2015 Mustang IRS Components. So it begins.

[edwardb]

Knuckle and hub assemblies, also waiting to be taken apart:









Interesting tag on the rear cover. No mention of friction modifier.



So now I’m up to four parts on hand for the new Roadster build. The IRS, the wind wings and visors I scored for 50% off at the FF Open House, and a new set of Harbor Freight horns. Don’t laugh. They work great and are cheap. I’ll be driving to FF to pick up the new kit hopefully in early August, based on my current production date. Then the fun really begins.

[2bking]

Nice find, and cheap for what you got. I assume when the upper and lower arms are removed they are replaced by FFR designs. I don't understand the lower A arm geometry that looks to put the A arm in a bind as it rotates through its travel. Otherwise, it looks to be a big improvement over the older design. BTW I don't see any tone rings for ABS. I wonder how ABS could be added if a builder was wanting to do so?

[RRussellTx]

Excellent - That is a great deal! I paid about $50 bucks more for the individual parts and I may or may not have everything we need...

BTW I don't see any tone rings for ABS. I wonder how ABS could be added if a builder was wanting to do so?

There is a spot to mount the ABS at the top of the hub but it looks like the tone ring is on the half shaft that will come with the kit.
IMG_0495.JPG

There should also be a tag on the bottom of the unit with the ratio mentioned (facing your pallet) - here is my 3.31 tag.
IMG_0487.JPG

[edwardb]

There should also be a tag on the bottom of the unit with the ratio mentioned (facing your pallet) - here is my 3.31 tag.
IMG_0487.JPG

Yep. My tag is visible in one of the earlier pictures I posted. Confirms it's 3.55.

[edwardb]

Nice find, and cheap for what you got. I assume when the upper and lower arms are removed they are replaced by FFR designs. I don't understand the lower A arm geometry that looks to put the A arm in a bind as it rotates through its travel. Otherwise, it looks to be a big improvement over the older design. BTW I don't see any tone rings for ABS. I wonder how ABS could be added if a builder was wanting to do so?

Right. None of the OE arms are used in the FFR design. All new stuff in the kit. I agree the geometry looks a little unusual, but there's obviously a reason it's set up that way. No binding. It moves freely. What's not obvious is some of the pivots have some swivel to them. Not just straight bushings.

Regarding ABS, as RRussell said, there is a mounting point on the top of the knuckle for the ABS sensor and cable. The sensors came with my IRS pallet, but I had them out by the time I took the first pictures. I just took a picture of the knuckle with the ABS sensor in place, showing how it extends into the hub area. I also took a picture of the CV axle end that plugs into this area. Something different is going on here because you can see there aren't tone rings as in former designs. Just did some searching, and found that wheel bearings with a magnetic ABS pulse generator are now being used in some cars. Looks like that's what Ford did here. I believe it's the dark ring right under the tip of the ABS sensor in the first pic.