R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > E30 FAQ and DIY

Reply
 
Thread Tools
Old 10-12-2016, 01:39 AM   #31
Skarpa
Wrencher
 
Join Date: Jan 2013
Location: Finland
Posts: 229
Quote:
Originally Posted by monkey_boy View Post
Yeah, just PM me your email address. I've already sent the pics to several people.

I was hoping to hear from flyboyx so he could re-post them in the first post of this thread. Haven't heard from him yet. Maybe I can copy his text and repost with the pics.
That would be so awesome! I'm doing hydroboost as well and it would help a lot. PS. I'll also send my email if you can send the pics to me as well.
__________________
E30 "Armo" "330i"
Skarpa is offline   Reply With Quote
Old 10-12-2016, 03:12 AM   #32
george graves
I waste 90% of my day here and all I got was this stupid title
 
george graves's Avatar
 
Join Date: Oct 2003
Location: Seattle, WA
Posts: 19,114
Quote:
Originally Posted by monkey_boy View Post
Maybe I can copy his text and repost with the pics.
Yep - do it.
__________________
george graves is offline   Reply With Quote
Old 10-19-2016, 10:33 PM   #33
Skarpa
Wrencher
 
Join Date: Jan 2013
Location: Finland
Posts: 229
Quote:
Originally Posted by flyboyx View Post
I have been working on an S52 swap for the last few months. as an alternative to using the standard modified e21/rabbit/944 booster that most everyone uses in their cars these days, i elected to go with an option that gives me more braking power. this info is also on a thread in the 24v swap section, but i was thinking more of you could take advantage of it here.

i know...you are probably asking why i would want to install this on my car. well...i ask you, why the hell not? i have already modified a rabbit booster that i am sure would work fine. i just want more braking power. i have hydroboost on my diesel f350 daily driver and i love the system. i expect i will love it just as much on my bimmer.

on the right side of this photo are the brakes i am using on the front of my car.


a few months back, i picked up the system from an old e24.


everything was fine and dandy until i installed the engine.


i think it would work out fine if the engine were something other than m/s5x. there is no way around the conflict with these parts. the good news is that i read a thread a while back that you can use the hydroboost system of a 7 series e23. this is what i found at the just yard this week. if you are going to add hydroboost to your e30 with a 24v swap, it is going to have to be the booster from the early 7 series. notice how about a third of the booster is actually inset behind the firewall. this will get you the relief you need to clear the throttle body. the e23 is at the top, the e24 is below.


also worth noting in the photo above: the upper booster has an extra fitting between the rear port and the pressure hose. this is a restriction for applications with abs brakes. there is a little orifice with approximately a 1/64" hole drilled through. if you have abs and you plan for them to work, you will need this part. it is listed in real oem and priced somewhere around 25 bucks from the stealership.

an added benefit to going with the hydraulic brake syst is that the diameter of the master cylinder is much larger than the one from the e30. e30 on the left, hydroboost mc on the right for comparison.


here is a photo with the e23 booster installed. the intake boot and maf will pretty much fit with out conflict at this point. the rear orifice on the bottom of the intake boot has slight interference with the hydraulic line on the front of the master cylinder, but there won't be any issue connecting the hose.


i found a nice out the way place to mount the hydroboost reservoir. originally, i wanted to locate it on the driver side motor mounting bracket, but the top needs to be mounted above the brake booster. otherwise, the fluid could drain back and overflow.


the accumulator is going to be mounted below the booster on the driver side. i cut the mounting bracket off the e23 so it would be a little easiser to fabricate.

i went through the 20 or so power steering hoses that i have laying around in search of suitable ends for my project. using my angle grinder(with a thin cutting wheel), i ground off the metal swage collars and slid the ends out of the old hoses.





doing a little googling on line, i found http://www.discounthydraulichose.com they sell the R1 hydraulic hose needed for about a buck a foot. this is a 2500 psi hose. the working pressure of the system according to my bently manual is about 1400 psi max, so this hose will work nicely.


they also sell a crimp collar shell for about a buck each.


