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I took the falcon down to the local goodyear tyre & auto this morning to get a nail removed from the front tyre and discussion turned to corolla's and k motors. He told me he had built and raced a reliable n/a 3k with 165hp @ 8000rpm at the rear wheels, dyno tested. The 3k wasnt in a corolla but in some type of sprint car and it ran on methanol (sp?) but would still have similar hp on premium I would think. The guy says he spent a heap of time, money and a few blown k blocks finding the right set up but when it was done he could run the engine at 8000rpm continuously for the whole race meeting for the whole year without a rebuild. Said it would actually spin up to close to 11,000rpm if he really pushed it but was of no benefit to do so. Best of all he has all the specs at home includin the dyno charts and has offered to share them with me if I want them. Some of the specs include 3k block rebored to 1220cc, mazda 121 pistons, 5k head, twin webers with fuel regulator and a whole heap of other assorted bits and pieces. He claims it can be built for about $1,000. Now I just need to convince the Mrs that it's worth spending even more $$$ on a car that will sit in the garage more than it gets driven. Mmmmmm......165hp 3k motokhana corolla, watch out Colin :down:

i believe you can get a 3k to make 165hp naturally aspirated i don't believe it's going to be a very useable car in motorkhana, a motorsport where you barely get out of first gear, and having throttle response across the entire rpm range is a useful thing. nor do i believe such an engine would suit a street car. it's a specialised, high-speed circuit racing engine, and nothing else i also believe you can get a K motor to hit 13000rpm, i've heard of this happening and don't doubt it for a second. however, doing this won't make your engine last very long at all we all know from others' experience that the blocks suffer from poor harmonics above 8000rpm and crack, and the the crank and rods will weaken substantially above 9000rpm in a 3k, and 8000rpm in a 4k