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951 V8 with Boxter 986/911 996 ABS ----- DONE :-)

 
Old 01-23-2012, 02:04 AM
  #31  
333pg333
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btw Tony. A 1.75 sec improvement is great first time out. What times are you doing to put this into context?
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Old 01-23-2012, 02:57 AM
  #32  
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Originally Posted by Dubai944 View Post
Tony,

Good stuff. Have you previously driven a 944 with factory ABS on track? Be interested in your impressions on how much better/different the newer system feels.
I have. I have had several track 951's with factory ABS. And I have taken all of them out. That's how bad they are. The cars, in the hands of an experienced driver, are considerably faster without the factory 951 ABS.

Why? Because the factory 951 ABS system is extremely slow in its activation with far too small of a pulse, occurring way too slowly, and is far to easy to activate.

In short, on a race track it's junk.

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Old 01-23-2012, 03:09 AM
  #33  
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Is the S2 ABS the same system as the 951?
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Old 01-23-2012, 03:10 AM
  #34  
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Is the S2 ABS the same system as the 951?
Yes it is

The rear banana arms would have to have the holes for the sensors. It would be easier to buy 87+ parts with the sensors in them.
All '87 & '88 arms does not have holes for the sensors. My son's '87 Swiss import model had not them and also my '88 US model lacks them as well. Non ABS arms can be easily modified to accept sensors. Same thing with non ABS '87 and newer spindles.

I would like to know the part numbers of ABS pieces Tony used, We are going to install ABS to son's project 951, but at this point it would be easy to use Boxster parts instead of 944 S2 system we have.
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Old 01-23-2012, 06:18 AM
  #35  
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Good demonstration of ABS vs non-ABS

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Old 01-23-2012, 12:07 PM
  #36  
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So if the car already has factory ABS, all that needs to be changed is to swap the stock ABS pump over to the 986 one?
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Old 01-23-2012, 01:55 PM
  #37  
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Originally Posted by 333pg333 View Post
btw Tony. A 1.75 sec improvement is great first time out. What times are you doing to put this into context?
From a 1:28.8 ish to a 1:26.7 ish

It's very substantial.

The top super fact POC GT2 cars (highly prepared 996 cup cars/996GT3 cars with excellent drivers (quite a few professional)are turning from high 1:23's to an average of a mid 1:24's.



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Old 01-23-2012, 01:57 PM
  #38  
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Originally Posted by docwyte View Post
So if the car already has factory ABS, all that needs to be changed is to swap the stock ABS pump over to the 986 one?
Yes.

A 2-row (the pins on the connector) 986 pump.

Note: You will have to rearrange the brakes lines where they enter the stock pump so that they align with the correct respective ports.

Also you will have to know how to pinout the 986 wiring harness so you connect up your wheel sensors, as well as a abs light, and finally an aftermarket OBD2 female diagnostic plug so that you can take your car to someone that has the factory Porsche software and PCMCIA card setup to reset the ABS and troubleshoot it if necessary.


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Last edited by TonyG; 01-23-2012 at 07:19 PM.
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Old 01-23-2012, 02:28 PM
  #39  
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So the pump is wired for power only? There is no seperate ABS Controller needed as with the stock system?
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Old 01-23-2012, 03:56 PM
  #40  
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Tony, where does your 986 pump sit ? Is it as big as the factory 951 unit ?

Thanks
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Old 01-23-2012, 05:04 PM
  #41  
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Originally Posted by Dubai944 View Post
Good demonstration of ABS vs non-ABS

Thats a great Picture. But even with ABS it would seem that vehicle on the left(dog) is still going into the wall(water) lol
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Old 01-23-2012, 07:15 PM
  #42  
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Originally Posted by Dubai944 View Post
So the pump is wired for power only? There is no seperate ABS Controller needed as with the stock system?
That is correct.


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Old 01-23-2012, 07:16 PM
  #43  
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Originally Posted by marcoturbo View Post
Tony, where does your 986 pump sit ? Is it as big as the factory 951 unit ?

Thanks

I don't have a stock 944 ABS pump handy, but from recollection, the 911/986 ABS pumps are smaller.

Mine is located on the center tunnel under the dash.


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Old 01-23-2012, 11:27 PM
  #44  
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Sounds like an easy improvement for those of us with factory ABS. Personally, I haven't found the factory system completely worthless. I did do some tests originally with it disconnected, but although I was able to match my times with a bit of practise, I was never able to eliminate the occasional lockup and flat spotting race slicks is too expensive for me so I have continued to run with it.

This does sound like a real performance improvement though. What's the bet there is suddenly a shortage of 986 ABS pumps?
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Old 01-23-2012, 11:30 PM
  #45  
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Originally Posted by JET951 View Post
Thats a great Picture. But even with ABS it would seem that vehicle on the left(dog) is still going into the wall(water) lol
Sometimes it doesn't matter how good your brakes are, you are just going too damn fast...lol
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