Update:

Tundra 4x4 TRD Coils have been shipped and should arrive this week
OEM 4runner coilpack top plates have been shipped and should arrive this week
Revtek extended studs and nylock nuts have arrived

I'll be doing the swap in about a week and a half. I'll take before and after pics as well as measurements and the required commentary after the test drive. I expect to get 1.5" of lift from the Tundra TRD 4x4 coils - same as a Tundra 2wd gets by swapping them out. I'll add a top spacer to total 2"-2.25" and then take it for a test drive.

 

There is no reason to put in a topout spacer while my upper arms are limiting droop. If/when I upgrade the upper arms, I'll put in a topout spacer to take advantage of the extra possible droop.

It rides great as-is, mainly just firmer due to the new shocks. I don't really care about an extra inch of droop on this rig anyway. The rear flex and locker will be plenty to get this relatively stock vehicle through the places I plan on taking it. I'll save my offroad time and money budget for the '86 which is my real wheeler. The only thing left to do on this one is to trim the limited flares and pound the firewall seam to keep the 285's from rubbing. I might put in some 4.88's too though. I guess it never *really* ends.

 

FYI- Team Arizona is on hold until you check this out. We don't see much point in moving forward until you test what you have put together. We also feel you will give an "accurate" stiffness call.

Team AZ being Steve & Robb.

 

I'll share info if you share ROYALTIES $$$$$!

I'll let you know what I think. AFTER I get this done, then I'll put on the M8000. I don't want to skew what I think about them by adding the extra weight before. I'm suspecting the TRD coils to be slightly stiffer and hopefully slightly longer. If this works, then Cornfed's and OME's will be obsolete. And, if I end up w/ what I'm working on for a top spacer, then I can beat revtek on price for them. If I get this set up and it works out, all that would be needed in addition to the coils and my attempt at a top spacer would be the Revtek long studs and a coil compressor.

 

If it works out, there won't be any Royalties to share. Spacers will be a thing of the past.

I'll try out the Sequoia coils. IF, what you get look promiseing.

 

...Don't forget to try the Land Cruiser coils.

I will stick with my DRs. They take the droop to the max as far as I can tell and you can set the height anywhere you want, any time you want and ride great on and off road.

Gadget

 

The FZJ-100 uses Torsion Bars. The FZJ-80 front coils are completely different.

They have to be from the coil/strut family.

 

bump. any updates?

 

I'm putting my coils on tomorrow. I'll let you know.

 

Allright, here's the scoop:

I had Tundra 2WD Regular Coil Springs, verified by color code. I was running these with some Cornfed Spacers (second generation design that eliminated the OEM top plates. they measured EXACTLY 1.5" thick). Today, I pulled them off and installed some Tundra TRD 4WD Coils with OEM 4Runner Top Plates and Revtek Extended Studs. On top of the coil pack, I installed a custom 3/8" thick spacer.

Measurements:

Type/Style of Spring & Lift: 2WD w/ Cornfed
Lower Center Eye to Top of Top Plate (uninstalled): 17.25"
Center of Wheel Hub to Bottom Edge of Flare (installed): 21.75"

Type/Style of Spring & Lift: 2WD w/ OEM Top Plate
Lower Center Eye to Top of Top Plate (uninstalled): 15.875"
Center of Wheel Hub to Bottom Edge of Flare (installed): ---

Type/Style of Spring & Lift: 4WD w/ Top Plate
Lower Center Eye to Top of Top Plate (uninstalled): 19.25"
Center of Wheel Hub to Bottom Edge of Flare (installed): ---

Type/Style of Spring & Lift: 4WD w/ Top Spacer
Lower Center Eye to Top of Top Plate (uninstalled): 19.625"
Center of Wheel Hub to Bottom Edge of Flare (installed): 22.00"


In all, I got rid of the Cornfed Spacer and still gained a quarter inch. The extra 2" on the UNinstalled lengths is probally due to the fact that they weren't installed and had not settled any. These are with brand new 4WD springs that have never been installed. I expect to get a tiny bit of settling, which would put me back at the original height using the cornfeds.

These measurements are with the ARB bumper, M8000 winch w/ steel line, and TRD SC all installed. So far, I can't tell much of a difference in the ride, but I haven't driven it much. I'll know more in a few days.

In all, you can get the coils for $120 or so, add for the longer studs and then a 3/8" thick custom spacer (from me ).

 

Good info Andy. I may try a similar set-up after I get back from my CO/Moab vacation.

