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Guest Anonymous

Mysterious Cam Shaft: 12106100802

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Guest Anonymous

Just trying to figure out what I bought this weekend.

The cam has this stamped on it

12106100802 985B(8?)

I see some other folk have asked similar questions but nowt for answers

http://www.2002faq.com/talkshop/forum/messages/42761.html

http://www.2002faq.com/talkshop/forum/messages/27812.html

http://www.pelicanbbs.com/posts/94967.htm

http://www.bmw2002faq.com/talkshop/forum/messages/63705.html

It'd be cool to know what this cam is. I had planned on putting a 292 into this engine, but who knows.. maybe I've already got one??

cheers

-z

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Guest Anonymous

Put it on a cam doctor to find the exact timing. G

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Guest Anonymous

02_autumn.jpg

"For each lobe there is an opening and closing point. Let's say you are measuring an intake lobe on a camshaft in the engine using a dial indicator and a degree wheel. Once the lifter rises off the base circle 0.006 inch, let's say that the degree wheel reads 20 degrees before top dead center (BTDC) and closes 90 degrees after bottom dead center (ABDC), then you can add those two numbers together along with 180 degrees and come up with the advertised duration: 20 + 180 + 90 = 290 degrees. This same formula can also be used to determine duration at 0.050 inch tappet lift."

found it here: http://carcraft.com/techarticles/116_0403_basic/

i'm not that technically inclined, but it was an interesting read.

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Guest Anonymous

I'll have to see if I can come up with those instruments to do some measuring. I'm not technically minded either -- thus the slow painful transformation from clueless idiot to semi-informed idiot :)

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