It was in fact a special mix of chocolate & caramel, specially formulated for the fast Sprint engine.
I finished stripping down the engine tonight.
This looks to be the worst bit. Quite a lot of surface corrosion on the cam lobes & the rocker assembly is gunked up. A couple of the valves seem to be stuck as well. I think I'm going to have fun getting the buckets out.
The bores look fine with just a bit of corrosion where the pistons where at rest. The pistons themselves look very good with hardly any scoring on the thrust sides, except of course for no. 4. Why is that? All the bearings look good with only slight wear on them.
The thrust bearing nearest the rear of the engine is knackered & is only waffer thin.
The waterpump looks very new but I will have to rebuild it as that
was the spring from the top of the oil seal that was poking out. I will also change the impeller.
Sprintless for the first time in 35+ years.
... Still Sprintless.
Engines, Gearboxes, Overdrives etc. rebuilt. PM me.
2012 Porsche Boxster 981 S
Brake calipers have now been refurbished with new seals and a nice coat of Hammerite silver. I managed to get all the exhaust sections apart. That knotted wire wheel comes in dead handy for cleaning bits, I even went over the stainless steel exhaust to get the rust off. So tomorrow I shall bolt a few things together and I may even start stripping the engine........after I've watched the Chinese GP in bed of course. 
Either that, or it's McDonalds' latest type of burger relish.
