|
![]() |
#11 | |
Junior Member
Join Date: Jan 2010
Posts: 81
Likes: 0
Liked 12 Times in 6 Posts
|
![]() Quote:
Adam good to hear it is worth power. Scott |
|
![]() |
![]() |
![]() |
#12 |
Member
Join Date: Oct 2002
Location: kansas
Posts: 230
Likes: 423
Liked 236 Times in 44 Posts
|
![]()
If this is all legal I've learned something new.
|
![]() |
![]() |
![]() |
#13 |
Member
Join Date: Dec 2001
Location: Jericho,Vt
Posts: 201
Likes: 89
Liked 85 Times in 19 Posts
|
![]()
NHRA pours an outer runner to check cc`s on a Pontiac head.
It`s okay to fill the heat crossover but you can`t do any blending in the exhaust bowl on a Stocker head. On a bracket head my buddy who does heads for a living will over fill the heat crossover in the exhaust bowl so he can blend all that in when he ports the head. Not legal in Stock.
__________________
Adam Strang 1018 STK |
![]() |
![]() |
![]() |
#14 | |
Member
Join Date: Oct 2005
Location: N.S. CANADA
Posts: 498
Likes: 155
Liked 68 Times in 41 Posts
|
![]() Quote:
page xv under "HOW TO USE THIS RULEBOOK" in the rule book On the other hand, as to performance equipment, it is the general rule that unless optional performance equipment or performance-related modification is specifically permitted by this Rulebook, it is prohibited. All model, engine, or equipment changes or modifications not specifically addressed in this Rulebook must be submitted in writing to NHRA for consideration prior to competition. Approval will be granted or denied in NHRA’s sole and absolute discretion. The applicant will be notified of approval or rejection in writing from NHRA headquarters in Glendora, Calif. as I read it "Blocking passage down in valve pocket prohibited."I have not seen any where in the book that says "I was under the impression" lol
__________________
1231 FS/D Drag Pak 1231 E/SA 71 Demon Kelly MacKay Last edited by dartman; 01-29-2013 at 02:17 PM. |
|
![]() |
![]() |
![]() |
#15 | |
Senior Member
Join Date: Dec 2001
Location: Elysburg, Pa
Posts: 697
Likes: 286
Liked 242 Times in 94 Posts
|
![]() Quote:
|
|
![]() |
![]() |
![]() |
#16 |
VIP Member
Join Date: Jun 2007
Location: from Vancouver BC Canada, now in Nova Scotia
Posts: 1,259
Likes: 246
Liked 951 Times in 262 Posts
|
![]()
Considering that all the accepted Edelbrock aluminum heads that I`ve seen have no crossover provision at all, thus no "cave" in the port, wouldn`t it be nice if NHRA allowed factory heads be completely filled too?
__________________
NHRA 6390 STK M/S 85 Mustang |
![]() |
![]() |
![]() |
#17 | |
Veteran Member
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,483
Likes: 2,657
Liked 4,591 Times in 1,738 Posts
|
![]() Quote:
On Stockers, I place a cotton ball, saturated with plaster of paris into the exh. hole from the port side. I push it in about 3/16ths so there is no question about it being in the port. This does not hurt the flow ,I have been told .I then fill it right up from the intake side, and then grind off excess. On bracket engines , I fill from the port side ..in one side ,until it comes out the other port, then grind and smooth, as others have stated. It really helps to put about a 1/16 th air bleed hole in your block off plate. I have been using aluminum and a home made ladle ,and a cutting torch. I will look into the zinc deal. Thanks
__________________
We are lucky we don't get as much Government as we pay for..... Will Rogers |
|
![]() |
![]() |
![]() |
#18 |
Member
Join Date: May 2009
Posts: 172
Likes: 35
Liked 49 Times in 25 Posts
|
![]()
Thanks to all that replied, Ron.
|
![]() |
![]() |
![]() |
#19 |
VIP Member
Join Date: Sep 2002
Location: Williamsburg, Va.---USA
Posts: 1,827
Likes: 1,612
Liked 56 Times in 27 Posts
|
![]()
Ron,
You have a PM ........
__________________
Dave Ribeiro 1033 STK |
![]() |
![]() |
![]() |
#20 |
Member
Join Date: May 2009
Posts: 172
Likes: 35
Liked 49 Times in 25 Posts
|
![]()
Adam Strang, you have a pm.
|
![]() |
![]() |
![]() |
|
|