I know why. 12:1 piston, 25+year old parts. The system is only as good as the weakest link. This is what happens when you go hopping up this old stuff without going over it real well. There will be other parts that will break as well, expect it. LOL
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90