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More work on the head. This time gasket matching the exhaust ports. The manifolds match the gasket to the T but the ports in the head are noticeably smaller. In the pic you can see the carbon ring around an untouched port. This ~4mm ring represents how much smaller than the manifold that the port is.
This is just a lot of tedious time spend with a carbide cutter. I opened up the ports to match the gasket and then blended back towards to valves. Using a small spring loaded bore gauge allowed me to keep the ports a consistent size. I didn't touch the bowls or the SSR.
Next step is dropping the head off at my machinist for a skim cut and a valve job.
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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start
90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff
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