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Old 07-11-2008, 06:28 PM
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Question about Roller cam wear.

Hello guys I have two questions about a crane powermax hydraulic roller cam I have. I only had about a couple hundredd miles on it till I took it out and replaced it with a comp big thumpr roller cam.

I was wondering how do they wear pattern wise? There are scratch marks where the roller wheels ran across the ramps but its not like that all the way around just where the lifter starts up at the ramp and then at the top then where is goes down then its no longer there till it does the same again on the opposite side.

Is that normally how they wear? Also I am planing on building a better motor then I have now and migh want to use the powemax cam instead of the big thumpr comp cam. What should I do to keep it preserved till next summer? I have it sitting in my old comp cam box and the plastic bag it came in but I don't have any type of oil or anything on it.

It has been setting in my bedroom. What should I put on it such as oil or wd 40 spray etc?

Thanks Eric

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Old 07-11-2008, 06:40 PM
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Quote:
Originally Posted by eric32
Hello guys I have two questions about a crane powermax hydraulic roller cam I have. I only had about a couple hundredd miles on it till I took it out and replaced it with a comp big thumpr roller cam.

I was wondering how do they wear pattern wise? There are scratch marks where the roller wheels ran across the ramps but its not like that all the way around just where the lifter starts up at the ramp and then at the top then where is goes down then its no longer there till it does the same again on the opposite side.

Is that normally how they wear? Also I am planing on building a better motor then I have now and migh want to use the powemax cam instead of the big thumpr comp cam. What should I do to keep it preserved till next summer? I have it sitting in my old comp cam box and the plastic bag it came in but I don't have any type of oil or anything on it.

It has been setting in my bedroom. What should I put on it such as oil or wd 40 spray etc?

Thanks Eric

Sounds normal, the heavy load is on the ramps and the lobe. This is where the cam has to accelerate and de-accelerate all the weights and resistances involved. On the back side or heel of the lobe, the there are no forces beside rotation speed, the spring force is carried by the valve seatat this point so one should see little to no wear on the backside.

Zip Lock bagging the parts with WD40 should be fine for their protection.

Bogie
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Old 07-11-2008, 08:52 PM
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On the rust prevention thing...

I use a product called Hoppe's MDL. (pron. Hops) It's for firearms and protects the bluing (virtually bare metal) beautifully. Cranks, cams and cylinder bores really like this stuff.

Me likes too.
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Old 07-12-2008, 10:54 PM
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LPS-3 in a greenish blue spray can
Used extensively in the aviation business.
I have car cams, blocks, rods, etc. protected with it for more than 10 years that look like I sprayed them yesterday.
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Old 07-13-2008, 02:17 AM
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WD40 will allow your metal parts to rust within a few weeks, often sooner.
It will not protect the machined surfaces, long term.
I use Rust Check

Forgot about LPS products. http://www.lpslabs.com/

Last edited by F-BIRD'88; 07-13-2008 at 02:29 AM.
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