THe question deals with my 200 in my Falcon. I just put in a Clifford 270M cam and it appears that the springs are 0.090 to 0.150+ away from a complete coil bind (I took another old 200 spring and clamped it in a vise and measured the height (difficult to measure the height on the engine since the machined coil spring mounting pads on the head are only minimally larger than the spring diameter). THe .090 dimmension may be a bit conservative.
Am I correct in presuming that this is an acceptable dimension? How much faster will a spring fatigue when it is 0.100 from coil bind? I am a bit sensitive to this issue - I run a Delta cam in my Isuzu Amigo and there was this engine rattle that started at about 40,000 miles after the cam swap that I could not find (rattle lasted about 25,000 miles!!!). THen one day there was a bit of a bang when one of the pistons was ventilated: http://i290.photobucket.com/albums/ll27 ... 280018.jpg http://i290.photobucket.com/albums/ll27 ... 280023.jpg Completely changed my project agenda that afternoon. I do not want to deal with the same on the Falcon. Springs are cheap enough that I wouldn't mind replacing them every ?? thousand miles. Would this be every 20K, or 40K or ??K miles?
Am I correct in presuming that this is an acceptable dimension? How much faster will a spring fatigue when it is 0.100 from coil bind? I am a bit sensitive to this issue - I run a Delta cam in my Isuzu Amigo and there was this engine rattle that started at about 40,000 miles after the cam swap that I could not find (rattle lasted about 25,000 miles!!!). THen one day there was a bit of a bang when one of the pistons was ventilated: http://i290.photobucket.com/albums/ll27 ... 280018.jpg http://i290.photobucket.com/albums/ll27 ... 280023.jpg Completely changed my project agenda that afternoon. I do not want to deal with the same on the Falcon. Springs are cheap enough that I wouldn't mind replacing them every ?? thousand miles. Would this be every 20K, or 40K or ??K miles?
