I recently got several PMs inquiring, so here is the write-up with picture:
Purpose: to install a brake proportioning valve for the rear when converting to disk brakes, adapting Toyota brake fittings to US proportioning valve fittings
Parameters: re-use existing Toyota hard lines and adapt to US standard fittings without the need for cutting the lines and/or re-flaring
Approach: Basically, we went from metric to National Pipe Thread (which is what my Wilwood prop valve came with for 3/16 standard brake line thickness, but you want to connect to Toyota brake line metric) via AN, meaning each side of the prop valve has an adaptor NPT to AN, and the AN fittings adapt to metric. Depending on your space, you might want to think about getting the NPT to AN fittings angled (like 90 degrees; you can see the extra angled connector in the picture); race car shops will have those or can source them for you. So from the Master cylinder [10mm - AN] connects to [AN - NPT] into the prop. valve, the out of the prop. valve [NPT - AN] connects to [AN - 10mm]; anything in [] is an adapter fitting; the blue ones are the AN type. You just need to make sure what thread is on your prop. valve. We put teflon tape on the threads, pipe sealant works as well.
Parts needed: the local race shop I went to sourced one of them from a different supplier, but they were able to do so with these numbers; also available via Summit website (very small pictures):
two of the 1/8 NPT male to -3AN female adapters (EAR 916103 ERL stands for Earl's)
one of male 10mm to male -3AN (EAR 592032 ERL) this goes into the master cylinder
one of 10mm female inverted flare to -3AN male (EAR 989538 Earl's) this connects the prop. valve to the brake line.
Optional: 1) appropriate angled conenctors; 2) bracket to mount the proportioning valve to (we did not see the need, this is pretty solid).
Cost: approximately $8 each.
Potential problems: Depending on space and arrangement, the prop. valve may make removal of the windshield washer fluid reservoir difficult.
Picture:
Purpose: to install a brake proportioning valve for the rear when converting to disk brakes, adapting Toyota brake fittings to US proportioning valve fittings
Parameters: re-use existing Toyota hard lines and adapt to US standard fittings without the need for cutting the lines and/or re-flaring
Approach: Basically, we went from metric to National Pipe Thread (which is what my Wilwood prop valve came with for 3/16 standard brake line thickness, but you want to connect to Toyota brake line metric) via AN, meaning each side of the prop valve has an adaptor NPT to AN, and the AN fittings adapt to metric. Depending on your space, you might want to think about getting the NPT to AN fittings angled (like 90 degrees; you can see the extra angled connector in the picture); race car shops will have those or can source them for you. So from the Master cylinder [10mm - AN] connects to [AN - NPT] into the prop. valve, the out of the prop. valve [NPT - AN] connects to [AN - 10mm]; anything in [] is an adapter fitting; the blue ones are the AN type. You just need to make sure what thread is on your prop. valve. We put teflon tape on the threads, pipe sealant works as well.
Parts needed: the local race shop I went to sourced one of them from a different supplier, but they were able to do so with these numbers; also available via Summit website (very small pictures):
two of the 1/8 NPT male to -3AN female adapters (EAR 916103 ERL stands for Earl's)
one of male 10mm to male -3AN (EAR 592032 ERL) this goes into the master cylinder
one of 10mm female inverted flare to -3AN male (EAR 989538 Earl's) this connects the prop. valve to the brake line.
Optional: 1) appropriate angled conenctors; 2) bracket to mount the proportioning valve to (we did not see the need, this is pretty solid).
Cost: approximately $8 each.
Potential problems: Depending on space and arrangement, the prop. valve may make removal of the windshield washer fluid reservoir difficult.
Picture:
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