unfortunately, they don't sell banjo fittings. i talked to a salesman about it, but he said suitable suppliers are unavailable. i did a little searching and found a couple of aeroquip fittings in their catalog, but for most connections, you need some sort of elbow after the attachment. this is why i am reusing my old fittings. when the hydraulic parts arrive in the mail. i will just cut my hoses to length, assemble them and take them to my local hydraulic shop to get them crimped.


i have read a few threads on the forums with people complaining that the hydroboost system is unnecessarily complicated. i don't think so. you definitely have more hoses to run and you have to figure out how to locate the accumulator, but really, it isn't bad.

the reservoir has been mounted, it is a bit tight against the maf. i may move it a little later on.


here is a photo of the accumulator with the high pressure hose fittings mounted to it. that is the factory bracket from the e23 but turned upside down. on the hose fittings, i left part of the crimped collar where it attaches to the metal line because as you can see in the photo, those high pressure fittings don't have much of a barb on them. some of the newer fittings on the power steering pump don't have any barb at all. once i have the collars crimped on, i plan to put a couple of (tig) tack welds between this flange and the collar for good measure.


these are the fittings i came up with for the power steering rack and the ps pump


here is a photo of the e23 accumulator bracket with a notch ground out to fit the brace on the front strut tower. keep in mind that this will be welded to the frame up side down.


its a little hard to see in the crappy photo, but there is the up side down bracket welded low on the frame with the accumulator bolted on. the bracket is just below the bank of brake lines, just behind the motor mount bracket, and just in front of/and above the steering u-joint. the fuel lines and the carbon canister hose touch on the back side. there is about 2 or 3 inches of clearance to the master cylinder/hydro booster above(removed for clarity). the biggest reason for mounting it that low was that i felt i needed to stay away from the brake lines. i didn't want to weld on a bracket that had a cut out for those lines only to have the possibility of replacing one later.
Here's the pics rehosted. I don't guarantee that every pic is exactly in the original place but all the important ones are where they should.
__________________
E30 "Armo" "330i"
Skarpa is offline   Reply With Quote
Old 10-20-2016, 09:24 AM   #34
monkey_boy
Member
 
Join Date: Sep 2015
Location: Seattle, WA
Posts: 73
Nice! Thanks for doing that.
monkey_boy is offline   Reply With Quote
Old 11-08-2016, 04:00 PM   #35
butters
E30 Enthusiast
 
Join Date: Nov 2010
Location: SE PA
Posts: 1,171
Which clevis fork is used to connect the E30 pedal to the E23 booster? I'm about to install mine and it looks like the E30 clevis is too long based on my measurement of the stock setup before I sold it off.
butters is offline   Reply With Quote
Old 12-30-2016, 05:20 AM   #36
Skarpa
Wrencher
 
Join Date: Jan 2013
Location: Finland
Posts: 229
Quote:
Originally Posted by butters View Post
Which clevis fork is used to connect the E30 pedal to the E23 booster? I'm about to install mine and it looks like the E30 clevis is too long based on my measurement of the stock setup before I sold it off.
Did you figure it out yet? I haven't started the installation yet myself but will do it soonish once I actually have the booster from E23. So far I have two E28 boosters, one of which was supposed to be from an E23.
__________________
E30 "Armo" "330i"
Skarpa is offline   Reply With Quote
Old 12-30-2016, 08:46 AM   #37
butters
E30 Enthusiast
 
Join Date: Nov 2010
Location: SE PA
Posts: 1,171
Quote:
Originally Posted by Skarpa View Post
Did you figure it out yet? I haven't started the installation yet myself but will do it soonish once I actually have the booster from E23. So far I have two E28 boosters, one of which was supposed to be from an E23.
While I'm not 100% sure yet (because I had to order a new clevis pin), it looks like the E30 clevis installed on the E23 booster will work. I'll follow up after I install it.
butters is offline   Reply With Quote
Old 01-05-2017, 07:54 AM   #38
flyboyx
R3V OG
 
flyboyx's Avatar
 
Join Date: Sep 2008
Location: Houston, tx
Posts: 6,565
Quote:
Originally Posted by Skarpa View Post
Here's the pics rehosted. I don't guarantee that every pic is exactly in the original place but all the important ones are where they should.
holy shit! nice job! i still don't know how you did it but its awesome. the pics look accurate with the text.
__________________

Gigitty Gigitty!!!!

