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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Hydro boost install

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Hydro boost install

Post  Admin on Sun Sep 20, 2009 7:43 pm

I installed this setup on Kent's car for him. (with his help)
It uses a 2000 Ford Mustang hydro unit and master cylinder. We just had to make a plate to adapt it to the fire wall and move the coil packs to the strut tower.




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Re: Hydro boost install

Post  msmoorenburg on Wed Sep 23, 2009 7:20 am

Well how was the test drive
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Re: Hydro boost install

Post  Admin on Wed Sep 23, 2009 7:49 pm

It seem to work good, I did not go far, the donor hydro is leaking fluid into the interior of the car. We are replacing it with a rebuilt one this time and I will post the results after the first drive.....

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Re: Hydro boost install

Post  ghostcloak on Tue Nov 10, 2009 2:00 pm

Status?
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Re: Hydro boost install

Post  Vorsche944 on Tue Nov 10, 2009 3:57 pm

I 'll let Eric fill in the details, as he drives my car more than I do. But in summary, after a few hours of being the first at this configuration, we have it working pretty nice. It will stop on a dime and put your face in the windshield and if you look at the install, it looks like it fits right in the car. The only real workaround we had was moving the coil packs to the strut tower. However, we think in hind site, if we had converted the coil packs and fuel rails to the truck configuration, we might not have had to do this, but in reality, the move to the tower was pretty simple. Also we threaded the push rod to the brake pedal, we use the original push rod hole.

We will be doing a write up for the technical papers on how to do this and the part numbers. Eric has the master mounting plate design and can make those.

Overall config: 87 Turbo with Ford Hydroboost and GM Turn-1 PS pump.

Ford GT/Cobra Hydroboost from a 2000 GT and Master Cylinder (on ebay or rebuilt)
Ford Hydroboost lines to the Hydrobiist with GM Connectors from the PS Pump (stock GM pump or we used a turn-one) we have the ford HB requirements
Ran this through a PS cooler - JEGS or Summit no big cost
Installed an inline filter -
Remote Clutch Reservoir -

Reason we liked this set up is it brought the brakes power system up to current technology and was very cost effective.
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Re: Hydro boost install

Post  Admin on Tue Nov 10, 2009 7:31 pm

The hydro boost work very well, I will be doing this to my car very shortly. Very Happy

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Re: Hydro boost install

Post  v8carreragts on Tue Nov 10, 2009 7:52 pm

Just FYI, the Ford HB is a bendix unit. Basically identacle to the GM unit. A few cars have been using this for some time. Turbobob has it on his car and TonyG has it on his car. I originally set this up on my car but the BMW/ATE unit fits so much better.

This is the Bendix Hydroboost II (what the Ford is and the others use is Hydroboost I) Notice it doesn't have the accumulator external.

[img][/img]

This is the BMW/ATE unit.

[img]URL=http://img194.imageshack.us/i/53400093.jpg/][/URL][/img]
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Re: Hydro boost install

Post  Admin on Tue Nov 10, 2009 8:21 pm

We were looking at the BMW setup and realized we were running out of room under the hood for stuff and being the ford unit was a complete system it fit nice in the area that we had.

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Re: Hydro boost install

Post  v8carreragts on Tue Nov 10, 2009 9:37 pm

I understand. Just keep in mind the Hydroboost II. It doesn't have the accumulator can on it like the Hydroboost I has. It can fit where the Hydroboost I cannot. The can is an accumulator that stores pressure to give you a couple of boosted stops if the engine dies. The Hydroboost II has the accumulator inside of the piston.
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Re: Hydro boost install

Post  vt951 on Wed Nov 11, 2009 9:56 am

Hey guys, first off, great forum you have here. I am just starting on a conversion of my 86 951. Planning on going with an L33 (the 5.3 vortec with aluminum block and z06 heads).

Anyway, most things seem pretty straightforward, but I'm still a bit hung up on the brake boosting stuff... if someone can answer a few basic questions, I think that would help a lot.

