TKim103

just change it once a year for street driving

change it after every HPDE/Track/Autocross event

s2kBryan916

Spitfire S.

The only thing I can understand that is different between the honda tech post and mine is that he actually defines the "friction material" with a carbon fiber based material.
I didnt know exactly what the material was made of, so I just called it what I did.
Plus he used bigger words than I did in his post.


No offense taken, cheers to adding/clarifying my post!

Also in the exploded view of the transmission shaft you have the top and bottom of the two rings labeled as 1 have the material on them.

SpitfireS

s2kBryan916 Posted on Jul 30 2008, 10:06 PM
Hmmm..
What's the "knife edge" you mentioned then?
The exploded view is from a MY00-03 ESM, what are the "knife edges" ?

s2kBryan916

The knife edges are in the same exact spot where the friction material would be. Having actual photos of the two would be best rather than relying on a drawn picture if the parts.

Edit: Here is a link to a prelude forum where it has a clear photo of the differences between the two.
carbon on the left, knife edge on the right.
http://www.preludeonline.com/f28/carbon-sy...-inside-161631/

SpitfireS

One picture can say more than a thousand words.

The second, larger pic, on the Prelude forum is even better.

tinkfist

[QUOTE=s2kBryan916,Jul 29 2008, 12:53 AM]With that said, I wonder how much different a UOA on an ap1 would be compared to ap2.
I wonder if you will see much of the "friction material" in the fluid?

slipstream444

Wow (!) - I would certainly go with a much more frequent change interval. The more crap in the oil (especially over 5 microns in size) the more rapidly damage is done. MTF is cheap - especially when the transmission only holds two quarts. Consider how many more dinosaurs you kill in gas! Even at $8.50 a quart for Amsoil MTF, you're only spending a half a tank's worth of gas to change it.
I stick by changing mine at the same time I change engine oil. I don't go any longer than two oil changes.

Supra-holic

Also, anyone who is considering getting an analysis, request a particle count. The element ppm counts are usually in the 5-8 micron range, at least the lab I visited.

There has been examples where high iron levels have trend down but the component still failed because as Slip said, larger particles are going to cause more damage. So particle counting is important.

If this "friction material" is non-metalic then the element analysis will not pick this up.

Here is some basic information for anyone who wants to learn more about interpretation of the results.

http://www.wearcheck.com/literature/techdoc/WZA019.pdf