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Reaming data for valve guides?
- Micha
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Reaming data for valve guides?
I would like to get my hands on such a chart regarding tolerances of reaming new guides for a bike that lives in a warm climate.
Is this information available at all, or does a workshop perform the reaming according to some personal knowledge?
Thanks!
R51/3 1952
Engine Nr. 529466
- jwonder
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Re: Reaming data for valve guides?
I just finished my R 50/2 a month or so ago and I measured the fit with the gauges and then made them looser. Measure with a very thin oil as well to get a good feel.
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
- Rodolfo850
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Re: Reaming data for valve guides?
I rebuilt mine R60/2 LK cylinder head, but request Machinist shop the closes tolerance, to avoid burning oil.
Yesteday after 20 milles since rebuilt on my way to the Distinguished Gentelmans Ride, my engine started to sound like a typewriter and stops...
Exhaust valve sticks to valve guide......so it returns on my trailer to house...
- jwonder
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Re: Reaming data for valve guides?
List of KPMI components
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York