I Need Help Please Mystery broken Bushing - Alfa Romeo Bulletin Board & Forums
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post #1 of 16 (permalink) Old 07-29-2017, 11:40 AM Thread Starter
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I Need Help Please Mystery broken Bushing

My 1991 Spider dropped 1/2 of a broken bushing out on the street as I was leaving the neighbor hood. Can any one help me identify as I have the car up on jacks again and cannot seem to find where it came from. I have recently replaced the main water transfer hose and heater hoses but too small for those firewall bushings.
Attached are a few pictures for you to review. Thanks any help would be appreciated

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1991 Alfa Romeo Veloce Spider, 2015 Cooper S, 2008 Honda Ridgeline
1903 Rock Island 2HP Hit n Miss
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post #2 of 16 (permalink) Old 07-29-2017, 12:16 PM
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uhmm....difficult one.
it looks very small, what, maybe 1/2 inch across?
is it soft rubber or plastic?

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #3 of 16 (permalink) Old 07-29-2017, 12:36 PM Thread Starter
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More like 1 1/4" (31mm) across the top flange. The Flange is 4 mm deep and the body is 29mm. Looks like the center hole was around 11mm. Does any one know if the Throttle linkage may have had a cover or keeper over the connection going up to the throttle body? I dont remember seeing one when I removed the linkage to pull the throttle body but it was so tight hard to see anything from the top.....just feel around.

Thanks,
Bob

1991 Alfa Romeo Veloce Spider, 2015 Cooper S, 2008 Honda Ridgeline
1903 Rock Island 2HP Hit n Miss
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post #4 of 16 (permalink) Old 07-29-2017, 01:35 PM
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Try posting some more pictures with a coin or a pen in the near back ground to give a sense of size. Don't be so quick to assume it came from the engine bay. Does you car have a brake compensator in the back? Look there .

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post #5 of 16 (permalink) Old 07-29-2017, 02:29 PM Thread Starter
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Quote:
Originally Posted by Milanoguy View Post
Try posting some more pictures with a coin or a pen in the near back ground to give a sense of size. Don't be so quick to assume it came from the engine bay. Does you car have a brake compensator in the back? Look there .

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Thanks milanoguy
Here is another pic with coins for scaleName:  IMG_0274.jpg
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1903 Rock Island 2HP Hit n Miss
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post #6 of 16 (permalink) Old 07-29-2017, 02:33 PM
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Are you sure that it was not already on the road and your cars tyre picked it up and threw it making it appear to have been dropped by your car?
Pete

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post #7 of 16 (permalink) Old 07-29-2017, 02:49 PM Thread Starter
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Yeah you may be right but I think I heard it bounce around between the flex joint, drive shaft tunnel, and catalytic converter plate before seeing it bounce down the road in the rear view mirror. Looks like some sort of tapered rubber bushing that was soft at one time but just got hard over the years and failed.
That is a good thought though Thanks

1991 Alfa Romeo Veloce Spider, 2015 Cooper S, 2008 Honda Ridgeline
1903 Rock Island 2HP Hit n Miss
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post #8 of 16 (permalink) Old 07-29-2017, 02:56 PM Thread Starter
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I do not know if my 91 spider has a brake compensator. Where would it be located and I will check it out. The rubber is hard like it had exposed to grease or Brake Fluid

1991 Alfa Romeo Veloce Spider, 2015 Cooper S, 2008 Honda Ridgeline
1903 Rock Island 2HP Hit n Miss
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post #9 of 16 (permalink) Old 07-30-2017, 01:02 AM
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brake compensator is right above the main undercar fuel filter....but no bushing there.

probably just knocked up from the road....but, could be something a PO used to stop vibration somewhere (by just squashing it between something) and it finally fell out.

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #10 of 16 (permalink) Old 07-30-2017, 02:33 AM
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Dust cap for the clutch master cylinder?

Stuart
'57 Spider Veloce, '57 Lightweight, '60 SZ, '76 2000 Spider. '60 Sprint
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post #11 of 16 (permalink) Old 07-30-2017, 09:05 AM Thread Starter
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Thanks Stewart,

Checked the master cylinder dust cap and it is intact......
thanks again,
Bob
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post #12 of 16 (permalink) Old 07-30-2017, 08:16 PM
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ft or rear upper or lower Shock absorber bushing?
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post #13 of 16 (permalink) Old 07-30-2017, 08:29 PM
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Driveshaft bush (#9 on diagram)? Can't remember if that's metal or plastic.
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Tom

1963 Giulia Spider (1750 engine)
1974 GTV
1991 Spider
Former: 1987 Milano Gold
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post #14 of 16 (permalink) Old 07-31-2017, 06:03 AM Thread Starter
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Tom,
Yes I think you are right and makes perfect sense but hard to see. I have recently done a flex joint and drive shaft rebuild and balancing and I do not remember replacing that part as part of the rebuild kit.

Do you have any advice on replacement parts or installation. Does the flex joint have to be removed? If it does I will have to figure out a way to compress it.

Thanks
Bob

1991 Alfa Romeo Veloce Spider, 2015 Cooper S, 2008 Honda Ridgeline
1903 Rock Island 2HP Hit n Miss
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post #15 of 16 (permalink) Old 07-31-2017, 06:34 AM
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nope....not there yet

that 'top hat' bush is metal
http://www.alfabb.com/bb/forums/1247901-post6.html

imo: there is only one part on an S4 that looks remotely like that and that is the rubber bush where the Idle air valve slips into the inlet plenum.....and still it is not identical (and I can't see any way it could ever fall out on its own....)
http://www.alfabb.com/bb/forums/5564538-post2.html

EDIT: your car is not by chance an automatic spider?....that could be different and have something like your piece on the auto box/controls etc??

Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.

Last edited by spiderserie4; 07-31-2017 at 06:44 AM.
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