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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LS430 Big Brake Swap

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Re: LS430 Big Brake Swap

Post  coctostan on Tue Jun 23, 2009 8:55 pm

Most Brembos are nothing special. It is my opinion that Brembos got their rep from the inherent braking benefits the rear engined 911s had. Putting most of the weight over the rear axle is the best possible braking setup. If you take two cars with optimally balanced brakes, same weight, wheelbase, and tire compounds, the one with the greater rearward weight bias will always win at braking.

For years, people saw the mag reviews touting the 911s braking stats and the reviewers attributing it to the massive Brembos. Now, every performance car must have Brembos or nobody will buy it.

Anyway, these Lexus brakes look very stout, especially for the price.

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Hubs and Bearings...

Post  gt1scca on Tue Jun 23, 2009 9:55 pm

I've been looking in PET...here are some bearing and 944 front hub numbers.
Might as well freshen 'em up while it's torn down.
(You may be surprised by what fits what...)

944 FRONT WHEEL BEARINGS and HUBS
___________________________________

EARLY (TO 1986)
BEARINGS:
999.059.098.00 inner
999.059.065.00 outer
HUB:
477.405.065.B (TO 1986-all)
___________________________________

1986 TURBO
BEARINGS:
999.059.098.00 inner (1986-all)
999.059.065.00 outer (1986-all)
HUB:
951.341.065.00 (1986 turbo)
___________________________________

1987-UP
BEARINGS:
999.059.090.00 inner
999.059.089.01 outer
HUB:
951.341.065.06 (1987-up)
951.341.065.08 (1987-up M030/758)

* I counted (4) FOUR hubs...(M030=#4)
.


Last edited by gt1scca on Fri Aug 21, 2009 1:38 am; edited 3 times in total

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Re: LS430 Big Brake Swap

Post  gt1scca on Tue Jun 23, 2009 11:34 pm

[quote="xschop"]
Anybody have an 86 Turbo hub and Rotor to measure the dimensions. IT's the ODDBALL
Basically need to know the rotor dimensions to verify if all that is needed is to drill the bracket mount bolt spreadwidth to 94mm. What I,m concerned with is the rotor height being the same as the Early NA rotor height (NOT Width). Hard to tell from the pics but what is critical is the dimension in yellow being same as the 83-85.5 NA......Any input ????.....PORH
1986 Turbo dims = (early) 1983-86 dims, with the exception of 94mm ('86 Turbo) caliper mounting. ALSO, rear '86 Turbo rotors are 297-299mm dia.

The LS430 should go on the rear (the '86T fronts move to the rear, so the same block should put the LS430 back there)...AND two (2) 1" master cylinders can be bolted to the Tilton balance bar...if I need to verify by mic, I will.


Last edited by gt1scca on Fri Aug 21, 2009 1:38 am; edited 1 time in total

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They may work...

Post  gt1scca on Wed Jun 24, 2009 9:41 pm



The 1986 Turbo front AND rears are the same depth and diameter...74mm X 300mm. The only concern with putting the Boxster S rotor on the rear is the integral concentric ring...an adapter could possibly be milled, at the cost of added wheel offset.

If no go...the turbo rotors are only 18mm smaller in diameter.


Last edited by gt1scca on Fri Aug 21, 2009 1:39 am; edited 1 time in total

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Re: LS430 Big Brake Swap

Post  Dawgz83948 on Thu Jun 25, 2009 10:45 am

Just to be sure the Porsche brake line will screw into the Lexus caliper, correct?
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Right in...

Post  gt1scca on Thu Jun 25, 2009 11:13 am

Dawgz83948 wrote:Just to be sure the Porsche brake line will screw into the Lexus caliper, correct?
On Mon. Dec. 08, 2008, matthewb said (PHB):
"...The original Porsche lines thread directly into the calipers even though the caliper is supposed to use a banjo bolt style connection..."
Got your adapters made yet, Tim? Razz


Last edited by gt1scca on Fri Aug 21, 2009 1:39 am; edited 2 times in total (Reason for editing : "supposed" sp.)

