We have a .5 comp increase & 1.2mm over bore......Ya try and find any cast vw pistons 1mm over!!!! I have never seen them....in 20 years....there is few .25mm(.010)& lots of .50mm(.025in)
In a MK2 golf 8v if you have all the GTI stuff(rear disk), you can run 10.5:1 comp......If you have drums its 8.5:1..????.....????? may be a few more differences....Vented front rotors???? 9A gear box....
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