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Old 02-19-2017, 06:19 PM   #41 (permalink)
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Partygurke - '90 VW Polo 2F
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Head is ready, Pistons should lathe down about 1mm so i could install a smaler headgasket (0,3mm instead of 1,5mm) to increase the combustion from 9,3 to 11,2.

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Old 05-12-2017, 01:41 AM   #42 (permalink)
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In progress.
At this time i had problems with the hydros. They "push up" my valves because the realy high oilpressure at cold start (about 6bar).
Buy other hydros and would test it tomorrow.

But when the engine is warm, "the power flows through!"
Fuel consumption about 3,5-4l/100km at this time.

Yesterday i start to build my own EFI.
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Old 05-16-2017, 06:16 AM   #43 (permalink)
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Hi,

now the engine is almost finished (only the aircleanerbox is not in place)

I lathe the valves so i cut it about 2mm (i musst lathe a new notch for the cones). The reason : I would use light 50g hydraulic valve lifter from a BWM. These dont push my valves "half open" when the oil pressure rise above 2bar.

After that i weld the new intake Manifold. 0,82l Plenum, 190mm tube-length, 28mm tube-diameter, 150mm throttlebodylength,58mm throttle diameter.
I worked until 7am.. (about 20h without a break )

And now : The engine is like it should. Diesel-like but gasoline driven.
(PS. the performance-chart was driven with AFR 16,2 !)

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