Biggest Nissan throttle body?
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Originally posted by "JayZ31T"
Vehicles with stock intake plenums, I agree with your opinion. But, If someone were to custom fabricate a plenum and size the intake tract equal to take advantage of the increased flow. Horsepower would be gained.
Vehicles with stock intake plenums, I agree with your opinion. But, If someone were to custom fabricate a plenum and size the intake tract equal to take advantage of the increased flow. Horsepower would be gained.
Example, Only so much air can flow through a 2 inch tube. Increase the capacity. Increase the horsepower.
Also, Why do Mustang owners go to bigger throttle bodies, air flow meters, and more fuel? More horsepower?
Seriously though, on a NA application, you can use a larger TB (remember, you don't have anything shoving air in, so the motor needs all the help it can get), but on a turbo car, you have help shoving air in, so it doesn't need any help. But also remember that many people with NA motors put way too big of a TB on their motors too. For an anicdote, my friend has a 12 second chevy with a 650 dp carb. We put a 750 dp carb on it, and didn't pick up any ET at all. Because the motor didn't need it.
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Some damn guy
Joined: Jun 2002
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We are playing the... I don't want to let the other guy get the last word in game. Let me make my point again, through another way. Mainly the length of intake runners. Short runners provide better air flow in low end torque. Long runners provide better air flow at top end power. Hence why OEM's now create variable length runner designs into their plenums. A more well rounded engine. There is other factors as well. Cams, Bore, Stroke, etc. My point is the bigger the intake system (Piping, Throttle Body, A/F Meter, Plenum) in diameter within reason. The better the top end flow. Resulting in more top end horsepower, but yet sacrifices low end torque. You only use low end torque to get going. Horsepower equals torque applied over time and distance. I would rather have more top end horsepower, but that's my opinion.
Let me make my point again, through another way. Mainly the length of intake runners. Short runners provide better air flow in low end torque. Long runners provide better air flow at top end power. Hence why OEM's now create variable length runner designs into their plenums. A more well rounded engine. There is other factors as well. Cams, Bore, Stroke, etc. My point is the bigger the intake system (Piping, Throttle Body, A/F Meter, Plenum) in diameter within reason. The better the top end flow. Resulting in more top end horsepower, but yet sacrifices low end torque. You only use low end torque to get going. Horsepower equals torque applied over time and distance. I would rather have more top end horsepower, but that's my opinion.
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1986 Z31T - Work not in progress
1992 B13 - Parts Car - For Sale
2003 Classic Red Protege5 5MT - Daily driver
1986 Z31T - Work not in progress
1992 B13 - Parts Car - For Sale
2003 Classic Red Protege5 5MT - Daily driver
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Originally posted by "JayZ31T"
We are playing the... I don't want to let the other guy get the last word in game.
We are playing the... I don't want to let the other guy get the last word in game.
Let me make my point again, through another way. Mainly the length of intake runners. Short runners provide better air flow in low end torque. Long runners provide better air flow at top end power. Hence why OEM's now create variable length runner designs into their plenums. A more well rounded engine. There is other factors as well. Cams, Bore, Stroke, etc. My point is the bigger the intake system (Piping, Throttle Body, A/F Meter, Plenum) in diameter within reason. The better the top end flow. Resulting in more top end horsepower, but yet sacrifices low end torque. You only use low end torque to get going. Horsepower equals torque applied over time and distance. I would rather have more top end horsepower, but that's my opinion.
I hope I'm not coming off as some internet asshole, I've just seen this ALOT with the turbo 2.3's and turbo Dodge's, and it never gains HP.
I'll be at Streetheat tomorrow in a silver 93 mustang hatch with black wheels if you wanna chat.
Take Care
Dave
Thread Starter
Some damn guy
Joined: Jun 2002
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I love discussions like this. Your point is that changing a throttle body is not necessarily going to net you any hp gains. I agree with that. I was stating that you would need to change the whole intake system to get the gains. I know if I switch to a 60mm throttle body and the piping is still only 55mm. There would be no gains.
Your point is that changing a throttle body is not necessarily going to net you any hp gains. I agree with that. I was stating that you would need to change the whole intake system to get the gains. I know if I switch to a 60mm throttle body and the piping is still only 55mm. There would be no gains.
__________________
1986 Z31T - Work not in progress
1992 B13 - Parts Car - For Sale
2003 Classic Red Protege5 5MT - Daily driver
1986 Z31T - Work not in progress
1992 B13 - Parts Car - For Sale
2003 Classic Red Protege5 5MT - Daily driver
