So all the conclusions I made in the last post on May 16th are all wrong, air is not a good substitute for brake fluid when testing
The Wilwood prop valve acted exactly as you would assume it would with each turn cutting off a bit more pressure until the minimum was reached.
- the first configuration was 15/16" MC straight through to the calipers with NO prop valve and I assume no vacuum booster assist as the engine was not running. 1200 psi pushing as hard as I could.
- the second configuration was with the stock 240z prop valve installed, 600 psi pushing as hard as I could.
- the third was with the Wilwood 260-12627 prop valve installed and the stock prop valve removed, you’ll notice that with the Wilwood prop valve installed with the valve wide open there is a 100 psi decrease in the total pressure down to 1100 psi from 1200 in the 1st video.
wide open, 1100psi
1 turn closed, 1050psi
2 turns 950psi
3 turns 950psi
4 turns 875psi
5 turns 750psi
6 turns 750psi
7 turns 650psi
8 turns 600psi
9 turns 600psi
10 turns 575psi
10.5 turns 575psi
I took it out for a run with the prop valve turned all the way closed to 575psi and I that’s just about right.
I made some videos of the 3 tests and they are here if interested, https://forums.hybridz.org/topic/131534-wilwood-proportioning-valve/?tab=comments#comment-1221616
With the brakes mostly sorted and I should mention the braking action is fantastic, 2-3x better than the Toyota/Maxima combo, I started working on the fault codes? There are a few ghost codes for things the ECU doesn't control anymore and will get a round to scrubbing those off but the Bank 1 O2 sensor is reading bad but it's brand new.
I'm going to install the used O2 sensor the engine came with to see if that makes a difference and the engine keeps wanting to stall when I come to a stop, that's only real problem at the moment.
My on-going hunt for more power is now over, the few times I have stepped on it, it has scared the crap out of me, the acceleration is insane in a car this light. Love it.
First pic, just a little hint of what's under the hood.
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