[MENTION=116877]fourfive[/MENTION] have you measured from your center hub to fender up front? You essentially have the same set-up as me. I'm curious to see what you measure as compared to my 23 1/2. If it is comparable i'm not sure what else would be making the cv angles greater on mine. I have the front diff drop installed.
Wrote out a timeline of ride quality with the various suspension changes & listed some things I will be looking into to see if it resolves the vibration I get in AWD at highway speeds. In my case, this isn't a huge issue for me right now since I don't get any vibration in 2WD & the only time I will use AWD is if it is raining BUT, this would be a different story if it occurred in 2WD as well. Regardless, this is something I would still like to resolve. I bolded the info you were asking for so you didn't have to sort through the rest of my garbage. Also, don't remember if you said you had a diff drop but if not, that may be why your cv angles look steeper than mine...I don't have a pic of my angles but they don't look as steep and the ribs on my outer boots are not touching. I did notice this morning that the ribs on the inner boots are slightly touching. Not sure how much the 1" diff drop actually helps but I have one on mine.
After installation, alignment by "specialty shop", & some "fine tuning" on my coilovers, my mid hub to fender measurements were: (this was Jan 2015 w/ 890s in rear)
front driver: 22.75 - 23" (1.5" of threads showing)
front pass: 22.75-23" (.8" threads showing)
rear driver: 23-23.25"
rear pass: 23.25-23.5"
Ride quality:
-Very similar to stock with a "good firmness".
-No vibrations at any speed on paved roads in 2WD
-No vibrations at any speeds on paved roads in AWD (not locked 4WD).
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Fast forward to May 2015. I did some front end service work (cv's, lbj, tie rods - all OEM), installed SS adjustable panhard, toytec parking brake cable extension bracket, & switched out my 890s to superflex (haven't updated the pic or info in my sig yet). I thought I kept my coilover height the same but I actually forgot that I turned them up to match the superflex (I was wanting about .5 - .75" of rake).
After turning my front coilovers up & multiple alignments from firestone b/c they suck, my mid hub to fender measurements were: (w/ superflex)
front driver: 23-23.25" (1.7" threads showing)
front pass: 23-23.25" (1.0" threads showing)
rear driver: 23.25-23.5"
rear pass: 23.5-23.75"
Ride quality:
-A very slight increase in firmness in the front and mild increase in stiffness in the back probably due to superflex
-No vibrations at any speeds on paved roads in 2WD.
-No vibrations 0-50mph on paved roads in AWD.
-Moderate vibrations (similar feeling when driving on the emergency lane on the highway) 55+mph on paved roads with my foot on the gas in AWD. If i let off the gas and i'm at 55+mph, vibration goes away. If put it in neutral 55+mph, vibration goes away.
My current thoughts on potential causes for the vibration I get in AWD @ 55+mph & very possible I may be way off base:
-Issue with cv axles (angle, bad joint...even though there's no clicking sound, etc)
-Installation error, by me, when installing the axles. The passenger side axle is a toyota reman & the driver side is the factory original that I rebooted with a toyota boot kit.
-Installation error, by me, when installing itr/otr/lbj
-1/4" increase in ride height may have changed the cv angles just enough to create the vibration in AWD....but for some reason isn't there in 2WD.
-1/2 - 3/4" increase in rear height from superflex may have altered something in the back end enough to create vibrations in AWD at 55+mph (pinion angle, driveshaft, etc.).
-Adjustable panhard or parking brake extension braket doing something to alter something enough to cause vibrations in AWD at 55+mph....I'm just listing it b/c it is something i did not have installed pre-vibration & in case I end up ruling everything else out. I have my panhard adjusted to about 37.25"
