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I've done tonnes of trackdays in the past with Elises and Exige using the 2ZZ-GE engine and I never noticed any problems with the lack of a baffled sump. Is it just a problem when you downshift and jump over the limiter? If so then it's understandable that something is going to let go.
ricky2slicky-
No idea about the battled sump, it is what a few people have mentioned to me to look for when looking at engines, also mentioned running the 1zz sump as that is baffled. These engines don't like any hint of oil starvation. Have you seen pictures of a oil pump that has over revved?
There seem to be issues with the engines burning oil too, few mr2 for sale with that problem. The bore lining can be an issue I have been told.
lynx
How much work to make the f20c then the electrics to make the magic happen?
190bhp and the engine fits straight in the car, all the electrics are there and just ecu swap. Enough people have done this, seem that the engine doesn't have a battled sump so suffers from oil starvation on track days. If the car is over reved by gear change the oil pump grenades itself and scraps the engine. Same engine is fitted to the Elise....
Finding an engine that is checkable and not more than buying a cheap celica or corolla.