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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power steering pump

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Re: power steering pump

Post by 87-944S on Sat Aug 22, 2009 4:02 pm

ABS Power Brake, in CA. [You must be registered and logged in to see this link.] They have been really great to deal with.

Mike
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Cheap 944 P/S Pump Solution?

Post by gt1scca on Sat Aug 22, 2009 10:35 pm

Looka' what I found...

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/////////////////////////////////////////////////////////////////////
944 / 968 Power Steering Pump Seal Kit #944-PSPSK
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

(Here the kit is for even less @ Rennbay...)

//////////////////////////////////////////////////////////////////////
944 / 968 Power Steering Pump Seal Kit #[PUMPSEAL944]
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\


May be da bom , may be da pig ...

[ Fab a bracket, drill a pulley, and...BAM!!!
Cheap pump, pressures match, etc., ...]


scratch Hmmmm....

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busted it open

Post by xschop on Sun Aug 23, 2009 1:23 am

I dissected the stock 944 pump early today. First thing I thought is "they charge 200+ dollars for this thing?!"
I figured about 3-4 dollars in O-rings and the batman shaped O-rings can be handmade also BTW. But the real kicker of the whole idea is that the stock 944 crank pulley bell can be welded to the stock 944 pump pulley and it matches the 5-groove Chevy serpentine..... Cool

I do have a dumb question.....Looking at the front of the pump, which way does the pulley rotate on the 944 engine CW or CCW? scratch
Would affect placement options.
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Re: power steering pump

Post by gt1scca on Sun Aug 23, 2009 1:58 pm

xschop wrote:...But the real kicker of the whole idea is that the stock 944 crank pulley bell can be welded to the stock 944 pump pulley and it matches the 5-groove Chevy serpentine....
I do have a dumb question...Looking at the front of the pump, which way does the pulley rotate on the 944 engine CW or CCW?

25 Years, and it was this easy? Razz

Belt rotation is clockwise [from Porsche manual]...

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[ Looks like... bom ! ]

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Re: power steering pump

Post by m73m95 on Sun Aug 23, 2009 6:29 pm

87-944S wrote:ABS Power Brake, in CA. [You must be registered and logged in to see this link.] They have been really great to deal with.

Mike

Which master cylinder did you use? They seem to only carry GM stuff. Does one model bolt up to our car?

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Re: power steering pump

Post by 87-944S on Mon Aug 24, 2009 9:34 pm

I'm using 10-56-9, link to the kit [You must be registered and logged in to see this link.]

It's a big honking M/C, it came in today. Polished aluminum, nice under hood bling Smile I had them supply it with a shaft long enough to reach the Porsche pedal, with a 10mm heim joint for connection to the pedal. I did some test fitting tonight, it should work out well. I won't know if I will need to add a bias valve for front to rear bias until I get it all squared away and can drive the car. Hopefully I'll have in installed real soon.

Mike
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Re: power steering pump

Post by Vorsche944 on Tue Sep 01, 2009 9:19 pm

Update for everyone

Ok here is the path we are going down.

PS changed out to a Turn one unit and yes I spent a few extra dollars on the nice pulley, $225 + $60
Steering rack replaced with rebuild one. added in PS filter and new boots.
Rack $320 from Zims [You must be registered and logged in to see this link.]
inline transmission filter from Filter Kit, Inline filter Magnefine 3/8 lines $20.95 M010CBK


We are also putting in a Hydroboost. Using a unit from 99 Ford Mustang.
Eric has made the mounting plate
The 944 MC tank fits the Ford MC (update, fits but does not handle the pressure, oops)
The 944 lines fitting fit the Ford MC
The Ford HB brake pedal shaft works off a ball joint which gives some leeway in the alignment
Eric welded on a threaded shaft to the Ford unit to fit the 944 brake clasp
We moved the coil packs to the strut tower to make room, to tight a fit.
So far it looks like a good fit

We will be posting pictures soon, Hopefully this week, we have tried to document this from the get go to help others.

