montesa 348 kick trouble Posted April 25, 2021 Report Share Posted April 25, 2021 does anybody know the original thickness of the ossa mar central case gasket?....i want to know so i can get the correct -same thickness as original gasket ,in oerder to avoid shimming changes.......The old gasket seems to average at 0.025 inch ive got a new one from vintco and it mic's at 0.030 inch ... Quote Link to comment Share on other sites More sharing options...
djr Posted April 25, 2021 Report Share Posted April 25, 2021 Sorry I have no idea what an original unused gasket would measure up to, but I do have a cheap looking aftermarket MAR gasket ( not Vintco) here in blue card that measures .020 inch Your .030 inch gasket will crush down a small amount when assembled & all screws torqued up, but the only way to see how much would be to - 1.assemble - 2. torque up screws 3. - dismantle - 4. measure gasket ( then buy another Vintco gasket to use if you are happy with measurements ) If you say the old gasket AVERAGES -.025 inch , then I wouldn't think you are far off Are the tolerances that fine on an Ossa ? I need to rebuild my own MAR engine soon, and I think I would rather have too much clearance rather than too little - better loose than something binding - I will be looking for a thicker gasket than the one I have Quote Link to comment Share on other sites More sharing options...
rms Posted May 2, 2021 Report Share Posted May 2, 2021 Artein gasket is .035 inch when new Quote Link to comment Share on other sites More sharing options...
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