Just wondering if anybody has found similar problems with cams as me?
I have 2 dohc heads,one with 2ltr cams,the other 2.4ltr. With any combo of cams and heads,with the followers removed,I have found that the cams really bind through about 180 deg. of rotation.There is no signs of seizure on the head or cam journals,and everything is very clean.I only have a dial indictor gauge at the moment,so by removing the cam caps and measuring the cam bearing surface while rotating them,I found between 1 and 1.5 thou run out.I noticed this while trying to measure run out of my cam gears,as they are a home brewed set,other wise I may never have noticed.Any thoughts or comments?
Also wondering if anybody has run there cams without the locating pin?It would make solid cam gears fully adjustable.I don't think the pin has any other job other than making assembly easy with factory timming marks.With the fastening bolt and washer applying plenty of clamping force against the gear and the shoulder on the cam,I don't think you would have problems with the gear slipping and altering valve timming. I personaly have never seen a retaining bolt come loose,and even if it did,and if using the security of the factory pin,I doubt I would notice while driving until the bolt backed off enough to allow the gear to jump off the cam pin,and shut the engine down due to bent valves.
Risky modification,I completely agree,but one that I'm interested to know more about,perhaps somebody else could try it and let me know?
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