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Tyler Lacasse's Supercharged 3RZ Dual Cased Fully Locked Long Travel Crawler Build

Discussion in '1st Gen. Builds (1995-2004)' started by Tyler Lacasse, Apr 26, 2018.

  1. Apr 11, 2020 at 4:52 PM
    #201
    AY_ARONTRD

    AY_ARONTRD Well-Known Member

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  2. Apr 12, 2020 at 8:30 AM
    #202
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Front end is done, just awaiting the King 8" shocks now and I won't strap it until I get my 4WD axles in up front. I am running the 1.5" Spidertrax spacers still until I can get the 37s and the 17" rims as my calipers are too close for comfort to kissing the rim. Once that happens I'll be switching over to the Tundra brake kit too.

    Rear will be next weekend. I measured the All Pro Expo Springs that came in yesterday and they have 9" of travel until flat with them just sitting on the ground. I am not sure how much more total travel will come once they are hanging off of an axle. Beyond stoked looking forward to mounting the shocks outboard. Been wanting to do this since day 1.

    As far as a spring over setup, I think this setup will be pretty kickin'!!

    I am thinking King 2.0x2" bump-stops all the way around.

    LT.jpg
     
  3. Apr 12, 2020 at 12:10 PM
    #203
    04taccoo

    04taccoo Well-Known Member

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    Damn she wide:drool::drool:
     
  4. Apr 12, 2020 at 5:31 PM
    #204
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Guys!!! I just thought of something really interesting- and it may be of interest to some others on the forum as well.

    Spring under long travel- I know often at this point it is usually a whole shackle relocation, hanger, the whole nine yards.
    Spring over- usually plug and play into stock for the most part for most of the Tacoma crowd such as my All Pro Expo pack I just got.

    BUT

    Because I will be running 37s and am trying to make this a multi-purpose rig for crawling and desert smashing I am looking to still stay low all around. The MCM kit sits great with control arm angle and height.

    The rear however, will be a different story with the expo springs. Yes, springs will work great for my application and added weight, but there is also a lot of gained ride height over stock at about +3.5" of ride height. With hydro bumps, I know I can carry the rear axle a lot closer to the frame unlike super bumps where it is hard to gauge how much they actually deflect at full stuff, not to mention the length of the bump itself directly under the frame (Not thinking about leaf pack inversion right now...bear with me).

    That being said, look at @Box Rocket rear shackles and how far they hang down with a Dakar and OME setup.
    Shackle.jpg


    Because the All Pro Expo pack gives so much lift at right height with the heavy arch, I wonder if I can lower ride height a couple inches by running a longer shackle mounted above the frame like this (below picture) instead of how the factory is (see above pic). Because of the longer leverage/fulcrum effect (whatever it is called) I can run it closer to the frame and thus the vehicle at a lower rear ride height.

    Shackle Over.jpg

    Super easy to do, plenty of brackets and kits to do this extremely easy as long as I cycle the suspension to be sure nothing hits. Not concerned about pinion angle because I am welding my own leaf perches on when I do the new axle.


    What are your guys' thoughts on something like this??
     
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  5. Apr 12, 2020 at 5:32 PM
    #205
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    @LukeCC what are your thoughts? I know you haven't gone LT in the year yet, but you have any thoughts on this idea?
     
  6. Apr 13, 2020 at 3:36 AM
    #206
    LukeCC

    LukeCC Well-Known Member

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    I think you’ll yield better travel numbers while also lowering the ride height by going shackle over (9”).Going SUA with a ubolt flip kit is going to take a lot of that rear lift out from any leaf spring your going to run. As long as your geometry is happy and everything cycles I think shackle over is going to provide the best results all around
     
  7. Apr 13, 2020 at 4:02 AM
    #207
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Shackle over and spring over it is then!! Thanks Luke.
     
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  8. Apr 13, 2020 at 10:46 AM
    #208
    LukeCC

    LukeCC Well-Known Member

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    :thumbsup:
     
  9. Apr 13, 2020 at 10:47 AM
    #209
    LukeCC

    LukeCC Well-Known Member

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    Hey when you bought that tundra axle did you have to go through and replace anything like seals or was the axle itself plug and play for the most part?
     
  10. Apr 13, 2020 at 1:55 PM
    #210
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    It's good to go as I pulled it- but- you probably want the parking brake assembly on it. Only thing you really have to do is weld the Ruffstuff Specialties spring perches on.
     
    Last edited: Apr 13, 2020
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  11. Apr 14, 2020 at 5:35 AM
    #211
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Total Chaos 9" shackles on their way along with weld on shackle mounts and some other stuff.

    I am actually pretty stoked about this because out of all the time I've spent on Tacomaworld I have never really seen anyone do this with a spring over. I know it is common to mount in the frame with spring under and I am sure people are out there doing it with spring over, just not any I've seen on the forum or that have caught my attention...

    After seeing the front, I am really stoked to be able to do this and keep my overall ride height low and ride quality good at speed high. It is easy to pull off too since my fenders are cut so high and I'll have my bed off anyway when boxing the frame.

