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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Hydroboost mounting plate

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Hydroboost mounting plate - Page 5 Empty Re: Hydroboost mounting plate

Post  xschop Fri Jun 13, 2014 2:57 pm

Also, what is the center to center mount hole dimension on the mustang master cylinder? Other MC's could be modded to fit.
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Post  zeusrotty Fri Jun 13, 2014 4:33 pm

It isnt really the master that is going to make it tight. It is the actual booster unit, if that is what you are implying.

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Post  xschop Sat Jun 14, 2014 7:00 am

No, I meant getting different size MCs to mount. I have a spare C5 Vette MC at the shop I could adapt.
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Post  zeusrotty Sat Jun 14, 2014 11:31 pm

What would be the reasoning for a different master? Reason I'm asking is because "while I'm in there"

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Post  xschop Sun Jun 15, 2014 9:40 am

Anything larger than the factory MC and preferably with M10 x 1.0 bubble flare ports would be ideal.
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Post  Lemming Mon Jun 16, 2014 7:31 am

xschop wrote:Also, what is the center to center mount hole dimension on the mustang master cylinder? Other MC's could be modded to fit.

Rob,

I'll try to get you the dimensions tonight.  I've been planning on calling Wilwood to find out my options on MC's.

EDIT: 3.25"
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Post  zeusrotty Tue Jun 17, 2014 1:39 am

I've made some progress. I've decided to mount the plate to the unit and then I will mount the attached unit and plate to the firewall all at once. It really seems like getting the bolts on the bottom close to the booster would be a nightmare with the motor in. I'm also not running spacers so it makes it all that much more difficult. Here's what I did.  I I also tapped the existing arm and used an extension. I did recess the plate Where the hex bolts are.
Hydroboost mounting plate - Page 5 <a href=Hydroboost mounting plate - Page 5 29BBB25C-79DC-4337-B1ED-CDA40242DD4A_zpsordtj7mp" />
Hydroboost mounting plate - Page 5 A74191E0-B861-4927-A63E-FFB09F749039_zpsovndqi3d
Hydroboost mounting plate - Page 5 D71F4A3D-0511-4B69-8A87-A9ADEF764379_zpsjc8zedes
Hydroboost mounting plate - Page 5 782E1C73-33FC-4690-9FA2-AD4E047D2C83_zpsf8nnpug0
]

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Post  zeusrotty Tue Jun 17, 2014 2:00 am

So I'm just going to stack the back two coils onto the front two coils to make this work. Anyone know where I can get two longer plug wires?

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Post  Lemming Tue Jun 17, 2014 6:32 am

zeusrotty wrote:So I'm just going to stack the back two coils onto the front two coils to make this work. Anyone know where I can get two longer plug wires?  

I bought a kit that you make your own lengths, nylon spacers for stacking came from McMaster.

I've run into my first glitch, I bought the rebuilt hydroboost and it does not come with the output pushrod, spacer, or spring. Looking for a source for those items.
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Post  xschop Tue Jun 17, 2014 6:49 am

The Vette MC is 3.40" c2c with 10.5mm thru-holes....
What is the dia. of the mustang MC where it fits into hydroboost unit?
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Post  zeusrotty Tue Jun 17, 2014 5:32 pm

I will be installing the booster Thursday night so I will update with pics then.

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Post  948 Wed Jun 18, 2014 12:27 pm

Here are the adapters I made to add power brakes back to my 951, using the Ford Mustang hydro-boost.
I put high strength captive head studs in my firewall plate, which are pressed in flush and don't rotate. I attached my firewall plate on its own, the HB and its stock mounting plate can be easily installed and removed from my firewall plate with the engine in place.
Also, I made an adapter and new push-rod so I could continue to use the stock 951 MC.

Hydroboost mounting plate - Page 5 Img_2010

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Hydroboost mounting plate - Page 5 Img_2012

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Post  Lemming Wed Jun 18, 2014 12:41 pm

948 wrote:Here are the adapters I made to add power brakes back to my 951, using the Ford Mustang hydro-boost.
I put high strength captive head studs in my firewall plate, which are pressed in flush and don't rotate. I attached my firewall plate on its own, the HB and its stock mounting plate can be easily installed and removed from my firewall plate with the engine in place.
Also, I made an adapter and new push-rod so I could continue to use the stock 951 MC.


