1) What's the difference between the K and KH Intake valves (18070-52 and 18070-54) ??
B) My valves/seats are cut at 30-degrees. Is this correct for the K/KH ? No service manual for the K-models. The Sportster service manual says 45-degrees.
iii) Several people have recommended the stainless steel KR valves sold by Enfield Racing. Their catalog says 45-degrees, can be refaced to 30-degrees. Eastern sells "plain finish" 18070-54 and 18080-52. Comments? Other vendors? Recommendations?
Thanks for your help!
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18070-41R 4.90 Intake valve (2) Early 53—Model KK
18080-41R 4.20 Exhaust valve (2) Early 53—Model KK
18070-52 3.65 Intake valve (2) 52 & 53—Model K & later 53—KK
18070-54 3.65 Intake valve (2) 54 to 56—Model KH
18080-52 3.65 Exhaust valve (2) 52 to 56—All K Models except early 53—KK
18070-57 2.00 Intake valve (2) 57 Sportster
18080-57 5.25 Exhaust valve (2) 57 Sportster