Paul,

I am shipping my rotor housings to you tommorow C/O Lightspeed Eng.  Also $300 to you at your address.

When I looked at the housings I was surprised to see that the trailing spark plug hole, going into the combustion chamber, was only about 4 mm in dia. The leading spark plug hole, going into the combustion chamber, was about 12 mm, the dia. of the spark plug.  Please excuse my ignorance, but would you explain to me why the difference?

The engine, to my untrained eye looks to be in very good condition.  However, the plugs wrere wet and dirty and there was quite a build up of carbon on both rotors. Is this only from running too rich, or can there be other problems.

Also a request:  Would you repost your info on an apex seal box and the labels.  Thanks.

Gene Sandburg


When the apex seal passes over that hole there is a momentary leak between chambers which reduces the pressure in the combustion chamber reducing the HP slightly. That is why the hole is so small.

Paul Lasmar