MT upgrade/buzz elimination
#1
Racer
Thread Starter
MT upgrade/buzz elimination
Hi to all:
Just got done with 3 hour recon mission in the garage. Took off shifter handle and worked down to all necessary pieces to eval if shifter was loose there. nothing obvious.
Also, I went underneath car and removed shifter linkage tunnel and recon'd there as well. Can't tell if orginal shifter bushings are bad or not. Also, rear shifter coupler seemed ok as well--rubber portion.
I was debating removing the bushings (but don't know how to do this without potentially ruining bushing). Can one purchase the "Clutch Lever Ball Cup Bushing" (Part# 928-116-145-03-M100) to replace either/both of the bushings from factory? Or, does one need to buy the "Angular Joint, Ball Cup, for Shift Linkage, Manual Transmission, 911 Carrera 2/4 (1989-98), 911 Turbo (1991-97), Each" (Part #928-424-005-01-M100) for the front portion and then be stuck for a rear replacement?
ALSO, I was considering purchasing the Wevo PSJ shift coupler from Pelicanparts as well to replace the stock shift joint coupler. Saw some 911 drivers did this with their older non993s. Didn't see any reference to anything for 993s other than the golden rod. Any thoughts?
Finally, I am not interested in a Short Shift Kit. Like the stock throws. Just want to try to eliminate a plaguing shifter buzz/vibration above 3000ish RPMS in all gears.
Thanks, Brian
Just got done with 3 hour recon mission in the garage. Took off shifter handle and worked down to all necessary pieces to eval if shifter was loose there. nothing obvious.
Also, I went underneath car and removed shifter linkage tunnel and recon'd there as well. Can't tell if orginal shifter bushings are bad or not. Also, rear shifter coupler seemed ok as well--rubber portion.
I was debating removing the bushings (but don't know how to do this without potentially ruining bushing). Can one purchase the "Clutch Lever Ball Cup Bushing" (Part# 928-116-145-03-M100) to replace either/both of the bushings from factory? Or, does one need to buy the "Angular Joint, Ball Cup, for Shift Linkage, Manual Transmission, 911 Carrera 2/4 (1989-98), 911 Turbo (1991-97), Each" (Part #928-424-005-01-M100) for the front portion and then be stuck for a rear replacement?
ALSO, I was considering purchasing the Wevo PSJ shift coupler from Pelicanparts as well to replace the stock shift joint coupler. Saw some 911 drivers did this with their older non993s. Didn't see any reference to anything for 993s other than the golden rod. Any thoughts?
Finally, I am not interested in a Short Shift Kit. Like the stock throws. Just want to try to eliminate a plaguing shifter buzz/vibration above 3000ish RPMS in all gears.
Thanks, Brian
#2
Racer
Thread Starter
Update: after reassembling everything and going for a test drive, it seems I have made the problem worse. Now, vibration starts as early as 2500 RPM and also will continue to buzz even with the clutch depressed for shifting (which is different than before--it used to only be heard while transmission was connected to engine so to speak). Seems like I am on the right track though since I mucked around with those cup bushings and made things worse.
#3
Golden Rod is the way to go, unless you want to fork out the money for the real deal RS rod. My shifter rattled around quite a bit but after installing the Golden Rod, RS shifter, and new bushings all has been tight for the last 5 years.
#5
Other than the Golden Rod, all of my shifter parts were ordered from Sunset. I'm currently in Germany and my reciepts are back home so I don't know part numbers. Don't have the Porsche PET on this computer either to reference part numbers.
#6
Ok, just downloaded the PET and can see that you are talking about the ball cups. I did not do anything to those when I did my shifter. I replaced the 4 bushings, part #999 924 002 40 that go on the shifter fork.
#7
+993 on the golden rod and SSK! Call FD and do it! At the very least the golden rod, it will transform the feel of the shifter immediately and you won't get stranded on the side of the road when the brushing finally fail.
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#8
Instructor
Did you lube the cup bushings with white lithium grease before you put them back? Also the small round bushings that connect the shift lever and the shift rod.
#9
Racer
Join Date: Jul 2010
Location: Sydney Australia
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Hi
Yes you can purchase the plastic cup bushes separately from Porsche, they are about $15 to $20 each.
I was going to replace mine, but though they would just fail again, so I replaced all the bits with a FD Golden Rod and the forward rod, the Forward rod will fix your above problem and you will not require the plastic cups.
This is one of the best, bang for bucks purchases, I have made for my 993.
Thanks,
Yes you can purchase the plastic cup bushes separately from Porsche, they are about $15 to $20 each.
I was going to replace mine, but though they would just fail again, so I replaced all the bits with a FD Golden Rod and the forward rod, the Forward rod will fix your above problem and you will not require the plastic cups.
This is one of the best, bang for bucks purchases, I have made for my 993.
Thanks,
#10
Instructor
Hi
Yes you can purchase the plastic cup bushes separately from Porsche, they are about $15 to $20 each.
I was going to replace mine, but though they would just fail again, so I replaced all the bits with a FD Golden Rod and the forward rod, the Forward rod will fix your above problem and you will not require the plastic cups.
This is one of the best, bang for bucks purchases, I have made for my 993.
Thanks,
Yes you can purchase the plastic cup bushes separately from Porsche, they are about $15 to $20 each.
I was going to replace mine, but though they would just fail again, so I replaced all the bits with a FD Golden Rod and the forward rod, the Forward rod will fix your above problem and you will not require the plastic cups.
This is one of the best, bang for bucks purchases, I have made for my 993.
Thanks,
However, the forward rod that the comes with the SSK is a little different for the C4 as it still uses one cup because of the way it is attached to the torque tube.
Don't discount the SSK as it only reduces the throw by about 3/4 inch.
#11
Rennlist Member
Replacing worn OEM parts will do it. Nothing last forever, not even aftermarket parts which in many cases, I usually find worse in quality.
If you want to view parts diagrams and track down part numbers, check out this link.
#12
Three Wheelin'
I had a summary problem with buzzing/rattling from the shift ****. Even after the as and golden rod. When I had originally pulled the shift **** off the top rubber bushing housed in the shift **** slipped sideways and I didn't even know it was there. I used a long pick tool to remove it from the shift ****. Slipped it on the shifter, rubbed it with a bit of dish soap and slid the **** back on. No more rattle. Hope yours is the same issue and as easily fixed.
#13
Racer
Thread Starter
I can't find the "rubber bushing". Did drive the car minus the shift **** and the buzz is gone. I think it may be the following part "Rubber Shim 931.424.111.00". I'll have to find a source tomorrow. Probably will also bite the bullet and do the goldenrod / SSK upgrade as well. None of it is any good without the rubber shim/bushing though since the rattle will still be present.
#14
Three Wheelin'
Summary is similar. Autocorrect victim. Anyway. The rubber bushing I pulled out of the **** and place on the shifter is a rectangular shaped bushing. I don't have the pet in front of me right now to check the part number. The rattle drove me nuts for a week after installing the ssk and goldenrod.
#15
Racer
Thread Starter
Have someone jiggle the shifter in the car while you observe the linkage below for play. You might find that the 4 small bushings that Van1 mentioned are worn.
Replacing worn OEM parts will do it. Nothing last forever, not even aftermarket parts which in many cases, I usually find worse in quality.
If you want to view parts diagrams and track down part numbers, check out this link.
Replacing worn OEM parts will do it. Nothing last forever, not even aftermarket parts which in many cases, I usually find worse in quality.
If you want to view parts diagrams and track down part numbers, check out this link.
--Brian