I've got a 95 z28 that im getting ready to drop the engine out of. I am planning on redoing the brakes while ive got everything out of the way. I am going to do away with the abs and was hoping to run and adjustable proportining valve with a line lock for the front. The valve i got from wilwood only has one in and one out in it. my thinking was i could either just adjust the rear down so it will work with the front or i could get a second valve and rund one for the front and one for the rear. Does anyone have any experience with this? Is my car going to plummet into a ravine the first time i attempt to stop? I think in theory that either way should work but i dont know if unregulated pressure from the master cylinder would do some dammage to the calipars or anything like that.

Thanks for any help

Brendan
383 as soon as ive got the Benjamins

 

The proportioning valve goes in the rear brake circuit, and only needs one in, one out. The purpose of the proportioning valve is to be able to reduce pressure to the rear brakes so they don't lock up before the fronts. Several people have found the valve not to be necessary when deleting the ABS. There rear brakes tend to lock up first because there is very little load on the rear brakes due to the cars normal front wheel weight bias, and the added weight transfer to the front during a stop.

 

So when the lines come out of the master cylinder they are already somewhat balanced in pressure? I was of the understanding that the pressure in the lines leaving the master cylinder were the same. And it is ok to run the front line straight from the master cylinder to the linelock then straight to the wheels?

 

That's how I did it. Just use the linelock solenoid as a tee. One line in from the master cylinder and two lines out. One to each brake caliper.

 

I tee'd the front and did not bother with a prop valve whan I went !abs.

I can't lock the rears if I tried so a prop valve was nor required. But I did need a reducer to attach the rear brake line as the line to the rear is a larger diameter than the line to the master cyl. (or at least it was on my '94)