Author Topic: BigMike's Big Journey: A 2016 Tacoma Build Thread  (Read 164777 times)

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BigMike

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I had one of my Marlin Crawler TacoBoxes shifted into Low Range (2.28:1) to enable 2WD Low Range, which made disengaging the clutch much easier. The front end was really unloaded which meant the RCV's all-new Gen.2 CV boot design was going to get a workout. At least having the ability of a Low Range + 2WD (Thank you TacoBox!) meant the front shafts wouldn't be loaded and perhaps the boots could be happier.

The 3.5L had no power issues despite rolling on 40s (with Nitro 5.29:1 R&P). On larger roads I would shift 1st, 2nd, & 3rd before even crossing the intersection. Felt like I was a Big Rig with some huge load haha I only ran it up to 35 MPH in 6th gear and took my time in the slow lane. Brakes felt solid, however, I took advantage of downshifting/compression braking which was greatly amplified from being in low range. Of course I wouldn't have been able to stop in an emergency so I took my time and kept my distance.



My newly installed rear 3-link from Rock Solid Toys (RST) was nearly bottomed out!



New Instagram: @SlowestTacoma

Check out our new Rock Crawling Videos!
2016 56-speed 580:1 Triple T/Case 3rd gen Tacoma Rock Crawler   
1981 36-speed 511:1 3RZ-FE Rock Crawler
1987 6-speed Supercharged 4A-GZE MR2
Error occurred because of error.
"The worst of both worlds, the best of neither." -abnormaltoy
Things are only impossible until they are not.

BigMike [OP]

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I make it safely to the nearby dump and pull up on their scale. I find out that they do not assist with off-loading, and that I'd have to manually shovel it off my trailer. This would take sooooo long and beings we have another dump that does offer tractor off-loading, I decided to leave.

The bummer is that this other dump is clear on the other end of the city which would be ~ 20 miles of surface driving + morning rush hour traffic...but I had no choice now, I was committed!!

Before leaving the first dump, of course I asked what my Truck + Trailer weighed... AND ARE YOU READY FOR THIS??

15,160 POUNDS!!!!!!!!!

GOOD LORD!!! That is 7.6-tons or 6,876 kg. INSANE.

So now I was off for nearly a 20-mile trek across town... I took a video only to send to my friend. In hindsight I should have done a better job and actually tried to take good video. :P But it's better than nothing so here goes. This is in 2WD Low Range:

New Instagram: @SlowestTacoma

Check out our new Rock Crawling Videos!
2016 56-speed 580:1 Triple T/Case 3rd gen Tacoma Rock Crawler   
1981 36-speed 511:1 3RZ-FE Rock Crawler
1987 6-speed Supercharged 4A-GZE MR2
Error occurred because of error.
"The worst of both worlds, the best of neither." -abnormaltoy
Things are only impossible until they are not.

BigMike [OP]

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Made it safely to our alternative compost dump and got in-line with a bunch of contractors/gardeners



Finally, after 1 hour 36 minutes since leaving my house, I had this insane load ready to be off-loaded!!



New Instagram: @SlowestTacoma

Check out our new Rock Crawling Videos!
2016 56-speed 580:1 Triple T/Case 3rd gen Tacoma Rock Crawler   
1981 36-speed 511:1 3RZ-FE Rock Crawler
1987 6-speed Supercharged 4A-GZE MR2
Error occurred because of error.
"The worst of both worlds, the best of neither." -abnormaltoy
Things are only impossible until they are not.

BigMike [OP]

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While waiting for assistance, I took a look at the new RCV boots, which, based on previous RCV boot experience, I thought for sure would have been ripped due to driving with the front end unloaded and the axles at such a steep angle...



...but I was extremely happy to see they both survived! This is big news for RCV customers! They may have finally fixed their freak'n boot issues as I now have close to 1,000 miles on them when previous RCV boots in my experience couldn't even manage 150 miles

Driver side RCV Gen.2 outer boot



Passenger side RCV Gen.2 outer boot



Man oh man was I sure glad to see this backhoe!!



Again, only took this video to share with my buddy, so nothing too special. I was extremely impressed with the operator: He did such a gentle job at not crushing the load and removed the entire load with this same small incremental motion so as to not pull too hard on the truck and trailer. I must have thanked him a dozen times for the help!

New Instagram: @SlowestTacoma

Check out our new Rock Crawling Videos!
2016 56-speed 580:1 Triple T/Case 3rd gen Tacoma Rock Crawler   
1981 36-speed 511:1 3RZ-FE Rock Crawler
1987 6-speed Supercharged 4A-GZE MR2
Error occurred because of error.
"The worst of both worlds, the best of neither." -abnormaltoy
Things are only impossible until they are not.

