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Everyone loves how I like to harp on about Cosworth. I'd put lots money on them having done the most extensive R&D of any of the FI kits avaliable for the FA20. So here we go, they have tested the rods. Snapped rods. Done materials analysis on the rods. Done engine simulations using some cleaver software. Done enduracne testing on an in house engine dyno. Done a number of trackdays all over europe in sub zero to 35C temperatures.
Their engineers determined 250WHP was the absolute max they could stretch from the stock block and maintain 100k mile levels of reliability.
I know of a centrifugal charged car (not naming anyone or any kit) recently blew a rod at about 300WHP. The other 3 rods were showing signs of high cycle fatique too...
I feel for guys like Delicious as they always get blamed. Just because one car survives 350WHP for 3 years while being thrashed, doesnt mean that is a safe power level for every engine.
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