News:

  • Home
  • Help
  • Chat
  • Login
  • Register

    • « previous next »
    Pages: [1]

    Author Topic: Porting  (Read 3895 times)

    Offline airfueleddie

    • Jr. Member
    • **
    • Posts: 463
    Porting
    « on: July 25, 2008 - 07:30:18 AM »
    Drag Racers I need your help. This is a subject I know nothing about. Please educate me. What is the difference between Alcohol Ports and gasoline ports????? I know for a fact that there is a difference because when MoPar released the Sprint Car W-9&W-8 small block race heads they offered em in alcohol and gas. Is the chamber the only difference? or is the intake ports or exhaust ports?? Another things are the Stage V Hemi Heads in Alcohol and gas. Whats the difference in porting? Can you use a port, intake or exhaust, that was desigend for alcohol and use it with gasoline? Thanks much for any help or feedback on this , I am going to purchase a new set of either Eds RPM 440's, possibly Indy 440EZ A-Body 440 heads, or maybe the excellent 440source Stealth heads, but I have always had excellent results with Eds products.   Eddie :biggrin:
    « Last Edit: July 25, 2008 - 07:34:37 AM by airfueleddie »
    Logged


    Offline Chryco Psycho

    • Administrator
    • C-C.com Guru
    • *****
    • Posts: 36620
    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: Porting
    « Reply #1 on: July 25, 2008 - 11:33:22 AM »
    no difference that I am aware of in the porting other than you need approx 40% more fuel volume with alcohol, the compression always needs to be much higher with alcohol as well around 13:1
    Logged

    Challenger - You`ll wish You Hadn`t

    Offline airfueleddie

    • Jr. Member
    • **
    • Posts: 463
    Re: Porting
    « Reply #2 on: July 25, 2008 - 01:24:41 PM »
    Quote from: Chryco Psycho on July 25, 2008 - 11:33:22 AM
    no difference that I am aware of in the porting other than you need approx 40% more fuel volume with alcohol, the compression always needs to be much higher with alcohol as well around 13:1
    I see, so the difference in 'Alcohol Heads" are only the combustion chambers right? Probably very shallow? and easy to build compression with, very small chambers ect..?? Since I am using primarily street heads, I guess I should shoot for as much Comp as I can. This will probably figure in to my camshaft selection as well. CCC!!!Thanks Chryco.
    Logged

    Offline moper

    • Resident
    • *****
    • Posts: 2368
    Re: Porting
    « Reply #3 on: September 02, 2008 - 05:37:50 PM »
    Not sure, but I think it has to do with the exhaust seat material. The Alcohol versions IIRC use Berylium seats, that take very special safety precautions when being machined. I forget which ones had them. Call Ryan at Shady Dell Speed Shop in PA. Google it for the contact info...
    Logged

    nivvy

    • Guest
    Re: Porting
    « Reply #4 on: September 02, 2008 - 05:50:08 PM »
    Logged

    Offline airfueleddie

    • Jr. Member
    • **
    • Posts: 463
    Re: Porting
    « Reply #5 on: September 04, 2008 - 08:03:14 AM »
    Yeah, thanks Moper/Stroker! I wouldnt want that stuff in my lungs! I think it would be wise to contact Ryan J at Shady Dell. :thumbsup:
    Logged
    Pages: [1]
    « previous next »