I use 5.200 for the size. Measure at all four corners!!
. . . . .
Customer cars that get race prepped at my shop often have 190# of compression, . . . . . I would assume that 200# on my guage is about 11.5 to one for a VW, with a legal cam.
If you measure the front five cars at most ITB races, they may have 200+ cranking compression. The Volvos had about 220, the BMW about 205.
YMMV , Mike Ogren
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I am assuming you're talking about MKII VW's, not the 84 GTI. As I understand it, this car can only run 9.0 to 1 compression legally.
Will 5.200 work for the JH engine (84 GTI) as well, to get it to 9.0?
Dave Webb
Bare Bones Racing
'84 VW GTI
#17 ITB
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