LS7 engine problem

[Bill Musarra]

Have you looked at the plug from the affected cylinder? Does the ceramic cone look different from the other plugs. If it has a crystalline or grainy appearance(which would be different from the others), then I would suspect that the water got into the cylinder from the gasket leak. The problem is one that comes up with the alternative fuel guys trying to inject steam or fog from ultrasonic generators seen in fountain displays. When there is too much steam or water the exhaust temps will skyrocket, the expanding steam will lean out that cylinder, and all these together will melt the piston(s) and also the plugs. If you don't find any parts in the muffler or maybe just tiny parts(more like solder balls) in the oil pan, then I would say your problem was water!!!!

Bill

[stevet695]

New Engine, fresh of the dyno, ready to install.

Engine builder peter knight. of www.knightracing.com

looking forward to trying this spec engine out.

[Darren]

Pete's address should be

Knight Racing Services

Darren

[Johan]

Sounds like a grear Christmas

[stevet695]

SORRY ABOUT THE ADDRESS

www.knightracingservices.co.uk a very helpfull knowlageble guy.

regards steve

[stevet695]

The engine has been modified slightly to a good race spec. remapped on the Dyno to suit the new cam.

the results from the dyno are attached

Steve

[Johan]

yup, that should do it

[stevet695]

looking forward to doing some testing, should be interesting to compare the difference in engines though.