OneFastGSR
Member
R13 don't think it's something so bad until you inspect it all. The fact the noise showed up after you've hit the rev limiter, Is a good reason to be worried but you havn't got to inspect anything yet, Or you already did and havn't said anything lol. Drain the oil check for shavings put new oil in, Pull valve cover and do an adjustment. Or if you have a compression tester go ahead and do a test on it, That should knock out a bent valve I believe if the compression is the same across all cylinders. Not 100% on that though, I know a leakdown test should tell you for sure.