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matt88 · 09-01-2021, 05:13 AM

As I'm new to understanding engines I'm trying to understand more what makes an engine an engine, particularly in the Toyota 2GR/1GR world.

Here in Australia there is an abundance of 1GR and 2GR engines. 1GR in the torque focussed, lower RPM versions for things like landcruiser, Prado FJ Cruiser etc.

Then there is the 2GR in things like the camry, lexus, even the supercharged version in the Lotus family. Problem with this one is not many examples here with longitudinal, rear wheel drive config transmissions. Sure, plenty of camry's around so engine is solved, but not many trans around...

So considering there is an absolute butt load of the 1GR around and that they have the longitudinal setup, both automatics and manuals aplenty, what arguments could be made for not using one in an 86/BRZ swap? Sure, I understand they are more torque focussed, perhaps the layout of the transmissions are more focussed towards transfer case designs for 4wd applications so this may give trans tunnel problems, however if you could get around the transmission issue, would it be too much work in making a 1GR behave in more of a higher redline, power focussed thing instead of a lower revving, torque focussed thing? 4 litres of displacement and getting redline to say 7000 - 8000 RPM and then better still hitting it with some boost might be a nice tasty result.

So what is inherent in these 1GR engine designs that make them more truck focussed and what would you need to alter to make them more rev happy, car focussed? Can I assume as simple as heads and cam? Are the blocks, cranks, rods, pistons etc largely similar and heads + cams is all it would take to totally transform its behaviour? Sure, let's assume for now that things like intake, exhaust, tune etc will all be done as well.

It would sure be nice to find an 'easy' way to get a landcruiser/FJ Cruiser/Hi lux/Prado 4 litre with matching trans on the cheap then throw say, 3 to 5K at it to dress it up with whatever is needed to transform it into a nice high revving thing.

Or am I totally missing something with this family of engines and there is no sense to dressing up a 1GR ?

09-01-2021, 05:13 AM	#1
matt88 Member Join Date: Oct 2019 Drives: 2017 Toyota 86 GTS Manual Location: Australia Posts: 33 Thanks: 4 Thanked 24 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Toyota 2GR & 1GR Engines: Truck/Torque/low redline Vs Car/Power/race/high redline As I'm new to understanding engines I'm trying to understand more what makes an engine an engine, particularly in the Toyota 2GR/1GR world. Here in Australia there is an abundance of 1GR and 2GR engines. 1GR in the torque focussed, lower RPM versions for things like landcruiser, Prado FJ Cruiser etc. Then there is the 2GR in things like the camry, lexus, even the supercharged version in the Lotus family. Problem with this one is not many examples here with longitudinal, rear wheel drive config transmissions. Sure, plenty of camry's around so engine is solved, but not many trans around... So considering there is an absolute butt load of the 1GR around and that they have the longitudinal setup, both automatics and manuals aplenty, what arguments could be made for not using one in an 86/BRZ swap? Sure, I understand they are more torque focussed, perhaps the layout of the transmissions are more focussed towards transfer case designs for 4wd applications so this may give trans tunnel problems, however if you could get around the transmission issue, would it be too much work in making a 1GR behave in more of a higher redline, power focussed thing instead of a lower revving, torque focussed thing? 4 litres of displacement and getting redline to say 7000 - 8000 RPM and then better still hitting it with some boost might be a nice tasty result. So what is inherent in these 1GR engine designs that make them more truck focussed and what would you need to alter to make them more rev happy, car focussed? Can I assume as simple as heads and cam? Are the blocks, cranks, rods, pistons etc largely similar and heads + cams is all it would take to totally transform its behaviour? Sure, let's assume for now that things like intake, exhaust, tune etc will all be done as well. It would sure be nice to find an 'easy' way to get a landcruiser/FJ Cruiser/Hi lux/Prado 4 litre with matching trans on the cheap then throw say, 3 to 5K at it to dress it up with whatever is needed to transform it into a nice high revving thing. Or am I totally missing something with this family of engines and there is no sense to dressing up a 1GR ?