Valve timing manufacturer reccomendations

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NeilD

N D

Gold Member

1 Post

Thailand

Hey guys,

Purchased race cams for a Yamaha R1 directly from Yamahas race department. The install details are pretty sparse. They only mention:

Valve timing (event angle): INT 105 deg. EXT: 109 deg.

Does that most likely refer to full lift @105 degrees ATDC for the inlet valve and full lift @109 degrees BTDC for the exhaust?

Appreciate any help

Gord

Gord No

VIP Member

3357 Posts

New Zealand

That is how I would take it.