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Re: LS430 Big Brake Swap

Post  Dawgz83948 on Thu Jun 25, 2009 12:10 pm

gt1scca wrote:
Dawgz83948 wrote:Just to be sure the Porsche brake line will screw into the Lexus caliper, correct?
On Mon. Dec. 08, 2008, matthewb said (PHB):
"...The original Porsche lines thread directly into the calipers even though the caliper is supposed to use a banjo bolt style connection..."
Got your adapters made yet, Tim? Razz

Waiting on the machine shop. I bought a spare set of hubs to get machined so I can do all at one time. Anything odd (except for better stopping) I should expect?
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Re: LS430 Big Brake Swap

Post  xschop on Thu Jun 25, 2009 12:35 pm

[/quote]Anything odd (except for better stopping) I should expect?[/quote]

....a Fatter wallet since you don't have to cough over to Brembo or RH
P.O.R.H.
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Rear brakes

Post  gt1scca on Thu Jun 25, 2009 12:45 pm

...a Fatter wallet since you don't have to cough over to Brembo or RH P.O.R.H.
Razz Razz
What brakes are you running on the rear?

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Re: LS430 Big Brake Swap

Post  Dawgz83948 on Thu Jun 25, 2009 1:19 pm

gt1scca wrote:
...a Fatter wallet since you don't have to cough over to Brembo or RH P.O.R.H.
Razz Razz
What brakes are you running on the rear?

Hopefully with larger front's I can take the rears off. Razz Razz Razz Save some weight.
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Turbo fronts on rear...

Post  gt1scca on Sat Jun 27, 2009 11:01 pm

You can run the Turbo front calipers on the rear...The only exceptions are the '86T and the M030 cars. On the '86T, the same year fronts will work on the rear. Everything else has the same mounting...

N/A, S, S2, Turbo, Turbo S = 76mm caliper mounting
1986 Turbo = 94mm caliper mounting
M030 = axial mounted calipers

In other words...Turbo fronts will go on the rear of almost everything else 944.
1986 Turbos and the M030 are the "special" ones...


Also,
Here are piston sizes, if anyone needs an MC sized...

Porsche Piston Sizes for Early Brembo Calipers

928 86- VIN#F 92GS8 61000
model year 87:
Front Caliper 42mm and 36mm
Rear Caliper 30mm and 28mm
88 Front Caliper 44mm and 36mm
Rear Caliper 30mm and 28mm

930 and Carrera Turbo look:
Front calipers: all 38mm pistons
Rear Calipers: all 30mm pistons

944 Turbo
Front Calipers:
'86 Turbo 38mm and 36mm
'87-88 Turbo 40mm and 36mm
'88 Turbo S 44mm and 36mm
'89 944 S2 up to VIN # >> 94KN4 51880
40mm and 36mm

Rear Calipers:
'86-88 Turbo and Turbo S
30mm and 28mm
'89 S2 up to VIN #>>94KN4 51880
30mm and 28mm

The "MONSTAAZ":
Lexus LS430
42mm X 4

Razz
.


Last edited by gt1scca on Sat Jun 27, 2009 11:18 pm; edited 2 times in total (Reason for editing : Crickets, I hear CRICKETS...)

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GRACIAS Hombre

Post  xschop on Sun Jun 28, 2009 8:30 am

You get a big THANKS for this info.
I'll mod up anything/bracket just to avoid having to buy anything with a "Porsche" logo on it...POPP
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POPP-TOP Machine Shop...

Post  gt1scca on Sun Jun 28, 2009 9:24 am

No prob, dude. 'Been working on this for days...I have 19 files on my desktop that were combined to get this info in one place. I can't believe after 20+ years, SOMEONE [POPP] didn't already have this together. VDub Engineereing.com was the most thorough, and they are buying Turbo brakes like mad...

Here's the dims on an N/A rear rotor (the only such drawing I could find)...wonder if the LS430 will work with the e-brake? Hmmm, da mic is coming back out...



