Need a bit of guidance checking valve clearance on a 94 750 - Suzuki GSX-R Motorcycle Forums Gixxer.com

 
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post #1 of 3 (permalink) Old 09-08-2017, 01:50 PM Thread Starter
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Location: Ontario, Canada
Motorcycle: 94 GsxR 750
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Need a bit of guidance checking valve clearance on a 94 750

So I get the valve cover and the signal generator cover off to find that it has what I think is an advance ignition signal rotor installed. Well I'm trying to check valve clearance and I bring the mark on the rotor to the tdc mark and the notches in the in and ex camshafts where they're supposed to be. Then it says to check the clearances of #1 intake and ex Etc, then rotate the motor to check the rest. What I'm confused about is it says the cam lobes need to be in a certain position in order to check the clearances, and the cam lobes with this generator are almost in that position but are pointing about 1 O'clock away from the gasketed surface of the head ( That surface being 12 O'clock) The manual states they should point at the gasketed surface or pointing up towards the middle of the Journal cap. Do I take the reading as is as per tdc mark and cam notches in the position they are supposed to be in or rotate the motor so the cam lobes face the head/ up?
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post #2 of 3 (permalink) Old 09-08-2017, 02:21 PM
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Re: Need a bit of guidance checking valve clearance on a 94 750

turn the cam lobes so they face directly away from the bucket and measure the clearance, all this BS about aligning marks is irrelevent..
ya need to be very careful of alignment if/when the cams are removed for shim replacement..
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post #3 of 3 (permalink) Old 09-08-2017, 02:43 PM Thread Starter
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Re: Need a bit of guidance checking valve clearance on a 94 750

Quote:
Originally Posted by john kinzell View Post
turn the cam lobes so they face directly away from the bucket and measure the clearance, all this BS about aligning marks is irrelevent..
ya need to be very careful of alignment if/when the cams are removed for shim replacement..
Cool, think that's what I needed to hear. After seeing what's going on I figured that was the only logical way to check them .... So why is the manual going into all this b.s of lining up marks and then checking? when it says the cam lobes need to be in X or Y position? Thanks for the reply man.
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