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Author Topic: Valve clearance question  (Read 2931 times)

Offline BearTrap

  • Motobrick Curious
  • Posts: 49
Valve clearance question
« on: October 19, 2017, 01:33:12 PM »
I have a 1990 K75 standard low seat with 50k on the clock. Just checked valve clearance and here are the results. Intake: 1/.15mm, 2/.15mm, 3/.25mm Exhaust: 1/.25mm, 2/.25mm, 3/.25mm. Should I be concerned with the number 3 intake? Motor runs smooth with no engine pinging or clatter. Thanks.
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  • Rancho Mirage, CA
  • 1990 K75 low seat

Offline Chaos

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 3157
  • Mars needs women!
Re: Valve clearance question
« Reply #1 on: October 19, 2017, 01:46:35 PM »
no, little loose is better than tight.  Keep an eye on the exhaust, they are at the minimum and they tend to tighten from valve recession.  Burnt valves can result.
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline BearTrap

  • Motobrick Curious
  • Posts: 49
Re: Valve clearance question
« Reply #2 on: October 19, 2017, 06:41:17 PM »
I thought so. I will keep an eye on the exhaust. Thank you for the input.
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  • Rancho Mirage, CA
  • 1990 K75 low seat
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