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Today I did a spirited test drive with my newly refreshed Driveline. Wow what a Big Big Improvement!

I had been slowly improving the mechanics on the car and recently began chasing the shudder/knocking in the driveline. I had already replaced the Motor and Transmission mounts which certainly helped but I decided it was time to replaced the Giubo, Center Bearing/Support, Top Hat Bushing and U- Joints.

My first test drive wasn't so great, I could hear the center bearing shuddering on takeoff even more than before. Disappointed I did some research and called Jon at Alfa Parts regarding a driveline specialist. He suggested Driveline Services in San Leandro and I gave them a call to setup and appointment. They were super cool on the phone and we discussed my symptoms and they suggested my issue could be related to Deflection in the Giubo and suggested I shim the Center Bearing or Transmission Mount to get the first driveshaft more in line with the transmission. I had a suspected this may be an issue but his confirmation and advice set me down the right path.

I put the go pro under the car so I could visually see what was happening as I made several adjustments and when I added shims to the center bearing things smoothed right out. I was always a little hesitant when pulling away from a stop and now I can drive in a much more confident and spirited manner :)

If you're interested, the video below shows the Center Bearing/U-Joint from the POV of the transmission mount. Ignore my odd shifting, this is the first test drive with newly refreshed clutch hydraulics.


C
 

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Real cool way to watch the drive train. Looks great and seams real smooth.
In the last video drive shaft to rear end there was a lot of play. Does it still have the play in it. If yeas what is the normal amount of play allowed?


Ken Smith
 

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In the last video drive shaft to rear end there was a lot of play. Does it still have the play in it. If yeas what is the normal amount of play allowed?
I haven't made any tweaks since making the video, and to be honest I'm not sure my adjustment is 100% correct or complete. I'm just thrilled, relieved and excited that after almost a dozen test drives and micro adjustments it drove really smooth this evening. I think what you may be seeing is the splined rear shaft sliding in and out of the yoke on the forward shaft. I believe that is normal.

I'm hoping one of our fellow Alfisti will chime in with a more technical way to ensure the first driveshaft is in alignment with the output shaft of the transmission.
 

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Enjoyed getting out in my spider on a cool, sunny day here in Maryland, stopping to get a few pictures to enter the AROC COncorso Virtuale Italiano Dell’automobile 2020. Always looking for a "reason" to get out and drive my spider!
 

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Fitted some 3D printed Weber trumpets.

Wanted to try them before forking out for a stainless steel set.

Might try adding a tail pipe with no back silencer to see if it improves things further.

AndyS

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what part?
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made another!! cardboard template for the transmission mount.. not easy 10 degree layover to drivers side.... got to love cardboard thuo
 

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Alfa Romeo Spider 2.0, Alfa Romeo 166 3.0
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Removed the rear shock absorbers yesterday and was very happy to find that the Alfa engineers thought about changing shocks more often enough to make a hole so you can pull them from the inside of the car instead of having to get the rear springs out of the car to do it.
 

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Alfa Romeo Spider 2.0, Alfa Romeo 166 3.0
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Just putting the shocks together and wonder how much torque I should use when tightening the ends of the shocks, to compress the rubber I mean?
 

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I just wind on enough to just start to squash the rubber. I doubt there is a torque setting, more a case of 'feels' right. You dont want the shock absorber rattling around, but you do need some compliance in the rubber.
 

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So this happened today. 71 1750. Same as my first Alfa short of color. Car was owned since 74. 53k miles. All I can say is wow, cant wait to drop the top n drive it.
 

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Finished rebuild of rear suspension and just started on the front. Can't wait to get her back on the road. A lot of oil, I think the distributor o-ring is shot.
Just changed my 'O' ring, the one I got from Classic Alfa seemed too skinny so I got this one:


A nice tight fit. However, in the end I believe the oil leak was actually from the fuel pump gasket, changed that too and it all looks OK.
 
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