anyone have a brake booster off car they can weigh? from what car? anyone already find a lighter booster already? seems the booster could be made from alloy or plastic but cant find one like that. did find an alloy hydro booster from bmw that looks like it might save weight if retrofit to car. should be more powerful as well. also looks as though turbo cars came with dual diaphram booster and non-turbo a single diaphram. looking for weights of either. thanks.


http://www.ebay.com/itm/Cardone-52-7500-Power-Brake-Booster-Reman-A-1-Hydraulic-w-o-Master-Cylinder-/261380838601?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ABMW&hash=item3cdb8314c9&vxp=mtr

so no one has a booster off their car they can weigh?

I c what your trying to do , but u could consider a brake booster delete kit .save even more weight , just need to apply more leg pressure

subscribed for a better option than the delete. i dont mind losing my ABS,but for a daily driver i have a problem with one leg becoming larger than the other.

If you have a stiff aftermarket clutch, then it will balance out.

I promise you if they could be made from plastic they already would be.

There are aluminum boosters you can find in higher end Mercs and BWMs like S and 7 series, maybe even E and 5 series too.... but I'm 100% sure they exist.

Hope that helps

I found continental started making alloy boosters about a year ago. so I emailed them to see if I could track down what cars are getting them, or if I could buy a single unit. here is the response I got

hey, I think your right. looks like from 2004-2010 bmw 5 and 6 series had alloy boosters. got approximate quote it weighs 4lbs. it a double diaphragm booster. I think 190e from 83-94 used an aluminum booster as well. single diaphragm. no weight yet. finally getting somewhere with this. now if someone could get actual weight of stock booster.

I don't know how feasible it would be to make work, but I did notice the booster on the new cla45 amg looks like it would be lightweight. You might look into the boosters for the w203 chassis c class Mercedes.

I just canned my booster after shelf sitting for 2 years!

I'm interested in hydroboost
There is a lot of great options for ps pumps but I'd never have the ability to figure out fitting that..

It looks like the supply line comes from the rack in hydroboost set ups so u only need an extra return line.

94 doesn't that seem like the way to go?

I didn't think about hydroboost. Seems like an interesting idea for folks with larger cams as well.

I found this on youtube. Conversions seem somewhat straightforward.

I fear the hydroboost may be too sensitive. although there are certainly ways to reduce leverage ratios. stopping huge truck tires is different than stopping lightweight performance wheels. single diaphragm boosters add up to 900psi to line pressure. double diaphragm can add as much as 1500psi. I would guess mitsu booster is around 1100-1200. the hydro setup adds 2000psi line pressure. for sure it would be the way to go on A/T setup. eliminating the need for electric vacuum pump.