NHRA 2020 Rule Amendment SS Intakes???

[SSDiv6]

Originally Posted by bykr

Look at it this way.If a cylinder head had 200 cc port volume and you mill away 20 cc's with this angle milling. You now have a head with 180cc's that you can open up to the 200cc spec. which then could perform like a non angle milled 220cc head. Why else would they do this?

Get off the pipe. Your statement shows the lack of knowledge of porting cylinder heads.

It is not about volume, it is about CSA, volume and shape of the port. You can have a 230cc port volume that is outperformed by a 200cc port volume.

[bykr]

Originally Posted by SSDiv6

Get off the pipe. Your statement shows the lack of knowledge of porting cylinder heads.

It is not about volume, it is about CSA, volume and shape of the port. You can have a 230cc port volume that is outperformed by a 200cc port volume.

You can, but with equal port configurations which will flow more? Duh. Why do think they're doing this angle milling, to make the intake fit better-lol

[Mark Yacavone]

I don't race Super Stock anymore. I have enough trouble racing Stock, lately. I don't care what you guys do, and not going to suggest anything here.
I can tell you this.
I realize they didn't measure port volume in the old days.
So you guys can call this stuff cheating, being innovative, gettin' competitve, whatever you like but , if Farmer, Greg X , or Marty Barrett were still with us, the first time they laid eyes on this stuff, they would have called it ..
"buh bye"

[Tom Broome]

Originally Posted by SSDiv6

Get off the pipe. Your statement shows the lack of knowledge of porting cylinder heads.

It is not about volume, it is about CSA, volume and shape of the port. You can have a 230cc port volume that is outperformed by a 200cc port volume.

Well....He may not be a "renowned head porter", but he has enough common sense to understand that if you lose volume by drastically milling the intake surface, you gain the ability to change the "CSA, Volume and shape of the port".....To use your phraseology.

Perhaps you shouldn't take his statement as an absolute.

[Tom Broome]

Originally Posted by Sean Cour

I wonder if exhaust adaptors will be illegal too? I mean, the angle should be checked on the exhaust side, if the intake rule gets reinstated!

I got that t-shirt the first year NHRA started checking port volume. Milled the exhaust surface almost smooth on some SB Chev heads.....Tech didn't want to see them again.
Want to discuss chamber mods and angle milling?

[Jeff Niceswanger]

Originally Posted by Mark Yacavone

I don't race Super Stock anymore. I have enough trouble racing Stock, lately. I don't care what you guys do, and not going to suggest anything here.
I can tell you this.
I realize they didn't measure port volume in the old days.
So you guys can call this stuff cheating, being innovative, gettin' competitve, whatever you like but , if Farmer, Greg X , or Marty Barrett were still with us, the first time they laid eyes on this stuff, they would have called it ..
"buh bye"

Mark,
The "First" word is the key. They would never have passed this stuff as you call it, then after multiple passing's,and multiple years,change their mind and say " to all those guys we told it was Ok..... please junk your stuff"

[SSDiv6]

Originally Posted by Tom Broome

Well....He may not be a "renowned head porter", but he has enough common sense to understand that if you lose volume by drastically milling the intake surface, you gain the ability to change the "CSA, Volume and shape of the port".....To use your phraseology.

Perhaps you shouldn't take his statement as an absolute.

Common sense?

As stated in a prior post, legally, Super Stock cylinder heads can be welded and/or epoxied. The angle milling does not have nothing to do with the volume of the ports. The majority of the Super Stock Chevy small block cylinder heads ports have been reshaped with epoxy and most are configured to an oval port from the OEM rectangular port shape.

Therefore, any Super Stock cylinder head can be returned to the appropriate port volume by welding or the use of epoxy.

[Mark Yacavone]

Originally Posted by Jeff Niceswanger

Mark,
The "First" word is the key. They would never have passed this stuff as you call it, then after multiple passing's,and multiple years,change their mind and say " to all those guys we told it was Ok..... please junk your stuff"

Jeff, I agree with that
I guess you just can't expect too much for your 350 bucks.

Just trying to put all this in perspective

[Bob Smith]

Again:

http://nhraracer.com/content/general...728&zoneid=132

[Dan Fahey]

Originally Posted by SSDiv6

Common sense?

As stated in a prior post, legally, Super Stock cylinder heads can be welded and/or epoxied. The angle milling does not have nothing to do with the volume of the ports. The majority of the Super Stock Chevy small block cylinder heads ports have been reshaped with epoxy and most are configured to an oval port from the OEM rectangular port shape.

Therefore, any Super Stock cylinder head can be returned to the appropriate port volume by welding or the use of epoxy.

This is what Bill Jenkins, Bob Glidden, al all the Early Pro Stockers did to their heads.

No wonder Stock and Super Stockers are running ET's that were State of the Art back then..