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Location:
Melbourne
Registered:
November 2003
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 SOS SOS No oil pressure in my new engine!!!!!
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Mon, 10 May 2004 13:47
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I've just installed an 18RG into my RA23, After the first startup, i noticed that the oil guage isn't reading. I pulled off the oil filter and to my horror is completeley enpty. Clean as a whistle. This engine is not pumping oil.
What do i do guy's? Is there something i can do externally?
I just want to fix this for shure without trial and error as the engine is in excelent good condition. I hope!
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Mon, 10 May 2004 17:17
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what assembly lube was used, how long was it run, and at what rpm?
i don't know what an 18rg oil pump & system is like, but from you description so far, i think this one is near dead and well past the time when oil will help it.
i think that inspecting the rods & mains is a must, even if there is some simple explaination(i haven't a clue as to what) for no oil pres.
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Location:
sydney
Registered:
March 2003
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Location:
Canberra
Registered:
May 2002
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 07:17
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Check to see if you have drive from short shaft to oil pump!. After rebuilding an engine like the 18RG, or the 2TG, I pre oil the engine. Remove the oil pump/short shaft idler gear, and turn the oil pump over using a long screwdriver. Listen to all the air being expelled, as the oil fills all the oil galleries.
Initial engine turn over in car is conducted without ignition connected. This reduces load on bearings. Then when happy fire her up. Dont let the poor engine sit on idle for too long. If you have positive oil pressure(dont rely on idiot light) take it for a drive, and get some varying loads into the engine. Rough tune at this stage is OK. When you have a few K's up then you can let it idle while you tune it.
Hope this helps, regards Chuck.
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Location:
On your mum!
Registered:
May 2002
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 08:35
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Was the engine converted to 18RG from and 18R (C)? Maybe the cam oil hole plugs were removed and never replaced. However if this were the case, your oil pump would still have pumped some oil around the engine.
I am betting that Chuck is right, and that the drive form the dummy cam to the oil pump is AWOL.
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Location:
Brisbane
Registered:
October 2002
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 09:32
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do u have the right dizzy, if u have a certain 18RC one, then the dizzy doesnt reach the pump drive
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Location:
Rocklea qld
Registered:
February 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 09:37
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whats the difference in dizzies..i have a 18rg one in my 18rc so i thought they were the same.....and i dont recall the dizzy sliding into anything at the front...maybe i missed that part...
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Location:
Rocklea qld
Registered:
February 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 09:38
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whats the difference in dizzies..i have a 18rg one in my 18rc so i thought they were the same.....and i dont recall the dizzy sliding into anything at the front...maybe i missed that part...
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Location:
Perth
Registered:
May 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 10:45
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If the engine has just been rebuilt and hasnt been run yet, it isnt going to have any oil pressure.
You should fill the oil filter about half full of oil, and let it soak into the paper before refitting. With the spark plugs out turn the motor over on the starter until oil pressure comes up. You should really have a nice quality oil pressure gauge when doing this(see exact pressure), but the original one should suffice.
Once oil pressure is up, then refit spark plugs etc and start the engine. The rest is as Chuck said.
What ever you do, dont start and run the engine until you have got up oil pressure!!!!!!!!!!!!!
Worst case scenario, you will have to pull the plugs out and tow it round the block, in gear to get oil pressure up. This is a bit extreme.
An oil pump has to be pretty f%$^ed not to pump ANY oil.
Just as a bit of trivia, the cam bearing rotation doesnt affect the 18R like the 2T as the 18R is a single over head cam motor unlike the 2T where the cam is in the block.
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Location:
Perth
Registered:
May 2003
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Location:
Melbourne
Registered:
November 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 11:21
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I removed the carbs and the small plug with one 12mm bolt holding it. Cranked over the engine by hand and saw cogs turning in the hole. Does that mean it has been installed?
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Location:
Melbourne
Registered:
November 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Tue, 11 May 2004 11:22
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I removed the carbs and the small plug with one 12mm bolt holding it. Cranked over the engine by hand and saw cogs turning in the hole. Does that mean the dizzy replacement shaft has been fitted?
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Location:
Perth
Registered:
May 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Wed, 12 May 2004 06:24
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The top section of the oil pump drive shaft locates in the alloy piece that you have pulled out. If you see that shaft connected to a gear that engages with another gear on the lay shaft (the shaft running in front to rear direction of the vehicle) then yes the oil pump drive shaft must be there.
Is this a rebuilt engine or just a second hand one?
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Location:
Melbourne
Registered:
November 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Wed, 12 May 2004 14:07
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The engine was bought used but recently rebuilt. I sourced it from an engineering company who used it to power a Celica show car. It was rebuilt (With paperwork, reciepts etc) late 2001 The engine was sitting on an engine stand for 10 months before i got my hands on it. It was driven for about 1500k's and then replaced by a 450HP Supercharged 2J motor or something like that. The bloke i bought it from swears black and blue that the engine is in top shape and was pumping out healthy oil readings. Basically no problems. (So you hope)
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Location:
Melbourne
Registered:
November 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Wed, 12 May 2004 14:17
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Just another quick question.
Should there be anything behind the dizzy? When i pulled out the dizzy i noticed there was nothing for the dizzy to spin on down low. On the end of the dizzy, the shaft is tapered like a flathead screwdriver. Is it supposed to slot into anythjing? The gear to spin the dizzy is there and doing it's job but there is nothing to locate the bottom most flat head part of the shaft.
Is that the problem?
Am i missing engine componentry?
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Location:
Perth
Registered:
May 2003
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Re: SOS SOS No oil pressure in my new engine!!!!!
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Thu, 13 May 2004 03:36
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Since the engine has been sitting for so long, the oil would have drained nicely back to the sump. As was said earlier, pull the plugs out and wind it over till oil pressure comes up. Need a good battery for this as sometimes takes a while.
The dizzy has the slot bit for when it is fitted to the engine as an 18R. The 18R has the dizzy located in the engine block and the slot bit drives the oil pump.
In the 18RG the dizzy is located in the timing cover and the slot bit does nothing. Instead of the dizzy shaft providing drive to the oil pump, the other little shaft spoken about earlier takes over this job and the aluminium piece locates this shaft and fills the hole in the block. Obviously the dizzy cant fit in the original position in the block on the 18RG due to the intake manifold being in the way.
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