FZRSupport: the FZROnline Archive

Where should the lobe be when checking the clearance? I thought it was at TDC, but in the manual they show a pic of checking it when the lobe is pointing up, straight with the valve. I'm confused. If it is measured at TDC then I measured correctly.

Intake
#1-.006 .005
#2-.005 .004
#3-.005 .004
#4-.006 .006

Exhausts all look good in the .011 and .012 range.

The intakes are technically in spec so should I leave them alone or pull the cam and reshim the valves?

If you're looking at page 3-11 of the FZR600W manual, then there are two pics to look at here. The pic shows the lobes pointing away from each other - this is TDC on compression/power, which is where you want to check the clearance. The second pic shows the lobe pointing straight up, perhaps to allow clearance for your fingers getting the feeler gauge in there, but also very likely an artist's brain cramp. So long as the lobe is well away from the valve cap, the clearance can be measured properly.

As for the intakes, you've got some valves getting pretty tight. If you live in Michigan, keep going until you park the bike for the winter, then do your shims as part of your storage routine. If you live in Florida or California, plan on getting in there some time in the next month or so.

I'm with Don. A valve on the loose side is gonna be a lot happier than one that is forced to run tight. You're halfway there..shim 'em out to the loose end and call it good for another buncha thousand miles.

The lobe may be pointed straight up in the picture, but the engine is leaning forward. If you leaned the engine back so the piston (cylinder) was straight up and down, the lobe would be pointing to the rear of the bike. (at about 2 o'clock or so)

Just line up the timing marks and make sure the lobes of the cylinder you are checking are pointed away from each other, if they are pointed towards each other, rotate the engine 180 degrees.