Author Topic: To SAS or not to SAS, that is the question  (Read 1459 times)

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blackdiamond

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Re: To SAS or not to SAS, that is the question
« Reply #30 on: Mar 12, 2019, 01:09:58 PM »
Any suggestions for a source on this or does it need to be custom fabricated?

Itís the only TG product that I will recommend, but I have their skid plate from when Marlin sold it first and itís like tank armor.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

Moab Tested & Rubicon Approved

blackdiamond

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Re: To SAS or not to SAS, that is the question
« Reply #31 on: Mar 12, 2019, 01:11:04 PM »
Yes, I have tried the power braking trick, but I usually can't do it without killing the engine.  Like you, I am thinking that with the dual ultimate I can do that to engage the front - another reason I am now leaning toward doing the rear ARB and just regearing the front.

You can power brake with a single 4.70:1 t-case. The lower the gears the better it works.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

Moab Tested & Rubicon Approved

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #32 on: Mar 12, 2019, 06:54:29 PM »
What I meant to convey is that If I had an IFS truck, the most I would do is single case gears, a rear locker, and possible traction aid up front. If you are going to spend the money and effort for dual cases, gears, lockers, driveshafts etc...I would go straight axle now. Whether it be changing the frame to pre 86 or 2wd frame wSAS, modifying your frame wSAS or getting a different truck altogether. You'll eventually break and have to upgrade every part of the IFS with that much torque on it. Not adding a locker to the front doesn't mean you won't break the front gears not to mention all the steering and axle components. If you had a 96 or later it would make more sense to keep the IFS. This is my honest opinion and I hope I don't sound like a jerk.

Thanks for the clarification.  I appreciate your honest opinion - you don't sound like a jerk at all!  This is exactly what I am trying to evaluate before spending $.
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #33 on: Mar 12, 2019, 06:58:30 PM »
Itís the only TG product that I will recommend, but I have their skid plate from when Marlin sold it first and itís like tank armor.

Thanks,  I will check it out!
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Snowtoy

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Re: To SAS or not to SAS, that is the question
« Reply #34 on: Mar 12, 2019, 10:42:29 PM »
I didn't know that you can do 2wd low with the dual cases.  I have never seen a video or explanation on shifting with dual cases and how to use them for gearing options.  I understand the theory and have seen many videos of performance on the trail but how do you select shift locations in the cab with the duals?

The front case is H-N-L, the rear case works just as it does now.  Under normal driving conditions, the front case is left in H, rear case is left in 2wd.  If you shift the front into L and the leave the rear in 2wd, you have 5 2wd low range gears and reverse.  If you have 4.7's in the rear case, for for oem 4wd-L, you shift the front case into low and leave the rear in 4wd-H, from there you have multiple gear choices to find the right gear/combo for the speed you need/want.

Yes, I have tried the power braking trick, but I usually can't do it without killing the engine.  Like you, I am thinking that with the dual ultimate I can do that to engage the front - another reason I am now leaning toward doing the rear ARB and just regearing the front.

The dual cases will make it a lot easier to power brake, I usually increase the idle speed when in the rocks, and will have a hand throttle whenever I get around to running the cable.
'90 black X-cab mod'd 3.0, 33's/4.88's, rear ARB, custom bumpers, sliders, safari rack, etc.
'91 Blue X-cab 22re, 35's/5.29's,Truetrac front, ARB rear, dual cases, and custom Safari flatbed, bumper, interior.
The money pit '87 Supra resto/mod

cbeers

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Re: To SAS or not to SAS, that is the question
« Reply #35 on: Mar 13, 2019, 05:31:03 AM »
mount and skid i went front range off road but that involves welding. for bolt on I'd look at Budbuilt for starters.
CB

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #36 on: Mar 13, 2019, 07:39:19 PM »
Itís the only TG product that I will recommend, but I have their skid plate from when Marlin sold it first and itís like tank armor.

mount and skid i went front range off road but that involves welding. for bolt on I'd look at Budbuilt for starters.
CB

So I found this Heavy Duty Toyota Bomb Proof Transfer Case Mount Kit (105100-1-KIT):
http://www.lowrangeoffroad.com/heavy-duty-bomb-proof-transfercase-mount-kit.html

