What ever happened to the Barry Grant 3-valve SBC head?
01-24-2008, 07:26 AM
#1
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What ever happened to the Barry Grant 3-valve SBC head?
Remember SEMA 2004.... Barry Grant displayed a mockup of his new 3-valve SBC head (actually designed by Triple D Induction)? What ever happened with those?
http://www.barrygrant.com/news/artic...oduct_014.aspx
http://www.barrygrant.com/pages/news...ticleid=sema04
http://www.barrygrant.com/news/artic...oduct_014.aspx
http://www.barrygrant.com/pages/news...ticleid=sema04
01-25-2008, 07:38 AM
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I think they are a figment of someone's imagination. 
After we hunt down the elusive 3-valve heads, we can try and find out what ever happened to the Coates spherical valve head development.....
http://www.coatesengine.com/csrv.html
http://www.usitoday.com/article_view.asp?ArticleID=2023
Their headquarters/factory/shop is located about 5 miles from where I work. I think I'll send them an e-mail and ask what the status is of the performance automotive applications. Their "Coates" sign outside the building appears to have either fallen down or been taken down, but there are still a few cars parked in front of the main door.
After we hunt down the elusive 3-valve heads, we can try and find out what ever happened to the Coates spherical valve head development.....
http://www.coatesengine.com/csrv.html
http://www.usitoday.com/article_view.asp?ArticleID=2023
Their headquarters/factory/shop is located about 5 miles from where I work. I think I'll send them an e-mail and ask what the status is of the performance automotive applications. Their "Coates" sign outside the building appears to have either fallen down or been taken down, but there are still a few cars parked in front of the main door.
01-25-2008, 08:53 AM
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Remember SEMA 2004.... Barry Grant displayed a mockup of his new 3-valve SBC head (actually designed by Triple D Induction)? What ever happened with those?
http://www.barrygrant.com/news/artic...oduct_014.aspx
http://www.barrygrant.com/pages/news...ticleid=sema04
http://www.barrygrant.com/news/artic...oduct_014.aspx
http://www.barrygrant.com/pages/news...ticleid=sema04
01-25-2008, 11:46 AM
#5
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We don't know.... Barry wasn't too free with info. I understand the head they showed at SEMA was a plastic mockup. Hopefully they didn't plan to use the same approach as Dominion/Arao, with two tips running on a single shaft rocker. That is probably the biggest single problem with the Arao heads.
01-25-2008, 02:57 PM
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We don't know.... Barry wasn't too free with info. I understand the head they showed at SEMA was a plastic mockup. Hopefully they didn't plan to use the same approach as Dominion/Arao, with two tips running on a single shaft rocker. That is probably the biggest single problem with the Arao heads.
Originally Posted by Tech @ BG
[W]e're using a tie bar between the two intake valves that is actuated by a standard style roller rocker.
01-25-2008, 06:39 PM
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01-25-2008, 06:42 PM
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I like how the sign fell down out front of the other place....thats great
06-18-2008, 12:50 AM
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That's gonna be a hard sell.
Originally Posted by Tech @ BG
Pro-touring72,
Sorry about that missed your question. We did not have the 3-Valve heads at the SEMA show this year. We’ve made some changes on that project and hope to devote some more time to them this year. We had an issue with some of the development people that we were working with, where they weren’t able to work within all of the criteria we initially set forth. The initial goal was to be able to utilize a standard short block with stock 4 eyebrow pistons. To do this we had to position the intake valves in a less than ideal position. The prototypes showed great potential, but had a few drawbacks in relation to optimal compression ratios, and cam lifts. So if the end user would have to use a custom piston anyway the thought is to redesign the chamber and valve orientation to increase the benefits further. There are a number of manufactures now utilizing 3-valve cylinder heads, so we all know there is potential with these types of designs.
Sorry about that missed your question. We did not have the 3-Valve heads at the SEMA show this year. We’ve made some changes on that project and hope to devote some more time to them this year. We had an issue with some of the development people that we were working with, where they weren’t able to work within all of the criteria we initially set forth. The initial goal was to be able to utilize a standard short block with stock 4 eyebrow pistons. To do this we had to position the intake valves in a less than ideal position. The prototypes showed great potential, but had a few drawbacks in relation to optimal compression ratios, and cam lifts. So if the end user would have to use a custom piston anyway the thought is to redesign the chamber and valve orientation to increase the benefits further. There are a number of manufactures now utilizing 3-valve cylinder heads, so we all know there is potential with these types of designs.
06-18-2008, 02:53 PM
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we can try and find out what ever happened to the Coates spherical valve head development.....
Their headquarters/factory/shop is located about 5 miles from where I work. I think I'll send them an e-mail and ask what the status is of the performance automotive applications. Their "Coates" sign outside the building appears to have either fallen down or been taken down, but there are still a few cars parked in front of the main door.
Their headquarters/factory/shop is located about 5 miles from where I work. I think I'll send them an e-mail and ask what the status is of the performance automotive applications. Their "Coates" sign outside the building appears to have either fallen down or been taken down, but there are still a few cars parked in front of the main door.
06-18-2008, 11:02 PM
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06-19-2008, 01:01 PM
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Two thing about the Coates design that immediately come to mind.
First it appears that the intake and exhaust charge has to make two sharp right angle turns to get into/out of the cylinder.
Second what happens to the beautifully polished rotating valve after the cylinder fires a few times and it gets all gummed up with deposits.
First it appears that the intake and exhaust charge has to make two sharp right angle turns to get into/out of the cylinder.
Second what happens to the beautifully polished rotating valve after the cylinder fires a few times and it gets all gummed up with deposits.
06-20-2008, 01:41 PM
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Aww come on, minor details!!
BG is in serious money troubles now, I doubt they will ever sell them. A few months ago rumor around the campfire has is that Barry had to sell off several assetts to make payroll.
BG is in serious money troubles now, I doubt they will ever sell them. A few months ago rumor around the campfire has is that Barry had to sell off several assetts to make payroll.