Razz


Last edited by gt1scca on Fri Aug 21, 2009 1:42 am; edited 1 time in total

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911

Post  xschop on Sun Jun 28, 2009 10:20 am

Wow, you're gonna cause me to go buy a 32g USB flash drive...LOL
I see now, That the Boxter S rotors may work if the rotor hub faces were machined to fit the 944 rear axle hub. this would also let you skip making concentric rings like the front Late Boxster S rotor swap, but you would have to turn the Boxster S rotors every time you went to replace them......
I am still wondering if the 87-up Turbo rear 299mm rotors will just slip on the NA cars?
This is a definite POPP post
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It's Gettin' deep...

Post  gt1scca on Sun Jun 28, 2009 10:32 am

A little more in-depth...

a) Early 944 N/A (1983-86)
Steel sliding (ATE) axial mount with a ventilated disk (282mm x 20.4mm). The rotor mounts from the rear of the hub and is fixed by 5 M8 x 25 screws. The hub is aluminum (PN: 477.405.605D).

b) Early 944 Turbo (1986)
Fixed Brembo axial mount caliper with ventilated 299mm x 28mm rotor. The rotor attaches from the rear of the hub like in (Early 944 N/A (83-86). The hubs are different however because of the distance between the rotor mounting face and the wheel mounting face. The Turbo hubs (PN: 951.351.605.00) are narrower in that dimension than the N/A's.

c) Late N/A (1987-89)
Marketed as the 944S. Steel sliding (ATE) axial mount with a ventilated disk (282mm x 20.4mm). The rotor mounts to the front of the hub similar to most modern vehicles. The caliper is exactly the same as (Early 944 N/A (83-86), but the rotor differs. The hub is aluminum (PN: 951.341.605.3R).

d) "Middle" Turbo (1987-88) and 89-91 S2
Same caliper as (Early 944Turbo (86), same hub as (Late N/A (87-89), but the rotor mounts to the front of the hub and measures 299mm x 28mm.

e) Late Turbo (89-91) AND 88 Turbo S [*M030]
Same hub as (Late N/A (87-89), but radial mount Brembo caliper and bigger 304mm x 32mm rotor.

Wow, you're gonna cause me to go buy a 32g USB flash drive...
I have an external 250 GB...FULL.
Get Crack-a-Lackin'...


Last edited by gt1scca on Fri Aug 21, 2009 1:42 am; edited 1 time in total

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Re: LS430 Big Brake Swap

Post  Dawgz83948 on Mon Jun 29, 2009 11:48 am

Anyone have pics with these already installed on a car?
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Re: LS430 Big Brake Swap

Post  xschop on Mon Jun 29, 2009 12:25 pm

A few people have already installed them on the front. I'm working with Greg to get the best setup for the rear. Are you machining brackets for the front LS430 Swap? Early, late?
I am working on manual brakes with a balance bar conversion bracket as we speak. I'm doing a custom billet housing, but you can weld one up yourself after I post dimensions....
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Re: LS430 Big Brake Swap

Post  Dawgz83948 on Mon Jun 29, 2009 12:31 pm

xschop wrote:A few people have already installed them on the front. I'm working with Greg to get the best setup for the rear. Are you machining brackets for the front LS430 Swap? Early, late?
I am working on manual brakes with a balance bar conversion bracket as we speak. I'm doing a custom billet housing, but you can weld one up yourself after I post dimensions....

I'm using your diagram to install on the front of my early car. They "should" be done Thursday. I would like to find a fitting to adapt a 10mm banjo to the flare.

