Cylinder Head Runner Volumes

Woodro Josey · 12-07-2008, 08:02 PM

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!

Jared Jordan · 12-07-2008, 09:23 PM

Quote:

Originally Posted by Woodro Josey

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!

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

trmnatr · 12-07-2008, 10:30 PM

Quote:

Originally Posted by Jared Jordan

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

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 ??

Shawn Blair · 12-08-2008, 12:42 AM

Quote:

Originally Posted by Jared Jordan

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

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

Tom Moock · 12-08-2008, 01:28 AM

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

trmnatr · 12-08-2008, 02:37 AM

Quote:

Originally Posted by Tom Moock

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

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

Gary Parker · 12-08-2008, 06:43 AM

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

Woodro Josey · 12-15-2008, 12:20 PM

Just Shows, you cannot trust an NHRA Official anymore!

Woodro Josey · 12-15-2008, 12:22 PM

Its like closing the barn door after all of the cows have left the farm.

Tech Man you are so right!

Myron Piatek · 12-15-2008, 12:56 PM

Legitimizing "acid" porting or not, at least there will be a set number. It's been brought up here many times that the "higher ups" don't want to go through any more time, trouble and cost in tech than they have to. So bit by bit, the rules have been "generalized". (i.e.: stock cam lift but any duration, any spring pressure, etc.) Porting concerns/violations have been based on the tech person's interpretation anyway which can be difficult to prove or disprove by either party. With a set cc number, hopefully somewhat less than SS, at least there will be a clear limit. (I don't know how close the SS cc's are to average as-cast OEM numbers.) If they don't emphasize the as-cast port texture, perhaps that would reduce costs because any massaging wouldn't have to be covered up, which is where a lot of expense is. Of course, it would still be possible to weld, recontour, etc. and cover that up. There will always be people with the money and resources to get around any rules. But overall it should reduce the difference between the top and bottom qualifiers.

The down side is that Stock will be a little more like SS. But I would hope there will be enough differences to keep them seperate.

12-07-2008, 08:02 PM	#1
Woodro Josey Senior Member Join Date: Jul 2007 Posts: 805 Likes: 0 Liked 3 Times in 1 Post	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! __________________ Woodro Josey 2002 STK

12-08-2008, 01:28 AM	#5
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	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 __________________ Tom Moock 5704 STK

12-08-2008, 06:43 AM	#7
Gary Parker Senior Member Join Date: Apr 2004 Location: Westfield Mass Posts: 529 Likes: 368 Liked 425 Times in 56 Posts	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....... __________________ Gary Parker 1617 STK

12-15-2008, 12:20 PM	#8
Woodro Josey Senior Member Join Date: Jul 2007 Posts: 805 Likes: 0 Liked 3 Times in 1 Post	Re: Cylinder Head Runner Volumes Just Shows, you cannot trust an NHRA Official anymore! __________________ Woodro Josey 2002 STK

12-15-2008, 12:22 PM	#9
Woodro Josey Senior Member Join Date: Jul 2007 Posts: 805 Likes: 0 Liked 3 Times in 1 Post	Re: Cylinder Head Runner Volumes Its like closing the barn door after all of the cows have left the farm. Tech Man you are so right! __________________ Woodro Josey 2002 STK

12-15-2008, 12:56 PM	#10
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: Cylinder Head Runner Volumes Legitimizing "acid" porting or not, at least there will be a set number. It's been brought up here many times that the "higher ups" don't want to go through any more time, trouble and cost in tech than they have to. So bit by bit, the rules have been "generalized". (i.e.: stock cam lift but any duration, any spring pressure, etc.) Porting concerns/violations have been based on the tech person's interpretation anyway which can be difficult to prove or disprove by either party. With a set cc number, hopefully somewhat less than SS, at least there will be a clear limit. (I don't know how close the SS cc's are to average as-cast OEM numbers.) If they don't emphasize the as-cast port texture, perhaps that would reduce costs because any massaging wouldn't have to be covered up, which is where a lot of expense is. Of course, it would still be possible to weld, recontour, etc. and cover that up. There will always be people with the money and resources to get around any rules. But overall it should reduce the difference between the top and bottom qualifiers. The down side is that Stock will be a little more like SS. But I would hope there will be enough differences to keep them seperate. __________________ LOCOMOTION Racing