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Member
I recently bought my 06 pred last fall and now im adjusting the valves the intake side checks out at .006+or- but the exhaust side is .005 according to polaris it sould be .010+or- the shim number thats in the exhaust side is a 130 going online polaris doesnt have shims any smaller
Senior Member
Hotcams has a kit on ebay for valve shims u could prob send an email to find out the sizes in that kit.
06 Outlaw 500 (558)
12.5 wiseco
hotcams
HMF sport slip-on
K&N filter
PRM six pack
Pure Polaris nerf - bumper
39 tooth
Senior Member
No idea what you're talking about with the +or- but if you need a shim that thin I'd be worried about the valve. I've never needed to go that small.Originally posted by predator0609
the intake side checks out at .006+or- but the exhaust side is .005 according to polaris it sould be .010+or- the shim number thats in the exhaust side is a 130 going online polaris doesnt have shims any smaller
I'm with the other poster too when it comes to shims hotcams is the way to go. I just buy the refill packs, never the whole kit.
'00 Honda XR400R - The classic
'05 Polaris Predator 500 - The 450 killer - FOR SALE
'04 Honda Recon - The yard machine
'05 Honda 500 Foreman 4X4 ES - The plow
Predator/Outlaw Guru
When the predator valves require an adjustment, it is USUALLY the intake valves that get tight. If you have an exhaust valve that is getting a bit tight, I would adjust it and check in another few hours. .005 of an adjustment isn't a very large one anyway. There is a chart in the service manual that uses existing shim size and current gap to tell you exactly which shim you need. Also, the YFZ450 uses the same size shim as the pred. (9.48mm). It appears you would need a 122 shim. I bought some individually from the yamaha dealer for less than $5 each.
Yamaha makes shims down to 120, and the Hotcams kit goes down to 120 as well.
MAKE SURE YOUR PREDATOR IS COMPLETELY COOL BEFORE CHECKING CLEARANCE. If it wasn't, your clearance (especially exhaust) will measure smaller than it should.
Predator owner since 2003
2009 Polaris Outlaw 525S...in-work building.
2005 Pedator
Twin Air clamp-on, Edelbrock, Rath A-arms, Dyna FS, Rath Rear Hubs, PEP Shocks (built by Rath), Flexx bars, Hiper Wheels, Razr 2 Tires, P&P cylinder head (Nicholas Cycle), Rath Head Pipe, Pro Armor Kill Switch, Yoshimura slip-on, Pro Armor nerfs, JE 12.5:1 Piston, Trail Tech Dash and Endurance Computer, Home made radiator scoops and chassis skid, PRM Bumper and Grab Bar.
Member
it was totally cool when I checked it, I bought it used so who now what was done before I got it. Is it normal for shims to go that small or are valves screwed?
Predator/Outlaw Guru
If it was your intake valves that got that tight, I would say that is a common issue with the Predator and you should replace them. Since it is your exhause side, I have yet to see exhaust valves wear hardly at all. If it was my machine, I would shim them into proper spec and check again in 10 to 20 hours. If the adjustment gets tight again, replace the valves and lap the seats.
Predator owner since 2003
2009 Polaris Outlaw 525S...in-work building.
2005 Pedator
Twin Air clamp-on, Edelbrock, Rath A-arms, Dyna FS, Rath Rear Hubs, PEP Shocks (built by Rath), Flexx bars, Hiper Wheels, Razr 2 Tires, P&P cylinder head (Nicholas Cycle), Rath Head Pipe, Pro Armor Kill Switch, Yoshimura slip-on, Pro Armor nerfs, JE 12.5:1 Piston, Trail Tech Dash and Endurance Computer, Home made radiator scoops and chassis skid, PRM Bumper and Grab Bar.
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