Manual brakes sound good as long as they will stop the car better than mine did before the Hydro boost was installed. I have a custom idler that I bought off ebay that takes the place of the PS pump. Maybe it would be good if I pist pics and/or a measurements so someone can make a diagram.
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Rear setup

Post  gt1scca on Tue Jun 30, 2009 12:40 am

Due to the differences in hat dimensions (provisions for the e-brake), the best solution @ this time for the rear will be as follows:

(87-89) Turbo / (89-91) S2 rear rotors 299 x 28mm
(87-89) Turbo / (89-91) S2 front calipers

*I just got my email from Tilton...
" The numbers show that 5/8" front and 15/16" rear will work for a lighter pedal (street and some track) and that 7/10" front with 1" rear would work for a harder pedal (pure road race). Most people who drive on the street as well prefer a little lighter pedal. The trade-off is a little extra pedal stroke."

*If running only one MC, the 928S4 (5/18 bar) (also factory installed on the Turbo and S2 944, part #951.355.305.01) proportioning valve should be used.

I have a custom idler that I bought off ebay that takes the place of the PS pump. Maybe it would be good if I pist pics and/or a measurements so someone can make a diagram.
Tim, is your car down? If not, send me some dims... Razz


Last edited by gt1scca on Thu Jul 02, 2009 12:24 am; edited 4 times in total (Reason for editing : I tawt I huurd a kwikit...and added prop valve part #)

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setup

Post  xschop on Tue Jun 30, 2009 7:20 am

Hey Greg, are those numbers for the Lexus LS430 front calipers and Turbo fronts mounted to rears?
One big question I have never seen....Is the 86 Turbo rear trailing arm the exact same/part# as the NA's ?????
If so, then whatever bracket adapter is designed for the LS430 calipers should fit the NA's and 86T with the Later 87-Up Turbo rotors installed..... i'm glad you have an 86T on hand to verify... Very Happy
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Re: LS430 Big Brake Swap

Post  gt1scca on Tue Jun 30, 2009 11:12 am

Q #1: Yes. Razz
Q #2: I can verify that shortly...
Q #3: All N/A, late Turbo, and S have the 3.0" / 76mm caliper mounting. The exceptions are the S2 M030 and 1986 Turbo. S2 M030 are radial mount, BUT adapters could be made or bought elsewhere (Broadfoot Racing makes a set), and the 1986T caliper mounting is 94mm. Still the same brackets, different mounting hole location.

POST REVISED: The S2 M030 and the 1986 Turbo are the difficult ones...


Last edited by gt1scca on Tue Jun 30, 2009 2:24 pm; edited 1 time in total (Reason for editing : M030 added...)

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Re: LS430 Big Brake Swap

Post  Tetzuoe on Tue Jun 30, 2009 11:31 am

gt1scca wrote:
If we can measure an S2 caliper and spindle, we could make those brackets...although the S2 already has decent brakes.
funny you should mention.... xschop has a set of 87s spindles on the way. should get there on the 3rd
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Re: LS430 Big Brake Swap

Post  gt1scca on Tue Jun 30, 2009 11:49 am

'nuff said. Razz Razz Razz

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Re: LS430 Big Brake Swap

Post  v8carreragts on Tue Jun 30, 2009 12:26 pm

Rear trailing arms.......

Early N/A 944.331.021.00 left
944.331.022.00 right

86 turbo 951.331.021.01 left
951.331.022.01 right

As you may or may not know, the first 3 numbers are the body number and doesn't really mean anything as far as the part number. In other words, 944.331.021.00 and 924.331.021.00 are the same parts. The actual part number is 331.021 and the last 2 digits are the revision number.

So this means that the early n/a and 86 turbo would be the same part except for what has changed in the revision. So it is possible that they are basically dimensionally they are the same. I have 951 rear calipers on my early n/a arms and it needed 1/8" spacers between the calipers and the caliper mounting surfaces. It is possible that the spacers would not be needed if I had 86 turbo rotors. The 86 rotors are about 1/8" thicker. If they added the extra thickness to the inside and kept the outside in the same location it would mean that the arms are interchangable.
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rear brackets

Post  xschop on Tue Jun 30, 2009 1:59 pm

looks like evertything is starting to pan out. the lexus brackets may need to be tweeked for the 86Turbo. If the S2 front spindles are 94mm spreadwidth, they would need the same tweeking.
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