Motive Power Bleeder - procedure
#31
King of Cool
Rennlist Member
Rennlist Member
i have motiv
i fill it with fluid and use it the way the instruction suggested.
i know many ppl use it with air, as pressure source only.
SO HERE IS THE QUESTION....
if you use it only as pressure source, why not just put somesort of adaptor and connect a bicycle pump (as pressure source) to the MC and pump away as if the bike pump is the motiv?
i fill it with fluid and use it the way the instruction suggested.
i know many ppl use it with air, as pressure source only.
SO HERE IS THE QUESTION....
if you use it only as pressure source, why not just put somesort of adaptor and connect a bicycle pump (as pressure source) to the MC and pump away as if the bike pump is the motiv?
Hmmm... I already have Motive but that sounds like it would be even better, or at least easier way to do it (no re-pumping the air and adding more brake fluid is easier because of quick connector)...
#33
Rennlist Member
And dont forget....
change the color of the fluid when you want to flush the system. This way when the clear, or blue appears at the calipers, you'll know you have flushed the system...dont forget the clutch system. I just have my satanic mechanic do the clutch and system flush...
At the track I use the motive with fluid in the Motive. If you use it just for an air pressure source, I have been told you are risking the possibility of forcing air into the system. We dont want that, do we?
Pressurizing dry is much neater, but I dont want to risk air into the system. I told trash the left over fresh fluid after a flush.
At the track I use the motive with fluid in the Motive. If you use it just for an air pressure source, I have been told you are risking the possibility of forcing air into the system. We dont want that, do we?
Pressurizing dry is much neater, but I dont want to risk air into the system. I told trash the left over fresh fluid after a flush.
#35
Rennlist Member
Thread Starter
What Graig said but you could of course use air compressor for this. They all should have pressure valve so just set that to 10 psi or so, get a extra brake fluid reservoir cap, install a air hose quick connector to it and you're all set.
Hmmm... I already have Motive but that sounds like it would be even better, or at least easier way to do it (no re-pumping the air and adding more brake fluid is easier because of quick connector)...
Hmmm... I already have Motive but that sounds like it would be even better, or at least easier way to do it (no re-pumping the air and adding more brake fluid is easier because of quick connector)...
I am for sure the dry method. What is funny is that when I bought mine I never read the instructions "shocker" and did not know that they recommended putting the fluid in the bottle, just made more sense to use it as a pressure device and limit the fluid to the brake system.
After reading all the posts I do now wonder if we are pushing old fluid out of the ABS. I will have to think about that.
#36
I don't know how the reservoir is set up on the new cars, but on my 87 the outlet for the clutch is higher than for the brakes. I didn't let it get low enough for air to get in the brake, but it was sucking it into the clutch.
I had to fill the Motive pump and start over. Finally got the air flushed out the slave.
It was the first (and last) time I'll ever try the dry method. Beware, it's easier than you might think to pull in air.
And, yep, I ended up using $34 of Motul in the process. But I would have used much less if I had started with it in the pump.
#37
Mr. Excitement
Rennlist Member
Rennlist Member
You can read my thread on the 911 forum. Two days ago I tried a quick little bleed using the dry method and ended up with no clutch.
I don't know how the reservoir is set up on the new cars, but on my 87 the outlet for the clutch is higher than for the brakes. I didn't let it get low enough for air to get in the brake, but it was sucking it into the clutch.
I had to fill the Motive pump and start over. Finally got the air flushed out the slave.
It was the first (and last) time I'll ever try the dry method. Beware, it's easier than you might think to pull in air.
And, yep, I ended up using $34 of Motul in the process. But I would have used much less if I had started with it in the pump.
I don't know how the reservoir is set up on the new cars, but on my 87 the outlet for the clutch is higher than for the brakes. I didn't let it get low enough for air to get in the brake, but it was sucking it into the clutch.
I had to fill the Motive pump and start over. Finally got the air flushed out the slave.
It was the first (and last) time I'll ever try the dry method. Beware, it's easier than you might think to pull in air.
And, yep, I ended up using $34 of Motul in the process. But I would have used much less if I had started with it in the pump.
BTW the clutch can be a royal bitch to clear the air out of. I get calls about having run 4 quarts through and still having a mushy pedal. Seems that the clutch has some high points that trap air.
I like the flush and mix method. Flush as much air out with fluid as you can then pump the clutch pedal 20 /30 times fast to foam the remaining air into the fluid. Flush some more as fast as you can. Repeat until you get a good pedal.
#38
I adapted my hose with connectors used for air lines, now I screw on the cap, attach the hose to the canister, pressurize and bleed. When it is time to refill, I just unplug the hose from the canister, unscrew the cap and refill, then cap on and hook up to the still pressurized container.
thanks for the inspiring ideas!
#39
Addict & Guru
Rennlist Member
Rennlist Member
Motive 1100 Master Cylinder Adapter if you don't want to reinvent the wheel ($21).
BTW, the inline regulators can be quite inaccurate especially at such a low pressure. Mine set at 10# was closer to 15#. Best to check it with an air gauge so you don't blow a seal.
BTW, the inline regulators can be quite inaccurate especially at such a low pressure. Mine set at 10# was closer to 15#. Best to check it with an air gauge so you don't blow a seal.
#40
Motive 1100 Master Cylinder Adapter if you don't want to reinvent the wheel ($21).
BTW, the inline regulators can be quite inaccurate especially at such a low pressure. Mine set at 10# was closer to 15#. Best to check it with an air gauge so you don't blow a seal.
https://www.amazon.com/dp/B000Q6UHQK..._ccunBbK62CKET
BTW, the inline regulators can be quite inaccurate especially at such a low pressure. Mine set at 10# was closer to 15#. Best to check it with an air gauge so you don't blow a seal.
https://www.amazon.com/dp/B000Q6UHQK..._ccunBbK62CKET
the 1100 adaptor works with Porsche 991 ?
#41
Addict & Guru
Rennlist Member
Rennlist Member
Originally Posted by TsaiCo
thanks~
the 1100 adaptor works with Porsche 991 ?
the 1100 adaptor works with Porsche 991 ?
Works fine with my (981) GT4.
#42
#45
Originally Posted by TsaiCo
I'M GONNA DO THIS TOO...!!
switching between moto and car application would be easier for me...
I can't remember the exact model of connectors and I'm not at home, but the connectors are similar to these
https://www.usplastic.com/mobile/sea...em&keyword=Apc