Cheers for the comment! Yeah the old 18r is a rattly little sucker but Dave has a trick up his sleeve to sort mine out. I’m not a contemporary source of info but I’m sure they weren’t too bad back in their day. Could be worse, could have been a star-fire…
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.
Yeah I agree with you entirely. The 18R is a better all-round engine. However the 18rg is a beautiful looking motor and really helped to set Toyota in motion with continuing to co-design engines with Yamaha, which eventually led to the best engines ever made(in my opinion) such as the 4age and 2jz.
Doing an exceptionally good job with this channel mate, my absolute favorite channel since I discovered it about 2 months ago
Thanks for the comment! I’ll have to keep making vids on a more regular basis
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.
Cheers for the comment! Yeah the old 18r is a rattly little sucker but Dave has a trick up his sleeve to sort mine out. I’m not a contemporary source of info but I’m sure they weren’t too bad back in their day. Could be worse, could have been a star-fire…
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.
Yeah I agree with you entirely. The 18R is a better all-round engine. However the 18rg is a beautiful looking motor and really helped to set Toyota in motion with continuing to co-design engines with Yamaha, which eventually led to the best engines ever made(in my opinion) such as the 4age and 2jz.