BigMike [OP]

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WHEW. FINALLY!!



So next I return to the scale to weigh truck + empty trailer, which came out to....

6,640 lbs (3,012 kg)

Then I removed the trailer and weighed just the truck, which came out to...

4,840 lbs (2.195 kg)

WHICH MEANS, the total gross weight of the haul -- trailer plus soil -- came out to...

10,320 pounds of actual tow/haul weight for the Tacoma!!! That is 5.2 tons /4,681 kg!!

When the Tacoma was new it was only rated to tow 6,700 lb and I just towed 154% the rated ability yet while having Triple Marlin Crawler Transfer Cases and 40" tires on a truck built for Rock Crawling that has done the Rubicon trail 6 times plus many others. :driving:

As much as I want to be impressed by this, if you've done any hauling before you know this was FREAKING RETARDED and I am very fortunate that nothing happened and I didn't get a ticket. Had I known it would be this much weight and also that I'd have to drive this far to a second dump, then I would have just hired someone to properly haul the load away.

But man.... what a stupid yet impressive experience!! LOVE THIS TACOMA!! Also, anyone who thinks the Marlin Crawler cannot handle "heavier trucks" can freak'n shove it because I have not one but two Marlin Crawler Crawl Boxes with twice as many pieces and double the number of our Maximum Capacity Double Row bearings and it just pulled a 5-ton load without breaking a sweat. Yours truly on the other hand was definitely sweating!! :rofl:

Regards,
BigMike
New Instagram: @SlowestTacoma

Check out our new Rock Crawling Videos!
2016 56-speed 580:1 Triple T/Case 3rd gen Tacoma Rock Crawler   
1981 36-speed 511:1 3RZ-FE Rock Crawler
1987 6-speed Supercharged 4A-GZE MR2
Error occurred because of error.
"The worst of both worlds, the best of neither." -abnormaltoy
Things are only impossible until they are not.

toyyota

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Mike, isn't it fun to be a home owner? Marlin, Thanks for good tires on the trailer. Hope to see you guys soon!

ted44

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I've been trying to order this since November 2017.

I was out of town for a week and knowing time was critical I had Rocky, who is our drivetrain specialist of 16 yrs, build my TacoBox with a set of our 4.70:1 Competition gears (made from Chromoly by Toyota's own gear cutter in Japan) that feature our Total-Spline technology (world's strongest Toyota input design).

This also meant I missed the opportunity to get pics of the build. I do have studio pics for a 1st gen Tacoma which is nearly identical except for bolt patterns...



This is our MC09 TacoBox with our new updated front & rear adapters. Click each thumbnail for larger resolution:



We are looking at a 1979-95 Toyota High-Neutral-Low t/case section extracted and placed between two Marlin Crawler adapters ready to be mounted between your choice 1995.5+ transmission and transfer case.

Described by location:

Transmission --> TacoBox --> Transfer Case

Described by shift modes:

Transmission --> H-N-L --> 2H-4H-4N-4L

The nice thing about duplicating the High-Neutral-Low section is that in High Range we have a 1:1 direct drive meaning that whatever torque we have entering the Marlin Crawler will be the same exiting (ignoring insignificant parasitic losses).

New T/Case Gear choices become:
1. Marlin Crawler in High, stock Tacoma t/case in High = 1.00:1 x 1.00:1 = 1:1 (cruise on highway same as factory)
2. MC in High, Taco in Low = 1 x 2.57 = 2.57:1 (same as any other Tacoma on the trail)
3. MC in Low, Taco in High = 4.70 x 1 = 4.70:1 (83% lower than stock!)
4. MC in Low, Taco in Low = 4.70 x 2.57 = 12.08:1 (370% lower than stock!!!)

When you replace the 1979-95 2.28:1 factory Toyota low range as I've done with our 4.70:1 ratio (which Marlin created in 1995), you have what we call a "TacoBox Supreme". Probably 95% of all TacoBoxes we build are Supremes. The primary reasons for this are 1) if you're going to do this much work why not go all out, and 2) with the Supreme you get three very distinct ratios (2.57:1 & 4.70:1 & their combined 12.08:1) instead of a similar pair of 2.28:1 & 2.57:1 which isn't nearly as interesting.

There is one final part remaining and that is how do we get the smaller 23-spline automatic-type t/case input to connect to my manual transmission's larger 19-spline output and for this we designed a 19-to-23-spline coupler with an extended length specifically to match our Total Spline input technology. I'll update the thread with more info & pics of this once we get actual production couplers ready.

 
 
 
 
 

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