Can It be done?
Im experienceing extreme low oil pressure on a freshly rebuilt b18c1.
(0 at idle fully warmed 40 max)

Do I need to plastiguage the rod bearings too, if all im haveing a problem with is low oil pressure?

The engine is quiet, runs good, and smooth, with the exception of my oil pressure problem


Heres what I have on the engine that have a effect on oil pressure-

Eagle Rods
Srp pistons
Crank balanced and Micropolished.
ARP main studs
ARP rod bolts
ARP head studs.
New Acura oilpump
ACL bearings

Heres what I have done to "Diagnose" Where my Problem is.

Replaced Pickup Gasket= No change
Replaced engine oil with thick thick oil to see if i could get a change = No change
Replaced New Acura oil pump with old Known good pump = No change
Replaced Engine Oil Filter = No change.

Im stumped. Heres one thing I dont quite understand. My guage is hooked up right over there by the oil pump, If the bearings were the cause of the low pressure, but there are futher down the line, since my guage is right there wouldnt it read what the pump is putting out, or does everything have to all be sealed, or within spec to build that pressure?

All I know to do is check these bearings. Also, Where do the oil gallaries run in the block?

 

Have you primed the oil system before you started the engine up? Could be air in the system.

 

Ive ran the engine for about an several hours.

This went on before i even had a guage on it. The light started off by flickering, so i bought the guage to eliminate an electrical problem.
It since then has turned in to a big ordeal..

I put the other known good pump on today and before i put it on i filled the hole with oil the best i could.

Other than that, Is there a particular priming procedure?

 

priming it is no difference from priming the fuel system. just unplug the ecu backup fuse in the hood fuse box.

Two other things I can think of that can be the culprit for the low pressure reading is a faulty engine oil pressure switch or clogged oil pickup screen.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sleeperciv &raquo;</TD></TR><TR><TD CLASS="quote">priming it is no difference from priming the fuel system. just unplug the ecu backup fuse in the hood fuse box.

Two other things I can think of that can be the culprit for the low pressure reading is a faulty engine oil pressure switch or clogged oil pickup screen.</TD></TR></TABLE>


Ive had the engine apart 2 times. I replaced the pump today with a known good one.

Screen is clean.
The oil pressure reading switch?

If your thinking the switch im thinking of, I removed that and put my guage on in its place.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecluder97 &raquo;</TD></TR><TR><TD CLASS="quote">


Ive had the engine apart 2 times. I replaced the pump today with a known good one.

Screen is clean.
The oil pressure reading switch?

If your thinking the switch im thinking of, I removed that and put my guage on in its place.</TD></TR></TABLE>

I just hope your gauge isn't faulty either. BTW yes you can plastigauge the engine if it is still in the car. Also why didn't you checked this(all the bearings) before you installed the engine? Just wondering.

Last there's so many possiblity without knowing for sure until you have the bearings clearence specs in hand. The bearings could be too loose on the factory specs, etc....

 

yea should have checked the clearences before putting it togather. (especially important with aftermarket internals)

if you had the crank ground did you get the oversize bearings for it?

if it were me, i would take the engine back out and see what you can find and check all the clearences. or else you run the risk of wasting alot of the money you just put into this engine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sleeperciv &raquo;</TD></TR><TR><TD CLASS="quote">

I just hope your gauge isn't faulty either. BTW yes you can plastigauge the engine if it is still in the car. Also why didn't you checked this(all the bearings) before you installed the engine? Just wondering.

Last there's so many possiblity without knowing for sure until you have the bearings clearence specs in hand. The bearings could be too loose on the factory specs, etc....</TD></TR></TABLE>

True. Heres the deal with that.

ACL bearings are just the standard replacement size. I was under the assumption that the crank hadnt been cut or anything. they told me they micropolished it.

Under that assumption, that they only micropolished it, I didnt bother to check since the clearance was good origionally, i just replaced with the STD bearing.

The crank could have been cut on accident by the shop, or something of that nature to cause this.

So now I have to bite the bullet and check it. Ive eliminated everything however.

Does anyone know about the oil galaries? Someone in a prior thread said one could be clogged, but the head is getting oil. With that said, can I eliminate that?