Doing an exceptionally good job with this channel mate, my absolute favorite channel since I discovered it about 2 months ago

Outstanding content as usual. I have a love/hate relationship with 18Rs, and this episode has me looking at them a little more fondly again.

G'day from Brooksys channel!! :-)

I've driven the 18RG and the 8RB and the 18R, the 18RG is very much a "narrow RPM" engine. It really needs to be in it's RPM range in order to have any benefit over the SOHC version. It only had 2 valves per cyl vs modern DOHC engines with 4 valves per cyl... its kicks the torque up over 1200 RPM past where the 18R torque is. So the HP numbers are misleading because HP is a formula based on torque and RPM... So the 18R is far more responsive in the middle where most of the work is done for a street engine. If you were to race on a track and spend most of the time in a narrow band of the upper RPM range, the18RG is the way to go. I was surprised when my very modified 18R beat the 18RG until I realized that it doesn't have much for mid range torque. It is an impressive looking motor, but was never a great street performer. Just dumping the smog, adding a well tuned Weber carb and you can be in the same power range with better torque in the 18R. They should have made the 18RG DOHC with 4 valves per cyl and fast runner ports for a good street engine like the BEAMS.