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Discussion Starter #1
Hello I am new to your forum, I wonder if someone is so kind and please tell me the right way to do the valve clerance on alfa spider 2000 102 series.
thanks in advance
 

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Hmmm. Most modern Alfas use a similar procedure. The 102-2000, like other Alfas since about 1958, uses a special shim that fits over the tip of the valve stem, and under the “bucket” which serves as the contact tappet for the cam.

One must take careful measurements using feeler gauges between the tappet faces and the backside of the cam lobes. Then, you remove both cams, and the tappets, measure the thickness of the shim, select other shims from your large and expensive selection of shims calculated to correct the gap, reassemble everything, measure again, and repeat the shim changing as required.

Under no circumstances should you grind the tip of the valve stem.

There are numerous other steps I’ve not described, but the above is the gist.

There are some steps that, if you do them wrong, can lead to the need to dismantle the engine.

My recommendation is that you find an Alfa specialist shop to do it, or at least assist you.

the shims needed are for 10MM valve stems. Most other Alfas use 9MM shims, so the 10MM are hard to find.

Note that if you have some of the modern cam modifications, the correct clearance may be different than called out in the factory manual.
 

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I agree with what Don wrote above but I think more information from you would be helpful.
Does your car now run? Are you in the process of rebuilding your engine? Have you much experience with Alfa engines?

Perhaps all you need to do is 'check' your valve clearances. Alfa Romeo engine valve clearances are usually remarkably stable. Checking clearances is pretty straight forward, if you have the proper tools; changing the clearances is a bit more complicated. I would recommend you find an Alfa club buddy who has done this job before, to look over your shoulder. There are various pit falls that can ruin your day; like dropping a link from the timing chain down inside your engine or hitting a valve with a piston...

Here are a couple of links with a similar but different engine:

 

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Discussion Starter #4
Thanks for the answers. Let me just say a little about the project. I'm restoring the engine 2000 102 series, I got it on the pallet and I don't know what it was or if it worked. when i tore it up i saw that there was a problem on the main shaft bearings and one of the crankshaft bearings. now i have fixed this, but i also put all the valves out so that the valve seats will be repaired and then they will have to be adjusted. so i ask what are the valve clearance at all so i will adjust this if necessary.
thanks
 

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The relevant information about valve clearances and cup dimensions is in the engine shop manual Pub. 801:
Pub. No. 801 - p.021.jpg
Pub. No. 801 - p.022.jpg
Pub. No. 801 - p.030.jpg
 

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I have obtained them from Heinbrand, and had them fabricated in Australia. There are others.

why did you buy a 102 engine? Do you have a car?
 
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