Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - SBC valve stem seals and spring compressor
View Single Post
  #10 (permalink)  
Old 12-15-2010, 02:33 PM
Silverback's Avatar
Silverback Silverback is offline
Boost Retard
Last photo:
Join Date: Mar 2007
Location: DC Metro
Posts: 404
Wiki Edits: 0

Thanks: 1
Thanked 12 Times in 9 Posts
The answer about pressure vs vacuum is the deal with using umbrella seals.

Usually, iron heads do better with iron guides, aluminum do better with bronze because of their different expansion rates...
Reply With Quote