NRS ceramic corner seals

[glassman]

This just in from Pete:
Hello Sven,

Here are the compression results, along with applicable notes.

Engine: RR street port (new), 2 piece NRS Apex seal, Ceramic NRS corner seal. 9.0:1 engine compression ratio

Condition, Ambient temperature 22 deg C, 101.5kpa pressure

*0km on engine, tested from engine stand*

Rear Rotor average (picture include) 128psi

Front Rotor (picture included) 132psi

Comments: This is a noticeable increase in cranking compression over other same engines (new, same port timing but with one piece NRS seals and OEM corner seals)… On average the one piece RR engine develops about 95psi compression, this engine you can see is at the 130psi range (OEM sealed engines on same specification develop about 105~110psi).

This compression figure will go up once the seals are bedded in and when the engine is tested at operating temperature. It was tested without manifolds hooked up, but the influence give the very low air flow rate will be negligible. Further tests will be conducted after the engine has be initially fired up and then again after the run in period.