OST-013: Massaging a virgin ;)
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09-13-2011, 06:10 PM
Post: #41
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OST-013: Massaging a virgin ;)
Project D Wrote:Quote:Does anyone have an idea why I don't mean that?Basically not the same goal (?) ...... and the answer is (drum roll)........... Oversize valves I've not as of yet had a head built for O/S valves. Because the valve is oversize, the port MUST be shaped to accommodate the O/S valve. If the port were that large for a standard valve, the velocity of the intake charge will suffer, and so will the torque. I can't speak for anyone else's work........ I try NOT to do that*. What I've found is the tools designed to get that finish, require more room, so the guide bosses are shaped to accommodate the tool. * - I try to minimize the guide boss, but I do try to keep it in its original shape, albeit a bit more narrow, and often not as tall. If you look at my intake port compared to the untouched port, I DO change the angle that the guide boss is directed towards. OEM is just there, where as mine the base is more into the center of the air stream. Dan - You can | .... OR you can ask for help!!! OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991 |
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