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

[Norbie]

Don't try it on a turbo engine though!

[Steve M]

Hasn't Cliff Hansen done a 92.5mm bore blowing in 21 pounds?

[thechuckster]

i think cliff got the capacity with some clever selection of crank, rods and pistons?

update:
i was wrong - Fast Fours article, date/year unknown:
-16R Rods
-22RE dished (92.5mm) (resulting in 6.8:1 comp ratio)
-eccentric ground 18R crank to add 3.5mm stroke
total engine capacity lifted to 2.4 litres.

note: he is running a very efficient W2A intercooler and boost is a maximum of 21psi.

[The Witzl]

YUKKY!!!! How the hell could you drive something with such low compression??

[Mr DOHC]

keep it on boost

[The Witzl]

i'd prefer something with some compression thanks.... EWW!!

My 18R-GTE will end up around the 8-9:1 compression ratio, much better

[jeffro ra28]

Besides, what difference is it going to make if you take an extra half a millimetre out of the bore? There is well enough there to have a 93mm bore with a turbo.

I really do wonder how the hell he ground the crank to gain 3.5mm of stroke

If he had done it the conventional way of just offset grinding the crank he would have had to use +.320" bearings and ground the crank .180" below its original size.

[Joshstix]

I guess 16R rods have a smaller big end.

[Mr DOHC]

they dont, cause u r supposed to use 16R rods with 22r crank

16/18/20/21/22R big end bearings are all the same

[jeffro ra28]

Its a mystery then. Unless its a custom billet crank. which would have cost 5 g's. Or dramatically resized the 16r rods.

[Norbie]

Or the magazine article was completely wrong. It certainly wouldn't be the first time.

[Mr DOHC]

Or the magazine article was completely wrong.

dont be silly, that never happens

[Mr DOHC]

cliffs car DOES use the 22r/16r combo

[jeffro ra28]

Is there a way i can contact Cliff? Regarding RA28 matters. Please PM if so.

[Norbie]

Yeah, show up to a Toyota Car Club of Qld meeting.