DA prop valve

[drpnswap23]

ive seen that the DA prop valve work on cbs is it a direct fit? or ?

[Jon]

It is a direct fit... kinda. The problem is the mounting bracket is wrong, here's a picture to explain.

DA 4040 on the left, OEM CB7 3030 on the right



Some people don't bother swapping the bracket and just stick it on and that works just fine. And the reason they don't bother swapping the bracket is that you have to take the prop valve apart to swap the bracket, which then you run the risk of it leaking, either right away or later down the road.


IF you want to swap the bracket, here is how I did mine.

First thing is to remove the tamper proof torx screw (you'll need a T30H torx bit).


Step 1: Insert the OEM prop valve into a bench vise to hold it together because once the screws are removed the prop valve comes apart and all of the little pieces and parts will try to fall out or fly out, so be careful!
Step 2: Remove the screws then slowly release it from the vise.
Step 3: Repeat step one with the DA prop valve, and do NOT remove it from the vise, keep it clamped in.
Step 4: With the DA prop valve still clamped in the vice, position the OEM CB7 bracket into the correct location and install it.
Step 4a: IF the DA prop valve needs to be adjusted in the vise so that the OEM bracket can be installed use extreme caution. Slowly release the vise and make certain that nothing falls out of the prop valve. Check and make sure the mating surfaces are clean and the springs and washers are all in their correct place, then reinsert the DA prop valve into the vice and compress the two halves together, then install the bracket.

Inside are two springs (a large one and a small one), two washers, and a rubber seal.

[drpnswap23]

thanks man i guess ill be picking on up today

[Jon]

No problem.

And I forgot to add it's been about eight months and my prop valve hasn't started leaking from swapping the bracket. Fingers are still crossed though...

[drpnswap23]

huh. i did the rear disc swp awhile ago the only thing i didnt get new was the prop valve for 93 rear disc but will the 90 w/ drums prop valve be good enough or should i swap it out for one from a rear disc cb?

[TheNextEpisode]

Informative post, loops.

[8ball]

Informative post, loops.

i concurr

[Jon]

huh. i did the rear disc swp awhile ago the only thing i didnt get new was the prop valve for 93 rear disc but will the 90 w/ drums prop valve be good enough or should i swap it out for one from a rear disc cb?

The stock 3030 prop valve will work just fine. I noticed a slight difference in braking power when I went to the 4040, seemed like it wasn't braking with just the front anymore, kinda more evenly.
Also you will need to get the prop valve off of an Integra or from a car originally with rear discs that does not have ABS.

Informative post, loops.

i concurr

I try my best.