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Showing results for tags 'lifters'.
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Any help would be appreciated. I had a spark plug ceramic crack while doing a top speed run lost half of the power at 200kmh. Pulled over and the car sounded like a wrx, putted home pulled coil packs found bad spark plug installed all new plugs now I'm left with this slap that you can only hear up to 2500rpm 20180409_091851.mp4 20180409_091851.mp4
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?
RB26 Head questions Hey guys, I have tried to do some research and I can not seem to find the right threads to answer my questions. I'm currently doing a rebuild on my RB26 head and have a few questions. My current parts list I have is Brian Crower single spring & titanium retainers, Supertech valve guides, Brian Crower +1MM Intake & +1MM Exhaust valves, Kelford 280 10.5mm lift cams And what I can not find is if it's acceptable to reuse the OEM Valve Keepers/Locks and what the OEM Camshaft Studs are rated to. Are these MUST have things when doing the head?