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Old 10-17-2013, 06:16 PM   #1
intensifi

 
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DOT 4 brake fluid full conversion plan

After reading all the posts I have come up with a plan to do the full conversion (including ABS reservoir) to DOT 4 as I upgrade to the Brembos.

The concept revolves around activating the ABS system to purge its reservoir while the existing V6 rotors, pads and calipers are still installed.

Steps:

1) Install new SS master cylinder pre-bled and filled with DOT 4.
2) Bleed four corners while V6 brakes are still installed, adding more DOT 4 to the reservoir as needed.

At this point, I'll have a mix of DOT3 & DOT4 in the system.

3) Drive the car and make at least 6 hard stops where the ABS activates to purge the DOT3 out of its reservoir.
4) Add more DOT4 to reservoir as needed.
5) Install Brembos and new lines, but not disconnecting old line/caliper until new caliper and new line are mounted and ready to go. The idea is to minimize DOT4 fluid loss.
6) Bleed new lines adding more DOT4 to reservoir as needed.

Does this make sense?

I figure I might as well activate the ABS on the old brake components instead of the new ones.
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Old 10-18-2013, 09:10 AM   #2
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Makes sense and would probably work.

For #5, I'll say that I was surprised at how little fluid came out when I took my calipers off. Obviously you'll want to hang them up so the rather than just drop down but don't expect all your fluid to come rushing out once you crack the first line open. At least mine didn't do that at all. Just little came out when I took my lines off. Still, it's not a bad idea to leave them hooked to the old caliper for as long as you can if you have the room. It's probably going to start getting crowded in there unless you just let the V6 caliper hang by the brake line out of the way.

With that all being said I think you could probably skip the process of bleeding your brakes with the V6 calipers first. Just do #3 after you have the Brembos on. Bleed your brakes and then go jam on them to try to activate the ABS. Then come back and bleed some more out just for grins. I'll tell you that I didn't bother worrying about my ABS when I went to DOT 4. A trip to the road course and it wasn't an issue at all. DOT 3 & 4 will mix and there isn't going to be a whole lot from your ABS in there.

IMO, unless you just want to be super anal about squeezing out all the DOT 3 at once then I would just do the Brembo/DOT4 conversion. Drive it around for a week or two hitting the brakes hard to get the fluid through the ABS and then come back later and do some touch up bleeding. When I talked to JDP Motorsports about this situation with ABS they basically told me not to worry and just send bleed some fresh DOT 4 through the brake after a couple track or auto-x runs and eventually you'll get DOT 4 in the ABS.

Surely you're going to be upgrading to stainless brake lines and Motul 600 fluid while you're switching your calipers?
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Old 10-18-2013, 10:27 AM   #3
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I like super anal.

Sh1t!

That didn't come out right either.



I understand what you are doing and you are correct that it will be a thorough flush of fluids. You'll use a bit more fluid. So what. I say go for it
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Old 10-18-2013, 11:31 AM   #4
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Quote:
Originally Posted by caverman View Post
Surely you're going to be upgrading to stainless brake lines and Motul 600 fluid while you're switching your calipers?
Thanks for the input!

Yes to the stainless (Goodridge).

No to the Motul. I got a great deal on the Castrol SRF.
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Old 10-18-2013, 11:33 AM   #5
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Originally Posted by JusticePete View Post
I like super anal.

Sh1t!

That didn't come out right either.



I understand what you are doing and you are correct that it will be a thorough flush of fluids. You'll use a bit more fluid. So what. I say go for it
You are a funny guy.

Maybe you have missed your calling. Get out of the suspension business! Standup comedy is calling.
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Old 10-18-2013, 01:47 PM   #6
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Originally Posted by JusticePete View Post
I like super anal.

Sh1t!

That didn't come out right either.



I understand what you are doing and you are correct that it will be a thorough flush of fluids. You'll use a bit more fluid. So what. I say go for it
Different strokes for different folks. If you like super anal shit I'll support you.
I didn't think there was a proper emoticon for that until I found "I'm a pony, I'm a pony!!"
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Old 10-18-2013, 02:29 PM   #7
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Quote:
Originally Posted by intensifi View Post
Thanks for the input!

Yes to the stainless (Goodridge).

No to the Motul. I got a great deal on the Castrol SRF.
Where did you get it from?
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Old 10-18-2013, 04:39 PM   #8
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Different strokes for different folks. If you like super anal shit I'll support you.
I didn't think there was a proper emoticon for that until I found "I'm a pony, I'm a pony!!"
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Old 10-18-2013, 04:41 PM   #9
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Where did you get it from?
I need to work a deal with SRF. I deserve a royalty Maybe i can broker a deal for track use only RED SRF brake fluid.
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Old 10-18-2013, 04:55 PM   #10
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Originally Posted by JusticePete View Post
I need to work a deal with SRF. I deserve a royalty Maybe i can broker a deal for track use only RED SRF brake fluid.
Any idea why the blue color went extinct?
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Old 10-18-2013, 05:01 PM   #11
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Originally Posted by intensifi View Post
Any idea why the blue color went extinct?
Federal law. Brake fluid must be clear.
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Old 10-18-2013, 05:08 PM   #12
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Federal law. Brake fluid must be clear.
Is there a valid engineering reason?
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Old 10-18-2013, 05:13 PM   #13
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Is there a valid engineering reason?
Consumer protection from stupidity.
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Old 10-18-2013, 06:40 PM   #14
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I need to work a deal with SRF. I deserve a royalty Maybe i can broker a deal for track use only RED SRF brake fluid.
Do it!
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