Is there a clutch adjustment?
05-10-2003, 12:32 AM
#1
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Is there a clutch adjustment?
Just got my car back after a clutch job and B&M short shifter install. Everything was fine when I picked up the car. Only thing odd was that I had to put the clutch pedal to the floor for smooth shifts.
After getting home (30 minutes later), there is a rattling sound at idle with the clutch depressed. The sound goes away when I push the clutch in.
Sounds like the throw out bearing is touching the fingers of the pressure plate. Is there an adjustment for something like this on the Boxster-S?
After getting home (30 minutes later), there is a rattling sound at idle with the clutch depressed. The sound goes away when I push the clutch in.
Sounds like the throw out bearing is touching the fingers of the pressure plate. Is there an adjustment for something like this on the Boxster-S?
05-12-2003, 03:21 AM
#4
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Thread Starter
Bii,
Light flywheel and "sport" release bearing installed along with B&M short shifter.
The noise was louder when car was parked downhill. Went away when parked uphill.
Also, noise only apparent after "aggresive" driving. Normal driving does not result in noise.
I can't fully describe the shift quality, but it feels very crisp and solid. Stock setup felt as if the clutch had some room to 'slip' between shifts. I definitely like this setup except for the rattle.
Light flywheel and "sport" release bearing installed along with B&M short shifter.
The noise was louder when car was parked downhill. Went away when parked uphill.
Also, noise only apparent after "aggresive" driving. Normal driving does not result in noise.
I can't fully describe the shift quality, but it feels very crisp and solid. Stock setup felt as if the clutch had some room to 'slip' between shifts. I definitely like this setup except for the rattle.
05-12-2003, 03:40 AM
#5
Drifting
Have no idea about the uphill/downhill or agressive driving.
The dual mass flywheel does dampen noise from the transmission. The TSB says that when it is bad you hear transmission noise at idle and/or, when starting, shutting off, load shift.
Since yours is gone my guess is that is the reason you hear what you hear. What flywheel did you have put in and what is a "sport" release bearing. Jeff
The dual mass flywheel does dampen noise from the transmission. The TSB says that when it is bad you hear transmission noise at idle and/or, when starting, shutting off, load shift.
Since yours is gone my guess is that is the reason you hear what you hear. What flywheel did you have put in and what is a "sport" release bearing. Jeff
05-12-2003, 05:22 AM
#6
Intermediate
Thread Starter
The flywheel is AASCO. The release bearing (throwout bearing) and the pressure plate are from Sachs. Compared to the stock bearing, the only difference I saw was that the metal ring which pushes against the fingers of the pressure plate was ~5mm thicker.
Do you know what state the bearing and pressure plate mechanism is in during idle while in neutral with clutch out? Is there a mechanism other than gravity that keeps the pressure plate and the throw out bearing apart?
Do you know what state the bearing and pressure plate mechanism is in during idle while in neutral with clutch out? Is there a mechanism other than gravity that keeps the pressure plate and the throw out bearing apart?
05-12-2003, 04:16 PM
#7
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Exactly what type of clutch was installed onto your vehicle?
A spring hub clutch disc should be used on your setup when using a solid non dual mass flywheel.
The standard replacement clutch uses a fixed clutch disc which works in conjunction with the dual-mass flywheel.
The AASCO flywheel is a very nice quality piece. The replaceable friction surface is what I really like.
A spring hub clutch disc should be used on your setup when using a solid non dual mass flywheel.
The standard replacement clutch uses a fixed clutch disc which works in conjunction with the dual-mass flywheel.
The AASCO flywheel is a very nice quality piece. The replaceable friction surface is what I really like.
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05-12-2003, 06:00 PM
#8
Drifting
Bii may be on to something. When you got the 'sport' solid flywheel and release bearing, what clutch plate/friction disc was put in.
The oem plate does not have springs as there is the dual-mess flywheel. If that is what was put in with a solid flywheel...... But I would find that hard to believe as it is usually sold a a kit with all the correct parts.
<img src="http://www.986host.com/albums/ToolPants/tech_session_4_12_034.sized.jpg" alt=" - " />
The oem plate does not have springs as there is the dual-mess flywheel. If that is what was put in with a solid flywheel...... But I would find that hard to believe as it is usually sold a a kit with all the correct parts.
<img src="http://www.986host.com/albums/ToolPants/tech_session_4_12_034.sized.jpg" alt=" - " />
05-12-2003, 07:00 PM
#9
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Tool Pants
The clutch kit you have pictured is definitely stock OEM Porsche. Porsche does not make these parts even though they are in Porsche boxes. This unit is made by AP and from what I've seen its inferior compared to the Sach's unit which is available from aftermarket suppliers. Some aggressive Boxster drivers go through these clutchs sooner than they should.
