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  TOV Articles > First Dyno Test of 2008 Honda Accord EX-L V6 5AT > > Re: Jeff, how does this compare with an '06+ TSX dyno?

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STL
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Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-17-2007 18:05
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It would be neat to see the plots overlaid -- if they were done on the same dyno that is.
JeffX
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-17-2007 21:37
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STL wrote:
It would be neat to see the plots overlaid -- if they were done on the same dyno that is.


yeah, i've been using this same dyno for a while. here's what it looks like:


STL
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-19-2007 11:17
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Am I reading that right...is the I4 in the TSX really creating more power below 5.2k than the V6 in the new Accord?
JeffX
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-19-2007 13:10
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STL wrote:
Am I reading that right...is the I4 in the TSX really creating more power below 5.2k than the V6 in the new Accord?


no, that's the Accord's torque curve. if you look at dyno plots, the dyno plots always intersect at around 5200 rpms. That's because hp and torque are strictly related by the following equation:

hp = tq * rpm/5252

as you can see, below 5252 rpm, the torque figure will always be greater than the hp figure, and the curves will always intersect at 52522rpm.

STL
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-19-2007 14:11
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Doh! I guess I got confused because the TSX's peak HP is about the same as the Accord's peak torque. It all makes more sense now.

So when are you going to dyno and I4 Accord? I'd be curious to see how that engine responds when switching from 87 to 91+ octane.

JeffX
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-19-2007 14:31
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STL wrote:
Doh! I guess I got confused because the TSX's peak HP is about the same as the Accord's peak torque. It all makes more sense now.

So when are you going to dyno and I4 Accord? I'd be curious to see how that engine responds when switching from 87 to 91+ octane.



I will dyno the other Accords as I'm able to get them. It will be probably at least 2 weeks before I can get my hands on another one.

Ra005e
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-20-2007 08:47
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Correct me if I'm wrong, but doesn't the sedan V6 only come with variable timing, not traditional VTEC w/ variable lift? Only one lift profile.

I only skimmed the details on the new engines, but that's what I remember.

Since both versions are rated at the same maximum output, I thought they might have underrated the VTEC-equipped V6 that's available with the 6-speed(coupe), compared with the i-VTEC(true i-VTEC, not just because it has VCM) V6 mated to the auto (sedan). Or just slightly overrated the one in the sedan (though I'm not entirely convinced of that).

This was before even seeing the dyno results.

Here's hoping the coupe V6, as well as the I4s, give a better showing.


CarPhreakD
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Re: Jeff, how does this compare with an '06+ TSX dyno? [View Article]    (Score: 1, Normal) 10-20-2007 13:53
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I'm pretty sure that both engines are the same in terms of V-tec lift profiles being applied to intake side only. Both engines are still SOHC afterall. The k-series engines still use a "traditional" V-tec system (along with variable cam phasing), with V-tec applied to both intake and exhaust.

 
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