Bought a Spider (115), 1984. Some questions! Who has answers? - Alfa Romeo Bulletin Board & Forums
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post #1 of 18 (permalink) Old 08-14-2019, 01:01 PM Thread Starter
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Bought a Spider (115), 1984. Some questions! Who has answers?

Hi all,

Today I bought a nice red 115 Spider 2.0. It is great and I totally love it, but I have some technical questions. Hope you can help me out.

1. Speedo gives incorrect values, it's very optimistic. Possible to calibrate these, or in my case, just lower the value that's showing. Now show's around 15 mph over the driven speed.
2. The clutch is very low. If I want to pull away, it picks up immediately while just releasing the clutch by a few mm, no free play. Can you adjust this?
3. The main bearing thingy from the drive shaft is completely shot. The drive shaft hangs loose in the rubber and has lots of free play. Difficult job to change? What should I replace too when doing this?

Regards,

Marc
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post #2 of 18 (permalink) Old 08-14-2019, 02:05 PM
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Marc,
Welcome to the ALFABB (Alfa Romeo bulletin board). All you mentioned is a fixable DIY.
Speedo has a calibrated device under hood(bonnnet) that will prob need changing
The bearing (bush) can be completed at ease on a weekend
the clutch may have different issues to address but also doable. W/all that said, this is the right place to get ALL the answers Alfa.
Jump in, the water's fine. You'll find it very welcoming here. Get your post count up above 10 asap for more enjoyment, no worries.
By the way,, we love pictures in case you've not noticed.

welcome
Greg

"No chance, no destiny, no fate can circumvent, change or control the firm resolve of a determined soul"

73 Spider
80 BMW e21(Sold, gone to Houston)
79 Spider (sold)
78 Spider (sold, gone to U K)
Greg
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post #3 of 18 (permalink) Old 08-14-2019, 02:56 PM
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Quote:
Originally Posted by marc-f View Post
1. Speedo gives incorrect values, it's very optimistic. Possible to calibrate these, or in my case, just lower the value that's showing. Now show's around 15 mph over the driven speed.
What size wheels/tires do you have? That can throw off the speedo.

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2. The clutch is very low. If I want to pull away, it picks up immediately while just releasing the clutch by a few mm, no free play. Can you adjust this?
Not really adjustable. The pushrod at the master cylinder is adjustable but it is meant to be set to a specified length and left alone. Check that a DPO (Dumb Previous Owner) didn't mess with that adjustment. If the pushrod is correct, the next worry is that the weld at the pedal pivot has failed. Where does the clutch pedal sit relative to the brake pedal? It should be equal or slightly higher. If significantly lower the weld may have failed. If you can pull up on the clutch pedal that will likely confirm it (and break the weld even further...) See: https://www.alfabb.com/bb/forums/1142619-post108.html



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3. The main bearing thingy from the drive shaft is completely shot. The drive shaft hangs loose in the rubber and has lots of free play. Difficult job to change? What should I replace too when doing this?
The center bearing is mounted in a fairly loose rubber housing - so being able to move it around a bit may be normal. Check the rubber donuts while you're in there. Any splits/cracks or missing chunks means replace now!
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- - Eric
don't read this
~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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Last edited by ghnl; 08-14-2019 at 03:47 PM.
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post #4 of 18 (permalink) Old 08-14-2019, 03:46 PM
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Oh, my - I forgot to add a welcome! Welcome! Now you need to know about our unwritten rule regarding photos. We like photos so we insist you post some. They could even be of your Spider...
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- - Eric
don't read this
~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
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post #5 of 18 (permalink) Old 08-15-2019, 07:22 AM Thread Starter
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Thanks for the replies gents.

Tire size is 185/70/14.

About the clutch, it's same level as brake pedal. So i think it could be something in the clutch cylinder.

More annoyingly is the driveline vibration. I will give some more details.

Happens only a 2-3000 rpm, when on load. So in neutral, no vibration, therefore i don't think it's engine related. I can move the axle around 0.5 inch in the rubber mounting, seems a lot to me, right?! New support rubber and main bearing would fix some of the complaints, but that's my guess…

Picture of the car attached. Greetings from Holland!
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post #6 of 18 (permalink) Old 08-15-2019, 08:14 AM
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Welcom Marc,

you found the best spot to get all the answers to any of your questions, where in the Netherlands are you located ?
Nice looking car btw ;-)


Frans
Dordrecht

'86 Quad Spider
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post #7 of 18 (permalink) Old 08-15-2019, 08:24 AM
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Quote:
Originally Posted by marc-f View Post
Hi all,

Today I bought a nice red 115 Spider 2.0. It is great and I totally love it, but I have some technical questions. Hope you can help me out.

3. The main bearing thingy from the drive shaft is completely shot. The drive shaft hangs loose in the rubber and has lots of free play. Difficult job to change? What should I replace too when doing this?

