Originally Posted by
flybyjohn
I realize the silicone is destryed by model diesel fuel however this design has been used on a mvvs 49 diesel conversion and reports are that it lasts a year of compitition use before needing replacement. I origonally found the design in this thread.
http://www.rcuniverse.com/forum/ever...on-design.html
Yeah that was posted by me and originally by Keith Renecle from South Africa - he is contactable over at Stunt Hangar forums if you need to ask him about the design.
The design worked well in a control line stunt model and I doubt that the engine was ever used in wide open throttle mode, so he 'got away' with it.
Cracked lower flanges have been reported on before (RJL heads if I remember correctly) and probably need to be thicker if you have issues.