For the love of a tractor engine: The life and times of the 18R-G

[RT104GT]

Ok, please dont let this topic go waywards!!

Now... refering back to the pictures above of the 88210 manifold + carbies vs the 88250 manifold + carbies - you can see that the 88210 manifold is substantially longer, and thus places the carbies further outwards. This to me tends to suggest that this early model was used in a car that didnt have the same brake booster and master cylinder setup as the RA25-RA35 celicas, since on these models the carbies are VERY close to the master cylinder.

I also have some pictures of River's intake manifold on his 88230 18R-G in the RA25, and this engine has a similar manifold to the 88210, but it is shorter like the later 88250 manifold.

The major diferences in these 18R-G vs 18R-GU manifolds is the balance chamber design and the water jacketing.

The 88210 and 88230 manifolds (18R-G) have what is quite literally a metal pipe acting as a manifold balancing chamber, with a couple of fittings coming off it for various ancillaries, and is attached to the manifold by rubber hoses. You can see where the outlets are on the pics above - they are the largish (my guess - 5/8") outlets on the carby side of the manifold, in between no.1&2 runners and between no.3&4 runners.
Also note on the 88210 manifold that there is engine coolant present in the areas between 1&2 and 3&4 runners! You can see where the coolant comes from on the mounting flange to the head, and the rubber line (going off to the right in pics above) which is attached to fittings on the underside of the manifold. I can only guess what the purpose of this was....

On the 88250 manifold pictured above, you can see the balance chamber is a nice cast item that is bolted to the manifold via a couple of mounting flange faces where 5/8" ports were before. There is also no engine coolant present in the manifold, unlike the earlier versions.

I am yet to disassemble and compare the differences in the two types of solex carburettors pictured above, but i will get to this one day soon.

Would you like photos I have every inlet manifold including the one from my 88210 head which was rendered useless due to the cracks.

Lets get one thing straight about the 210 heads from someone who drove one hard from acquisition at 52000 KM to replacement at 100,000k.

1/. Pinging even on super with mechanical distributor part number ending in 88210
2/. 12 MM fine thread tapped holes in BLOCK and long skinny 12mm head bolts.
3/. 9.7:1 compression means unless shim gaskets were tightened exactly as per the Japanese translation I has in 1976 they gasket eventually leaked.

without any assistance from AMI I visited Vila Motors in New Hebrides and bought in five head gaskets and a vrs gasket set, and a shim set (aka pads)
and back in OZ in 1980 made the last attempt to fix my head by drilling out the head bolt holes to 15MM and tapping the block with 14mm medium thread.

We re ringed the motor and during the process we dropped one of the pistons and broke a skirt.

A journey to Sydney to Bankstown we found an 18RG disassembled engine and fitted that to the GT

The old engine has just resurfaced having been fitted into Peter Hurreys celica LT2000 liftback for the 1978 TREPCO around Australia.
Lost track of the car when he died and it has resurfaced fitted in a Toyota Lite STut FWD
So today I rolled the vehicle on its side at the wreckers and tomorrow hope to remove the engine and disconnect it from the four wheel drive gearbox and bring it home

So hopefully after I pull the engine apart I can take some photos and document the rebuild.

So as I said at the beginning I you want pictures of a genuine 1973 manufactured TOYOTA 18RG no Yamaha I can oblige. FWIW..

if you want 88210 heads I can source in Fukuoka Japan where we have found several CORONA (1976) and CELICA GT (earlier) wrecks.

But we will have to buy the whole car and wreck it which I can do when I am in Miyazaki again shortly.


http://wasabicars.com/profile/116-corona-2000-gt.jpg

This 1976 Corona GT has a 18RGU with no airbox and as you can see inlet manifold very short.
I also noticed that it had the igniiter and an electronic sensor dizzy which means the advance retard had been modified and the anti pollution changes had started to occur.

