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Discussion Starter #1
If you where going to buy a new Comp cam custom hyd roller cam for a BBC would you add the optional mse polishing?
 

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If the application is for a street/strip vehicle that will see more street driving than track time, it may be a good investment as the process improves the lobe surfaces and that should result in a more more durable lobe.
 

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Discussion Starter #6 (Edited)
If the application is for a street/strip vehicle that will see more street driving than track time, it may be a good investment as the process improves the lobe surfaces and that should result in a more more durable lobe.
Street/strip

Is this a 8620 billet core or the Austemperd Ductile iron core?
8620 billet with everwear distributor gear
 

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If it's the only cam you plan on buying, probably is a good investment then.
 

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Looks like Comp's idea to enhance the durability of the lobe surfaces, with its MSE application, also has led to using improved grinding wheels and an improved grinding process as well, regardless if the roller cam goes through the MSE process.
 

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They do not have the flattest ring groove in the industry. If you just double plunge them using diamond tooling, they'll usually come in at around .00003, that's where mine were. But no one should charge extra for them. Then again, with ring side clearances in the .0005 range, you really need a flat surface or you'll likely weld the snot out of them.

Incidentally, most stock piston come in, these days, at .00001.
 
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