Valve spring/cup question

[flyfish]

My previous motor had a solid roller cam that required my Edelbrock heads to be machined for spring cups to hold the 1.55" springs. I am rebuilding my motor right now with a solid cam that will have springs that are only 1.46" in diameter. My question is, do I need smaller spring cups or no? I'm assuming yes, but I was not sure and wanted some info before just buying parts.

Thanks

 

[skrews]

Yes, if you want the springs to locate properly.

 

[Krooser]

Spring locators and spring cups are two different animals.

Locators register of the spring id to keep them in place. Spring cups are used to keep the springs from wearing a hole in the head.

I would think .009 difference in spring diameter would not be a problem....

 

[mbaird]

.09 but whos counting...