Super Stock Hemi Head Tech - Page 2

ppmracing · 04-09-2024, 11:45 PM

Is it legal with Hollow steam valves ???

Dyno · 04-10-2024, 09:46 PM

Hemi valves are 5/16, not much to take out of the stem. I do not think anyone makes or uses them, could be wrong!

James Hensler · 04-11-2024, 06:11 PM

Dan didn’t Barton try sodium filled at one point?

ppmracing · 04-11-2024, 07:55 PM

Darrin Morgan is saying in the video, that it is a Hollow steam valve the are using, to save weight.

Rick J · 04-11-2024, 10:13 PM

Hollow stem valves have been used in super stock, and stock for a long time.

James Hensler · 04-12-2024, 07:54 AM

Yeah I get that but we are now spinning these thing 9600-10000 rpm’s and the head is still big and heavy. We have figured out the bearings and oiling but the last 10 or so blow ups have been broken valves

Dyno · 04-12-2024, 09:39 AM

Quote:

Originally Posted by Rick J

Hollow stem valves have been used in super stock, and stock for a long time.

In 3/8 or 11/32, not enough material in a 5/16 stem.

Rick J · 04-12-2024, 10:21 AM

Quote:

Originally Posted by Dyno

In 3/8 or 11/32, not enough material in a 5/16 stem.

Sure, 5/16 and
7mm are pretty common

ppmracing · 04-12-2024, 06:29 PM

Quote:

Originally Posted by Rick J

Hollow stem valves have been used in super stock, and stock for a long time.

Dosent means its leagle !!

gearhead63 · 04-14-2024, 07:55 AM

The rulebook says . Any aftermarket
steel valve permitted; must maintain stock head and stem size;=hollow steam valves allowed.

04-09-2024, 11:45 PM	#11
ppmracing Junior Member Join Date: Dec 2011 Posts: 27 Likes: 5 Liked 2 Times in 2 Posts	Re: Super Stock Hemi Head Tech Is it legal with Hollow steam valves ???

04-10-2024, 09:46 PM	#12
Dyno Senior Member Join Date: Dec 2002 Posts: 912 Likes: 1,123 Liked 677 Times in 201 Posts	Re: Super Stock Hemi Head Tech Hemi valves are 5/16, not much to take out of the stem. I do not think anyone makes or uses them, could be wrong!

04-11-2024, 06:11 PM	#13
James Hensler Member Join Date: Apr 2022 Location: Noblesville,In Posts: 108 Likes: 7 Liked 58 Times in 36 Posts	Re: Super Stock Hemi Head Tech Dan didn’t Barton try sodium filled at one point? __________________ SS/AH 328X

04-11-2024, 07:55 PM	#14
ppmracing Junior Member Join Date: Dec 2011 Posts: 27 Likes: 5 Liked 2 Times in 2 Posts	Re: Super Stock Hemi Head Tech Darrin Morgan is saying in the video, that it is a Hollow steam valve the are using, to save weight. Last edited by ppmracing; 04-11-2024 at 11:50 PM.

04-11-2024, 10:13 PM	#15
Rick J Member Join Date: Jul 2022 Posts: 102 Likes: 31 Liked 73 Times in 37 Posts	Re: Super Stock Hemi Head Tech Hollow stem valves have been used in super stock, and stock for a long time.

04-12-2024, 07:54 AM	#16
James Hensler Member Join Date: Apr 2022 Location: Noblesville,In Posts: 108 Likes: 7 Liked 58 Times in 36 Posts	Re: Super Stock Hemi Head Tech Yeah I get that but we are now spinning these thing 9600-10000 rpm’s and the head is still big and heavy. We have figured out the bearings and oiling but the last 10 or so blow ups have been broken valves __________________ SS/AH 328X Last edited by James Hensler; 04-12-2024 at 07:58 AM.

04-14-2024, 07:55 AM	#20
gearhead63 Junior Member Join Date: Aug 2017 Location: sweden Posts: 16 Likes: 0 Liked 13 Times in 4 Posts	Re: Super Stock Hemi Head Tech The rulebook says . Any aftermarket steel valve permitted; must maintain stock head and stem size;=hollow steam valves allowed.