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Discussion Starter · #1 ·
So i've looked all over the place on here and i've seen a lot of suggestions to throw on a thinner head gasket to increase compression. some of the threads say to take out one of the layers and stuff but is there a thinner one that i can just buy? i've got an 04 600. do i have to run 93 if i do? any direct help on this i'd appreciate. thanks guys.
 

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You will have to run a higher octane yes, but not sure how much higher. I'd say go with 93 for a tank and see if the engine knocks under load. If it does, you need a higher octane. If it doesn't, I'd try 91 (or whatever your next available lower octane is) and see if if knocks. One tank won't hurt it if it's slightly too low.
 

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i have an 05 750 with thinner head gasketand have no problems with runnin cheap ol 87
Technically, the manual calls for 90 on a stock 05 750, but all bikes are different, and if it works, and it isn't pinging, then it's all good I guess. I've been running 89 in mine. I'd be careful with running too low of an octane though.
 

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Discussion Starter · #6 ·
how hard is it to adjust the cam? how do i check the clearance? or could i do the gasket and then take it to the shop to finish up? thanks.
 

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Here's a link to describe the basics of degreeing cams. As for tools you'll need a piston stop, degree wheel, dial indicator and adjustable cam sprockets. as for the valve to piston clearance check there a several ways to do it. You can use the dial indicator again or even clay. If you Google "Checking valve to piston clearance" there a lots of write ups for you. It may not be an issue on your bike but it's always a good idea to check it to be sure because a mistake is bent valves or busted pistons.

http://www.sportrider.com/tech/146_0306_art/index.html
 
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