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Location:
Rocklea qld
Registered:
February 2003
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hilux oil pump into 18r engine???
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Mon, 06 September 2004 09:51
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Was wondering if people new which hilux engine to get the oil pump out of to use in a 18rgeu. Apparently there is a hilux one that can be used in a 18r and it pumps alot more volume of oil. does anyone know which one it is and if any mods need to be done for it. I wanted this since im planning a turbod 18rgeu and want a good flow of oil
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Location:
Gold Coast
Registered:
October 2002
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Re: hilux oil pump into 18r engine???
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Mon, 06 September 2004 10:25
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18r oil pumps are different to 18rg or is this a special one or something?
Daniel
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Location:
Rocklea qld
Registered:
February 2003
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Re: hilux oil pump into 18r engine???
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Mon, 06 September 2004 10:49
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Thechuckster has a hilux one in his 18rc engine and i was hoping i could use one in my 18rgeu..
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Location:
Gold Coast
Registered:
October 2002
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Re: hilux oil pump into 18r engine???
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Mon, 06 September 2004 10:55
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the 18r oil pump is shorterand runs off the distributer which runs off the pump shaft (thats what the little notch is for at the bottom of the dizzy)
so if the dizzy isnt in the rc = no oil pressure
the 18rg dizzy is in the timing case and therefor the oil pump is taller so it can drive off the pump shaft without connecting to the dizzy.
Daniel.
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Location:
Perth
Registered:
May 2003
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Re: hilux oil pump into 18r engine???
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Mon, 06 September 2004 11:32
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As far as I know 18Rs all used the same oil pump.
The 18RGs use the same pump housing with a little steel sandwich plate to increase the height of the gears that can be fitted inside the pump, and hence increase the volume of the pump.
The 18R pump will fit the 18RG and vice versa. The pump in the 18RG is driven off an extra shaft that REPLACES the distributor drive shaft. It isnt part of the oil pump. There is an aluminium blocking plate that covers the old distributor hole and locates the top of the 'extra' shaft.
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Location:
Brisbane
Registered:
February 2003
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Re: hilux oil pump into 18r engine???
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Mon, 06 September 2004 11:45
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... mike vine put the hilux oil pump in so i'm short on details folks...
they had to modify the oil pickup from the hilux unit (sorry: donor engine unknown) to suit the 18R sump).
pressure is set to about the same as factory (with suitable shims in the bypass valve spring), but it shifts higher volume per revolution.
maybe restrict turbo use to a unit that has inline restrictor in oil feed (like the T25) - and run small(ish) line from oil take-off point direct to the turbo.
all of this being an effort towards minimising oil-pressure drops in the main oil galleries during startup
cheers,
Charles.
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Location:
Canberra
Registered:
December 2002
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 02:21
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18r and 18r-g are different pumps. The 18r uses a high pressure low displacement pump and the 18r-g uses a low pressure high displacement pump. The oil pump housings are essentially the same except for the relief valve. The main difference is the height of the rotating thing on the inside i think this is called a geroto pump on the rg its taller there is a spacer plate to compensate in the housing for this.
Having said that you can use a 18r pump in a 18rg but i guess it will always be in the back of your mind "are my bearings in the head getting enough oil?".
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Location:
adelaide
Registered:
May 2002
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 04:58
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im not sure if this helps cos i dont know oil pumps well, but i was asking a similar question about 6 months ago...
and my tafe teacher at the time told me he fitted a modified crown oil pump to his 18rgeu to increase oil pressure/dispacement...
he said the oil pumps in 18RGs were pretty average.. which always gets me worried
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Location:
Western Victoria
Registered:
September 2004
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 05:16
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just to add more fuel to the fire, the K, T and R series pumps all have the same diameter gears, but all have different heights.
T series gears can adapted to K series, R to T, and a K can be added to an R to give it more displacement.. basically it's a "make your own oil pump sandwich". you will need to make spacer plates also, but old housings are ok for this.
Cya, Stewart
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Location:
Western Victoria
Registered:
September 2004
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 05:29
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early rolla is right on the numbers, except for capacity the pumps are identical just larger vane/gears in the GT pump so they used a shit metal insert about 20mm.
As for comments by the TAFE teacher about the pumps being average. I have an 18RG engined RT104GT original factory circa 1974. Oil pressure was always about 70 psi. I used to ring the crap out of this engine to 7000 rpm all the time up and down the Grampians, and at the Ararat and Camperdown Hill climbs. It was also used as the Service car in the 1976 Singpore Airlines Rally carrying half a Corolla spares contingency in the section from Perth to Sydney and again in the 1978 Repco. I broke a ring and did a top overhaul at 100,000 km. The engine was topped at 100,000 km and had rings fitted, it now has 242,000 km and the oil pressure is still 65 psi. The GT oil pump is original I still have a new spare ina box circa 1976 along with carbies and other gears/chains that I never used/needed. I think we changed the dummy oil shaft as the cast gear driving the dizzie looked a bit thin. The Toyota companies who did all this work are long gone but the car still starts and runs and is in storeage. We reshafted the carbies last year at Shaun Maloney's workshop in Carlton at 240,000 km.
The Modified OIL PUMP in the HIGH Ace is simply this.... The pick up pipe which bolts below the vane/pump assembly is direct and straight in the RA series Celica and has an elbow neck in the R series Corona because the latter had a subframe cross member, whereas the Celicas and T18's had struts and no cross member. So if you look at a Corona SUMP where there is a cross member the sump is shallow at the front and deep at the back so they goose necked the oil pick up pipe to go deep into the oil pan. In the Celica however (with the 18R) and T18 3TC, the Sump is just a trough so the oil pump pickup just can go straight down from the distributer deep into the oil. To convert one way or the other get hold of the down pipe input piece and gauze filter. So go to wreckers and ask them to show you a Celica Oil Pump and a Corona Oil pump, ALL WILL BE REVEALED. There are no mysteries in four stroke engines just experiences.
[Updated on: Tue, 07 September 2004 05:46]
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Location:
Adelaide
Registered:
June 2003
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 10:05
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RT104GT
With the way that the pickups are different between the celica and the corona, would the corona pick up be more "centered" in an 18R sump, less centered or not fit compared to the original celica pick up?
The reason that many 18rg oil pumps hae been regarded as being poor is due to the pick up tube being off center in the sump rather than the pump not being good enough.
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Location:
Western Victoria
Registered:
September 2004
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Re: hilux oil pump into 18r engine???
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Tue, 07 September 2004 10:43
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Gotta think about that? Its been a while like about 12 years since I drove the car and 1980 since I pulled an engine down. The sump on the Corona is unique and stepped deepest at rear near drain plug and shallow at front under journals 1 and 2. Celica is more deep at front and centre and slightly steeped at rear to handle the steering rack.
As I remember the direct (straight) oil pumps were the celica GT's. nd it was the Corona that was offset with mesh pickup in deep part (rear of pan) and offset goose neck heading towards the front/middle. Sump pan was alos baffled three ways, front side and up.
cant remember what celica pan was like.
Exloded views of the pans/sumps would assist and I think there are exploded view on the net. One place is here..
http://www.alldata.com/recalls/
data on all car makes in pdf format (costs though to browse).
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