Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: Valve springs
          
   
   

Reply To Thread
Results 1 to 3 of 3
  1. #1
    CobraV8 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2004
    Location
    Bavaria
    Car Year, Make, Model: Cobra kit car & '79 Mustang
    Posts
    9

    Question Valve springs

     



    I'm building a supercharged engine for the street. In the book "Do it yourself guide to street supercharging" the author Pat Ganahl recommends installing stiffer valve springs to ensure the blower pressure won't hang an intake valve open what would cause a backfire into the blower.

    The engine I'm building has a mild street camshaft and won't be revved past 5500rpm so there is no need for the stiffer springs other than to make sure the intake valves will fully close under high boost.

    This means the stiffer valve springs practically are not necessary on the exhaust side. Can I just install new intake valve springs and leave the stock exhaust valve springs in place? This way it will require less horsepower to open the valves as it would if I installed the stiffer intake and exhaust springs.

    Will it work this way or will it cause problems (like uneven camshaft wear or something worse)??

    Thanks,

    Simon

  2. #2
    vara4's Avatar
    vara4 is offline CHR Member Visit my Photo Gallery
    Join Date
    Dec 2003
    Location
    Pahrump
    Car Year, Make, Model: 1947 International Pick Up
    Posts
    3,188

    CobraV8; I would just buy a cam kit that's recomended for it. It will probably have a duel spring set up. Why take a chance on messing up the Engine. And if you put a heavier spring on the cam, It may not be able to handle the pressure and flatten a lobe,or wear the cam funny. I wouldn't take short cuts, sounds like you may have some money involved in this and I would sure hate to see you have a valve hang up and smack a piston.


    Vegas
    Last edited by vara4; 02-12-2004 at 04:01 AM.

  3. #3
    vara4's Avatar
    vara4 is offline CHR Member Visit my Photo Gallery
    Join Date
    Dec 2003
    Location
    Pahrump
    Car Year, Make, Model: 1947 International Pick Up
    Posts
    3,188

    Dang You Streets; Your days a Comming.
    That stupid website got me again!

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink