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Forum: General Racing Topics 18-12-2007, 11:53 PM
Replies: 91
Views: 11,375
Posted By jw.
A bit of both.

A bit of both.
Forum: General Racing Topics 18-12-2007, 11:52 PM
Replies: 91
Views: 11,375
Posted By jw.
Yeh, that's dead right. They last about 5 minutes...

Yeh, that's dead right. They last about 5 minutes under stress on the exhaust side cos there's almost no heat transfer. Well, maybe a bit longer than five minutes....
Forum: General Racing Topics 18-12-2007, 11:49 PM
Replies: 91
Views: 11,375
Posted By jw.
Aye, I thought you might be. :lol:lol:

Aye, I thought you might be. :lol:lol:
Forum: General Racing Topics 18-12-2007, 11:43 PM
Replies: 91
Views: 11,375
Posted By jw.
Smarty pants. These are all a bit different. The...

Smarty pants. These are all a bit different. The valve heads can also be modified but a true venturi port will be enlarged before the valve and the ports and valves shaped to produce a venturi when...
Forum: General Racing Topics 18-12-2007, 11:24 PM
Replies: 91
Views: 11,375
Posted By jw.
I dunno but I think he's referring to the valve...

I dunno but I think he's referring to the valve seats, which would commonly be a flat 45°, having a chamfer angle inside the port and also one outside in the combustion chamber area producing a seat...
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