88 cabrio becoming alpina b6 3.5s transplanted s62
92 Mtech 2 cabrio alpinweiss 770 code
88 325ix coupe manual lachsilber/cardinal
88 325ix coupe manual diamondschwartz/natur
87 e30 m3 for parts lachsilber/cardinal(serial number 7)
12 135i M sport cabrio grey/black
flyboyx is offline   Reply With Quote
Old 01-05-2017, 07:59 AM   #39
Skarpa
Wrencher
 
Join Date: Jan 2013
Location: Finland
Posts: 229
Quote:
Originally Posted by flyboyx View Post
holy shit! nice job! i still don't know how you did it but its awesome. the pics look accurate with the text.
I got the pics from monkey_boy and uploaded them on my own photobucket account. Then I quoted you and copy pasted image links where I figured they should be.
__________________
E30 "Armo" "330i"

Last edited by Skarpa; 01-05-2017 at 11:28 AM.
Skarpa is offline   Reply With Quote
Old 01-05-2017, 10:48 AM   #40
flyboyx
R3V OG
 
flyboyx's Avatar
 
Join Date: Sep 2008
Location: Houston, tx
Posts: 6,565
it looks like there are a few still missing but that is at least 90% of it. i don't even have any of these anymore. i also had the schematic from realoem posted here so everyone knows where the lines route. i just now tried to add the diagram and wasn't able from my mac. here is the link:


http://www.realoem.com/bmw/enUS/show...diagId=34_0267
__________________

Gigitty Gigitty!!!!

88 cabrio becoming alpina b6 3.5s transplanted s62
92 Mtech 2 cabrio alpinweiss 770 code
88 325ix coupe manual lachsilber/cardinal
88 325ix coupe manual diamondschwartz/natur
87 e30 m3 for parts lachsilber/cardinal(serial number 7)
12 135i M sport cabrio grey/black
flyboyx is offline   Reply With Quote
Old 01-05-2017, 01:22 PM   #41
Skarpa
Wrencher
 
Join Date: Jan 2013
Location: Finland
Posts: 229
Has any of you tried swapping the master cylinder on hydroboost? I'm wondering if the shape is the same as in vacuum booster master cylinders. I'm switching to hydroboost to get more space for the S50B32 itb's and the airbox but I still have clearance issue with the master cylinder and would like to switch it to as short one as possible.
__________________
E30 "Armo" "330i"
Skarpa is offline   Reply With Quote
Old 01-05-2017, 06:56 PM   #42
flyboyx
R3V OG
 
flyboyx's Avatar
 
Join Date: Sep 2008
Location: Houston, tx
Posts: 6,565
depends.....bmw uses a lot of master cylinders that look like they are really short. they have diagonal bolt pattern that holds it to the booster. the problem with these cylinders is that they have about 2+ inches sticking out into the booster behind the flange.

basically all master cylinders are pretty much the same total length. my suggestion would be to offset the cylinder booster in some way that it clears your intake.

the reality is that even though i was successful with this system and it works great, i am not going to use any of this on my s62 swapped car.


there is a much better and simpler system out there and it doesn't even need to be mounted to the firewall to work.

ladies and gentleman......i give you the remote gm hydroboost system!

http://www.ebay.com/itm/TDS-Remote-H...1UM-yy&vxp=mtr

here is a pic below of what it looks like. it only needs two hoses instead of 7. it doesn't need to be mounted on the firewall. you can even mount it in the trunk if you want to.

instead of using the chevy truck master cylinder, i am going to use this part from a 1991 750i.
Attached Images
 
__________________

Gigitty Gigitty!!!!

88 cabrio becoming alpina b6 3.5s transplanted s62
92 Mtech 2 cabrio alpinweiss 770 code
88 325ix coupe manual lachsilber/cardinal
88 325ix coupe manual diamondschwartz/natur
87 e30 m3 for parts lachsilber/cardinal(serial number 7)
12 135i M sport cabrio grey/black
flyboyx is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 05:32 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC