Cylinder Head Runner Volumes
 

Well guys this is straight from an NHRA official. The runner volumes should be available by the PRI show and thats this coming Thursday,soooooo, lets just hope this happens! We all need to know this as the engine builders are freshening up engines for 2009 and a lot of us need these numbers!

Re: Cylinder Head Runner Volumes
 

I think it's great. There's going to be quite a few new "doorstops" in racer garages if they follow through with this.

Re: Cylinder Head Runner Volumes
 

Why? What are they doing? Are they changin the rules allowing larger heads are making it to where they have to be smaller heads than current ??

Re: Cylinder Head Runner Volumes
 

I couldn't agree more, Jared! This will be interesting to say the least. If they do it.

Re: Cylinder Head Runner Volumes
 

Woodro, I was told on 11-21-08 by NHRA. ca. tech dept, Pat Crengros no port runner volumes list for 2009, mite have list out mid year, for 2010, also heard second hand form Wayne Lewis they were not pouring int. or ext. runner in 2009, waiting to have new heads made for 2009, did they change their mind in ca,? Tom

Re: Cylinder Head Runner Volumes
 

What is it they are trying to change? They gonna allow larger or smaller heads??

Re: Cylinder Head Runner Volumes
 

I don't care what they do, Just stop changing their mind and leave it one way or the other.......

Re: Cylinder Head Runner Volumes
 

The list already exists, there should be no difference between the list already generated and a "stocker" list. However, some engines have 30 more cc's than actual on the current list.

Start Over, or have no cc rule at all.

In most fairy tales at least you have to kiss a frog first.

Re: Cylinder Head Runner Volumes
 

If the numbers exist for SS then the volumes should be the same. Shouldnt take too much math or decision. Just publish them. Those who are bigger just fill em with putty and change the flow. If putty is allowed in Stocker heads. Not sure on that part.
Now how about injector tech versus carb tech. Is it policed as closely?

Re: Cylinder Head Runner Volumes
 

I would like to know where I am supposed to be volume wise. My 4.3 V6 doesn't have a SS spec. If they have runner volumes they need to be put on the Engine Blueprint sheet.