1. To the OP, would it have been possible for you to mount the Ford hydroboost unit upside down, so that the accumulator "can" wouldn't interfere with the coil pack? Or, would it have interfered with something else if you did that? I saw a thread on LS1Tech where someone mounted an Astro Van hydroboost upside down to hide the lines better (but that was in a Typhoon with a lot of room around the firewall).

2. I plan to run manual steering. If I'm just using the PS pump and lines for hydroboost, do I still need a PS reservoir? If so, will the reservoir in the stock location work, or does it need to be mounted higher than the hydroboost/accumulator? I was planning to shave the PS reservoir bracket if possible.

3. Again to the OP, why did you add the extra reservoir for clutch fluid?

4. Regarding bmw's hydroboost, if you use that, you still have to mount an accumulator ball somewhere, right? I know the hydroboost unit itself fits really nice, but I don't like having all of the extra lines and the accumulator ball in sight. Has anyone tried mounting the ball in the battery box (assuming you relocate the battery to the spare tire well or something)?

5. What cars did hydroboost II come on? Seems like that is the best of all worlds. No external can to worry about and no remote accumulator or extra lines.

Sorry for so many questions at once, but I've been saving them up!
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Re: Hydro boost install

Post  Admin on Wed Nov 11, 2009 10:23 am

Let me say first off, Welcome to our forum............

Now to the answers,

1. You can mount it upside down, although with the ls1 conversion you would not gain anything, the coil packs are in the way all the way to the end of the master cylinder.

2. If you have a pump you have to have some sort of resevor. It does not have to be higher than the hydrboost but it does need to be higher than the pump.

3. The extra clutch resevior was installed because I used the Mustang master cylinder and it does not have the extra line coming off of it for the master cylinder like the Porsche does.

4.Yes, you can mount it there if you would like.

5.The hydro boost that we use come off of a 2000 Mustang. You need the hydro boost, the master cylinder and the two pressure lines to make it an easy install.

I will be doing a write up on the install here shortly. I will also make availible the mounting base for the hydro Booost.

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Re: Hydro boost install

Post  vt951 on Wed Nov 11, 2009 10:43 am

Thanks for your reply. Couple more questions:

1. Will I have the same problem with an L33? I think in one of your posts you mentioned that the truck coil pack setup may leave more room for the MC.

5. I guess that was more of a question for v8carreragts... he mentioned "Hydroboost II". Curious where to get it and how much it costs.

Thanks!
Alan


Admin wrote:Let me say first off, Welcome to our forum............

Now to the answers,

1. You can mount it upside down, although with the ls1 conversion you would not gain anything, the coil packs are in the way all the way to the end of the master cylinder.

2. If you have a pump you have to have some sort of resevor. It does not have to be higher than the hydrboost but it does need to be higher than the pump.

3. The extra clutch resevior was installed because I used the Mustang master cylinder and it does not have the extra line coming off of it for the master cylinder like the Porsche does.

4.Yes, you can mount it there if you would like.

5.The hydro boost that we use come off of a 2000 Mustang. You need the hydro boost, the master cylinder and the two pressure lines to make it an easy install.

I will be doing a write up on the install here shortly. I will also make availible the mounting base for the hydro Booost.
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Re: Hydro boost install

Post  944-LT1 on Wed Nov 11, 2009 11:19 am

I will also make availible the mounting base for the hydro Booost.

When you do, you should design it with "clocking" ability! Clocking that baby to the right would be cool. Very Happy
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Re: Hydro boost install

Post  Vorsche944 on Wed Nov 11, 2009 1:14 pm

On the truck setup, there was another thread here where someone had done that. The truck coil packs mount higher and you need to use the truck fuel rails to match up as the stock one will be in the way. we are ASSUMING that should work better for this install.

Question for you, why would you give up power steering. Running from the GM PS pump to the Porsche is pretty straight forward.
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Re: Hydro boost install

Post  Admin on Wed Nov 11, 2009 4:08 pm

944-LT1 wrote:
I will also make availible the mounting base for the hydro Booost.

When you do, you should design it with "clocking" ability! Clocking that baby to the right would be cool. Very Happy

Clocking it is easy, it just has one huge nut that holds it on. (see pics)




But you would have to make a mount to rotate the master cylinder. I did make it set a little to one side by binding the mounting plate.