    Shackle.jpg
     
    Last edited: Apr 14, 2020
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  12. Apr 14, 2020 at 6:18 AM
    #212
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    For those of you in the know- what do you think on shackle angle?

    It seems like the general consensus is 45 degrees at ride height.

    Because these springs are new- I believe I am safe to set the shackles at 40 degrees under the operating weight of the vehicle and watch them probable settle to 45 once leaf pack breaks in? Of course I'd cycle the main leaf to make sure there is no bind as the leaves extend to flat as well as no inversion under axle weight droop.

    With what I plan to do with this thing, I am definitely strapping the rear due to the long shocks and the fear of over extending and tweaking my leaves under hard flex.
     
  13. Apr 15, 2020 at 7:35 PM
    #213
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Clooooser! Awaiting for an offer up response for one of those... You know... 6 die or whatever Universal hydraulic pipe benders. Once I get that I can bend the hoops for my shocks.

    Now on the lookout on figuring the hydro bump mounting.

    20200415_190015.jpg
     
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  14. Apr 15, 2020 at 10:41 PM
    #214
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Heeeeck yeah guys! Ordered up some 2.5X2.5 King Air/Hydro bumps form Down South Motorsports.

    I'm going to bump the rear first as I'm already welding the axle, boxing the frame, etc.

    Once done, I'll bump, strap and tub the front all at once on a weekend.

    Having second thoughts on a cheap tube bender--I'm going to heat up some 1.75" pvc pipe with a heat gun and shape it how I want for the sized shock hoop I need. Then I can just bring that and some straights of 1.75"X0.120" tube to a shop and just have them bend it real quick to my pvc pipe template. Far easier.
     
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  15. Apr 17, 2020 at 10:13 PM
    #215
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Just waiting on the fronts!

    20200417_204845.jpg
    20200417_204300.jpg
     
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  16. Apr 18, 2020 at 10:01 AM
    #216
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Okay- Here are some basic shots for reference. I am so glad I went with the shorter stroke bumps for the rear instead of 3" or 4". They'll sit somewhere like this just off the frame and I have a strike pad as well to go under. Here is also a photo of kind of where I think the shackle mount might end up on the top. Mind you- this is still the stock Tacoma rear end and not the Tundra axle yet.

    Rear Bump Location.jpg

    With the 9" TC Shackle, the leaf pack will sit right around where the factory shackle bolts to the frame, giving me a couple inches lower ride height.

    Top Shackle.jpg


    Fronts for reference (still sitting on my old short coilovers...but about at ride height I think). I am greatly concerned on the front and need to do some more researching.
    It seems like the 2.5" stroke length is far too long in this leveraged application on the control arms. Am I looking at this all wrong? I am not sure if these can be shortned beyond this length and still keep their ranges, but just scaled down <first light contact, middle range heavier damping, and finally hydraulic bump> but all scaled to work within 1.5" of stroke.

    What are your guys' thoughts?

    Front Mount.jpg

    Rear.jpg
     
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  17. Apr 18, 2020 at 10:56 AM
    #217
    LukeCC

    LukeCC Well-Known Member

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    :drool::drool::drool::drool::drool::drool::drool::drool::drool::drool::drool::drool::drool:
     
  18. Apr 18, 2020 at 11:39 AM
    #218
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    I've been studying it more and more- and maybe the 2.5" length hydro's will be fine- obviously a totally different kit but I looked at Solo Motorsports web site and came across these photos and took a look at the bump stops. This is a 4.5 kit with 17"-18" of travel, which is a whopping 4" more than what my rig is capable of. BUT, maybe mounting them in the front like this will be ideal after all at 2.5" long.

    Solo motorsports kit.jpg
    solo kit four.jpg

    solo kit two.jpg
     
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  19. Apr 18, 2020 at 11:46 AM
    #219
    LukeCC

    LukeCC Well-Known Member

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    I think the 2.5 will work just fine. Your just going to have to play around with psi and find what functions most efficiently with your particular set up and needs. I’d recommend mounting a go pro or action cam in the wheel well and fuckin hammerin some whoops. Review, adjust, repeat. until your dialed.
     
  20. Apr 19, 2020 at 7:16 AM
    #220
    Tyler Lacasse

    Tyler Lacasse [OP] Well-Known Member

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    Okay so after a lot of thinking and planning and convincing from @LukeCC and @Dalandser, I am definitely going to stick with the 2.0 bumps up front. Also, I can get 2.0s that measure 2" extended instead of 2.5". I am sure 2.0s would have worked fine in the back too, but I know even with having a well dialed in killer spring over setup and good valved shocks, I will still be hitting the rear bumps well before the fronts hydro out. Also, even though the fronts are a high leveraged application, it's not like an A-Armed diesel ford F250. I am light relatively speaking.

    I will be able to get real travel numbers in the next couple weeks of what this thing is pulling in the rear with the longer shackles and the expo pack.

    Today's goal is to get the Tundra axle under the Tacoma with the shackle relocation. Everything will only be tacked up for today and will be finished off next weekend when I pull the bed.
     
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