R34 GT-Four RB26 Time Attack Build
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By TurboTapin · Posted
Send your oil out for analysis for peace of mind. -
Are you guys daily driving your skylines?? Its already pretty cold here in the U.S. already where you dont need the AC now. Its nice fall weather. -
Oh you already converted to R134a? Interesting. Is there a kit to do that? And i didn't know the evap was under the dash. Prayers up for you bro haha hopefully its something easy to fix. AC systems have always been the hardest thing for me to wrap my head around.
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The car is a manual. The fuild in there has been replaced too. There was actually milkshake under the radiator cap. In fact, the whole coolant was brown milkshake last year. I drained all the brown liquid out via radiator. Replaced the OEM radiator with a Koyo and Replaced all the coolant hoses under the plenum. I re-filled with fresh green coolant, and now i see brown spots contaminating the coolant again. Its not completely taking over like before though. I really hope its just left over rust not flushed out properly.
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I took it back to jem to get the full tune done and again it had its problems which meant it didn’t get finished this is the dyno sheet on 98 at 22psi the rpm vs speed scale is off (the logs prove this) but gives an idea of what the curve actually looks like now to the issues of why we couldn’t continue,first the tail shaft center bearing was completely flogged out second it was getting a voltage drop as it came onto boost and would go from 14v to 12.5 third it has “noise” on the 5v sensors and gives errors on the dbw on cold start he also said 22psi is the wastegate pressure (it has 14psi gates) and would like the base pressure to be lower particularly on 98
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