Let me summarize, I take pictures and hang out under the dash and Eric does all the hard work. Though he let me use the electric grinder, but he made me redo my work.
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stock PS pump is a go

Post by xschop on Sat Sep 05, 2009 9:26 pm

Finally got the numbers right to stick the stock 944 PS pump between the block and frame rail. Depending on how low budget you want to go, you can weld the 944 5-grove crankshaft serp belt pulley right to the 944 PS pulley and fire it up. I'm doing a 1-piece billet pulley and curious if anyone would have a good idea on the conversion diameter calculation? I dont have the opposite pulley from the 944 to calculate the difference.

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Last edited by xschop on Sun Mar 27, 2011 9:28 am; edited 1 time in total
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need to make a pulley

Post by xschop on Thu Oct 08, 2009 2:00 pm

I am going to make a cut to fit the stock 944 PS pump to the bracket tomorrow night, Then I can figure the pulley offset for the custom billet one I will make. And I will also post how to mod the stock 944 pulley easily by welding the 944 v-belt pully to the 944 crank pulley that is 5-groove and matches the serpentine belt of the LS engines....
Since no-one answered my last reply, I will just make the Pully Diameter the same as the stock 944 PS pump pulley Dia. when I do them from billet.
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Re: power steering pump

Post by 944v8inDFW on Thu Oct 08, 2009 2:39 pm

The finish diameter of the billet pulley if needed should match the ratio of the 944

Ratio of the 944 system = pump pulley diameter (X) divided by crank pulley (Z) = ratio 1

X / Z= r1

Ratio error correction we need to know the ls1 crank pulley diameter expressed in L

New ratio for correction is

X / L =r2

X for ratio 2 can be replaced with X2 (possible pulley from 944)

r1 / r2 = correction factor

If the ratios are within about 3-5% of each other there will be no need for a billet pulley. Over around 8% bad things could happen, but no worse than running the LS1 pump against the 944 rack.
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Re: power steering pump

Post by 944v8inDFW on Thu Oct 08, 2009 6:48 pm

corrected some verbage to be more clear / accurate
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like a glove

Post by xschop on Thu Oct 08, 2009 7:01 pm

I set it up on the block and Bling Bling. I have seen a few pulleys that are 5 grooved and 5.25 Diameter off the shelf.
I am hunting down a pulley that can be bought off the shelf and modified for the Porsche 3-bolt PS shaft pattern. Getting the offset correct is the kicker. It's storming outside and I'm done for the night Shocked

For reference for the DIY crew before I make the final cut. The 944 PS pump exit tube is on bottom and the high pressure outlet exits the frame rail side beautifully. Here's what the bracket should be cut to look like if you are making yours out of steel plate. I think 1/4 mild steel plate with 1/2" worth of washers and you've got yourself a nice inexpensive bracket that will make Renegade go back to the drawing board with their tails tucked Razz
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Last edited by xschop on Sun Mar 27, 2011 9:20 am; edited 1 time in total
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944 PS pulley Diameter at the crank?

Post by xschop on Mon Oct 12, 2009 10:07 am

????????
Nobody has one laying around?

Just for info... if the bracket is mounted in the upper location, the max dia. pulley you can put on is 4.5" which is the stock 944 PS pulley Dia. The frame rail is the limiting factor....

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If you mount it on the bottom, a whopping 8.5" pulley can be installed no problem. frame rail also limiting factor.....FYI

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The kicker

Post by xschop on Mon Oct 12, 2009 10:17 am

With the 3/4" thick bracket, a 0.94" spacer is needed to mount the 5.5" diameter 944 6-grove belt pulley right to the 944 PS face. Very Happy
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Re: power steering pump

Post by Bluemach1 on Mon Oct 12, 2009 3:01 pm

You, Sir, are a very crafty man! I need to get a list of your fabrications.