I assume I should use this to mount the dual transfer case and then install this Trail Gear T-Case Crossmember skidplate  (I assume that this is the one you are referring to):
http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/transfer-case/dual-transfer-case-crossmember-skidplate.html

I also found this one by BudBuilt:
http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/transfer-case/1984-1995-toyota-4cyl-dual-transfer-case-crossmember-by-budbuilt.html

Recommendations on which is better?  The Trail Gear cross member appears heavier dutyÖ
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #37 on: Mar 13, 2019, 07:57:49 PM »
The front case is H-N-L, the rear case works just as it does now.  Under normal driving conditions, the front case is left in H, rear case is left in 2wd.  If you shift the front into L and the leave the rear in 2wd, you have 5 2wd low range gears and reverse.  If you have 4.7's in the rear case, for for oem 4wd-L, you shift the front case into low and leave the rear in 4wd-H, from there you have multiple gear choices to find the right gear/combo for the speed you need/want.

The dual cases will make it a lot easier to power brake, I usually increase the idle speed when in the rocks, and will have a hand throttle whenever I get around to running the cable.

Thanks, that really helps.  So the stock 2.28 is in front and the 4.70 add on is in the back.

I have quite a few questions about the dual transfer case install, tips, and operation.  This thread is getting a bit long.  AS I am new to the forums, is it better to start a new post in the Transfer Case forum?

Thanks!
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

toyodaaddict

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Re: To SAS or not to SAS, that is the question
« Reply #38 on: Mar 14, 2019, 12:23:48 AM »
I run a budbuilt and it has never let me down. I used a TG on my dads 4runner, no complaints. I would recommend the budbuilt because it isn't TG  :usa:. Sky's crossmember looked like the one to get but i dont think it's still offered.

You can get those tcase mounts from 4xinnovations for a few bucks less than your link and get a better product. Or just run stock mounts.

4.70 goes in the rear case. Or you can just run a stock rear case and skip the 4.70 gear set. You wont be disappointed either way.

80 shortbed-22re,w56,Marlin 23 spline dual cases,HighAngle drivelines,RUF/63"chevy's,35''mtr's,85 front axle,30 spline Longfields, Allpro highsteer.87 rear axle,5.29 gears,rear spool,BudBuilt cm, marlin HD clutch,ramsey 8000 winch. 
     Also 84 toy DD 22R 4.88s,33'' toyo mt'z, marlin clutch,4inch lift/63's, HA drivelines.

cbeers

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Re: To SAS or not to SAS, that is the question
« Reply #39 on: Mar 14, 2019, 06:07:14 AM »
MC offers mounts. you will want 2 for duals. if you end up going this route pm me. i have 2 brand new i will be selling at some point. i was going to go budbuilt for my build but went FROR instead.
https://www.marlincrawler.com/armor/crossmember/crossmember-mount-hd

i prefer not to buy TG unless needed but that's just an opinion.

CB

joeyf

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Re: To SAS or not to SAS, that is the question
« Reply #40 on: Mar 14, 2019, 08:52:01 AM »
Budbuilt offers a crossmember for a rotated dual case adaper.

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #41 on: Mar 14, 2019, 11:08:22 AM »
I run a budbuilt and it has never let me down. I used a TG on my dads 4runner, no complaints. I would recommend the budbuilt because it isn't TG  :usa:. Sky's crossmember looked like the one to get but i dont think it's still offered.

You can get those tcase mounts from 4xinnovations for a few bucks less than your link and get a better product. Or just run stock mounts.

4.70 goes in the rear case. Or you can just run a stock rear case and skip the 4.70 gear set. You wont be disappointed either way.

Thanks for the feedback!
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #42 on: Mar 14, 2019, 11:10:54 AM »
MC offers mounts. you will want 2 for duals. if you end up going this route pm me. i have 2 brand new i will be selling at some point. i was going to go budbuilt for my build but went FROR instead.
https://www.marlincrawler.com/armor/crossmember/crossmember-mount-hd

i prefer not to buy TG unless needed but that's just an opinion.

