Where does the extra HP come from?
CL Folding Freak
Joined: Jan 2006
Posts: 519
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From: Wa
Originally Posted by kingkong5
roundhouse kicks are good for at least 20 hp/liter
This argument is actually comparing apples to oranges.
Driver
Joined: Jan 2006
Posts: 114
Likes: 0
From: GA
Originally Posted by xravexboix
Having both direct AND port injection doesn't guarantee more power. It only helps alleviate worries regarding running lean. Running rich would increase the power, but the amount that you're saying (about 6hp/liter) is unlikely to be achieved... plus Toyota wouldn't run something rich to just boost power ratings =P (or at least it's assumed haha).
Having a lower compression ratio obviously wouldn't add power... but the addition of port injection would have leaned toward utilizing a higher CR since fuel distribution wouldn't be an issue.
It must all be in the valve timing. Since it can be manipulated, it can be altered to add or reduce power and a minute difference of 6hp/L would be possible.
But let's just be happy it's rated at 306 peak hp in the US and not 286 like it "should've" been. =P
Having a lower compression ratio obviously wouldn't add power... but the addition of port injection would have leaned toward utilizing a higher CR since fuel distribution wouldn't be an issue.
It must all be in the valve timing. Since it can be manipulated, it can be altered to add or reduce power and a minute difference of 6hp/L would be possible.
But let's just be happy it's rated at 306 peak hp in the US and not 286 like it "should've" been. =P
Actually the engine should be rated at 314 HP had it not been for the new SAE standards. See the below article for an in depth discussion of the 2GR-FSE (If you look at the charts comparing the DI with the combined DI and PI you will see the hybrid injection sees a 7% gain which, oh by the way, equals our magical horsepower difference):
http://www.sae.org/automag/techbrief...1-114-1-17.pdf
Last edited by Scotty99; Mar 30, 2006 at 06:01 PM.
Driver
Joined: Dec 2005
Posts: 177
Likes: 0
From: Oregon
Originally Posted by xravexboix
Having both direct AND port injection doesn't guarantee more power. It only helps alleviate worries regarding running lean. Running rich would increase the power, but the amount that you're saying (about 6hp/liter) is unlikely to be achieved... plus Toyota wouldn't run something rich to just boost power ratings =P (or at least it's assumed haha).
Having a lower compression ratio obviously wouldn't add power... but the addition of port injection would have leaned toward utilizing a higher CR since fuel distribution wouldn't be an issue.
It must all be in the valve timing. Since it can be manipulated, it can be altered to add or reduce power and a minute difference of 6hp/L would be possible.
But let's just be happy it's rated at 306 peak hp in the US and not 286 like it "should've" been. =P
Having a lower compression ratio obviously wouldn't add power... but the addition of port injection would have leaned toward utilizing a higher CR since fuel distribution wouldn't be an issue.
It must all be in the valve timing. Since it can be manipulated, it can be altered to add or reduce power and a minute difference of 6hp/L would be possible.
But let's just be happy it's rated at 306 peak hp in the US and not 286 like it "should've" been. =P
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