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Okay, so the car is a 1992 r32 GTR with 124xxx kms. Bought with blown turbo seals, hadn't run in a year. Starts okay (smoked a lot) compression tested well within normal on all cylinders.
took entire intake system apart. Flushed plumbing. poured more than 2 qt of oil out of intake/intercooler system. (seems the prior owner had run it hard despite having blown seals.) cleaned everything as much as possible.
replaced turbos with used, but solid, stock units. welded two small rust holes in downpipe, added 3" test pipe to connect to preexisting 3.5" cat-back system.
Has HKS hi-flow filters installed, cusco oil catch can, tomei manual boost controller (not hooked up, still running stock boost solenoid) recirculating BOV's still on, as is recirc plumbing.
Turbos installed nicely, with new gaskets. (mostly) Oil free plumbing reinstalled with new gaskets as needed. has new plugs, and new oil.
car starts nicely. idles at about 1100-1200. doesn't smoke on startup. oil pressure gauge reads 4 kg/cm3 at cold start at -2.5 degrees. However, after warming up, starts to smoke (white), with blue tint under load. smoke gets worse as car warms, and is pretty intense when under boost.
once warmed and ran, idle raises to 1500-1600. will dip occasionally, but is pretty constant. oil pressure drops to 3 kg/cm3 once warm, even though idle is higher.
Im assuming (as the temp has been close/below zero the past few times) that the smoking is being caused by residual oil in the combustion chamber/intercooler/piping getting heated up and fired through the head. And given the amount of oil I poured out, I suspect this will take a while to correct.
have had a few hiccups in the oil department, fitting failed on catch can, led to oil spray over engine bay. repaired that. Dried out rubber on dipstick led to oil pressure blowing out dipstick, and again more oil, on clean side of engine.
Have topped up oil, and coolant (car was apart for almost 6 months, so naturally some air bubbles in systems. primed turbos with oil to not dry start.
tried unplugging O2 sensors to correct idle, as they may be fouled from oil. didn't make a difference.
exhaust smell, (and fuel gauge) suggest running rich. throttle response is good, but as smoking gets worse, seems to lag a little. both turbos boost nicely, and no warning lights.
Future plans include ditching MAF in place of MAP system, top mount manifold, bigger turbos, and the usual. But for right now, want to get it working.
Not sure where to start. If it is still sending oil out the exhaust, would rather not foul a $350 set of sensors.
Have cheap autometer air/fuel ratio gauge, but hesitate in installing because sensors may be toast, and more importantly, plan to buy wideband in very near future.
While this may sound noob-ish, this is not my first project. Im just a little lost, as I don't know what else was done, and would rather not spend a ton of money taking things apart (yet). And have yet to locate a decent manual that isn't in Japanese.
Basically, I want to get it running smoothly, then upgrade.
ANY help in any area would be great.
also, where do I get nistune? just read about it in another forum post, and think that might be a huge asset.
took entire intake system apart. Flushed plumbing. poured more than 2 qt of oil out of intake/intercooler system. (seems the prior owner had run it hard despite having blown seals.) cleaned everything as much as possible.
replaced turbos with used, but solid, stock units. welded two small rust holes in downpipe, added 3" test pipe to connect to preexisting 3.5" cat-back system.
Has HKS hi-flow filters installed, cusco oil catch can, tomei manual boost controller (not hooked up, still running stock boost solenoid) recirculating BOV's still on, as is recirc plumbing.
Turbos installed nicely, with new gaskets. (mostly) Oil free plumbing reinstalled with new gaskets as needed. has new plugs, and new oil.
car starts nicely. idles at about 1100-1200. doesn't smoke on startup. oil pressure gauge reads 4 kg/cm3 at cold start at -2.5 degrees. However, after warming up, starts to smoke (white), with blue tint under load. smoke gets worse as car warms, and is pretty intense when under boost.
once warmed and ran, idle raises to 1500-1600. will dip occasionally, but is pretty constant. oil pressure drops to 3 kg/cm3 once warm, even though idle is higher.
Im assuming (as the temp has been close/below zero the past few times) that the smoking is being caused by residual oil in the combustion chamber/intercooler/piping getting heated up and fired through the head. And given the amount of oil I poured out, I suspect this will take a while to correct.
have had a few hiccups in the oil department, fitting failed on catch can, led to oil spray over engine bay. repaired that. Dried out rubber on dipstick led to oil pressure blowing out dipstick, and again more oil, on clean side of engine.
Have topped up oil, and coolant (car was apart for almost 6 months, so naturally some air bubbles in systems. primed turbos with oil to not dry start.
tried unplugging O2 sensors to correct idle, as they may be fouled from oil. didn't make a difference.
exhaust smell, (and fuel gauge) suggest running rich. throttle response is good, but as smoking gets worse, seems to lag a little. both turbos boost nicely, and no warning lights.
Future plans include ditching MAF in place of MAP system, top mount manifold, bigger turbos, and the usual. But for right now, want to get it working.
Not sure where to start. If it is still sending oil out the exhaust, would rather not foul a $350 set of sensors.
Have cheap autometer air/fuel ratio gauge, but hesitate in installing because sensors may be toast, and more importantly, plan to buy wideband in very near future.
While this may sound noob-ish, this is not my first project. Im just a little lost, as I don't know what else was done, and would rather not spend a ton of money taking things apart (yet). And have yet to locate a decent manual that isn't in Japanese.
Basically, I want to get it running smoothly, then upgrade.
ANY help in any area would be great.
also, where do I get nistune? just read about it in another forum post, and think that might be a huge asset.
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