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mazzotti

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About mazzotti

  • Rank
    Newbie

General Info

  • Location
    Australia WA
  • Car Type
    Nissan Silvia
  • Car Model
    1990 sileighty
  1. s13 oil pressure problem

    Alright so did an oil change, checked my gauges (one of the plugs was almost falling out), and checked and cleaned the oil sensor. Now oil pressure is sweet sitting at around 15psi on idle. On another note, this car is tuned to 15psi boost, at what rpm should the car reach full boost?
  2. s13 oil pressure problem

    Ok cool, well then I'm gonna do an oil chamge and then test the pressure with a mechanical gauge. Touch wood it's either thin oil or slightly innacurate gauge! Thanks for all the input guys, I'll let you know what the outcome is.
  3. s13 oil pressure problem

    Don't believe everything you hear. Found previous adverts for my car and apparently it had a rebuilt forged bottom end. Inspected it all when I had the head off and found it was all standard. On another note the misses bought her car after being told her engine had been rebuilt. Recently started having problems with it and got it inspected and the mechanic laughed at the idea it had been rebuilt and said there isn't any sign at all of it ever being dismantled. Unless you can verify statements don't take them for a grain of salt. Good point, I should have probably had a mechanic look at it. Even so though, if the car has only done 91,000 ks, wouldn't it be unlikely that can bearings or the oil pump would be failing at this stage? Oil pressure isn't related to "cam bearings". The oil pump is driven by the crank, which then feeds oil through the crank and then through the main and big-end bearings. If the oil pump is f**ked, then you'll have no pressure, and if the big ends or mains have moved or been squashed, then you'll see a drop in oil pressure as well. On a soon-to-be-dead motor, going from 60psi cold to 5 psi warm isn't uncommon. You could have a shit gauge but it could be on its last legs. And with kilometers/age, I've had 21 or so 90's Nissans pass through my hands. I have seen ONE car with 90k km's that I believed. It was a treasure ship of rare parts. It did get written off a week later though. I've had one car with 140,000km on it where the interior was fresh, gloss black, and all the buttons clicked like new. That's 1/21 cars. I've probably had 10 S13's with "140,000km" on the cluster, all of them with trashed carpet, the white markings are worn off buttons, faded indicator/wiper stalks, dash cracks, etc. but if the car genuinely has 90,000km on it, and the oil pressure isn't actually a problem, make sure the timing belt has been done. Even if it hasn't done the km's, a 25 year old timing belt isn't a good thing to rely on. ok cool, that's good to know, I'll definitely check into it more thoroughly next time. So are you saying if it is a bearings problem then oil pressure will drop under revs or when engine is idling? Because mine seems solid when I'm driving, sits at 60psi at 3.5k revs or so. Only when idling it drops to 5 psi or even less.....
  4. s13 oil pressure problem

    Sweet cheers that's awesome will use
  5. s13 oil pressure problem

    Damn, he said apparently it was sitting in a warehouse for years before it was imported. I didn't know winding back odometers was common or easy to do, is there any way to check?
  6. s13 oil pressure problem

    Don't believe everything you hear. Found previous adverts for my car and apparently it had a rebuilt forged bottom end. Inspected it all when I had the head off and found it was all standard. On another note the misses bought her car after being told her engine had been rebuilt. Recently started having problems with it and got it inspected and the mechanic laughed at the idea it had been rebuilt and said there isn't any sign at all of it ever being dismantled. Unless you can verify statements don't take them for a grain of salt. Good point, I should have probably had a mechanic look at it. Even so though, if the car has only done 91,000 ks, wouldn't it be unlikely that can bearings or the oil pump would be failing at this stage?
  7. s13 oil pressure problem

    I'm not sure what oil is in it unfortunately. Would you recommend changing it and seeing how it runs then? Also the gauges seem to be wired a bit roughly and sometimes cut out....not sure if that would effect the reading. It's just weird how pressure is at like 50psi when cold idling and then drops to almost nothing once it's warm
  8. Hey guys, I recently bought an s13 that has the ca180det engine and only 91,000ks. I just noticed though that when the engine has warmed up fully after some time driving, idle oil pressure is very low around 5 psi and warning light comes on. I'm pretty worried because I know this can be due to cam bearings. Could it possibly be that it has the wrong oil in it or that the gauge is faulty? According to the guy I bought the car off the engine was rebuilt about a year ago so I though bearings should be sweet. Thanks
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