[Grady Clay]

listen to steve

Listen to Steve

LISTEN TO STEVE

Seriously, the 93 mm cylinder wall just plain was too thin. The structure of the cylinder under these conditions was not up to the task. The 92 mm cylinders are sufficient.

For enjoyment (even single plug) the 90 mm ’73 911RS (8.5:1 CR) Nicksil are very suitable. For outrageous performance the 92 mm 911RSR (at about 11.5:1 CR with non-RSR heads) work well but it takes a lot of work. These are also currently difficult to source.

Best,
Grady