Offset Valve Heads
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,686
Likes: 329
From: Scottsdale Arizona
Offset Valve Heads
I've seen a couple of these heads of late, most commonly the Trick Flow Specialties twisted wedge. For those that haven't seen them, the intake and exhaust valves are not side by side.
How do these work? The rockers don't appear to be offset. Are longer rockers required?
More curious than anything else.
How do these work? The rockers don't appear to be offset. Are longer rockers required?
More curious than anything else.
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,686
Likes: 329
From: Scottsdale Arizona
I finally found an article on what this was about. I found it interesting
http://www.hotrod.com/techarticles/t...ead_dyno_test/
http://www.hotrod.com/techarticles/t...ead_dyno_test/
Safety Car
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Originally Posted by CA-Legal-Vette
I've seen a couple of these heads of late, most commonly the Trick Flow Specialties twisted wedge. For those that haven't seen them, the intake and exhaust valves are not side by side.
How do these work? The rockers don't appear to be offset. Are longer rockers required?
More curious than anything else.
How do these work? The rockers don't appear to be offset. Are longer rockers required?
More curious than anything else.
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Lots of geometry and wear problem with the twisted wedge heads, the G2s are a little better but have both valves at a diff andlge (from stock), the 1st gen ones only have a repos. intake valve
The problems ended up killing them off...they aren't available anymore. I've got a pair of 1 gen ones lying around somewhere.
The problems ended up killing them off...they aren't available anymore. I've got a pair of 1 gen ones lying around somewhere.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
They were a major suck item. I had them refurbished twice and sold them. That is when they came out decree with a max lift of .500 or so to make the guides last.
they would be good for a modest power gain just like the article states.
they would be good for a modest power gain just like the article states.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I bought them when all the car rag magazines were claiming them to be the best thing out there. I bought them and had the seats opened up the spring pockets to 1.56 diameter for my .600+ lift roller motor. It just trashed the guides in a month or two. They repaired them with taller harder guides for more stem support and they also got trashed. they wouldn't refund my money and just refurbished them. When they came back i sold them for about 1/2 price to a friend with a low lift h-flat setup
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