748 Valve Clearances

Discussion in '748 / 916 / 996 / 998' started by stuart Nicholls, Dec 8, 2021.

  1. Hi
    Does anyone know the valve clearances for the 748R,Just reading the factory workshop manual for the 748R, I must be missing something it tells you how to check them but I cannot find a mention of the actual clearances,

    many thanks
     
  2. You must have missed them, they are on the page prior to How to Adjust:

    Valve Clearances.jpg
     
  3. Thanks guys for the information much appreciated

    I took the engine out to do the valves and belts, I checked the vertical cylinder exhaust valves first and found 2 of the collets had broken, so well worth checking
     
  4. It's a very common problem that happens in hard/high revved Desmoquatro's.
    Replace the OEM 1/2 rings with MBP Collets, wave goodbye to this happening ever again and extend the mileage between valve adjustments.

    Steve R
     
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