The clutch kit you have pictured is definitely stock OEM Porsche. Porsche does not make these parts even though they are in Porsche boxes. This unit is made by AP and from what I've seen its inferior compared to the Sach's unit which is available from aftermarket suppliers. Some aggressive Boxster drivers go through these clutchs sooner than they should.
05-12-2003, 08:39 PM
#10
Drifting
Of course it is stock, I took the picture. Dual- mass flywheel is made by Luk. <a href="http://www.luk.de/english/Produkte/ZMS.html" target="_blank">Luk</a> Pressure plate, disc, and release bearing are made by Sachs. <a href="http://www.sachshandel.de/" target="_blank">Sachs</a> This have been a vendor for many year to Porsche. Yes, it is put in a Porsche box, so it cost more money.
Here is the dual-mass flywheel.
<img src="http://www.986host.com/albums/ToolPants/part_flywheel.jpg" alt=" - " />
I was trying to help you figure out your noise problem since you have at least 2 of 3 non stock parts. Still do not know what clutch plate you have in the car.
I went to the AASCO site but with my dial up I gave up after 15 minutes. They sell a lightweight flywheel is all I could gather. Have no idea what, if any, plate they sell to match the single mass flywheel. Was waiting for you to say.
<a href="http://www.aascomotorsports.com/#" target="_blank">AASCO</a>
Here is the dual-mass flywheel.
<img src="http://www.986host.com/albums/ToolPants/part_flywheel.jpg" alt=" - " />
I was trying to help you figure out your noise problem since you have at least 2 of 3 non stock parts. Still do not know what clutch plate you have in the car.
I went to the AASCO site but with my dial up I gave up after 15 minutes. They sell a lightweight flywheel is all I could gather. Have no idea what, if any, plate they sell to match the single mass flywheel. Was waiting for you to say.
<a href="http://www.aascomotorsports.com/#" target="_blank">AASCO</a>
05-12-2003, 11:37 PM
#11
Intermediate
Thread Starter
The current clutch plate is a new factory (non-spring) unit.
I was supplied with the Sachs racing clutch disk(puck type with no springs) when I got the flywheel, pressure plate and t/o bearing. Decided not to use it as I have driven track cars with that setup and would not want to attempt in-traffic driving with it.
Sachs is back-ordered with the "sport" clutch disk. Which is not spring loaded either. From what I understand, it differs from the stock unit by the material used for the friction surface.
For now, the stock clutch disk seems to work fine. The shifts are precise and exact. The car feels very responsive with no apparent clutch slippage. I know I'm going to go through this factory disk faster than normal, but by then maybe my Sachs sport clutch disk will be in.
I was supplied with the Sachs racing clutch disk(puck type with no springs) when I got the flywheel, pressure plate and t/o bearing. Decided not to use it as I have driven track cars with that setup and would not want to attempt in-traffic driving with it.
Sachs is back-ordered with the "sport" clutch disk. Which is not spring loaded either. From what I understand, it differs from the stock unit by the material used for the friction surface.
For now, the stock clutch disk seems to work fine. The shifts are precise and exact. The car feels very responsive with no apparent clutch slippage. I know I'm going to go through this factory disk faster than normal, but by then maybe my Sachs sport clutch disk will be in.
05-13-2003, 01:57 AM
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[QB]Of course it is stock, I took the picture. Dual- mass flywheel is made by Luk. <a href="http://www.luk.de/english/Produkte/ZMS.html" target="_blank">Luk</a> Pressure plate, disc, and release bearing are made by Sachs. <a href="http://www.sachshandel.de/" target="_blank">Sachs</a> This have been a vendor for many year to Porsche. Yes, it is put in a Porsche box, so it cost more money.
Tool Pants I apologize.....
I thought you were unaware of the photographed clutch/ flywheel parts you posted being OEM.
Apparently you are also oblivious of the fact that the clutch disc & pressure plate shown on your photo are AP. You did not look closely at AP's stamping on the hub of the clutch disc and plate cover.
I do realize that Sach's product is top notch and was an OE supplier for Porsche production cars back in the day.
___________________________________________
Have no idea what, if any, plate they sell to match the single mass flywheel. Was waiting for you to say.
____________________________________________
Why would you ever match a pressure plate to a flywheel?
Tool Pants I apologize.....
I thought you were unaware of the photographed clutch/ flywheel parts you posted being OEM.
Apparently you are also oblivious of the fact that the clutch disc & pressure plate shown on your photo are AP. You did not look closely at AP's stamping on the hub of the clutch disc and plate cover.
I do realize that Sach's product is top notch and was an OE supplier for Porsche production cars back in the day.
___________________________________________
Have no idea what, if any, plate they sell to match the single mass flywheel. Was waiting for you to say.
____________________________________________
Why would you ever match a pressure plate to a flywheel?
