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Thread: Which Way to Go??
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08-03-2022 #1Registered User
- Join Date
- Dec 2020
- Posts
- 24
Which Way to Go??
Acquired a car that was already built utilizing Baer Brakes (I know Wilwood sponsors this sub forum).
Car has an LS9 Crate Engine - Baer Disks - Baer Remaster Master Cylinder.
Issue is the car has a ‘generic’ brass proportioning valve and lots of messy coiled hard lines under the Brake Booster / MC. I would like to swap out the ‘generic’ proportioning valve with the nice Baer Remaster P-Valve than mounts directly underneath the MC and has pre-fabbed hard lines for a clean installation.
But … In looking things over, I see I have a 1-1/8” Master Cylinder - which I understand is ‘generally’ recommended for Hydroboost Systems. Most folks recommend a 1” MC for Vacuum Booster (NON-Hydro) Power Brakes.
I will say, at times, the brake pedal feels a little ‘soft’ and I occasionally need to lift the brake pedal with my toe in order to get a full return of the pedal to de-activate the brake light switch.
One acquaintance suggested stepping down to the 15/16” Master and matching Prop valve and ditching the Brake Booster all together.
On the other hand, if I’ve got a nice vacuum booster - and stepping down to a 1” MC and Prop Valve will clean things up and give me a firmer pedal - maybe that’s the way to go?
Last option is get the nice, matching 1-1/8” Proportioning Valve from Baer so I have the correct diameter if I ever want to go Hydroboost.
Right now, I am leaning toward getting the 1” MC and P-Valve, getting rid of the generic brass P-valve and messy coiled hard lines and calling it a day.
Any thoughts / experience greatly appreciated.
Thank You!
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08-04-2022 #2Registered User- Join Date
- Sep 2017
- Posts
- 41
What brakes are on the car? That will go a long way towards determining what bore master cylinder to use. A smaller diameter master cylinder will not give a firmer pedal, but will give you more line pressure at the calipers with the same force input on the pedal.
Todd Z.
08-11-2022 #3Registered User- Join Date
- Dec 2020
- Posts
- 24
Thank you for the reply. I’ve got to do a better job of checking in on this forum - or turn on email notifications so I don’t miss responses. I don’t have a part #, but this is Baer’s disc kit with the larger slotted and drilled rotors - they completely fill the front wheels and I’m running 18s all around.
Got the car over to a really good local shop for an inspection and test drive. Very likely still a bit of air in the lines. We are going 1” MC with matching prop valve, keeping the vacuum booster, cleaning up the lines, and bleeding. I will report back.