Re: 105-series head interchange

[Simon Favre <simon@domain.elided>]

Careful now, the 1800 in an Alfa 75 is not the same as a 1750 in a 105
car. I believe the biggest reason not to do what the original poster asked
about is that the studs don't line up. The 1600 and 1750 are similar, but
the 2000 is a bigger motor. I used a 1600 head gasket on a 1750 that had
sealing problems, so those line up. I'm fairly sure the 2000 studs are
farther apart, and won't line up. A 2000 head on a 1600 block is a no-go,
AFAIK.

>>He currently has a 1600 engine, but he has a spare almost-new head from a
>>2000 GTV.
>>The question is: he wants to fit 2000 head to 1600 block, and isn't sure
>>whether this would be a performance upgrade or downgrade. Both the block and
>>the heads are original euro-spec.
>
>My mechanic (he often goes to Pag) told me he once put a 2000 head on 1800
>engine in 75 (milano). Due to larger valves from 2000 he claimed the power
>increased significantly.

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