Hello everybody,
I am new to this forum and I am hoping to get some advice from experienced KZ engine builders.
I have a 1976 KZ 900 A-4. I modified the engine as follows:
Replaced the stock cylinder block with a KZ 1000 block; had the cylinders bored and installed a 1075cc MTC piston kit. I then had the cylinder head worked on by replacing the valves, guides, springs, etc.
I then installed .385 lift cams, as was recommended by the shop that did the machining (Cope Racing). Well, I started the engine for the first time yesterday and I heard a very loud clicking sound from the top of the engine.
So my question is: is a .385 lift cam tall enough to cause the valves to hit the pistons? Both Cope and the cam manufacturer stated it was NOT, but I would like some other opinions.
I ran the engine twice, both time for about 30 seconds at idle. With the noise this loud I don't want to run it again until I know what the problem is. For all I know, I may have bent the valves already...
Any input would be appreciated.
Post edited by: Scoot Jockey, at: 2006/06/19 12:29
Post edited by: Scoot Jockey, at: 2006/06/19 12:29