Nicely done!
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Post  zeusrotty Wed Jun 18, 2014 1:55 pm

I keep hearing about using the different mc's but what is the benefit?  Can you have those mc adapters made? Also could you take pictures of your lines and how you are running them?

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Post  948 Wed Jun 18, 2014 3:53 pm

zeusrotty wrote:I keep hearing about using the different mc's but what is the benefit?  Can you have those mc adapters made?  Also could you take pictures of your lines and how you are running them?
I think the only benefit is that you don't have to make an adapter plate and push-rod to reuse the stock MC  Laughing 
Given the unique 951 MC piston sizes, presumably selected for the 944/Brembo combination, I felt that it was better to use the stock MC.
I designed all of these items in CAD so they can easily be duplicated; i am not personally interested in making and selling brake components because of the potential liability. I did some rough stress calcs to be sure the materials are suitable though.
Which lines were you referring to, the MC or HB?
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Post  zeusrotty Wed Jun 18, 2014 3:55 pm

I would like to see both. Can you shoot me the cad file on the plate? Or would you be willing to make one for me?

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Post  phlip Thu Jun 19, 2014 5:59 pm

I would also be interested in the files for the adapter plates and especially
the adapter and pushrod for the stock master cylinder. If this is possible please let me know.
I don't think my post count will let me PM yet but I'll give you my email address.
I have a friend at a fab shop that owes me a favor and can easily reproduce them.
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Post  zeusrotty Mon Jun 23, 2014 12:41 pm

http://www.tallonhydraulics.com/store/index.php?main_page=product_info&products_id=70

Looks like they have everything we need for ford hydroboost.

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Post  Admin Mon Jun 23, 2014 12:51 pm

They have everything you need , except hose fittings that fit the ford hydro booster, hoses that fit our car (although they have the pieces) and and the adapter plates for our cars! I have talked with them about offering a kit for us, they weren't interested.

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Post  zeusrotty Mon Jun 23, 2014 1:12 pm

Huh... Ill bet if someone like me called them they could piece together something to spec. Eric, did you try any other companies? Also, quick question... Can I run the hose for the rack to the return line straight out and up by the firewall to the booster? Or do I really need to come to the front and up and back. It seems like it would be easier to just do it straight up.

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Post  haroldk Mon Jun 23, 2014 2:19 pm

I got the fittings for my Ford booster from Talon, but mine is from a 1996 Mustang, so it has SAE hardware, not metric.
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Post  Admin Mon Jun 23, 2014 3:04 pm

If you go straight up you will need to make 100% sure that it is clear of any heat source.

Har, can you post some pictures of yours? I'd like to see an alternative to what we have been using. We have to buy and cut a brand new hose on every conversion because no one offers a fitting for one part of the booster.

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Post  zeusrotty Mon Jun 23, 2014 3:16 pm

Im on the phone with http://powerbrakeservice.net/ and they offer all of the fittings along with a line kit. The only thing is if you don't use the block on the side of the booster, you will have to drill and tap it. They are telling me they can do the 12mm inlet for the high pressure side of the rack. Eric you should give them a call. 714-330-5286

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Post  zeusrotty Mon Jun 23, 2014 3:38 pm

does anyone know the thread pitch on the 944 high pressure banjo bolt for the rack? Nevermind, for future reference the thread pitch on the banjo for the porsche rack is 1.5


Last edited by zeusrotty on Mon Jun 23, 2014 4:39 pm; edited 1 time in total

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Post  haroldk Mon Jun 23, 2014 4:09 pm

Admin wrote:Har, can you post some pictures of yours? I'd like to see an alternative to what we have been using. We have to buy and cut a brand new hose on every conversion because no one offers a fitting for one part of the booster.

What do you need pictures of? I just used the ORB to -6AN fittings they have for the pressure lines and used the funky banjo fitting with a barb welded onto it for the return line. When I looked, Talon had a -6 adapter for the return on mine, but it looked like it was going to be a pain in the ass to use, so we just made our own.
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