996 IMS, timing chain guide, transmission pinion bearing and misc items DIY project
02-08-2011, 01:13 PM
#31
RL Community Team
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02-08-2011, 02:40 PM
#32
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Tom,
I am the black sheep among the 993 community. Ironically Chris Walrod and I still pretty much work on lots of 993s on weekends but I for one prefer the 996. We always joke around and telling each other "Man, it would be so great to be working on all 996s, because they are so much easier to work on."
The only draw back of owning a 996 is the constant ridicule and down talk from my 993 friends.
Mechanically, handling, ease of everyday use the 996 is 100% better than the 993. Not to mention ease of repair and mechanic friendliness.
I made a decision to sell my 993 and use the 996 as an everyday driver mainly for those reasons. After all who have time to constantly deal with the maintenances, the 996 only requires 1/3 of the 993 maintenance in 1/2 of time to perform them.
I am the black sheep among the 993 community. Ironically Chris Walrod and I still pretty much work on lots of 993s on weekends but I for one prefer the 996. We always joke around and telling each other "Man, it would be so great to be working on all 996s, because they are so much easier to work on."
The only draw back of owning a 996 is the constant ridicule and down talk from my 993 friends.
Mechanically, handling, ease of everyday use the 996 is 100% better than the 993. Not to mention ease of repair and mechanic friendliness.
I made a decision to sell my 993 and use the 996 as an everyday driver mainly for those reasons. After all who have time to constantly deal with the maintenances, the 996 only requires 1/3 of the 993 maintenance in 1/2 of time to perform them.
02-08-2011, 05:09 PM
#33
Racer
The hardest part was to press the gears and bearing off, which required a very high tonnage press. In addition you will need to fabricate plates of various size to grab on to each of the gears while they are pressed out.
You should contact Chris Walrod for details, as he did all the pressing and fitting.
Thanks
You should contact Chris Walrod for details, as he did all the pressing and fitting.
Thanks
02-08-2011, 08:24 PM
#34
Rennlist Member
Great write up. I am not a DIY'er and my car has been diagnosed with a bad piniion bearing also. The mechanic I am dealing with says it is cheaper to put in a used tranny as opposed to taking it apart and fixing it. He also says that when he removes the parts to get to the bearing " things " usually break and need replaced. Any opinions on my best course of action ?
02-08-2011, 08:46 PM
#35
RL Community Team
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Tom,
I am the black sheep among the 993 community. Ironically Chris Walrod and I still pretty much work on lots of 993s on weekends but I for one prefer the 996. We always joke around and telling each other "Man, it would be so great to be working on all 996s, because they are so much easier to work on."
The only draw back of owning a 996 is the constant ridicule and down talk from my 993 friends.
Mechanically, handling, ease of everyday use the 996 is 100% better than the 993. Not to mention ease of repair and mechanic friendliness.
I made a decision to sell my 993 and use the 996 as an everyday driver mainly for those reasons. After all who have time to constantly deal with the maintenances, the 996 only requires 1/3 of the 993 maintenance in 1/2 of time to perform them.
I am the black sheep among the 993 community. Ironically Chris Walrod and I still pretty much work on lots of 993s on weekends but I for one prefer the 996. We always joke around and telling each other "Man, it would be so great to be working on all 996s, because they are so much easier to work on."
The only draw back of owning a 996 is the constant ridicule and down talk from my 993 friends.
Mechanically, handling, ease of everyday use the 996 is 100% better than the 993. Not to mention ease of repair and mechanic friendliness.
I made a decision to sell my 993 and use the 996 as an everyday driver mainly for those reasons. After all who have time to constantly deal with the maintenances, the 996 only requires 1/3 of the 993 maintenance in 1/2 of time to perform them.
On the other hand, if I were to have a garage queen, it would be a 993. ...Unless, of course, I could afford a 996 gt3!
I actually wasn't looking for a 996- it just fell into my lap. The cab is great- I actually had the top down today in the 43 degree sunshine!
