View Full Version : Brakes: Another idea for power brakes

Dan White
08-14-2018, 08:33 AM
I saw this on ebay and I think it might be another way to add power brakes to Studes and others. These are used on Lexus hybrid SUVs. I don't see any connection to Antilock, just 12V. Might even be able to do it under the floor. Would need 12V and under floor would need remote reservoir.

https://www.ebay.com/itm/2007-2011-LEXUS-GS450-GS450h-BRAKE-MASTER-CYLINDER-UNIT-OEM-LOT337/123126614204?fits=Make%3ALexus&hash=item1caaeb08bc%3Ag%3AiLgAAOSwD5pa9bgW%3Asc%3AFedExHomeDelivery%2119707%21US %21-1&_sacat=0&_nkw=lexus+450H+master+cylinder&_from=R40&rt=nc&_trksid=p2047675.m570.l1312.R1.TR11.TRC2.A0.H0.XLexus.TRS1

Bordeaux Daytona
08-14-2018, 09:56 AM
I was looking on alldata and it looks like that cylinder thing below the master cylinder is called a brake stroke simulator and it plugs into an abs/skid control module so it probably won't work without it.

Paul Keller
08-25-2018, 01:22 PM
One of the large "Internet/Mail Order" brake system suppliers advertised an electric booster for around $1,000 - And, no I do not recall which supplier (last year it was advertised in many of the car magazines).


Edsel G. Tattooer
08-25-2018, 01:51 PM
Here is a quick search for a electric brake booster for much cheaper from many sources.
The expensive one must be from Speedway they seem to have one for like $1300


08-25-2018, 05:10 PM
These are not brake boosters, they are vacume pumps that are used to provide adequate vacume for a vacume brake booster.

Edsel G. Tattooer
08-25-2018, 05:35 PM
Not all are.
Here is the one Mentioned above


Mike Van Veghten
08-25-2018, 05:36 PM
A better idea...just use the proper sized master cylinder.

I've driven two and am building another Stude (brand has no bearing) with either disc-drum, or disc-disc, and used no big heavy, space wasting, ugly power booster. The disc-drum car was pretty much a normal stopping car, while the disc-disc car is a two toe stopping car.
The floor mounted pedal length is just right, and I assume that the hanging pedals are very close in length to having a good lever arm length.

Do a little homework and save money and space, just get the right sized master cylinder for the calipers you are using.