I've put nearly 1,000 miles on my S50us swap so far. Loving it, though I had my share of hiccups along the way. At this point I don't doubt the reliability of my car, which is nice after the blood/sweat/tears/cash poured into it.
Anyways, I'm still working out a few issues that could be major. The idle was crap but steady, so I replaced the ICV and that solved it. However, now that I idle steadily at about 6-700rpm (which I still believe is a bit higher than it could be) I get a lot of vibrations. It does stumble and probably misfire here and there, but really the idle seems decently healthy aside from the fact that I can feel the engine so much. When driving, it's nice and smooth. I have new e28 5-series motor mounts, new spark plugs. Does anyone have a smooth idle? Smooth as in vibrations, not engine speed.
Also curious (though I suspect is related to vacuum and/or the TB) is the noise I hear during part-throttle from idle/stop. Sounds almost like dieseling, a very strange engine-clearing-throat noise coming from under the hood that only occurs from idle (parking, taking off). Doesn't seem bad but can't be good.
Aside from those I have the common lifter tick. However, I think it is a bad case. Is there any harm in continuing to drive it with a loud case of the tick (don't really have a choice)? I don't remember a tick until a pseudo-track-day where I finally got to wring the car out a bit. I did not flog it as hard as I could have, I am running sport springs only. Figured that it was the heat and lateral acceleration, but ever since then the tick comes back once the car (water) is up to operating temp. Sometimes it's very loud, but that's when I check the oil to see that I've burned some and have room to add. I ran Rislone 100QR and that helped alot, but was only temporary. I run 15w-40, could probably use a change after the additives.
Speaking of burning oil... I am fairly certain that's another problem. I seafoam'd the motor a couple weeks back, the smoke show wasn't that spectacular but the motor felt better. A few days later I started to notice occasional smoke after driving hard. At first it was very bad, like omg my car is fubar'd, but it's tapered off in frequency and intensity. Has anyone experienced residual seafoam burning off later, perhaps trapped in the intake? Coolant level is constant, and the oil cap is never milky. But, I'm burning enough oil that I believe it could be showing up in my exhaust and I probably need a rebuild on this motor.
I'm mostly looking for feedback on whether I can take 6-10 months to save up for a proper rebuild from this point. Sucks, I should have rebuilt first, but I basically had one shot to do the swap before starting work so I took it. I won't be able to pull the motor on my own again, hopefully HPF here in portland can hook me up on some NA work.
Anyways, I'm still working out a few issues that could be major. The idle was crap but steady, so I replaced the ICV and that solved it. However, now that I idle steadily at about 6-700rpm (which I still believe is a bit higher than it could be) I get a lot of vibrations. It does stumble and probably misfire here and there, but really the idle seems decently healthy aside from the fact that I can feel the engine so much. When driving, it's nice and smooth. I have new e28 5-series motor mounts, new spark plugs. Does anyone have a smooth idle? Smooth as in vibrations, not engine speed.
Also curious (though I suspect is related to vacuum and/or the TB) is the noise I hear during part-throttle from idle/stop. Sounds almost like dieseling, a very strange engine-clearing-throat noise coming from under the hood that only occurs from idle (parking, taking off). Doesn't seem bad but can't be good.
Aside from those I have the common lifter tick. However, I think it is a bad case. Is there any harm in continuing to drive it with a loud case of the tick (don't really have a choice)? I don't remember a tick until a pseudo-track-day where I finally got to wring the car out a bit. I did not flog it as hard as I could have, I am running sport springs only. Figured that it was the heat and lateral acceleration, but ever since then the tick comes back once the car (water) is up to operating temp. Sometimes it's very loud, but that's when I check the oil to see that I've burned some and have room to add. I ran Rislone 100QR and that helped alot, but was only temporary. I run 15w-40, could probably use a change after the additives.
Speaking of burning oil... I am fairly certain that's another problem. I seafoam'd the motor a couple weeks back, the smoke show wasn't that spectacular but the motor felt better. A few days later I started to notice occasional smoke after driving hard. At first it was very bad, like omg my car is fubar'd, but it's tapered off in frequency and intensity. Has anyone experienced residual seafoam burning off later, perhaps trapped in the intake? Coolant level is constant, and the oil cap is never milky. But, I'm burning enough oil that I believe it could be showing up in my exhaust and I probably need a rebuild on this motor.
I'm mostly looking for feedback on whether I can take 6-10 months to save up for a proper rebuild from this point. Sucks, I should have rebuilt first, but I basically had one shot to do the swap before starting work so I took it. I won't be able to pull the motor on my own again, hopefully HPF here in portland can hook me up on some NA work.
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