11:1 Piston and Cam Combination Help - Yamaha ATV Forum
 
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post #1 of 2 Old 02-19-2018, 09:58 AM Thread Starter
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Location: Upstate NY
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11:1 Piston and Cam Combination Help

Currently the bike is stock except an aluminum DG slip on exhaust (stock header) and airbox mod with K&N filter. I am looking to upgrade to a standard bore 11:1 Wiseco piston but I am having trouble deciding on a cam to go with it.

The obvious option would be a Hotcam, I would probably get a Stage 1 as I only trail ride and don't want to sacrifice low end. But I am open to opinions on that as well. Maybe a Stage 2 would be a better option since I will be gaining some low end from the new piston anyway?

The other option is to go with a .430 grind Webcam, obviously more expensive and obviously better. They are $196 plus a core charge of $185 so I would have to front all the money till I got the new cam installed. I planned on upgrading valve springs either way but the Webcams are a huge upfront cost.

My main question is: What about valve clearance on the new piston? Can I just go with manufacturer recommended lash setting because the new piston will be "cut out" for valve clearance?

Any help is greatly appreciated.

Current Garage:
'89 Yamaha Warrior
'91 Suzuki dr350
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post #2 of 2 Old 02-20-2018, 10:47 AM
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i would go stage one myself. when you start trying to wring to much out of these motors heat becomes a huge issue and no matter what cam you use it will not be a banshee or yfz. that combo will make a good trail machine.
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