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Have you hugged your R1 today?
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Discussion Starter #1
Ok, so I'm reassembling the head on my 4XV. The manual says the installed valve spring height is 34.5 mm intake, and 34 mm for exhaust. It doesn't mention a service limit. If I can measure it, does anyone have any experience with what would be a good(safe) range to be in?
Also does anyone know of a crafty way to go about measuring the installed valve spring height.
 

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unless you racing this and going to be sitting at red line, just install the springs. you wont have a problem. never seen these have a problem and ive run stock springs with kit ecu going to 12750rpm
 

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Have you hugged your R1 today?
Joined
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217 Posts
Discussion Starter #3
unless you racing this and going to be sitting at red line, just install the springs. you wont have a problem. never seen these have a problem and ive run stock springs with kit ecu going to 12750rpm
Ok, thank you for the reply.
Now I can move forward with this project.
 
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