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

[RAd28]

8.3 is turbo safe territory... won't be anything impressive in NA form... that said... it really depends on what your used to... for an L plater, i say sure, it's all you need... learn to drive before you go racing mates in skylines, i scared my self silly even with an 18RC... mind you, there was a good dose of down hill involved...

[o_man_ra23]

They gained more power out of the 18RGUE with the better head and injection over the higher compression and better cams of the 18RGU... so you tell me how poo the lower compression is?? Of course, early cams and early pistons combined with injection and 270 head will yield decent results.

[Steve M]

They didn't get that much more from the 18RGEU, only about 5 horsepowers wasn't it?
I'd attribute that to the EFI and cam timing as the valve sizes, springs and port design is pretty much the same between the 88253 and 88270 heads.
The cam timing it quite different between the 8.3 and 8.7 engines, and the EFI versions didn't have to run all that tagged on emmissions stuff.
The 18RGEU also had lighter rods, not sure how much difference that makes though.

[o_man_ra23]

5hp is still reasonable gains considering they dropped compression and emission levels... imagine if they didnt drop compression??

[RAd28]

steve M... you mentoin they changed cam timing a fair amount, is it possible this was to assist higher combustion pressures? i.e. lower static compression but the difference is made up with timing?

[TheToyman75]

oman when i was building such an engine i went for a sard single spray low impedence 720cc top feed injectors sard, there was a catalogue page posted up some time ago.

i dont think 7mgte 440cc inject's will be appropriate as they are not of a single spray pattern as that engine is multivalve, in the rg these will just spray the walls around the valve

SillyCarS,

Its good to see someone else on here has a good understanding of how important injector flow patterns can be. Anything twin spray will cause wetting of the port walls causing all sorts of poor drivability issues - not to mention emissions concerns for anyone wanting to pass an emission test for engineering.

[The Witzl]

SillyCarS,

Its good to see someone else on here has a good understanding of how important injector flow patterns can be. Anything twin spray will cause wetting of the port walls causing all sorts of poor drivability issues - not to mention emissions concerns for anyone wanting to pass an emission test for engineering.

I've brought this up in the 18R-GTE reference manual thread too. It's a very valid point to make!

[SillyCarS]

its true i have plagiarised teh witzle's work +rep to him

[hosking1991]

http://cgi.ebay.com.au/Toyota-18RGU-...QQcmdZViewItem

[RAd28]

and it acctually LOOKS like it's got come potential... instead of some that have showed up "fully worked" with 40mm solex's etc etc

[airfireman1]

Looks like its up for sale again,I found this add about 12 months ago and posted into the 18rgte reference manual
http://www.toymods.net/forums/showth...ghlight=18rgte
Same price too
Well spotted but It is a limited market unless you have just won lotto

[ra_28]

I would love to get hold of those TRD gear sets for the timing.

Cheers
Alex

[RAd28]

yeah... would be nice to know if that motor has any real history...

EDIT: never mind... it says "NEVER RACED"

[ra_28]

One would think if you have spent that much money on an engine you would have used it.

[LTJET]

Hi guys, what brand/company would you suggest for forged pistons and other performance parts for an 18rgeu/18rgu? Any help/suggestionr/personal opinion
is appreciated.