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fsae_2011

help please, manual decompression release

6 posts in this topic

Greetings,

can anyone please measure these dimensions if they happen to have this part handy. if someone could help give us the dimensions, it would greatly help us as we could then make one ourselves.

2njhumx.png

<a href="http://tinypic.com?ref=2njhumx" target="_blank"><img src="http://i52.tinypic.com/2njhumx.png" border="0" alt="Image and video hosting by TinyPic"></a>

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or better yet, get hotcams to donate an auto-decompression camshaft to your project, and then just plug the hole that came out of with an 18mm freeze plug!

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or better yet, get hotcams to donate an auto-decompression camshaft to your project, and then just plug the hole that came out of with an 18mm freeze plug!

or get your local Yamaha dealer to donate a stock YZ450F cam, as it also has the auto decompression feature.

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Thanks for all of the replies. The reason we are going for the manual release is simply due to the issues we ve been having with the automatic one on the cam. We keep getting stuck on the compression stoke as we've bored and stroked to 502 and upped compression to 13:1, and the starter motor doesn't seem to be able to handle it

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Also every dealer we check is sold out of them and we need this thing by friday. We have all the machines to make it, just need some dimensions

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