Cylinder Head 24-1003015-g (24-1003015-Г) Опции

[Jirijirkas]

I want to ask you. I bought the car with engine nr. 21A*443271* and cylinder head nr. 24-1003015-G. I read somewhere, that the both (engine and head) are intended for a compression ratio 6,7 (ei. for 76 octane petrol). I do not know, if the head has been modified for high octane petrol, but I suppose no.
So, what is my questions: If the head has been no modified yet, is it really intended for 76 oct. petrol? What type of spark plugs should I use for this head? If I want to use 95 oct. petrol, is the height, which I need to remove, 3,5 mm? And can I use the same spark plugs after modifiing?
Of course, before cutting the head, I want to ask service station for measuring the compression ration.

[Stirlitz]

Народ, не сбивайте с толку нашего товарища, который не знает русский. Он смотрит, что вы тут накалякали и, наверно, пытается переводить.

2 jirijirkas:

Most of the above in Russian is off-topic.