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

[o_man_ra23]

Stock 8.3:1, Stock 8.7:1 or Stock 9.7:1?? If you are unsure what I mean by that, look at the very first post in this thread.

Not running boost helps you to be able to run a thinner lid on the piston, though you still need to make sure the tune is good.

[Slidin23]

Stock 9.7:1

it will be run in and tuned on the dyno and sleeka spares (fours and more) here in adelaide

i remember my build saying rouighly 9.7:1

he said it would even be fine for boost he builds 1000hp 1jzs and even some turbo 18rgs for fours and more and is very good at building 18rgs and knows his stuff VERY well

[Slidin23]

or maybe it was 8.7:1 ill have to ring him and find out tomorrow for sure....

[o_man_ra23]

Would that be Dave Wong?? Nice bloke from the dealings I have had with him.

[Slidin23]

its his dyno but brenton from fours and more does the tuning another guy that knows his shit

yeah im pretty good mates with dave very nice guy... go drifting at mallala with him and his missus...

[Slidin23]

he is also getting timing chain tensioners for 18rg and 2tg very soon.....

[TRD184]

heya's, wondering what spark plug would be recommended for a standard 18R-G? can only find a listing for 18RGEU's on the computer at work, but i dont want to assume its the same for a carbouretted one.
thanks all
-James

[river]

Hi,

Is the engine an 18R-G, 18R-GR or 18R-GU?

I think the 18R-G and 18R-GR used the same plug.

These are carby versions.

seeyuzz
river

[o_man_ra23]

NGK all the way. From memory it is the BPR5EY, but check that for confirmation. If you have points ignition, I would be running a 0.8mm gap, but if you have electronic ignition, this could be pulled out to 1.0 or 1.1 if you have a decent coil to back it up.

[Roscos]

How common were the 18R-GR in this country and did many get in?

I had a 2T-GR in my 23 and it went like the clappers but the head was totally different to the basic 2T-G.
It had different size valves and the cams had a different grind. Were the 18R-GR similar?


Roscos

[TRD184]

Hi,

Is the engine an 18R-G, 18R-GR or 18R-GU?

I think the 18R-G and 18R-GR used the same plug.

These are carby versions.

seeyuzz
river

its an 18R-GU with a ***53 head for what its worth. never known what the U meant.


thanks O_man_23, NGK for sure. i know not to go with bosch, bin there once, never EVER again

[Roscos]

its an 18R-GU with a ***53 head for what its worth. never known what the U meant.

Pollution motor, did it come with all the pulleys off the the bottom of the motor.


Roscos

[TRD184]

its still in the car. is there a way of telling from the pulleys? theres no pollution gear on the engine. except for a charcoal canister that wasnt connected to anything, or is it more to do with tuning/cam?

[Roscos]

What carbys are you running, Solexs or Webers? Is it still running the original dissy or electronic?

Roscos

[TRD184]

engine is all standard aside form extractors as far as i know, its got the standard 40 solex's though, dizzy is points