Doing a major workup on a 1990 4runner- repacking the manual hubs and such and didn't like the looks of the dust seal that is bolted to the knuckle. I haven't really looked yet and am waiting on parts- but I wouldn't think you would install a seal dry, was thinking of using some silicone grease here....?

Ordered in a couple remanned calipers- the 1995 V6 style and expected to see some casting marks- S13WC I think- nothing on these or on the old casting. Is this no marking thing common? I rough measured all piston's and they are the same at all four corners- I think the old 22re calipers were two different sizes.

 

I changed my first gen to late 2nd gen front brakes and my best recollection is that the caliper castings were marked as you say.
I'm pretty sure you'll have to change the rotors too, as the late 2nd gen ones are thicker than the earlier ones.
I had to grind the backing tin some to make the bigger calipers fit too.
Please post any corrections if you find something different.
Are you sure that someone before you did not already make some sort of changes.??

 

Mine is an early second gen- so probably not as much of a change as yours- rotors are 25mm thick.

 

I quickly looked up the caliper pistons and the 2nd gen uses all the same size, unlike the 1st gen; which does have two different sizes.. I did see that 89-91 used a different part number than 92-95.

 

Due to shipping costs- I had to settle for cardone remans, just didn't have the casting numbers I wanted to see. Truck has been parked for years- but when I was driving it the brakes were excellent, I did change out the calipers for the later type- straight bolt in. To be sure- there are some good mods for calipers, I just wasn't really interested in the surgery as the brakes don't warrant it.

I went into RockAuto- they do list OE calipers as the S12 type caliper, I ordered the S13 caliper to replace the sticky S13's.

My real concern was the seal install- even the FSM doesn't say much at all.

 

In my personal opinion, i think Cardone 's idea of "remanufactured" and mine differ significantly.

 

I definitely held my nose, I’m going to try repairing cores for spares.

 

They’re not hard to do. The pistons can be easily replaced if yours are pitted or damaged. Amayama has them at a good price if you don’t mind waiting a few weeks. Centric isn’t bad, either. The one thing missing in a Toyota OEM gasket/seal kit is the o-rings needed if you split the caliper in two. The aftermarket kits usually include those. I used a wheel cylinder hone to clean mine up, so separating the caliper was needed.
The one good thing to get is the Toyota grease used for brake cylinders. It’s called Rubber Grease. Part number 08887-01206. Awesome stuff.

 

Those oem kits are funny- I'm also doing a set of rear Honda problematic calipers that last a few years whether new or reman, had to buy oem kit plus aftermarket to put together a FULL kit- bit of a waste.
I ended up with Honda cores as I bought Raybestos NEW replacements which didn't need the cores shipped back- chinesium so we'll see how they last, was hoping for new Aisin when opening the box.

BTW I went through the lube question at BITOG, Toy rubber grease is good- but there are others more easily available for me- Raybestos silicone grease is what I have.

 

Needed 3 pistons and related split caliper seals for both calipers. Ordered two kits off of fleabay to cover parts needed. This is my first rebuild and I see these units sitting on the shelf for years until needed, Would prefer Toy seals but 1/ $$ 2/ incomplete seal set 3/ pistons are $$. The jap rubber is the best bar none tho.

https://www.frenkit.es/en/brake-cata...1005&ctipo=us_

 

Great video.