Regards,

Marc
The carrier bearing on the driveshaft is pressed on. I took mine to a drive shaft shop and had them do it. It took less than a day and was very reasonable ($25). You'll want to check the rear tranny mount while you have the driveshaft out along with the U-joints and guibo. Mark the position of the driveshaft BEFORE you disconnect it to prevent inducing any vibration once reassembled.

Chuck
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post #8 of 18 (permalink) Old 08-15-2019, 12:56 PM
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Welcome!

Congrats on your new purchase. This site is very active and has some of the best Alfa lovers here! Great advice given so far from the others. Here's my two cents.

1. I own a few Spiders and only one has an accurate speedometer reading (my 1980). All the others are "optomistic", as you put it!
2. Low clutch - the clutch is hydraulic, so my guess (and it's a guess) is that the problem lies in the master or slave. Maybe you'll get lucky and find it just needs to be bled. The guys here may be able to elaborate.
3. The play on your center bearing is too high. Years ago, I had a Volvo 242 that had a bad center bearing and the replacement part was expensive. I guess I could've just replaced the bearing itself, but instead I went to the junk yard and bought a whole new piece. Also, I saw a mention of the guibo. In cast you don't know, it's the piece that looks like a big rubber donuty hexagon that's between the transmission and the drive shaft. If you're taking the drive shaft off, check the guibo and replace if needed.

One other thing I recommend checking is the rear trunion (the tube that sits above the rear axle. The bushings at the end go bad and the trunion gets sloppy. It'll change the handing of your car, so if the bushing are bad, replace them.

I wish you many, many, many miles of enjoyment from your Alfa Spider!

Greg
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post #9 of 18 (permalink) Old 08-15-2019, 01:15 PM
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Yes, a picture would go a long way.

1 is the carrier bearing that is pressed on. If you have a 10 ton press you might get it off. Some folks have successfully used a hammer to remove it but much easier to have a driveshaft shop do it the right way.
2 is the guibo or rubber donut. If it hasn't been replaced in a few years, it's a good idea to do it while the driveshaft is out. Don't release the band until it's in place.
3 is the rear tranny mount. It should be tight with very little movement. If your carrier bearing is floppy around, there is a good chance the tranny mount is shot as well. You don't have to pull the tranny to do it, but you will need a two arm 5 ton puller and a metal pipe cap. There's a thread somewhere on here about doing it.
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post #10 of 18 (permalink) Old 08-16-2019, 12:33 AM Thread Starter
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Yes, a picture would go a long way.

1 is the carrier bearing that is pressed on. If you have a 10 ton press you might get it off. Some folks have successfully used a hammer to remove it but much easier to have a driveshaft shop do it the right way.
2 is the guibo or rubber donut. If it hasn't been replaced in a few years, it's a good idea to do it while the driveshaft is out. Don't release the band until it's in place.
3 is the rear tranny mount. It should be tight with very little movement. If your carrier bearing is floppy around, there is a good chance the tranny mount is shot as well. You don't have to pull the tranny to do it, but you will need a two arm 5 ton puller and a metal pipe cap. There's a thread somewhere on here about doing it.
Thank you for the image. Gives me a much clearer view of what it all looks like.

I will keep that in mind while checking it out this weekend.

Isn’t it wise to also change no. 4? Seems also a bearing right?
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post #11 of 18 (permalink) Old 08-16-2019, 12:13 PM Thread Starter
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I made a quick video to show the play on the support of the main bearing. It’s quite a lot to my opinion...

YouTube link: https://youtu.be/r-HSveiYifI

What do you guys think?
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post #12 of 18 (permalink) Old 08-17-2019, 01:59 PM Thread Starter
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Ok, so today went to the Italian classic car specialist. Works on all old Alfa Romeo’s (lots of spiders) and other Italian cars.

He drove the car and looked at the drive shaft. The problem is not there he said.

He is very convinced it’s actually the exhaust that is bolted to the chassis/ body of the car at the tranny side. Since there is no flexible piece it transfers all the vibrations to the body and you feel that.

Is that a more common issue?

Drive shaft, u joint and the donut were fine!

Marc
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post #13 of 18 (permalink) Old 08-18-2019, 06:30 AM
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Thanks for sending the youtube. Did the mechanic say the "carrier bearing" was ok?
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post #14 of 18 (permalink) Old 08-18-2019, 08:19 AM Thread Starter
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Yes, he checked the drive axle. Was all OK. Carrier bearing was fine.

Marc
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post #15 of 18 (permalink) Old 08-18-2019, 09:31 AM
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Originally Posted by marc-f View Post
Yes, he checked the drive axle. Was all OK. Carrier bearing was fine.

Marc
OK? I would definitely not run with a carrier bearing in that condition in my car
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