acheive offsets to both sides.

d18 being about the worst possible way to do it.

fwiw, i can not think of a single vehicle that had the rear offset to the drivers side.

K5runner@hotmail.com · 03-20-2010, 09:47 AM

Put your front to the driver side, It will put youe shifters colser to you. Also you can offset your motor to the pass side to have more drive shaft/leg room.

LASER · 03-20-2010, 10:51 AM

On the front you generally wont have much choice. If this is a full frame, I'd be most concerned about keeping the drive shaft out of the transmision.

flatlander757 · 03-20-2010, 08:03 PM

After converting my TJ to 1 tons/40s and pass drop front, I am forced to run a super skinny front driveshaft and minimal uptravel w/ about 4" of lift to clear the bellhousing starter area...

I've found that there aren't too many engine/trans/t-case combos(worth swapping in) that will give a ton of room on the passenger side if you want to keep a low ride height.

RedBullJeep · 03-20-2010, 10:53 PM

Quote:

Originally Posted by MochaMike

Nice first post.

If a corner lifts under load, something is wrong.
Try changing the muffler bearing, that should help.

You guys are slackin.

H'mmm, I guess us competitors are smoking crack then because this is a consideration, as is the relationship to the links as well as the gear ratio and whether it has reduction in the hubs, and what is the rotation of the driveshaft.

Methinks you bashed too soon!

To the OP, if you're not competing at the highest levels, don't overthink it...it's a major tweaking thing that gives SOME results, but yes, you are right, it DOES make a difference, especially when climbing.

StinkBug · 03-20-2010, 11:14 PM

Quote:

Originally Posted by trkklr77

fwiw, i can not think of a single vehicle that had the rear offset to the drivers side.

The RockHer2 has both diffs offset to the drivers side. I know there are others, I just cant think of them. I can think of a lot of cars with both diffs offset to the same side, just cant remember which side they are offset to.

Mh4Runner · 03-21-2010, 08:38 AM

Quote:

Originally Posted by RedBullJeep

H'mmm, I guess us competitors are smoking crack then because this is a consideration.

Can you elaborate. I am curious to hear your thoughts as to how this affects the vehicle's dynamics.

I am having troubles seeing the differences in the leverage forces with the dif on either side.

03-19-2010, 01:05 PM	#1 (permalink)
motorman1600 Registered User Join Date: Mar 2010 Member # 156634 Posts: 1	offset diff?? which way to offset Is there a preferred direction to off set a diff. Lets say the left front wheel lifts with torque when going up a sloop under a heavy load. Would you want to off set the diff to the side that lifts, or to the opposite side. Example would be: There would be a short axle on the left and a long axle on the right if the diff was offset to the left side. I just can't figure it out. Thanks in advance.

03-19-2010, 07:40 PM	#4 (permalink)
JeepsRcool Registered User Join Date: Feb 2008 Member # 107883 Location: Garden Grove, CA Posts: 806	My stock CJ-5 has both diffs on the passenger side, nice because if you miss it with the front, then the rear clears.... __________________ [URL=http://www.pirate4x4.com/forum/showthread.php?t=871614]Plasma Table Build / Torchmate 2x2[/URL] Chevy Build with 5TonRocks......Coming Soon.....:flipoff2:

03-19-2010, 10:14 PM	#6 (permalink)
mustange70 Registered User Join Date: Jan 2005 Member # 41097 Location: Calgary Posts: 2,108	profab and scs make some shiny units that seem to stand up to 1500hp monster trucks just fine . . . __________________ 90' C350 AKA 4 door 1 ton Bronco 96' Ranger: kings, EMF parts, 800hp SBF

03-20-2010, 08:57 AM	#9 (permalink)
trkklr77 skullfuckery Join Date: Apr 2004 Member # 29016 Location: galt ca, because i wanted my own backyard Posts: 15,206	you never said what drive train or axles you are useing. there are lots of options and lots of ways to acheive offsets to both sides. d18 being about the worst possible way to do it. fwiw, i can not think of a single vehicle that had the rear offset to the drivers side. __________________ Impeach or revolt, which will it be? buy my quad http://www.pirate4x4.com/forum/vehic...00-2500-a.html I WILL TRADE FOR A ROAD WORTHY 55-57 or 71-87 CHEVY 2WD PICK UP Last edited by trkklr77; 03-20-2010 at 08:58 AM.

03-20-2010, 09:47 AM	#10 (permalink)
K5runner@hotmail.com Zeus of the Sluice Join Date: Jul 2007 Member # 96153 Location: Sun Valley, Ca Posts: 3,160	Put your front to the driver side, It will put youe shifters colser to you. Also you can offset your motor to the pass side to have more drive shaft/leg room. __________________ DD:09' V8 Colorado For Sale Toy:The BlazerRebuild Ultra4 #818 Old tow:92' Dodge Build Sold New tow:05' Dodge Crew 4x4 CTD (stock for now) Looking for sponsors, we're going racing!

03-19-2010, 07:30 PM	#3 (permalink)
David D Dynomite! Join Date: Feb 2007 Member # 86280 Location: Greer or Clemson, Sc Posts: 1,001	It seems to me that drivers drop would be easier. You would have a better chance of seeing if it was going to clear or not from the drivers seat.

03-20-2010, 10:51 AM	#11 (permalink)
LASER Registered User Join Date: Feb 2006 Member # 66858 Location: Hudson, NH Posts: 367	On the front you generally wont have much choice. If this is a full frame, I'd be most concerned about keeping the drive shaft out of the transmision. __________________ Member Deep Woods Extreme 4X4 Club Of Southern NH.

03-20-2010, 08:03 PM	#12 (permalink)
flatlander757 Registered User Join Date: Jan 2008 Member # 106845 Location: Dayton, Ohio Posts: 1,801	After converting my TJ to 1 tons/40s and pass drop front, I am forced to run a super skinny front driveshaft and minimal uptravel w/ about 4" of lift to clear the bellhousing starter area... I've found that there aren't too many engine/trans/t-case combos(worth swapping in) that will give a ton of room on the passenger side if you want to keep a low ride height. __________________ -Tony

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