CB

Thanks!  Didn't realize MC had them - prefer MC...  Will PM you when I finalize my plans.
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #43 on: Mar 14, 2019, 11:12:19 AM »
Budbuilt offers a crossmember for a rotated dual case adaper.

Thanks,  what is a rotated dual case?  I haven't heard of that before.
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

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cbeers

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Re: To SAS or not to SAS, that is the question
« Reply #45 on: Mar 14, 2019, 05:01:58 PM »
just so nobody else learns the hard way like i did...mc does not offer clocked anymore.
see my build for how that went   :maddest:

CB

Snowtoy

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Re: To SAS or not to SAS, that is the question
« Reply #46 on: Mar 14, 2019, 05:15:46 PM »
Thanks, that really helps.  So the stock 2.28 is in front and the 4.70 add on is in the back.

Doesn't have to be that way, just that is just how most used to build them.  I see Marlin sells their bolt-in crawl box w/either, so you if you buy one with 4.7's, then you would have 4.7's in the front case and stock 2.28's in the rear.

Quote
I have quite a few questions about the dual transfer case install, tips, and operation.  This thread is getting a bit long.  AS I am new to the forums, is it better to start a new post in the Transfer Case forum?

Thanks!

New thread might be helpful depending on what path you go once you get the parts, buying crawl box vs buying a used t-case, gears and installing them yourself, for now you are good, 2 pages isn't long.
'90 black X-cab mod'd 3.0, 33's/4.88's, rear ARB, custom bumpers, sliders, safari rack, etc.
'91 Blue X-cab 22re, 35's/5.29's,Truetrac front, ARB rear, dual cases, and custom Safari flatbed, bumper, interior.
The money pit '87 Supra resto/mod

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #47 on: Mar 14, 2019, 07:04:21 PM »
Doesn't have to be that way, just that is just how most used to build them.  I see Marlin sells their bolt-in crawl box w/either, so you if you buy one with 4.7's, then you would have 4.7's in the front case and stock 2.28's in the rear.
 

Got it Ė Thanks!

New thread might be helpful depending on what path you go once you get the parts, buying crawl box vs buying a used t-case, gears and installing them yourself, for now you are good, 2 pages isn't long.

Thanks for the feedback, will keep on going for now!
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #48 on: Mar 14, 2019, 07:11:31 PM »
So while looking at some of the mounts mentioned earlier I found this triple stick for dual transfer cases:

http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/transfer-case/top-shift-dual-case-triple-stick-kit-by-radesigns-rd-tsk.html

Seems like a great solution to clean up the install in the cab.  Has anyone used this?  Any thoughts?

I also saw these replacement motor mounts:

http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/engine-upgrade/bomb-proof-motor-mounts.html

Are motor mounts an issue with the dual transfer case as their write-up suggests?  Should I change them out?

Finally, I also found this extended speedometer cable they claim is needed with a dual case:

http://www.lowrangeoffroad.com/dual-transfer-case-speedo-extension-cable.html

Is this also recommended?
« Last Edit: Mar 14, 2019, 07:17:32 PM by Brazos Bill »
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

emsvitil

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Re: To SAS or not to SAS, that is the question
« Reply #49 on: Mar 14, 2019, 09:41:46 PM »
Another reason for a 4.7 rear is that you put a 23 spline 4.7 in the rear for more strength.   

The crawler box is then set up with a 21 spline input to mate with tranny and 23 spline output to mate with transfer.
Ed
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cbeers

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Re: To SAS or not to SAS, that is the question
« Reply #50 on: Mar 15, 2019, 06:14:08 AM »
new motor mounts are a good idea. my driver's side was sheared which is somewhat common. especially with lower gearing. i bought oem but they are spendy. i bought cheaper mounts from LROR but never used them.
you might be able to reroute the speedo cable and avoid the extension but i just bought it for ease.

CB

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #51 on: Mar 15, 2019, 10:45:45 AM »
new motor mounts are a good idea. my driver's side was sheared which is somewhat common. especially with lower gearing. i bought oem but they are spendy. i bought cheaper mounts from LROR but never used them.
you might be able to reroute the speedo cable and avoid the extension but i just bought it for ease.

