Metering/ Proportioning Valve tuturial

[twisted_galant]

I did my disc swap today and also changed my proportioning valve. The Mitsubishi Part Number is MB699551. This fits an 8G with a 3.0 V6 w/o ABS.

Tools needed:
10mm line wrench
12mm socket and ratchet
PB Blaster

The valve is located on the right firewall, behind the alternator on an I4


Spray all connections with PB this will help ease the loosening and help prevent damage to your brake lines.

Using the line wrench disconnect all six lines from the valve body. Make sure you leave the valve connected to the firewall. Again this reduces stress on the other brake lines.


After all six lines are disconnected you can remove the valve body from the firewall.



Put your replacement valve on the firewall and hand tighten the bolt fastening it to the firewall. You want to leave a little bit of motion in the valve body till the lines are all reconnected to help prevent the threads from stripping. Once you get the threads on all six lines started (make sure they are installed in the same location) you can tighten the fastening bolt the rest of the way. After the body is secure you can finish tightening your lines.


After you install the valve you must bleed the brake system (ALL FOUR WHEELS) to ensure proper performance of the braking system.

I hope this helps any of you who are undertaking this task. If anyone has questions feel free to PM me.

THIS IS INTENDED AS A TUTURIAL ONLY. I AM NOT RESPONSIBLE FOR ANY DAMAGE YOU MAY CAUSE TO YOUR VEHICLE. DO NOT ATTEMPT WITHOUT THE PROPER KNOWLEDGE TO COMPLETE.

[mko]

Thank you!!

[ShiZnitH]

Usefull guide :) Gonna share this with my norwegian fellas :)

[cleazy123]

I contemplated on wether or not there was really going to be a difference between the two p.v.'s and upon just completing this swap I can say there definately is, read this thread a couple times over the past year and since then ordered the part and for anyone who was wondering what a side by side pic looked like....here you go... As u can tell the oulets on the v-6 (right)are definately bigger then the v-4(left)



4g64----------------------------------------------------------6g72

[twisted_galant]

I didn't even think about looking at the physical difference on them. I just knew that I would be chewing through front brakes if I didn't change the valve when I swapped the drums out.

[w/oarctic7g]

Good job, thanks. The valve looks like it would be a perfect fit on a 7g as well. Can mods please place there also?

[mrg7243]

Good job, thanks. The valve looks like it would be a perfect fit on a 7g as well. Can mods please place there also?

It will as I have taken a prop valve off a 1g, and 2g eclipse along with a 3g and they are all the same

[master_visionary]

I pulled mine off of a 1g 3000GT non turbo much different

For my 7g

[mrg7243]

Also if you have brembos you either want to stay stock or get an evo prop valve

[kolio]

Good job, thanks. The valve looks like it would be a perfect fit on a 7g as well. Can mods please place there also?

the 8G ones don't work for ours. you need to rebend the lines to use it. just like you have too for the 2G one


i'm installing a 1G 4g63 N/A w/o abs and rear disk proportioning valve in the next week. it is a direct swap.

[mko]

8g prop valves are exactly the same as 7g and 1g bro. No bending required.

What i have seen is that 2G have two style prop valves. One is the same as 7g/8g style and its usually seen on GST and GSX and the second type is the same as on 3000gt and I find it mostly on 2g GS with rear discs.

ok I guess pics would do better:

1. 2g GS and 3000gt (non ABS)



2. 1g/2g/3g/Stratus w/o ABS fits both 7g and 8g



and All model ABS valve just for reference

[kolio]

8g prop valves are exactly the same as 7g and 1g bro. No bending required.

What i have seen is that 2G have two style prop valves. One is the same as 7g/8g style and its usually seen on GST and GSX and the second type is the same as on 3000gt and I find it mostly on 2g GS with rear discs.

ok I guess pics would do better:

1. 2g GS and 3000gt (non ABS)



2. 1g/2g/3g/Stratus w/o ABS fits both 7g and 8g



and All model ABS valve just for reference

thats why. thanks for clearing it up. i forgot that the abs have the front 2 capped off

[master_visionary]

If you use one off of a 3000gt don't have to bend the lines too much

Just cut off the excess

Reuse the fittings

Reflare the lines

[qnz]

I tried removing my brake lines to the proportioning valve today. No luck. How did you guys manage to get leverage down there?

[underated]

are you using crow foot wrenches for the lines? you can get a lot lore leverage without worrying about stripping the fitting.

[Galantman03]

Also if you have brembos you either want to stay stock or get an evo prop valve

Can anybody verify this?

[master_visionary]

I wouldn't think you would need an EVO 8 pv but I would suggest at least a rear disk pv from a n/t 3000gt that's what I have not disc swapped yet but from what I understand the rear drum prop valves bias pressure more forward where the rear disc ones split it more evenly

[Galantman03]

I understand that, I was curious why he said if we have brembo s we don't need a pv one from a v6

[mrg7243]

Let me try to find the post about it give me a few

[mrg7243]

I wouldn't think you would need an EVO 8 pv but I would suggest at least a rear disk pv from a n/t 3000gt that's what I have not disc swapped yet but from what I understand the rear drum prop valves bias pressure more forward where the rear disc ones split it more evenly

Also remeber that that car is differently weight biased than a 7g.