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higher compression pistons?

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electrichoodeclipse

electrichoodeclipse

Probationary Member
10
0
Feb 14, 2013
Electric City, Washington
So i have a 4g37 1.8 an while redoing the head on the car a friend of mine noted that the pistons arnt flat top an have raised areas...i was just wondering if these were the stock pistons or some sort of higher compression pistons?
 
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