tried the search, no results, anyone know of a thread i can use for reference when i change my oil pump?
also maybe the best oil pumps for the engine?

any help kicks A$$

Why are you replacing the oil pump?

there's no oil pressure......not sure if it will need a new pump yet, i still have to do some tests, but i'd like the info to be handy if that's what i need.

nothing's reading on the dipstick, and all the gauges read 0 even after i put oil in it

Have you tried a mechanical gauge to verify the pressure? Also make sure the front pully bolt is tight becasue the pully hods the pump gear tight to the crankshaft,

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Signature courtesy of MinnGreen.

the thing is that both of my gauges are down, all others are fine. when i started it (very briefly) and found out my pressure was gone i could hear it aswell. i know for a fact the pressure is gone, i'm just wondering if it's the pump, or perhaps the hose inside the pan may have fallen off?

quote Originally posted by Fiero STS: Also make sure the front pully bolt is tight becasue the pully hods the pump gear tight to the crankshaft,

exactly.

The oil pump is driven by friction - if the bolt on the crank pulley/damper is loose, the crank can just spin and the pump won't do anything. IIRC it needs to be tightened to some huge number - like 300 ft-lb. I don't think my 1/2" torque wrench goes that high, so I think they made a change to a lower number plus an angle. This is where a factory service manual will help

[This message has been edited by ryan.hess (edited 05-01-2007).]

hmm yes that manual would help....thanks for the help i'll check that out....when i find a manual

I looked it up and it's 44 ft-lbs + 120 more degrees.

I would probably start there if you're 100% sure it's not getting oil pressure. Loosen the bolt then tighten it back up.

right on, thanks again!

if it is loose, do not try to tighten it to those specs. you may end up breaking it off. thats a torque to yield bolt. meaning you are tightening that bolt until it stretches to the point that it will not return to its normal state once backed off. if you try and tighten it to those specs you may break it off and you wont have it as tight as a new bolt would be because it will stretch more easily this time around

The harmonic balancer bolt is not TTY.

LITEDAZE,

is this a motor that you have run before with good oil pressure? There is a section in my manual that deals with no oil pressure after putting an engine back together as I guess it has been a problem on the N*. I used an unconventional method when my Aurora motor would not pressurize. I put a hose in the hole that comes from the oil pickup in the pan and sucked the oil up using vacuum. Then I put the oil filter adaptor back on as quick as I could and spun the motor. The oil pressure came up after that.

yeah it ran great...a bit of a vacuum issue that plays with the idle though but that will be dealt with.....i didn't have much time to run miles on it because i got the car back near september, but everything was good until one day when i started it and noticed the gauges and the sound of the engine. my dad is telling me the pickup hose may have disconnected below the oil pump, so i am told i should overfill the oil(just for testing purposes) to see if it will read on the dip.

and if a bolt has to be tightened i don't wanna snap it and cause a bigger problem....but i know that without pressure it's only gonna look good in my driveway, and it's getting really nice out

[This message has been edited by LITEDAZE (edited 05-02-2007).]

quote Originally posted by LITEDAZE: nothing's reading on the dipstick, and all the gauges read 0 even after i put oil in it

Do you still not get anything on the dipstick?

FYI, a complete fill is SEVEN quarts.

i haven't filled it yet since, i need my pay to come in so i can buy all that oil, a drain pan, an oil filter, a floor jack and some ramps..... and some other stuff for the engine while i'm at it....the plan is to get under it this friday.

[This message has been edited by LITEDAZE (edited 05-02-2007).]

quote Originally posted by ryan.hess: The harmonic balancer bolt is not TTY.

the torque spec sure sounds like it. if it werent, id expect it to be a set number of ft lbs. generally when you have to turn xx degrees, they are tty

No, they're not.

so does everyone agree that it isn't TTY? lol

It is not a TTY bolt the torque plus xx degrees is alot more accurate method of tightening a bolt

10/4

Torque + angle is, as STS said, a more accurate way of putting a given strain on a bolt than just torque by itself.

TTY means that the applied strain is beyond the bolt's elastic limit; it's permanently stretched and can't be reused. TTY would not be possible without T+A (get your minds out of the gutter ).

T+A: 15 ftlbs + 60 degrees (short bolt)
T+A: 15 ftlbs + 90 degrees (longer bolt)
TTY: 15 ftlbs + 120 degrees (short bolt)

There are a few exceptions... for instance head bolts get tightened 15 ftlbs + 180, but they're long bolts and they're compressing a head gasket as well.

we overfilled the oil to see if the oil pressure might come back, (meaning the pump still works but the pickup is missing) and the pressure came back to normal. now that we've pinpointed the problem, we need to access it. can someone help us locate the oil pickup hose?

Drain the oil & drop the oil pan. The pick-up tube is near the "front" end of the engine ... opposite end from the transmission-end.

This thread has encouraged me to add some Loctite (R) to my pick-up tube bolt before I button up the bottom end.

[This message has been edited by WAWUZAT (edited 05-24-2007).]

so in order to drop the bottom section of the pan, what all has to come down first?

@$$uming that you've mounted yours like I mounted mine, pretty much just drop the front back exhaust cross-under.

On my install, I might have to lift the front (pulley end) of the engine a bit to get to the front pan bolts, but it should come off once that's done.

is your exhaust set up similar or the same as PBJ's setup?

before you go through the trouble to drop the pan, drain the oil and refill with the normal 7quarts and try it again just to make sure that pickup tube really did drop down. If you are able to keep the oil that you have in it now clean then you should be able to reuse it just for this test. If it still holds oil pressure then you can change the oil and filter. If it does not then you did not loose anything but a little time.

i did originally just put 7 quarts in to check, and i had to put in quite a bit more to have oil pressure....wouldn't i just be doing the same test that way?

quote Originally posted by LITEDAZE: i did originally just put 7 quarts in to check, and i had to put in quite a bit more to have oil pressure....wouldn't i just be doing the same test that way?

If it did not take special procedures to get oil pressure in the first place I would say "yes". Since getting oil pressure can be an issue in some cases you could just confirm that it was not something else causing your loss of pressure. I do believe that there is a strong possibility that your pickup tube is loose but it seems like a lot of work to see it visually if for some reason the the engine was low on oil and the pump started pumping foam or air instead of oil and the tube is ok.

Now that you have been able to get the pressure back using more oil you may be ok. I would run the engine again with the excess oil just long enough to verify pressure and then quickly drain and refill the original 7 quarts to see if the engine could still maintain oil pressure.

I turned my engine over quite a lot before "sucking" the oil up through the pump to prime it. It would not prime itself without help. This engine had not been taken apart, it just did not have oil in it for an extended period of time.

[This message has been edited by cptsnoopy (edited 05-24-2007).]

i think at this point, the best thing to do would be to guarantee that my oil pressure will be maintained....if it was for sure, trust me, i'd love to try it that way....i think i'm better off seeing that pickup though.

There is nothing wrong with being sure that you know what is going on in there. Just a lot of work. Good luck with it.

edit: forgot a word

[This message has been edited by cptsnoopy (edited 05-25-2007).]

thanx...trust me i'm not looking forward to it!