944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Sourcing BMW "H31" Hydroboost Parts

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Sourcing BMW "H31" Hydroboost Parts Empty Sourcing BMW "H31" Hydroboost Parts

Post  jpkinerk on Fri Sep 27, 2013 8:52 am

Hey guys,

So as many have mentioned, you can occasionally find a complete H31 hydroboost system on ebay and such, but after months of searching I decided to piece together my own. Here is a breakdown of where I sourced the parts from and how much. I'll be using this with the Lexus front calipers and Turbo rears. Also, I did not include the fluid resevoir. I'm attempting to use the f-body pump's resevoir. I've been told there are some issues, but I'm going to give it a shot. Anyway, hope this is helpful.


“H31” Hydroboost System

Diagrams of System:

http://bmwe32.masscom.net/maxf_website/booster.htm

http://bmw8.us/Brake%20Booster%20Rebuild.htm

Accumulator i.e. "Bomb" $108:
(note, this is new part, which is advised because of issues with used ones commnly failing)

http://www.schmiedmann.com/7_series/E32/Spare_parts_brakes-chassi-suspenssion_etc/Brake_parts/page6.htm#8306

Hydraulic Booster $150:
(used)

http://www.data.bmrparts.com/bmwparts/BMW_BRAKE/BMW_34331161772_DO_NOT_SELL_USED.html

Brake Pressure Regulator $300:
(used)

http://www.data.bmrparts.com/bmwparts/BMW_BRAKE/BMW_750iL_4DR_E32_BRAKE_DS_Regulator_73_34331159752.html

Master Cylinder

*use stock 944 master cylinder (bolts directly to booster)


So there ya have it. Not including the cost of lines/fittings I'm at $558, not bad I feel like since a refurb DS regulator can cost that much on its own. Lastly, a question. Where can I find the correct booster to brake pedal arm for this application? Is this a fabbed piece? Thanks all.

JP
jpkinerk
jpkinerk

Posts : 171
Join date : 2013-02-13

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Sourcing BMW "H31" Hydroboost Parts Empty Re: Sourcing BMW "H31" Hydroboost Parts

Post  docwyte on Fri Sep 27, 2013 11:42 am

For me the entire point of using the BMW system is so you can use the Porsche master cylinder and not screw up your brake bias. When you move away from the factory Porsche calipers, you screw up the brake bias.

At that point you might as well use the much easier and cheaper to find Ford Mustang hydroboost...

docwyte

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