Lets see, by my count..

PS bracket
Uprights
BH adapter
Big brakes
Motor Mounts

Wasnt there a bumpsteer, spindle that you came up with also?

You need to get all of your creations listed in one place so that those of us that are about to begin can just send our shopping list to you!

Thanks for all you work!

Ted

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Re: power steering pump

Post by xschop on Mon Oct 12, 2009 5:13 pm

Now if I can only get a small keg cooler in the back Very Happy

Seriously, I am rethinking the Alternator location now that I see how much room is on the driver's side. The Dims I posted for the Alt. bracket on the passenger's side work like a charm with .94" spacers between the bracket and passenger head, but the headlight motor is in the way when the truck alt. is brought out to match the truck crank 6 groove. If I can make it work. I will design a 1-piece bracket to put the inexpensive truck alternator and 944 PS pump both on the driver's side. I am going to figure a way to flip the tensioner upside-down and make it work.
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Re: power steering pump

Post by gt1scca on Mon Oct 12, 2009 8:55 pm

xschop wrote:...Nobody has one laying around?
944 PS V-belt / crank "drive" pulley (fairly rusted...) O.D. = ~108 MM (4.25")

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100% ?

Post by xschop on Mon Oct 12, 2009 9:06 pm

Strange because the PS pulley is 4.25"

If that is the case, it is a 1:1 ratio
The 5.3l 6 groove crank pulley is 7.625" diameter.
Meaning the PS pump has to be located on the bottom driver's to allow a 7.625" pulley on it to match the ratio.....
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Re: power steering pump

Post by gt1scca on Mon Oct 12, 2009 9:24 pm

xschop wrote:100% ?
clown

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hmm

Post by xschop on Mon Oct 12, 2009 9:28 pm

I found a 7" 6 groove that can be modded, not sure what the hell it came off of tho.....old S10 swap perhaps.
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Truck Crank Pulley to LS1 Crank Pulley difference

Post by xschop on Thu Nov 19, 2009 4:25 am

On the 5.3l ....................the front Block face to the very middle of the 1st belt groove on the crank pulley is 121mm

Anyone care to mic their LS engines. I need this info to make the 1-piece bracket and pulley for the LS engines wanting to stick on the 944 Power steering pump and truck alternator.....
I imagine they may even be different between the 5.3l alloy blocks that cam out of different vehicles. I Don't Know. I placed a straight edge across the face of the pulley and mic'd to the block face then subtracted the pulley face to center of 1st groove of the accessory belt drive.
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Last edited by xschop on Sun Mar 27, 2011 9:26 am; edited 1 time in total
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double check

Post by xschop on Fri Nov 20, 2009 11:11 am

Can anyone confirm these dims on their F-body or Vette pulleys?
When I get home I will double check the Truck dimension (timing cover to ? edge) and how it converts to the 121mm dim I posted for the block face to 1'st groove center on the accessory belt....

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Re: power steering pump

Post by Bluemach1 on Fri Nov 20, 2009 2:12 pm

I should be able to get this for you tomorrow. I have the engine covered up on the side of the house and it is storming today. Its supposed to clear tomorrow. I'll see if I can get a measurement from the block with all of the accesories hanging on it

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dims

Post by xschop on Fri Nov 20, 2009 2:28 pm

Thanks Blue. I need to know the differences. Because I am finishing the 1-piece bracket that mounts the GM alternator and 944 PS pump on the driver's side. Either the Alternator bracket needs to be milled at the bracket or the bracket needs milling. For the PS pump there will be different pulley offsets for the 3 diff crank pulleys.
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Re: power steering pump

Post by Bluemach1 on Sat Nov 21, 2009 11:41 am

pulley face to block = 125.12
pulley face to center of first first acc groove = 21.82

125.12 - 21.82 = 103.30

let me know if you need any other measurement.

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Re: power steering pump

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