CB

Thanks!  Any other tips when installing Dual cases?
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

OVRAROK

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Re: To SAS or not to SAS, that is the question
« Reply #52 on: Mar 15, 2019, 02:26:59 PM »
 My advice is, take your time. Also..., I like to use something to support the engine. Make sure to check gear engagement before installing. Be careful with the transmission output seal when installing. Also, your rear pinion angle... make sure to get a 2į drop, compared to the rear driveline angle. Triple measure. Hope all turns out well.  :thumbs:
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Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #53 on: Mar 15, 2019, 07:14:30 PM »
My advice is, take your time. Also..., I like to use something to support the engine. Make sure to check gear engagement before installing. Be careful with the transmission output seal when installing. Also, your rear pinion angle... make sure to get a 2į drop, compared to the rear driveline angle. Triple measure. Hope all turns out well.  :thumbs:

Thanks!   :crossed:
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #54 on: Mar 15, 2019, 07:26:08 PM »
Another reason for a 4.7 rear is that you put a 23 spline 4.7 in the rear for more strength.   

The crawler box is then set up with a 21 spline input to mate with tranny and 23 spline output to mate with transfer.

So I have looked at the MC Case options and noticed the spline options on the site.  I see what you are referring to.  I understand that the 23 spline is stronger than the 21.  I do not understand how the splines work from the Transmission thru the Tcase to the output.  Will I need any modifications on either end of the case to make this work with my Tranny, etc?  Does my stock have 21 in and 21 out instead of the 21 in and 23 out that you reference?   :confused:

Also, I understand that I will need a longer front drive shaft and a shorter rear drive shaft with the dual Tcase.  Do I have to replace both?  If not, how do I get these modified to fit?
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #55 on: Mar 15, 2019, 08:52:55 PM »
In considering the dual case and rear locker setup, I am concerned with another issue.  Last October we drove up to the top of Kendall Mountain overlooking Silverton, CO.  The trail wasnít particularly difficult, but just short of the peak at about 12,800 ft. there was a pitch of a couple hundred yards that was a very narrow and very steep loose shale shelf road with a very steep and long drop off to the driverís side.  I started up just fine, but about half way up it got a little bit steeper and suddenly the back end broke loose and started bouncing Ė towards the edge of the trail.  I have had this happen 3 or 4 times before.  Once on steep slick rock in Moab and on a couple of very steep climbs when I was on the gas to get up the incline.  Every other time I was in a spot that I could stop safely.  On this one it was downright dangerous. :smack:

Because of my previous experience I was quick off the throttle, punched the clutch and slammed on the brakes, looking at nothing but blue sky through the windshield.  I looked out the driver side window and could see straight down the mountain.  I could not see the side of the trail without opening the door.  I managed to stop a couple of feet from the edge.  The several thousand foot view down to Silverton below me was beautiful but nerve wracking.  After catching my breath I called up a spotter on the radio and carefully backed down.

Hereís a link to a photo backing down:
https://www.dropbox.com/s/jx64tt8wjzimnjo/Kendall%20Mtn.png?dl=0


Doing some research I now realize that the tire hopping I have experienced is most likely due to axle wrap caused with the rear leaf springs.  It has happened when I am on a very steep pitch and the weight of the truck is loaded on the rear axle with a lot of throttle generating heavy torque.  My concern is that with the dual Tcase and a rear locker, will I be adding to the axle wrap/wheel hopping problem in the future?

I understand that the best solution to minimize axle wrap and wheel hop (other than beefing up the Leaf pack) is to install some type of traction bar to keep the axle from turning and prevent the springs from overloading in an S configuration.  I have seen the BudBuilt traction bar and a few other solutions on line.  Has anyone  used the BudBuilt bar?  If so, can you give me some idea if it will do the job to minimize wheel hop before I proceed with the Tcase/diff changes I am considering.