I have the microfiche of the parts and can give you every manifold part number ever used on the 18RG but it will take time as the fiche machine has a crappy lkamp in it and it takes ages to find the right page.
This machine was given to me by Steve Baird and is the Original fiche machine used by Stawell Toyota in the 1970s.


http://wasabicars.com/car.html?view=116-corona-2000-gt#


The 1973 manifold had a balance tube between the ports which was BOLTED in place by found 12mm bolts and had water circulating through it.
The manifold we got from Sydney had a skeleton design you could see thought the gaps and the balance tube was rubber hose.

I suspect the longer throw manifolds were for Celica as I only ever saw those in the 1980s at API International when al the 18RGs flooded into the country.

A long throw manifold would not fit in a Corona as you can see by the pictures there is barely room for the airbox cover as it would foul the brake booster.

Remember also there were two engines before the GU
they were 18RGR and 18RG like in Rivers Celica and my original engine.

I have a picture from my 1973 handbook


I might ad if I rebuild the engine it will only be for true to type and originality.

[RT104GT]

This has been answered somewhere in this thread, but for the life of me, I'm still looking for it.

But the question is. What would cause the chain to be so tight and stretched when fitting cams on the 18rgeu.
I have it at TDC. No chain dampener fitted.
The chain sits nicely on the bottom gear... but once the cam gears are on, its all tight.

I suspect bottom tensioner has popped out
That happened to me and could not even fit the cam gears so I pulled the timing cove roff and found the problem
Had I tried to crank it over would have wrecked it you have a problem suggest go back to beginning its a PIA but its the only way to be sure...

[RT104GT]

Front sumped for celica GT no cross member and room for rack and pinion.
rear sumped Corona GT with cross member
QED

You have to change oil pumps celica is straight Corona has goose neck.

[RT104GT]

18RG has a horizontal baffle with cut out for the oil pump in a Corona GT

[o_man_ra23]

Actually Celica is mid sump. There is a front sump, but it is quite rare. Hi ace or something came with it.

[Slidin23]

Yeah mine is a factory 18r front sump. It came with the pick up and all!
I didn't actually get any oil starve like I did with the mid sump... Well to the point that the oil light would come on. Like would happen regularly with the mid sump..

[73GTV]

2TG front sump, 18RG middle sump is all that I'm saying. The proof is in your pictures and 18RG's did not come stock in any of the trucks that I'm aware of.
http://members.iinet.com.au/~stepho/

[Slidin23]

I never said my 18rg was a factory front sump engine. I sourced it off a guy on here. Pretty sure it's off an 18rc. I fitted it to my 18rg when I put rack and pinion in.

[73GTV]

I never said my 18rg was a factory front sump engine. I sourced it off a guy on here. Pretty sure it's off an 18rc. I fitted it to my 18rg when I put rack and pinion in.

A front sump 18RC, Let us see the pictures of your oil pan and I'll be humble after that..Modified pan I would believe, I have 90 percent of the Old parts manuals and the Microfiche from the Old cars and trucks and no where is there a stock from sump that fits a 18R series block that I can find. I have checked

[ra_28]

I'd love to get a copy of that 152E manual you have.

I'm 90% sure a RT104 corona is a front sump?

Alex

[73GTV]

I'd love to get a copy of that 152E manual you have.

I'm 90% sure a RT104 corona is a front sump?

Alex

Toysport sells that manual and I am still looking for a picture of that Oil sump and I have the corona Microfiche and that is a Mid sump.


The location of the Oil Pump is why the pan is designed the way it is, the picture below helps to make this point.

[matt RA 25]

Photos of the three sumps i have,

[crowncustom]

RT104 Corona runs the front sump.Celica and Hiace had mid and most Hilux's run rear.
Cheers Brett.

[73GTV]

Photos of the three sumps i have,

Thank you, Finally proof, The sump is more forward which still as a mid sump for the Oil Pump location however capacity is more forward or more rearward in design which means that the cross member has to match or you will have mounting problems when this sump is used and that you have to change the motor mounts to insure that you have the clearance. That I would have not seen the difference until it became time to mount it into a vehicle. Thanks, this proves that don't know it all. All ways more to learn.

[73GTV]

Somewhere I have the Oil pump with the extended inlet.