Part 2: Reading Plugs, pistons, and valves (with Pics)

[Bruce Plecan]

The color you call orange is normally referred to as beige / light brown,
normal with conventional gas.
See how there is no carbon (orange <g>) at the sides of the pistons?
That is where your gas washing the cylinder wall and removeing the oil film
the rings need to transfer teh heat off of them, and to prevent excessive
cylinder where
Trash them plugs, look how the side electrodes mask the spark from the
chamber (also explains all the timing the engine acts like it wants), poor
intial flame travel.
Like I said cheap ol autolites and read em often, maybe not all bit at least
some.
Saying 6+8 hard to get to isn't valid IMO, I had angle plug heads with the
Edelbrock TES, and even with my back could easily do them.
All the plugs are a tad rich.
Plugs do look to have the noses of the center electrode knocked off (had to
guage how much in these photos).
Down a little in fuel, good autolites, indexed .030-.032 gap and have fun.
If the Ignition system is up to the task.
Ultimate rear end, well matter of opinion <g>
remember my comment on knocking the corners off of the pistons?.  This shows
phase 1 on that happening.
Bruce



> I have pics of my head gasket swap (teardown).  Any advice you can offer
> would be great.  All in all ... I 'think' everything looks good.  But,
this
> is only the second time I have had the heads off.  The only problem is
that
> I see lots of Orange.  I don't know why everything is so Orange.  Anyone?
>  I have pics of the plugs, the pistons, and the head chambers from each
> side.
>
> Also, these pictures clearly document how the rear cylinders run rich with
> the TPIS MiniRam.
>
> Go to ...
> http://www.picturetrail.com/traxion
> Click on '1990 IROC Z28 Pictures' and then you can view thumbnails on the
> left.
>
> BTW - www.picturetrail.com is pretty cool.  I uploaded all of my pics
through
> this free service.
>
> Again, any advice or help is appreciated.
>
> Tim

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