 BIG TYPE 4 CYLINDER SEALING, Wire O rings |
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| Type 4 Unleashed |
 Feb 5 2005, 04:17 AM
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CREATIVE TYPE lV ENGINEERING  Group: Retired Members Posts: 787 Joined: 20-June 04 From: Aliso Viejo, ca Member No.: 2,231 Region Association: None  |
Left, 911 95mm Right Type 4 104.9
The 911 cylinder is sealed with a wire sandwiched by I believe aluminum, when torqued the wire crushes in the aluminum against the head and against the cylinder, making a well known seal. The type 4 cylinder has been groved for a wire O ring. The wire is .033 dia, the grove is machined .033 wide and .029 deep, allowing .004 to protrude above the cyl sealing area. A copper head gasket will be used. When torqued the the wire will be crushed into the copper head gasket, making for a better seal. I've even thought about taking this further, by having another grove machined in the head, .033 wide, .029 deep, thus further sealing both sides of the copper gasket. And I thnk that, this would be as close as one could get to 911 sealing with cast iron cylinders. This is only my opinion, and skeptics need not apply. Richard Attached image(s) 
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Posts in this topic
V6914 BIG TYPE 4 CYLINDER SEALING Feb 5 2005, 04:17 AM
cnavarro I would think that machining the top surface with ... Feb 5 2005, 07:26 AM
9146986 Interesting idea. If I were going to do a mod, it... Feb 5 2005, 09:10 AM  |
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