Join Date: Aug 2009
Location: Washington, the state
Mid point for the exhaust is 0.25mm, and for the intake 0.15mm. Your present exhaust shims are 1.65mm thick. You want to increase the gap on the exhaust from .17mm to .25mm, 0.08mm change, so you need a shim that is 1.57 mm (1.65 - .08 = 1.57), or 1.55mm shim for a 0.27 gap, although Suzuki's chart calls for a 160 for a .22mm gap. The other exhaust is in spec, but you could increase the gap by .05mm with a 160 shim.
Figure the intakes the same way. Don't worry about trying for the exact mid point. If you are at the minimum spec, .20 exhaust and .10 intake, you might make the change but it isn't (yet) critical--you're still within spec.
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