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

[GT1978]

Is the accusump and off the shelf / aftermarket / high volume / baffled sump? or a modification / addition to the stock sump?

Glen

[Zammo]

accusump is a pressurised canister of oil the you rig up to a solenoid and presure sensor when oil pressure drops below a set level it injects its reserve into the system giving crucial miutes to safely shut the motor down



http://www.accusump.com/

[Steve M]

since TRD/HKS gear drives are non exsistant

I have a strong suspicion that the HKS 18R-G/2T-G stuff was/is made by Kameari Engine Works, who still offer 2TG gear drive kits for sale.
http://kameariusa.com/2TG_GearTrain.php


Toyhead Auto is the USA distributor for Kameari (Kameariusa.com)(toyheadauto.com)

Product list here: http://kameariusa.com/2TGproducts.php

and the next bit seems easy enough
make one of these

from one of these or similar
http://www.ebay.com/itm/ws/eBayISAPI...m=170852888617

You'd want to check that those Jag sprockets match the chain Standard used by Toyota.
ANSI has 9.35mm pitch, as does ISO/DIN/BS.
Problem is that the chain rollers are different sizes. ISO, which Toyota used has a roller width of 5.7mm and diameter of 6.35mm.
ANSI has narrower roller.

You could just go with one of these:
http://kameariusa.com/2TG_IdlerGear.php


This is a new product that looks like it might take care of a few timing chain related issues:
http://kameariusa.com/2TG_IdlerTensioner.php



I think that the two hole tensioner should mount to an 18RGEU head as I think the front cover plates are the same.

[Steve M]

18R-G gear drive kit tooth counts:

28T Crank Driven spur gear
40T Spur Gear Idler
56T Auxilliary Shaft Drive spur gear
24T Aux Sprocket (Standard part)
24T Camshaft Sprocket (Standard Part or aftermarket adjustable)

I counted these from a photo and they seem to calculate fine.
That means a 50% reduction from crank to aux shaft, which would be correct for driving the camshafts.
The dizzy drive gear combination must reduce the ratio by another 50% for spark.

[JadeEstevez]

We should get these made up in bulk =P I'd buy two sets, one for my 18RC and one for my 18RG!

[Taff]

Just wondering if the clearance issue i am having is normal.

18RG into a RA28. finally bought some K&N filters and went to fit them, they were much too thick so i bought the lower profile ones. turns out they interfere anyway with the booster. Wish i had noticed that first.

Is this solved with the thinner intake manifold? I have the manifold without the integrated balance tube - has coolant in it.

Thanks


05082012_004_.jpg

[o_man_ra23]

18rg aux shaft and cams rotate at the same rate. The crank takes two strokes for one rotation, and the cams take 4 strokes for one rotation, so 50% reduction is right.

[JadeEstevez]

@ Taff.

I've heard 18RG's have clearance issues in RA28's and that a solution is to use an early 18RG manifold thats 'lower profile'.

That's what I've heard though, I don't know how true it is.

[roadkill]

Hi,

thing is the factory 18rg had an air box the then had a hose that went up to the air filter that was semi bolted to the radiator. You shouldn't have any clearance issues though, i never did in any of my 28's. It's the earlier manifolds (88230) that are longer. Not sure on the 88210 as i've never had my greasy paws on one. But i should have a later one or two that is shorter that should fix this issue if you have an earlier model. Maybe throw up a pic of the inlet manifold if you're having trouble identifying it.

bEn

[roadkill]

Oh, and don't use those round ones. Use the square versions as they're shorter. Might get that little bit of room that you need

bEn

[RA35GT]

Either of these two manifolds should work as they have the same extension from the head.



I had RAMFLO filters on mine with no issue.

[roadkill]

Hi,

aren't ramflows notorious for randomly falling apart and being ingested by your engine?

bEn

[RA35GT]

*Shrugs*
My aunty had the car for like 10 years with em on. Don't recall her having any issue with them. (I imagine it's had a few new filters in that time though)

Only reason they aren't on anymore is I went EFI.

[Taff]

Yep mines an 88230. Will have to find a short manifold.

If anyone has a 88251 or 231 they want to part with shoot me a PM.

[roadkill]

Hi,

might have a spare one here. I'll check tonight if i get a chance.

bEn