Search the Community
Showing results for tags 'failure'.
Found 4 results
-
Hey guys, Has anyone blown the oil pump? what symptoms came up? really want to know, if someone could be bothered replying that would be great thank you Marni
-
Tomei oil pump failures I tried searching but ran across the spline drive oil pump conversions and hadn't really heard bad press about the Tomei oil pump until then. I read about ONE failure so far and the thread did not provide Tomei's resolution to the pump issue so I'm curious if this is actually a potential problem or not. I have a Tomei pump and am curious if anyone has seen one broken and under what circumstances. I'm limiting my car to 8k, but I do bang the limiter quite frequently and was just thinking about going a bit higher soon. Some say the cause of failure is oil cavitation from temporarily starving the pump (which means a dry sump would be the only real cure), and some say it's simply the 2-flat-drive stock pump orientation that kills oil pumps. I'm looking for actual evidence if possible because I'd like to live the rest of my engine's life in a happy state of knowing the chances of oil pump failure are very slim. Patrick
-
RB25 lifters bleeding off cannot solve! Hi guys, iv got a brain teaser for you all. Firstly, overview. I have a built 25 in my 33 running tomei pump 2x 1.3mm restrictors etc etc. Ran 4 years problem free. many track days, lots of spirited driving and so on. Then I decided 22 pound wasnt enough so i put in 85lb supertech springs with TI retainers and camtech 272 9mm lift cams. (a 'drop in cam') From there on I instantly had troubles with lifters. originally dropping one or 2 in and out and in no time i was losing all lifter pressure and it sounds exactly like first start up on a new set of lifters. This is all however at high RPM. Anything under 3k is perfectly fine. but one big rev and I lose all pressure and it takes about 5-10 mins idling around to recover. And i guarantee its the lifters. Heres what iv done so far, bumped oil pressure from 65 to 85 pound. Zero change. Replaced all lifters with genuine low km ones i have spare. Zero change. Checked cam type with camtech, all good. checked spring heights, all good. Checked lifter doesn't go past the gallery. all good. Camtech have suggested its the vct bleeding off pressure, it cant be as its got its own feed. We have no idea what is going on. All ideas welcome! Anyone got a similar story or a fix?
-
New engine, seized 2 seconds after first start Brand new engine failed and stalled within 2 seconds. Would not restart. Mechanic found the engine wouldn't turn by hand/wrench. Found the exhaust camshaft is seized. number 1 cap nearest the cam gear is wrecked.Couple bent valves and a shredded timing belt (from the skipping). I suspect a few things like the cap was replaced or misplaced, torque sequence, or timing belt tension too high but I'm not the mechanic. Any thoughts? Specs don't matter but this is a big build. Engine is all new.