Are there any other/better solutions anyone has used to eliminate or substantially reduce rear wheel hop?
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

blackdiamond

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Re: To SAS or not to SAS, that is the question
« Reply #56 on: Mar 15, 2019, 09:39:07 PM »
So I found this Heavy Duty Toyota Bomb Proof Transfer Case Mount Kit (105100-1-KIT):
http://www.lowrangeoffroad.com/heavy-duty-bomb-proof-transfercase-mount-kit.html

I assume I should use this to mount the dual transfer case and then install this Trail Gear T-Case Crossmember skidplate  (I assume that this is the one you are referring to):
http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/transfer-case/dual-transfer-case-crossmember-skidplate.html

I also found this one by BudBuilt:
http://www.lowrangeoffroad.com/toyota-off-road-parts/79-95-4runner-hilux-pickup/transfer-case/1984-1995-toyota-4cyl-dual-transfer-case-crossmember-by-budbuilt.html

Recommendations on which is better?  The Trail Gear cross member appears heavier dutyÖ


Thatís the crossmember that I have and am impressed with. There are other non-TG options that are also excellent. This is just a favorite of mine and the one TG product that I would probably buy that I could get from another vendor.

You donít want the HD mounts because they donít have the rubber to dampen the vibration unless youíre into a buggy ride.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

Moab Tested & Rubicon Approved

Snowtoy

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Re: To SAS or not to SAS, that is the question
« Reply #57 on: Mar 16, 2019, 12:21:42 AM »
Doing some research I now realize that the tire hopping I have experienced is most likely due to axle wrap caused with the rear leaf springs.  It has happened when I am on a very steep pitch and the weight of the truck is loaded on the rear axle with a lot of throttle generating heavy torque.  My concern is that with the dual Tcase and a rear locker, will I be adding to the axle wrap/wheel hopping problem in the future?

I understand that the best solution to minimize axle wrap and wheel hop (other than beefing up the Leaf pack) is to install some type of traction bar to keep the axle from turning and prevent the springs from overloading in an S configuration.  I have seen the BudBuilt traction bar and a few other solutions on line.  Has anyone  used the BudBuilt bar?  If so, can you give me some idea if it will do the job to minimize wheel hop before I proceed with the Tcase/diff changes I am considering.

Are there any other/better solutions anyone has used to eliminate or substantially reduce rear wheel hop?

What you experienced on trail was due to the engine speed you needed to have to keep the engine from stalling while moving the rig forward, combined with the loss of traction, in that situation, traction bars wouldn't have prevented the wheel hop.  With dual cases you will be able to travel slower over the same terrain with a lower engine speed, think of it as trying to climb something in 1st gear 4-H vs. 4-L.  With the 4.7's and both cases engaged, your truck should be able to move over obstacles at idle rpm, or with it turned up a little.
'90 black X-cab mod'd 3.0, 33's/4.88's, rear ARB, custom bumpers, sliders, safari rack, etc.
'91 Blue X-cab 22re, 35's/5.29's,Truetrac front, ARB rear, dual cases, and custom Safari flatbed, bumper, interior.
The money pit '87 Supra resto/mod

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #58 on: Mar 16, 2019, 07:34:24 AM »
What you experienced on trail was due to the engine speed you needed to have to keep the engine from stalling while moving the rig forward, combined with the loss of traction, in that situation, traction bars wouldn't have prevented the wheel hop.  With dual cases you will be able to travel slower over the same terrain with a lower engine speed, think of it as trying to climb something in 1st gear 4-H vs. 4-L.  With the 4.7's and both cases engaged, your truck should be able to move over obstacles at idle rpm, or with it turned up a little.

Well, that makes sense.  :smack:

I was heavy on the throttle to keep it going up the hill without stalling and was moving faster than was comfortable.  Going slower would have been much less scary and increased my control while improving my reaction time. Preventing the hop is a big bonus.

Another reason for the dual cases...  Now I am really getting excited about getting this done!  Sounds like this will solve many of my trail challenges.
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

Brazos Bill [OP]

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Re: To SAS or not to SAS, that is the question
« Reply #59 on: Mar 16, 2019, 07:36:41 AM »
You donít want the HD mounts because they donít have the rubber to dampen the vibration unless youíre into a buggy ride.

Thanks!  Should I upgrade the mounts?  To OEM or is another recommended?
1987 Std Cab IFS, OME lift, 33" Cooper STT Pro tires
TruTrack front and rear, 4.56 gears
Badland front bumper w/Warn 8000 winch, MC rear bumper & sliders
Corbeau Moab seats, shell w/roof rack

 
 
 
 
 

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