Rear Bump Stop Cups - Alfa Romeo Forum
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Rear Bump Stop Cups

Hey Folks! I'm in the process of refreshing my rear suspension on the GTV at the moment but I am having the common problem of replacing the Bump Stop Cups/Supports. Alfa Part Number 60615402, I need one for each side.

From what I have gathered, there is no more stock, and unlikely to be any more unless someone comes up with a manufacturing alternative....


So what do we do in the mean time? I have Koni Sports Adjustable Rear Shocks and brand new Eibach springs, which I have been assured by a Motor-Racing friend will be fine without the bump stop as the stiffer spring rate and slight drop in height will probably make hitting the "bump stop" a rareity.

But From what i have seen the Spring needs the cup to locate correctly on the rear subframe. so without it, your suspension isnt aligned perfectly.

So what do we do? My Bump Stop Cups are completely rotten from about halfway down to the bottom and both bum stops are loose (a 2.5" hole in the bottom of each one, so wont hold onto the bump stop at all!)

Do we really just fit rusty cups in place to locate the spring and run without the bump stops? Or do we go 2nd Hand, hoping they last a little while longer?
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I managed to get some really good used ones from a breaker Taylor for £20 a side. No rust on the cups at all, off a late model 2001. He didn't list them on eBay though as I don't think he realised how valuable they are! His eBay shop is called gtv_city worth a try...


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(Post Link) post #4 of 42 Old 22-07-16 Thread Starter
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WillieNillie, Ricambi are out of stock (says on their website) I have messaged Zeatek to see if they have any stock....

A chap was breaking a GTV on Facebook but said £20 a side for the spring cup wasnt worth his time! shame he was half way up the country otherwise I would have been around at the drop of a hat to grab them!
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I can't believe these have become so scarce I only bought a new set about two months ago when I rebuilt the rear suspension and I procrastinated about getting them for a while. Turns out mine were completely rotten, I'm sure I sourced them from eBay, I'll try and find the invoice to confirm who I bought them from to see if they still have stock .

Quick edit
I ordered them from an eBay Italian parts specialist , the sellers name is altautoparts, you could try contacting them .
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Last edited by Jonlane; 22-07-16 at 20:13.
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Hopefully Alfa will get into this soon. They must know they are almost a service part!!

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I often dream about mandrel bent hi temp burnt titanium tubing and billet aluminium spring pan replacements - with matching billet flower pots.

There was a set of rear springs on eBay £35 each which included the flowerpots.

I took the GTV in for 4-wheel alignment recently and was turned away/ told that rear springs were not seated properly, my flower pots had turned to dust. Luckily had a spare pair.
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Hey Taylor! The guy I suggested on eBay have listed these...the cups look in good order to me??

https://www.ebay.co.uk/itm/252476832136


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I Had a chat to Steve at Alternative Autos last week about these as mine are a pile of dust, he assured me they would be getting stock very shortly on these.
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(Post Link) post #11 of 42 Old 01-08-16 Thread Starter
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Stevie Alfa, Thanks for the heads up, After i viewed that listing it was taken down and relisted as just the bump stops. Which i then bought Its not Ideal buying old parts which are in fair condition (little bit of rust on one of them) but it will do for now until a new alternative is available!

Thanks for the help gents. Good to know some new ones could be in the pipeline!
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Stevie Alfa, Thanks for the heads up, After i viewed that listing it was taken down and relisted as just the bump stops. Which i then bought Its not Ideal buying old parts which are in fair condition (little bit of rust on one of them) but it will do for now until a new alternative is available!



Thanks for the help gents. Good to know some new ones could be in the pipeline!


Glad I could help mate...let me know if you find a source for new ones as I'll order some for the parts shelf!!!


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Glad I kept my spare ones now. I bought a pair for when I rebuilt the rear last year, but the ones already on the car were in surprisingly good condition. Still got the new ones complete with new bump stops and springs in my garage.
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Fine with your coils and shocks without the bump stops.
Removed them more than 10 years ago and haven't had a issue
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Fine with your coils and shocks without the bump stops.
Removed them more than 10 years ago and haven't had a issue
Yes but that does depend on what shock/spring combo you have as well as wheel/tyre sizes....especially under full compression.

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Are there any other vehicles that use similar cups in the rear suspension set up?
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Are there any other vehicles that use similar cups in the rear suspension set up?
Doubt it very much, the 916 rear suspension is fairly unique..
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Are there any other vehicles that use similar cups in the rear suspension set up?
Measure the diameter and get some enamel plant pots from the garden center
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What about making new ones with a 3D printer, anyone know if that's feasible?

They don't have to be that strong, only enough to take the occasional impact. Simple enough geometry too.

Find someone who's a wiz with a 3D printer and get him to knock out some prototypes..
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Would be easier to get some fabbed up. In 316 S/S ideally that will lend the rust problems
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It's whether you can get away without the taper? If a straight tube could be used they're much easier to make. The springs aren't tapered but they might compress at a slight angle, why else would Alfa have made the supports tapered?(because they can/did/are Alfa!?)

My guy's going to try to make me a straight pair but he's extremely busy & I've not currently got a car waiting for bump stops. He's also told me he's not interested in making any in quantity but would only help me out if I get stuck.....sorry.

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Measure the diameter and get some enamel plant pots from the garden center
Funnily enough a few guys I work with suggested the same


Quote:
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What about making new ones with a 3D printer, anyone know if that's feasible?

They don't have to be that strong, only enough to take the occasional impact. Simple enough geometry too.

Find someone who's a wiz with a 3D printer and get him to knock out some prototypes..
A colleague does 3D printing in his own time, hes willing to help me, but I need to provide him with a CAD model, which I can do, but I need a good/new Support Cup to measure up and correctly dimension.
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Quote:
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What about making new ones with a 3D printer, anyone know if that's feasible?

They don't have to be that strong, only enough to take the occasional impact. Simple enough geometry too.

Find someone who's a wiz with a 3D printer and get him to knock out some prototypes..
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A colleague does 3D printing in his own time, hes willing to help me, but I need to provide him with a CAD model, which I can do, but I need a good/new Support Cup to measure up and correctly dimension.
I think you'll find they take quite a hammering so need to be quite strong. I've got & seen some well 'dented' from the 'occasional impacts'!

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For sure, any prototypes should use appropriate materials, and be mechanically tested.

You could do a lot with basic tests.. e.g. drop weights on it to see how it stands up to impact. If you had a set of originals to compare with then you'd get an idea of where it's at.

With a 3D printer, I reckon you should be able to make a solid cross-section, which should improve impact strength also.

Fair bit of work in it in any case, but I don't see Alfa bothering to make new ones any time soon.
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They need to be tapered as the spring moves in an arc as the arm pivots up and down.
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