Quote:
Originally Posted by Henry Schmidt
The theory is that you want gasses trapped under the second ring to escape without pressuring the top ring.
|
Ah, so that is the reason! Thanks! 
__________________
Magnus
911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI.
911T Coupe -69, 3.6, G50, "RSR", track day.
924 -79 Rat Rod EFI/Turbo 375whp@1.85bar.
931 -79 under total restoration.
|