Timing confusion Options

[914itis]

Ok, either I am dumb, confused or a combination of both.

I am having some other issued with my car and decided to recomfirm timing once again. I went back to the pelican web site to make sure i got it right, then run into this. I was able to fing my timing mark on the impeller. I first followed the main instructions with thr first picture, showing how to to mark the 27 btdc



Then at the end there is a post by the much respectable Dave, showing an impeller with both the tdc and 27drgree btdc. (see pic #2)



the blue arrow shows factory tdc, red shows factory 27btdc, according to the instructions and template, should'nt 27btdc on the brown arrow?

[TheCabinetmaker]

Lotus Joe is correct, but thats not the problem. The notch in the top pic is not tdc. That notch is in the shroud, not the fan, and is the reference point to set the timing. The white mark on the fan where the red arrow points is tdc Place the tdc mark on the template on the red arrow and the 27 degree line will line up with the mark on the fan. Just put that mark on the notch and your timing will be spot on. Don't forget, dwell changes where that mark will be. All fans are not marked equally. some have tdc and 27degrees, some just have tdc, and some just have the 27 mark. Some have no marks at all.