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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Porting 4 strokes, bigger (Ti) valves: benefits?
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[QUOTE="ballistic, post: 151902, member: 21336"] I did a search on PORTING, theres very little info on the topic. So heres the Q's: My bike: 2001 DRZ, with many mods already. I found a fellow named Larry Beall in TX who can do the following type of work fairly reasonably. --titanium alloy (6-4)valves... stock size or oversized, $35. each --Ti alloy wrist pins --porting In general terms, what likely benefits is there from those items? Lighter weight Ti wristpin: Will it allow faster revving, or what? Ti valves: again.. what would it do? allow faster revs? more power? oversized Ti valves: any downside to going a little bigger? Is the jury out? Is the DRZ head just fine the way it is?:think porting: same questions. Any feedback appreciated guys. Cost/benefit aside, what are the pure benefits? Is this stuff definite upgrade material? Would YOU do it? I find it curious that a search turned up almost nothing. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Porting 4 strokes, bigger (Ti) valves: benefits?
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