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pulled the head this morning - only took 1 1/2 hrs and probably could've been done much faster if i had a helper. it actually surprised me how easy it was to do this time vs. the first time, and despite the fact that i'm doing a bunch of work that i shouldn't have to be doing, it was a rather pleasant morning wrenching due to the following: none of the fasteners were rusted/stuck/broken/missing i have a header vs. the oem exhaust manifold, so i could actually see the lower studs i have all the tools i need (u-joint socket extension is a godsend!) i now know my way around the engine bay it wasn't raining... that hard (love seattle winters)off to get some packing materials and get it in the mail today!

Got a huge truck by my house yesterday which brought me a big Plywood box from USA directly from the Airfreight-carrier Heavy duty stuff It contained a part both my chassis didn't have in needed quality and which i've been looking for for a while now.. But finally Thanks to an ebay auction from a great guy called Kevin i finally have a straight Roof without any sunroof-patch-repairs or a ton of bondo. Even the roof liner inside si there. Great news and big thanks to the seller Will completely unpack it when needed for easier storage

Thank you all for your help!!! I will let you know when I install and adjust my distributor

FWIW, Z cars are not the best winter drivers. They are light in the rear, and don't have any sort of traction control. You can do 360's with out hardly thinking about it...ask me how I know. Cheers, Mike

Yes... Total mechanical advance is initial timing + dizzy mechanical advance. In the example 15 + 17 = 32 32 degrees ( example ) is the figure that you check with your Dial Back timing light to get maximum power, with Vacuum advance disconnected. The additional Vacuum advance of approx 15 to 20 degrees is only required and supplied under light throttle, light load and high engine vacuum conditions. That is when the cylinder charge density ( VE ) is very low and the air/fuel mixture needs to be ignited earlier in the combustion cycle to ensure that the burn cycle is completed at the proper time ATDC. As soon as more load and more throttle opening occurs, the additional vacuum advance will drop off as the cylinder charge desnsity ( VE ) increases. Note: Do not confuse Air/Fuel mixture density ( Cylinder charge density or VE ) with Air/Fuel Ratio. They are two entirely separate things. IE: You could have a 14.7 to 1 AFR ( Stoich ) at 100% VE and a a 14.7 to 1 AFR ( Stoich ) at 50% VE. The 50 % mixture would have to be ignited earlier in the combustion cycle ( Vacuum advance ) because of the slower burning of the flame front. Lower charge density = longer flame front burn time ( given all other factors the same ).

On the bright side, you can at least see where the hidden rust was.