YamahaNutz
Active Member
Thought I'd share this. I couldn't find any thorough info besides parts lookup showing different part numbers that don't cross different year ranges.
This will show camshafts will only swap between the Warrior '87-'04 and the '04-'06 Raptor*(see down further). The Raptor 350 '04-'13 is a different camshaft.
*'04-'06 Raptors use a steel sleeve on the camshaft and use the same flat roller bearing on the inside. You can use a Warrior cam in these year Raptors but must use a Warrior timing chain gear.
Head port sizes, chamber, covers, valves, springs are the same.
Yamaha added a button to the end of the Raptor camshaft. Presumably to help control oil flow through the cam.
Rockers were changed in the Raptor head to have a wavy spring clip attached. This would keep the rocker arm fixed to one side and create a gap. Maybe to help oiling? Use the clip if you use the Raptor rockers.
Camshaft gears will not interchange. The Raptor 350 is machined thinner where it bolts to the camshaft. The camshaft is physically longer, and they recessed the gear to keep the timing chain aligned. The flange and pin are shorter on the Raptor cam. A Raptor timing gear will not fit a Warrior camshaft as it will not sit flush before the bolt tightens down.
The front(cam gear side) bearing is the same size, but the Raptor 350 uses an unshielded open bearing. The Warrior uses a one side shielded bearing. I believe the warrior bearing was sealed on one side in an attempt to trap oil in the bearing. You can remove the seal if your replacements come with it, if you choose.
Inside bearings are completely different. The Warrior uses a flat roller pin bearing. '04-'06 Raptor has a sleeve pressed on to use the same flat roller bearing. Also appears Warrior cams have this same sleeve pressed onto them. '07+ Raptors were changed to use a ball bearing and do not have the sleeve. The inside bearing surface of the cam is physically smaller and you must use a Raptor cam for these years.
Again, the '07+ Raptor uses a ball bearing. It appears Yamaha tried to upgrade the inside bearing. Raptor 350 uses a one side steel shielded ball bearing. Check your replacements as you probably should use a one side steel shielded bearing over a rubber one. It holds oil pressure back and forces it through the camshaft.
Factory Warrior/'04-'06 Raptor camshafts have a hardened sleeve pressed onto the camshaft for the inner roller pin bearing. Be weary of cheap replacement camshafts as they don't have this.
Another thing to note is a harder face material that is attached to factory rockers. The cheap aftermarket rockers do not have this. Don't use them. This is a picture of a factory rocker.
The lobe profile is a bit different. All the changes are not necessarily an upgrade, but engineered differently. Probably not worth swapping for any gain in performance. Just make sure to get the correct parts and change oil as required.
This will show camshafts will only swap between the Warrior '87-'04 and the '04-'06 Raptor*(see down further). The Raptor 350 '04-'13 is a different camshaft.
*'04-'06 Raptors use a steel sleeve on the camshaft and use the same flat roller bearing on the inside. You can use a Warrior cam in these year Raptors but must use a Warrior timing chain gear.
Head port sizes, chamber, covers, valves, springs are the same.
Yamaha added a button to the end of the Raptor camshaft. Presumably to help control oil flow through the cam.
Rockers were changed in the Raptor head to have a wavy spring clip attached. This would keep the rocker arm fixed to one side and create a gap. Maybe to help oiling? Use the clip if you use the Raptor rockers.
Camshaft gears will not interchange. The Raptor 350 is machined thinner where it bolts to the camshaft. The camshaft is physically longer, and they recessed the gear to keep the timing chain aligned. The flange and pin are shorter on the Raptor cam. A Raptor timing gear will not fit a Warrior camshaft as it will not sit flush before the bolt tightens down.
The front(cam gear side) bearing is the same size, but the Raptor 350 uses an unshielded open bearing. The Warrior uses a one side shielded bearing. I believe the warrior bearing was sealed on one side in an attempt to trap oil in the bearing. You can remove the seal if your replacements come with it, if you choose.
Inside bearings are completely different. The Warrior uses a flat roller pin bearing. '04-'06 Raptor has a sleeve pressed on to use the same flat roller bearing. Also appears Warrior cams have this same sleeve pressed onto them. '07+ Raptors were changed to use a ball bearing and do not have the sleeve. The inside bearing surface of the cam is physically smaller and you must use a Raptor cam for these years.
Again, the '07+ Raptor uses a ball bearing. It appears Yamaha tried to upgrade the inside bearing. Raptor 350 uses a one side steel shielded ball bearing. Check your replacements as you probably should use a one side steel shielded bearing over a rubber one. It holds oil pressure back and forces it through the camshaft.
Factory Warrior/'04-'06 Raptor camshafts have a hardened sleeve pressed onto the camshaft for the inner roller pin bearing. Be weary of cheap replacement camshafts as they don't have this.
Another thing to note is a harder face material that is attached to factory rockers. The cheap aftermarket rockers do not have this. Don't use them. This is a picture of a factory rocker.
The lobe profile is a bit different. All the changes are not necessarily an upgrade, but engineered differently. Probably not worth swapping for any gain in performance. Just make sure to get the correct parts and change oil as required.
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