User Login    
 + Register
  • Main navigation
Main Menu
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search

Advanced Search
Google Ad

Browsing this Thread:   1 Anonymous Users





hotrod88
heads
#1
Home away from home
Joined:
2005/6/20 4:24
From Alabama, U.S.A.
Group:
Registered Users
Posts: 522
Offline
o.k. I have read all the info in the tech section on the A-14 heads , I have three diff. heads here --- oval port open chamber, round port open chamber, & round port closed chamber , which one would u use on a daily driver with a good punch to it? give me all your opinions.--- also going to use the higher compression stock pistons of the two A-14's

Posted on: 2005/10/16 23:58
Transfer the post to other applications Transfer


ddgonzal
Re: heads
#2
Moderator
Joined:
2001/5/3 7:04
From 48 North
Group:
Registered Users
Contentmaster
Usermaster
Posts: 31599
Offline
Quote:
which one would u use on a daily driver with a good punch to it?
For best punch below ~3000 rpm, go with the round-port heads. For punch above 3000, go with the oval port head.

The closed chamber is good for maybe 3% extra power (if you use the 10% more expensive 'premium' fuel), and it helps increase both low and high speed power. Somewhere around here is an analysis of the compression ratio difference.

Guess: the oval port head will give more high-speed power than the closed-chamber round port head.

Posted on: 2005/10/17 5:32
Transfer the post to other applications Transfer






You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.

[Advanced Search]