OEM Head gakset thickness

[GregO]

Thought the gen3 chamber volume was 57 cc.

Steeda has OEM Gen3 heads listed with chamber volume @ 55.0cc

https://www.steeda.com/ford-performance-m-6050-m50b-s550-head

55.0cc should get the CR as advertised.

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[bauern]

I don’t know but the mahle catalog definitely lists gen2 as 57 and gen3 as 59.

.040 and 57 cc would make it 11.8 though. .030 and 57 would be 12.1.

FP lists it as 55.9 in the catalog.

I get 11.96
calculated .012 below deck
.250 top ring land
.040 HG

 

[engineermike]

56 cc and .040 gets 11.99/1. Do we have a winner? Guess mahle is all wet?

 

[GregO]

56 cc and .040 gets 11.99/1. Do we have a winner? Guess mahle is all wet?

This was a fun thread for a change.

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