While you're in there...HPDE track prep

[JayG]

I agree that EBC Yellow are not the ultimate track pad, but they do preform fairly well. Much depends on the track and your driving.

Maytag is correct, you will cook almost any pads before boiling 600, unless its old and has a lot of moisture in it. I used 600 for a couple of years tracking and never had any issues. I would flush each year and bleed before every track weekend. 660 is good for more than just 1 weekend, at least 2 or 3.

I did eventually get the vibration Racer Boy mentioned with Yellows, but it was after about 20 sessions at a faster track. I did finally switch to Hawk DTC-60 and loved them.

On brake lines, IIRC, Porsche factory ones are braided under the rubber. Unless you have really old or damaged brake lines, you should not be having a problem

[maytag]

Originally Posted by JayG

Maytag is correct, you will cook almost any pads before boiling 600, unless its old and has a lot of moisture in it. I used 600 for a couple of years tracking and never had any issues. I would flush each year and bleed before every track weekend. 660 is good for more than just 1 weekend, at least 2 or 3.

Caveat here, that I've purchased 660 and have it on the shelf, but I haven't ever used it because everything I read steers me away from needing it.
The issue with 660 is that it has a lower] wet boiling point than the 600. (600 is 216°c, compared to 660's 205°c). Dry is higher, but wet is lower.
I already bleed the 600 before every track weekend, and flush a couple of times per season. Obviously this is required because of the hygroscopic nature of brake fluid. Heat cycling exacerbates this. So with a LOWER wet boiling point in the 660 I'll need to bleed & flush MORE frequently than I do with the 600.
I've only boiled 600 once (which is why I went to a more frequent bleed / flush interval). As long as that's the case, I don't know why I'd want to change to the 660, creating more work for myself :dance:

Of course YMMV.

[JayG]

Originally Posted by maytag

Caveat here, that I've purchased 660 and have it on the shelf, but I haven't ever used it because everything I read steers me away from needing it.
The issue with 660 is that it has a lower] wet boiling point than the 600. (600 is 216°c, compared to 660's 205°c). Dry is higher, but wet is lower.
I already bleed the 600 before every track weekend, and flush a couple of times per season. Obviously this is required because of the hygroscopic nature of brake fluid. Heat cycling exacerbates this. So with a LOWER wet boiling point in the 660 I'll need to bleed & flush MORE frequently than I do with the 600.
I've only boiled 600 once (which is why I went to a more frequent bleed / flush interval). As long as that's the case, I don't know why I'd want to change to the 660, creating more work for myself :dance:

Of course YMMV.

Yea, what he said