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Discussion Starter #1
Hi. I'm planning on rebuilding the suspension on my 1974 Spider and I have a question about springs. I may end up replacing the springs because with 50 pounds or so in the trunk (in addition to the spare, jack, etc) the rear of the car sags noticeably. I have a 1990 Spider and was wondering if I can transplant the front and rear springs from that to the 74. On the Classic Alfa site, they sell Series 2 replacement springs and Series 3 springs. I was wondering what the difference is between the two and if it is possible or desirable to swap springs. I've done a search but can't really find anything. Another possibility is to just buy a set of Series 2 rear springs. Thanks!
 

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For an S2 spider, as i recall there were 2 sets of rear springs available -- one for cars without hardtop option, and one for cars with hardtop option. I put the non-hardtop springs on mine and it raised the rear to be within trim spec of the suspension (as I recall). Your 74 springs are likely just sagged out. But I also ask -- why are you loading 50 lbs into the trunk? Bag of potatoes coming home from the farmers market (thats the only way we got em where I grew up) -- 50 lb burlap bag!
 

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I have some OE spacers that I just removed from the rear of my S3. That may be a viable option....
 

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For springs, look at speedway motors, great collection and low price, 1150 inch pounds on the front and 180 inch pounds on the rear, this will give you a great balance, and very unlikely you will bottom out the car
While I was working at alfetta motors. I recommend this set up and the ones I installed loved the ride
 

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Discussion Starter #5
Thanks for the help!
@goats, well - I do try to keep the potato hauling to a minimum. LOL. I bought the car in Minnesota and loaded the poor car up with tools and spare parts and drove it back to Maryland. That's when I noticed.
@SkiBum -- Thanks, the spacers are a good idea. If the current springs are just saggy I'd like to fix them, I think.
@bianchi2 -- thanks. I'm a wus and want to keep the ride a little more compliant, but I bet that combination has to handle great.

My theory/guess was that the Series 3 springs might have just a little higher rate than the springs for a Series 2, since the later cars a little heavier. And since I have 1990 that's about to go to get parted out (by the scrap yard if not me) I wondered if the springs from that would be a mild upgrade.
 

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Measuring the springs will give you the answer. Wire diameter, coil diameter and the number of coils are the variables.
 
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