 

Good deal. That is what I though would happen but you never know until you actually try it.

Several points:

1. Were the TRD Tundra coils Progressive? Stacks closer at one end and further away other places? The OME 891 rear coils IS PROGRESSIVE if you want an example.

2. Part numbers, We have to use actual part numbers to keep things consistant. What year Tundra were they for and what are the Toyota Part Numbers?

3. The Revtek top-outs are 3/8" not 1/4" but you are absolutley right, those flame cut Revtek spacers are pretty ghetto.

4. We need to find a source for the longer studs. Getting them from Revtek will be too pricey and is pointless if we can find another source..

5. It should also be stated that this should be installed on a high quality shock like an Old Man Emu with the Massive piston or a Bilstein Aftermarket/Tundra TRD Bilstein. NOT on anything Tacoma TRD, that stuff is junk.

6. Drive it a bit and use your tender buns meter to see exaclty how it stacks up. Just think if you would have run those 882's installed correclty, you really would have hated it.


Without having the 2 installed on 2 verhicles at the same place at the same time, I do believe that this Tundra Coil formual and the Frankenstein ( Which you can not longer build due to a Cornbred Design change ) are more or less the same.

SPANK a SAW owner and run TUNDRAS!

 

Ooooh..this is great news! Makes me hate my ultra stiff SAW's tho!
I bet it would be ultra-cheap to have somebody mass produce those spacers. Are you looking into selling them Andy?

 

I will have to be a package deal. Spacer and studs. I have the drawings for the Sonoran Steel Frankenstein spacer done (actually Mike does) so people with 99 & 00 4Runners can re-use their stock coils, but this Tundra coil add on would be a nice product as well. Andy and myself tossed the idea back and forth a bit.

The thing is where to get the studs???

 

The Sequoia coil is longer. It may be just what you are describeing. Just the coil, not top out spacer.

Now keep in mind that the top out spacer is ALSO giving you more droop. So if you cut that out, you're removeing travel.

3/8" lower than stock with a Bilstein/OME/SAW Racerunner is absolute max extension. So the top out has a purpose. We have thought this through extremely well.





(the black shock is an OME shock)

 

Exactly why I deleted that.. I'm thinking out loud.

 

Revtek studs = Ribbed neck "plow bolts" ??

 

Nope. Didn't appear to be progressive. Coil wraps were evenly stacked. The TRD 4WD coils were about 1/2" longer than the 2WD Standard Coils.



These were BRAND NEW ebay specials. They were replacements for a guy who has a 2003 Tundra 2WD. He wanted the front level, and decided against it when he found out about having to use coil spring compressors. I verified that they are TRD 4WD Tundra coils via the paint chart. They were Red/Yellow and Purple/Yellow.



Cool. I think I have a source for a CNC (Computer Guided) Router cutter for the spacers. I've already located a source for the material.



I'm talking w/ someone about the bolts tomorrow. I'm thinking I could do a package that would include 2 spacers and 6 extended bolts for about $75. You can re-use your OEM nuts.



I agree 100%. Either N91s w/ Bilstein Boots or RED Tundra TRD Bilstein Struts.



So far, I'm VERY impressed. For some reason - EVEN THOUGH THEY DON"T APPEAR TO BE PROGRESSIVE - they feel SOFTER than the 2WD coils. This may be due to the use of spacers on the 2WD coils. Either way, the ride is even better than before. It soaks up bumps that it was a little stiff on before. Cornering is the same. Overall, I'd say that it's DEFINITELY an improvement over the 2WD coils, and those were NIGHT & DAY difference compared w/ the 882's.

I should know in a week or two if I will be able to offer the studs and spacers as a package. If I can, then the price would be in the $70 range and would include 2 spacers and 6 extended studs. You'd still need to get the TRD Tundra 4WD coils and then some NEW struts. The coils are about $120 or so new and can be had for about $50 a pair (+ some patience) as takeoffs from new trucks getting lifted. If things go well, then I could have some set available sometime in Oct.

 

I am using bolts and nuts from the hardware store, no special orders for me. I have zero problems.

Whats the necessity for the Revtek or other custom bolts?

 

Yes I know they were new springs off of eBay, but at this point the actual Toyota Part numbers need to surface.

Most people will be ordering new coils from the dealer and to be honest with you I don't trust all the parts men around the country. Some parts guys are good some are not. These doods need to go in or call an online dealer with part numbers.