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Discussion Starter · #1 ·
How Much Hp Does A Stock Civic Si Have ? 160hp?
 

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Discussion Starter · #3 ·
sorry

sorry but i dont know what the difference is becuase i dont' know shit about cars. overall like when someone asks how much hp does the si have what should u say?
 

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Ok...

The Si is rated at 160 hp at the flywheel. This means the engine produces 160 hp without having to push pull or turn anything.

WHP means Wheel Horse power. This is the actual amount of HP that gets to the wheels. HP is lost from the flywheel to the wheels. In a stock Si it is about 140 whp.

When your car comes from the factory the manufacturer usually only tells you the horsepower at the flywheel. So if someone asks you "how much hp does a stock Si have?" You would say "160"

After you add mods to your car, the only way to find out how much hp you have, is to have it dynoed. The number you get from the dyno is the wheel horse power.

I hope this cleared it up a little. If not ask again, and I will try to explain it differently.
 

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just a question

I know it might be LAME ,BUT HERE IT GOES mods i have aem cold intake,advanced tim.unorthodox pulleys full set (3)Dc header 4-2-1 well how much do u think i gained with this set up?I was thinking like 6 to 7 hp thanks for the comments.
 

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Re: just a question

always revin said:
I know it might be LAME ,BUT HERE IT GOES mods i have aem cold intake,advanced tim.unorthodox pulleys full set (3)Dc header 4-2-1 well how much do u think i gained with this set up?I was thinking like 6 to 7 hp thanks for the comments.
6 to 7 HP would be a reasonable assumption. Not all bolt-ons are going to have a positive effect thru 100% of the powerband. The only way to really know how your engine responds to any mod is to dyno tune it and the before and after results will be conclusive evidence.

The stock B16A engine is factory rated at 160HP. Flywheel horsepower that is. I have read numerous articles on tuning where they did a baseline dyno before doing any mods and more than once the stock engine was putting out roughly 147HP to the wheels. If you calculate the loss thru the drive train, usually about 15% for a manual transmission, that gives you almost 170 flywheel horsepower.

There has been a lot of speculation about this number and why Honda might have de-rated the engine. One possible reason is because of the GS-R at the time was only rated for 170HP. It doesn't look too good to have a 1.8L and a 1.6L engine pushing out the same amount of power. The GS-R vs. the Si/SiR has been argued till exhaustion here. In the end, on the track, they are both fairly equal cars, coming down to the driver.

Another drastic effect on the B16A is the outside air temperature. On really hot days the B16A has a noticeable power loss because of the inlet air temperature. Colder air is more dense and thus provides more power during combustion.
 

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Discussion Starter · #7 ·
thanx

thanx v00tecsi i get it now thanx!
 
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