02-09-2011, 01:05 AM
#37
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Great write up. I am not a DIY'er and my car has been diagnosed with a bad piniion bearing also. The mechanic I am dealing with says it is cheaper to put in a used tranny as opposed to taking it apart and fixing it. He also says that when he removes the parts to get to the bearing " things " usually break and need replaced. Any opinions on my best course of action ?
I think he was just trying to avoid the option to rebuild the box, it is just much easier to replace the transmission entirely.
There is really nothing to break to replace the pinion bearing unless you don't know what you are doing. Maybe he is referring discovering more wear and tear parts that needs to be replaced while you are at it?
02-09-2011, 08:10 AM
#40
Rennlist Member
Scott,
I think he was just trying to avoid the option to rebuild the box, it is just much easier to replace the transmission entirely.
There is really nothing to break to replace the pinion bearing unless you don't know what you are doing. Maybe he is referring discovering more wear and tear parts that needs to be replaced while you are at it?
I think he was just trying to avoid the option to rebuild the box, it is just much easier to replace the transmission entirely.
There is really nothing to break to replace the pinion bearing unless you don't know what you are doing. Maybe he is referring discovering more wear and tear parts that needs to be replaced while you are at it?
Thanks for your reply.
I also believe he was referring to a used tranny. Wouldn't a used transmission have the same weak bearing problem ? Are there rebuilt ones out there already that have addressed the bearing problem ?
02-09-2011, 10:35 AM
#41
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Not trusting the history of the transmissions for sale made me to rebuild it on our own.
02-11-2011, 04:57 AM
#42
Three Wheelin'
Robin,
Excellent thread. Thank you, so much, for posting it.
You mention the spider gear as a common failure point for the 996 transmission. Did you replace the unit in your car?
Also, what did you use to upgrade the clutch forks?
And the final question, did you take a look at the lifters? Any signs of failure?
Thanks,
Jon
Excellent thread. Thank you, so much, for posting it.
You mention the spider gear as a common failure point for the 996 transmission. Did you replace the unit in your car?
Also, what did you use to upgrade the clutch forks?
And the final question, did you take a look at the lifters? Any signs of failure?
Thanks,
Jon
02-11-2011, 08:47 AM
#43
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Jon,
The pitting on my spider gears were still minor so I left it in, the pitting condition can vary from car to car. Not too difficult to replace.
I did upgrade the clutch fork and the pivot point, made a huge difference on how smooth the transmission shifted and the pedal force. Prior my clutch pedal required a lot of force.
The lifters looked fine, but I know there were probably a hand full of them that could be replaced as I do hear a little lifter noise at idle but goes away the second I give a little gas. I decided to leave them as they were, again no big deal if I had to go back and replace them.
The biggest surprise to me was replacing the CAM chain plastic guides, as now I can hear and feel the variocam working. I didn't replace any spark plug or coils so I know my power increase the engine tone change had to come from replacing the CAM chain guides. Hard to imagine it would make that much difference.
The pitting on my spider gears were still minor so I left it in, the pitting condition can vary from car to car. Not too difficult to replace.
I did upgrade the clutch fork and the pivot point, made a huge difference on how smooth the transmission shifted and the pedal force. Prior my clutch pedal required a lot of force.
The lifters looked fine, but I know there were probably a hand full of them that could be replaced as I do hear a little lifter noise at idle but goes away the second I give a little gas. I decided to leave them as they were, again no big deal if I had to go back and replace them.
The biggest surprise to me was replacing the CAM chain plastic guides, as now I can hear and feel the variocam working. I didn't replace any spark plug or coils so I know my power increase the engine tone change had to come from replacing the CAM chain guides. Hard to imagine it would make that much difference.
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158Sierra (12-05-2021)
02-11-2011, 06:24 PM
#45
Rennlist Member
Very, very impressive
When can I drop my car off?
When can I drop my car off?