Author Topic: Help - what are the valve sizes for inlet and exhaust - 750K  (Read 908 times)

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Offline 750goes

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Help - what are the valve sizes for inlet and exhaust - 750K
« on: November 28, 2006, 01:33:57 AM »
Can anyone give me a measurement to confirm that the following valve dimensions are correct for the 750K - I also presume they are for a pre 77 model (not the F2/F3)

Inlet 33.5mm
Exhaust 28.00mm

thanks guys for your prompt reply/ies.


Offline nippon

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Re: Help - what are the valve sizes for inlet and exhaust - 750K
« Reply #1 on: November 28, 2006, 02:25:11 AM »
got this from BlackdiamondValves for CB750s from 69-76

BLACK DIAMOND® Valves • Black Nitroneg Stems
KPMI NO. Type Head Dia Stem Dia. Tulip OL Remarks
30-4186 IN 32.00mm / 1.260” 0.2590” 23º 4.040” Standard
30-4187 IN 33.50mm / 1.319” 0.2590” 23º 4.055” Oversize
30-4188 EX 28.00mm / 1.102” 0.2580” 29º 4.040” Standard
30-4189 EX 28.50mm / 1.122” 0.2580” 29º 4.055” Oversize

nippon

Offline 750goes

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Re: Help - what are the valve sizes for inlet and exhaust - 750K
« Reply #2 on: November 28, 2006, 02:27:52 AM »
thank you very much for the information...