Volvo 530 head differences

Hello,

I have been asking this one for a while and no one seems to have the answer.

Does anybody know what is the purpose of these indents inside the 530 head.

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Is a 530 head from 93 non turbo

the indent on the side opposite to the sparkplug is much smaller than in

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which is also 530 head from 91turbo

  1. Are the indents different because one head was on a non turbo (smaller indents) and the other two were on a turbo.

  1. Are the indents different because they updated the molds?

  2. Why are they there in the first place?

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs

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Ontario

Reply to
Boris Mohar
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My guess is that they are reference points cast into the head for measuring when machining the head.

Harold

Reply to
Grtdane

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