3rd gen Engine/Drivetrain Engine/Drivetrain Modification Discussions for 1999-2003 Models Only (BJ chassis)

HP estimate(based on mods)

Old December-31st-2002 | 05:09 AM
  #31  
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Originally posted by 99proES
do ya get what im saying??? Hope so, cuz i get what im sayin.
I'm not sure but let's try. All added hp's add of cource hp's at the crank and the drivetrain takes ~25% (30 out of 130) of the power. And wheel power will be that 75% of the crank value, no matter how many hp's your engine gives. So drivetrain etc. will take that 25% of every added hp's too. That means if you get 10 hp's with new mods you'll get 7-8 hp's more at wheels.
Old December-31st-2002 | 10:54 AM
  #32  
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Originally posted by 99proES
i got a question...

Say you take a 1.8 with 122 hp.
You add a intake, header, custom or chrome or ceramic exaust 2.25 pipes, and a straight through muffler.
Would you just be freeing up more of the hp to reach wheels? I mean you would be adding any more hp to the crank would you? I mean yeah any forced induction, changing the pistons, cams, or head work would obviously add hp to the engine. But just freeing up intake and exaust does that ADD to the crank??
It's not that you are ADDING hp per say. It's more that your are freeing up power that is restrained due to restrictions in the intake/exhaust system. But you do net more power. Keep in mind that our cars only have the power of 100 weed wackers so don't expect any more than 15-20 hp to the wheels from intake, exhaust, headers.
Old December-31st-2002 | 11:53 AM
  #33  
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you DO get more hp on I/H/E mods....the only way that you net more to the wheels without an actual increase is by doing tranny mods,i.e.,lightened flywheel,somehow getting a more efficient tranny,like a manual compared with an automatic will have less whp loss
Old January-8th-2003 | 07:23 PM
  #34  
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Originally posted by Farsyde

But you do net more power. Keep in mind that our cars only have the power of 100 weed wackers so don't expect any more than 15-20 hp to the wheels from intake, exhaust, headers.
Even a 2.0 Protege would be lucky to get 15-20 at the CRANK with I/H/E.
Old January-13th-2003 | 10:54 PM
  #35  
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Didn't that Traveler dude get about 9hp at the wheels with just a custom header? I forget and he seems to be missing. I read somewhere that the most restrictive part of the exhaust in 3rd gens is the stock exhaust manifold and first catalyst, and a true header that eliminates the first cat could definately give some decent gains, although its illegal. 15bhp doesn't sound unreal, but probably would come in closer to 10bhp.
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