DOT 4, 5.1, or 5, New brakes in race car. Options

[motorvated]

Just upgraded to 911 suspension and brakes and ready to fill with brake fluid. Car will be raced first with 1.8 L four, then 215 c.i. Aluminum V-8. Since the system is almost all empty of fluid, now is the time to consider switching to DOT 5 silicone based brake fluid. Any suggestions or recommendations.

Thanks,

Mike S.

[brant]

You will need high end like the motul with the v8

But not the 1.8
Start with fresh and clean calipers and cheap fluid. If bleeding an open system (rebuilt calipers/ lines) go through a quart of something cheap to get the air/bleeding done

The stock valve or even after market adjustables are hard to bleed without patience or bench bleeding, hammers, trips around the block, or a pressure bleed. You'll go through a lot of fluid

Then full flush to something like ate

You won't over heat good stock brakes with race pads at your hp and weight

You will with the v8/track experience
Not while your getting addict... I mean started.
Run good pads like the kfp's. you can get brake fade from over heating pads also.

Remember a small bore racing 914 is all about momentum. The fastest ones don't use their brakes too often.