One of the MAJOR issues with the silicon/aluminum engines is that they ARE subject to cylinder scuffing especially in hi-load, low RPM
situations. GM saw this in the early Vega ( one of the first aluminum-silicon engine designs) as has Porsche in the 944/968 4 cylinder engines.
The V8's I've looked at have all had oil issues due to adverse/high side loads on the piston or oil contamination causing cylinder wall
damage.
Since I've helped rebuild a dozen or so Alumisil engines from multiple vendors that's what I've seen.
I still think the Nikisil rumors are just that- rumours.
Best regards-
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Paul R. Cole:
'83 Urq Helios Blue ( SAR) #900335
'91 CQ Indigo Mettalic Blue, 165k miles- daily driver
'91 200 TQ 20V- new DD @ 263k miles
'91 200 TQ 20v- needs a few things but going strong @358k!!. Old cars-84x2 CGT, 89 200tq
'90,91 V8q- SAR
Bloomington,MN
pcolegrps@comcast.net # Powered by OS/2 Warp 4
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