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Re: Hydro boost install

Post  v8carreragts on Wed Nov 11, 2009 4:33 pm

Somewhere t home i have an application guide for Hydroboosts. I will need to look tonight. The HBII I think would be more suited for our cars because of the size.

The hydroboost can be used without power steering. Turbo bob has that set-up.

The BMW unit is very compact at the firewall but has the regulator and accumulator assembly. It isn't all that big but you need a place for it. You are basically adding two more hoses that connect the two parts (HB and accumulator.regulator) The accumulator/regulator can be mounted in any position so it can be tucked in anywhere you can get the hoses to fit.

The Bendix Hydroboost is relatively easy to mount. I have a set-up that i had on my car.
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Re: Hydro boost install

Post  v8carreragts on Wed Nov 11, 2009 6:38 pm

The HB II is from 81-85 full size Buicks and 80-85 Caddy. Rock auto has rebuilts for $141 including core charge.
Here are some pictures. The page out of the catalog shows the two side by side and you can see that the HB II is identical to the HB I but doesn't have the external accumulator.

[img][/img]
[img][/img]
[img][/img]
[img][/img]
[img][/img]
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Re: Hydro boost install

Post  Vorsche944 on Wed Nov 11, 2009 7:23 pm

That looks like either will work. Does the rock Auto include the Master cylinder?

The same issue exists for the LS1 is the coil packs. The master Cylinder conflicts with them.
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Re: Hydro boost install

Post  vt951 on Wed Nov 11, 2009 10:37 pm

Vorsche944 wrote:On the truck setup, there was another thread here where someone had done that. The truck coil packs mount higher and you need to use the truck fuel rails to match up as the stock one will be in the way. we are ASSUMING that should work better for this install.

Question for you, why would you give up power steering. Running from the GM PS pump to the Porsche is pretty straight forward.


I'm putting in a manual rack, mainly to free up extra space under the oil pan. This should (I hear) allow me to mount the cross member directly to the frame of the car rather than using spacers. Also, one less thing to worry about failing and leaking. I've driven 951's with manual steering and it feels good to me. The ratio wasn't so much slower that I noticed it.

My main motivation for doing the v8 swap is simplicity. My goal is a reliable track car, which can do double duty as a fun and fast street car, and be competitive at an occasional autocross. The fact that I might actually achieve those goals without breaking the bank (hopefully) is a testament to the 944 platform and chevy v8 powerplants. Looking forward to getting it done!
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Re: Hydro boost install

Post  Bluemach1 on Tue Oct 05, 2010 5:50 pm

Hey Eric,
I thought that this might be a good topic to resurrect since you just finished the install on Docwyte's car.

Are you going to make a mounting plate for this install available to us?

Can you please give a little info on plumbing this with the Turn One PS pump and power steering?

Any hints, tips or tricks that you have learned now that you have done this a few times?


Thanks!

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Re: Hydro boost install

Post  Porch on Wed Oct 06, 2010 12:27 pm

Ya really. I've got an '04 Mustang HB sitting in the garage that will get installed over the winter. And pictures/tips/tricks would be appreciated. I might even buy a plate just to save myself the hassle (and you seem to have a nice way of cutting metal!).
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Re: Hydro boost install

Post  Arthropraxis on Sat Oct 16, 2010 1:34 pm

With hydroboost does the pedal have to be drilled .75 in higher like the manual brakes?
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Re: Hydro boost install

Post  Porch on Sun Oct 17, 2010 1:27 pm

I think you could try it either way, but i'm going to start with mine in the stock position. On a setup like the hydroboost, with the pedal re-drilled, i think it will be too much of an "on-off" switch. Modulation is important!

I'm also thinking i'm going to try to get the pedal to stay down a little further (so i can heel-toe). Should just require adjusting the stop and moving the stoplight switch.
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Re: Hydro boost install

Post  Admin on Sun Oct 17, 2010 4:21 pm

No need to re drill it, the stock location works perfect.

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Re: Hydro boost install

Post  Wild Bill on Tue Oct 19, 2010 7:21 pm

Stock location is fine, I'm running stock Porsche pump and stock Porsche Master Cyl.
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