Is my Alfa V6 a Commodore - Alfa Romeo Forum
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(Post Link) post #1 of 16 Old 24-01-14 Thread Starter
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Is my Alfa V6 a Commodore

I have read that the 3.2L V6 engine in my 159 is produced by GM.
Can anyone tell me how closely related the engine is to the standard V6 installed in an Australian made Holden (Opel or Voxel I think) Commodore?
I assume the heads and valve gear are different? as I don't think the Commodore has 24v variable timing. I also think it has a larger displacement of 3.6L
But is the water pump and other bottom end stuff the same?
Parts for a very common Australian car would be much cheaper than a European import.
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The block is the same type as a Commodore V6 which is available in many different capacities e.g. 3.0 and 3.6. They are all manufactured in Port Melbourne afaik. I very much doubt anciliries like water pumps will be compatable.
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It is the same water pump btw.
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alot of the engine parts are manufactured by opel/saab/vauxhall which are all derivatives from GM.
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Don't worry. There is talk Alfa V6s will be powered by Ferrari engines in future. Same V6 Ferrari will power Maserati V6s also.

So there will be no more shame over the heritage of the V6s in your Alfas anymore.

If anyone asks what V6 it is just say its a Ferrari V6 built by Ferrari in Italy.

Enough said
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I discovered that the timing chains, tensioners and sprockets are all compatible. Engine used in some US tanks as well.
 
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It's a GM Hi-Feature engine but with extensive Alfa / FPT head development. It's a bloody good engine too
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Originally Posted by Squadrone Rosso View Post
It's a GM Hi-Feature engine but with extensive Alfa / FPT head development. It's a bloody good engine too
Well it is if you keep fresh oil in it, otherwise it's a 3 grand bill for new chains.
 
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So the problems with the timing chain relate to the oil?
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Yes

I just bought a v6 a couple of days ago, I've been looking for around 5 to 6 weeks for a good one and reading up extensively on the car during that time.

The general theme I was getting is that the service interval (millage between changes) for the oil change is too long and oil should be changed much more frequently.

Not doing this can lead to an increased chance of the timing chain to stretch and the EML to come on and big bills to fix....
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(Post Link) post #11 of 16 Old 01-07-14 Thread Starter
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Madness Coil Packs

How about the coild packs?
I just paid $350.00AU for a single, but I see on ebay I can get 6 to fit a Commodor for that price. But are they the same?
HOLDEN COMMODORE GM GENUINE VZ WL COIL VZ v6 COIL PACK 3.6L VZ V6 IGNITION COIL $320.00.
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One day i WILL own a VT-SS commodore.
Or clubsport.
Oh yes.
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(Post Link) post #13 of 16 Old 22-07-14 Thread Starter
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Just found this old post. Seems the Bosch coil packs from a Holden Commodore are the same
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Is there any chance the Alfa heads will fit the 3.6 block then?
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ooh good question that would be interesting, some people have the old 3.2 taken out to 3.8 but not sure that you can do this on the new holden block due to casting. Thickness and the ability to re size the bore or as per your suggestion so keen to know this also.

Mj
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(Post Link) post #16 of 16 Old 24-08-14 Thread Starter
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Ok my misfire/ stutter still exists. My next operation will be MAF clean, and possibly injector service.
Do we know if the injectors are the same as GM/Holden?
How about the in tank fuel pump and filter?
Or MAP and MAF sensors?
I also have an oil pressure switch fault. Is that the same as VZ Holden Commodore?
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