before taking hold of the head - Toyota Corolla Levin, 1.6L, 1999

so boys and girls, do not repeat my mistakes!

In connection with the need to increase the power of an already rather large engine (172 real forces at the stand at 7800 rpm at 1597 cc), a decision was made to even more force the engine, up to about 200 forces (oh, how ridiculous it sounds :)

200 forces, well, where with them, but do not forget that the car weighs a little over a ton with an aim to get rid of all sorts of unnecessary :)

And forcing begins (and often ends) on the cylinder head, it was not possible to put a stroker, etc., because the engine will spin more dumber and lose its incendiary

So, the cylinder head, what we have:
2 shafts, 20 valves 5 per cylinder, 3 for the inlet, 2 for the outlet, the inlet diameter is such that there is nowhere to increase them

standard inlet shaft phase 250 degrees, lift 7.5mm
exhaust 250 degrees lift 7mm

we introduce: shafts with increased phases and lifts, 288 degrees and 9 mm each TODA
reinforced valve springs TODA
split gears TODA
reinforced timing belt Greddy we grind the
cylinder head channels

The head itself was originally made well, all the channels are straight, the only thing that can be done is to remove the steps, which was done.
then everything was introduced, set to cold, and operated, but the machine began to eat oil very actively, why? - because no attention has been paid to the valve guides.

this week I take the cylinder head from the OKB Dinamika, where they make and install bronze guides for me, take a picture at the exit and post it here ...