996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Trying to Decide whether to change the Clutch Slave Cylinder

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Old Feb 17, 2012 | 11:24 PM
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Originally Posted by awdbiturbo1
My pedal is ultra stiff as of right now. you are giving me "hope" that is only the accumulator though. However y pedal is currently so stiff and unable to get into any gear, I am not leaking any fluid though....
that doesn't sound good. all it takes is one depression and we start our cars, right? are you trying to shift around before you start the car? i don't try and shift gears until i'm engine on, and even then, i often engage in 2nd for a few inches, then engage first to avoid a "clunk" at cold takeoffs. mind you this is a winter protocol for me at near 35 degrees some early am's. but once started all the hydraulics that assist the clutch should be nearly optimal. mine has to "warm up" a bit as i mentioned to normalize what i'm guessing is our operating pressure, since this only happens because our accumulators are "acting up". but if i wasn't able to get into any gear the way you describe, i'd be thinking gear oil change or clutch stuff, beyond the known accumulator issues.

but i only know how mine have worked ( or not ), ymmv. just one of the obvious peculiarities of the beloved 996t. if it starts leaking, you know what to do.
 

Last edited by '02996ttx50; Feb 17, 2012 at 11:32 PM.
Old Feb 17, 2012 | 11:30 PM
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Originally Posted by Etchhead
Just had my whole system replaced today because I had leaking pentosin on the floor. Other than that it was working fine. Also did oil change, brake pads, and headlight restoration. Car is looking and driving great now but did cost me a bit of coin...
i'm about to take the semi annual plunge into the shop for some spring freshening up myself. new f14''s w/ ps'2's, new h&r's etc. but i'm hoping to leave well enough alone with my half assed ( and currently working mostly ) accumulator. but it's only a matter of time. so far, i've bought two of em
 
Old Feb 18, 2012 | 06:56 AM
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The Consensus seems to say Accumulator, that is a relief to hear. Car is all jacked up ready to go. Weather has been dreary so I have been procrastinating a little. I know it is in the garage, but I feel better if it is sunny, it is Florida after all. I did get a motive bleeder so I most likely will bleed too.

I do have another question, I could not get Pentosin 11s so I got 2 Liters of Pentosin 202. I think they are compatible, will do a little more googling I guess.

Ian
 
Old Feb 18, 2012 | 07:19 AM
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202 replace the 11. no problem...Just in case the bladder is not completely depleted. Depress the clutch 25 times before removal, better safe than sorry...


Pentosin: http://www.lufteknic.com/Merchant2/m..._Code=PS_Fluid
 

Last edited by jpflip; Feb 18, 2012 at 07:29 AM.
Old Feb 18, 2012 | 07:38 AM
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Originally Posted by jpflip
202 replace the 11. no problem...Just in case the bladder is not completely depleted. Depress the clutch 25 times before removal, better safe than sorry...


Pentosin: http://www.lufteknic.com/Merchant2/m..._Code=PS_Fluid
Thanks, I stayed up all night depressing the clutch lost count but my left calf seems larger.

Just need to get my fat !@## under the car and do it. It is overcast again today....

I have Monday off, so maybe then. As you can see I do not use the car much, it could stay on ramps for another 2-4 weeks and I would not really notice. I did change the oil though on Thursday though. Mobil 1 5w 50, no idea why I did it. I change every year regardless. The oil and filter that came out seemed as clean as the new. I also replaced the washers on the drains (Turbos too). I bought 3 sets from Pelican Parts and have one set left.

Does the oil ever get dirty on these cars, perhaps if you do more than 600 miles a year?

I will report on the Accumulator change when I get around to it. Please continue your stories I like reading them.

My car is on my web page at "impconcepts d0t C0m" Right Column Porsche, you can check my other mods and DIY installs there, at least the ones I have documented. I think I am just getting tired of tuning and fixing cars. No other mods to do on it now. It is fast enough for me.

Thanks again for all the input and telling me what I want to hear (Accumulator Yayyyyyy!) keep the stories coming.

Ian
 
Old Feb 18, 2012 | 10:59 AM
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Went for a visit on impconcepts and your car is a beauty! Congratulations. For the clutch depressurization I've said 25 times not 25 hours!!!
 
Old Feb 18, 2012 | 11:43 AM
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Originally Posted by jpflip
Went for a visit on impconcepts and your car is a beauty! Congratulations. For the clutch depressurization I've said 25 times not 25 hours!!!
Thanks,

OK Did it, replaced the accumulator. Took a grand total to about 1.5 hours, some of that was my mulling.

Did get a little Pentosin bleed off at the neck of the accumulator but the plastic bag took care of it. One interesting thing, I bled the clutch but I do not think it needed it. No bubbles just pure green stuff nevertheless all done.

The hardest part was making and bending the 27mm wrench into place. A 27mm Dogleg would have been better IMHO. There is not a lot of room to tighten it back up. I use a piece of wooden dowel and tapped with with a mallet until it was tight by my calculations anyway.

AND the best part.... The clutch is better than it has ever been. PurrrFeeccct!. I would even call it a "Ladies" clutch it is so smooth and light.

Probably was bad 3 years ago when I got the car.

Soooo the manual is full of it. All their tests indicated the slave. Probably inserted for the dealers sake to make some extra cash, typical.

Ian
 
Old Feb 18, 2012 | 12:36 PM
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Good job ShokWaveRider!!!
 
Old Feb 18, 2012 | 06:50 PM
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a positively swift outcome. well done!
 
Old Jun 22, 2014 | 02:50 AM
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GT2 Conversion Question

I'm considering the GT2 conversion, but I would like to know what the pressure increase feels like. My specific question is: With a bad accumulator/not running/ the clutch is not being power assisted....correct? Then does that mean with a GT2 conversion, running or not, the feel would be about the same?
 
Old Jun 22, 2014 | 08:06 AM
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Originally Posted by athena1111
I'm considering the GT2 conversion, but I would like to know what the pressure increase feels like. My specific question is: With a bad accumulator/not running/ the clutch is not being power assisted....correct? Then does that mean with a GT2 conversion, running or not, the feel would be about the same?
the accumulator not working properly mainly means it just isn't holding hyd pressure while engine is off hence the stiff feel. as to a post conversion? think gt3 and/or a/c porsche clutch feel. more precise engagement and less inconsistency. i'm sure the "proper" gt2 conversion is optimal, but as long as it's woking properly ( should read "when' lol ) i don't mind the oem assisted clutch action of the stock setup. to each their own, though i would do the conversion if it's the tap and drill method.

all that said, i personally haven't done it, but have been in cars that have had the mod. feels like a normal clutch. while ours in stock configuration, often does not!
 
Old Jun 22, 2014 | 02:04 PM
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Originally Posted by athena1111
I'm considering the GT2 conversion, but I would like to know what the pressure increase feels like. My specific question is: With a bad accumulator/not running/ the clutch is not being power assisted....correct? Then does that mean with a GT2 conversion, running or not, the feel would be about the same?
I just got my car back this week from the GT2 conversion and a bearing fix in the tran$ (not a mistake). My accumulator was bad since I bought the car 4 years ago. With the GT2 setup - the clutch is easier to depress than before.
 
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