Zcargarage Big Brake Kit

[Mike]

Nice kit.  Please keep us posted on the progress.  What did they provide for a brake proportioning valve?

 

[duffymahoney]

No proportioning valve needed. If you have a rear prop valve like me. It has to be gutted. From looks both front and rear calipers are identical. They have different cast numbers. So there must be a difference. 

 

Hopefully finalizing fronts and rears tomorrow. Then waiting on the e brake caliper and pads for the whole kit. 

[Jason240z]

what make are the calipers? Mine are 286mm and clear 14" wheels with ease.  295 will fit under 14"

Edited June 1, 2019 by Jason240z

[duffymahoney]

I’m blown away by the level of fit and finish and engineering that went into the kit. 

[duffymahoney]

1 minute ago, Jason240z said:

what make are the calipers? Mine are 286mm and clear 14" wheels with ease.  295 will fit under 14"

Stoptech 

[duffymahoney]

rear wheels clear with ease. Now time to wait for the rest of the parts to come. 

[duffymahoney]

Done for now. 

[Jason240z]

Do you know why they went trailing caliper, then leading for the rear? Is that a sticker on the caliper? Do you have to run a second caliper at the rear for parking or is it built in like the classic vw design?

[AK260]

Done for now. 

I have garage envy now!!!! [emoji106]

[grannyknot]

16 hours ago, duffymahoney said:

No proportioning valve needed. If you have a rear prop valve like me. It has to be gutted. From looks both front and rear calipers are identical. They have different cast numbers. So there must be a difference. 

So if the brake system was engineered from the ground up for our cars then perhaps Stoptech has used constrictor valves in the rear calipers to reduce the flow to get the balance right for front to back pressure.  Can't see too many serious track guys liking that situation but maybe ZCG offers a different option for track cars.

[Jason240z]

2 hours ago, grannyknot said:

So if the brake system was engineered from the ground up for our cars then perhaps Stoptech has used constrictor valves in the rear calipers to reduce the flow to get the balance right for front to back pressure.  Can't see too many serious track guys liking that situation but maybe ZCG offers a different option for track cars.

I'd put money that they're off the shelf calipers, otherwise could you imagine the costs involved?

[duffymahoney]

Well I’m assuming stop tech has massive amounts of resources (foundry, their own tooling etc in china..). I was told ground up design. But I would guess off the shelf calipers? Only thing that leads me to think they aren’t is the fact that I had to wait for a batch to come from overseas. Since there were no calipers in the US. 

 

The kit gets used on track cars. It requires the stock MC. I bet it’s a exact ratio of front to rear bias. Factoring in caliper size piston size, then pad size then mc pressure front and rear. You could always use a adjustable rear if you wanted.