supra dan Posted June 28, 2011 Share Posted June 28, 2011 can anyone tell me what the size of the valve guides are and the tolerance? Quote Link to comment Share on other sites More sharing options...
SimonB Posted June 28, 2011 Share Posted June 28, 2011 Inside diameter 6.010-6.030mm. The valve stems should be 5.970-5.985mm for the intake, 5.965-5.980mm exhaust. Which gives a clearance of 0.025-0.060mm for the intake and 0.030-0.065mm for the exhaust. Stock guides are 38.5mm high for the intake and 40.5mm high for the exhaust. They are supposed to protrude 12.3-12.8mm on the intake and 11.4-11.8mm on the exhaust. Quote Link to comment Share on other sites More sharing options...
supra dan Posted June 28, 2011 Author Share Posted June 28, 2011 thank you simon much appreciated Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 29, 2011 Share Posted June 29, 2011 And if you can measure the ID of a guide to those tolerances and check for ovality and taper, you have some impressive tools Quote Link to comment Share on other sites More sharing options...
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