100hp / Liter

6MT · 10-18-2011, 05:51 PM

Quote:

Originally Posted by pulpmelon_Z

Thanks red

I think I'll run cats on the Z, as I have a test pipe on my civic and that stinks of gas even after custom tune, plus the exhaust goes:

Will your MOT fail?

red6spd · 10-18-2011, 05:28 PM

No prob. Yea with the Test Pipes your gonna get the smell but I kind of like it LOL. Test pipes wont make your car sound bad or nothing like that your just gonna have more Rasp.

pulpmelon_Z · 10-19-2011, 03:06 AM

The Civic is pretty heavily tuned, but luckily I know an 'easy going garage' for the MOT

Jordo! · 10-19-2011, 04:29 AM

On the average, about 307-310 to the tire on a dynojet should be in that ball park at the crank, but really short of removing the motor and placing on an engine dyno, it's an educated guess at best.

On a dynojet, full bolt-ons' plus tune will get you in that ball park, give or take transient factors like intake temps and correction factor. You may exceed it with pulleys (IMO, not recommended) and long tube headers (big job).

Other kinds of dynamometers typically have numerous settings that can be adjusted, so depending on how they are calibrated, it's hard to say. Dynojets are generally very, very consistent from one to the other, where correction factor is only major X factor.

But really, that specific output per liter isn't anything special. You can build N/A motors that will exceed it, and with forced induction go well beyond it.

pulpmelon_Z · 10-19-2011, 05:13 AM

My two local dyno's are a MAHA and a Dyna-Pack

TBH I dont really care what the headline number is so long as its 40hp above the base line - job done

Jordo! · 10-19-2011, 01:07 PM

Quote:

Originally Posted by pulpmelon_Z

My two local dyno's are a MAHA and a Dyna-Pack

TBH I dont really care what the headline number is so long as its 40hp above the base line - job done

Pick one, get a baseline, work out the change from the claimed 332 bhp, add bolt-on's and see what you gain

Is MAHA a rolling road? Never heard of it.

Cmike2780 · 10-19-2011, 01:34 PM

Just get twin turbo's and leave the 370hp figure in the dust. At the end of the day, 370 is just a thoeretical number in your head since you can't get an accurate number @ the crank without pulling the engine off the chassis. Full bolt-on's and an UpRev tune can def get you close to that number considering its theoretically just a 38hp increase. If the claims are anywhere near true, just the Stillen Gen 3's and Stillen CBE is "suppose" to net 35.5hp @ the wheels. Which would translate to a few more at the crank.

pulpmelon_Z · 10-19-2011, 01:41 PM

Its a TAT sun dyno with maha rollers in truth.

Jordo! · 10-19-2011, 09:11 PM

Hmm. Must be a kind of roling road then. If it's load holding the numbers you make will have a lot to do with how they have it calibrated for your car.

You should get a whp and estimate for bhp based on coast down. be interesting to see what you make stock and modded.

pulpmelon_Z · 10-20-2011, 03:43 AM

Quote:

Originally Posted by Jordo!

Hmm. Must be a kind of roling road then. If it's load holding the numbers you make will have a lot to do with how they have it calibrated for your car.

You should get a whp and estimate for bhp based on coast down. be interesting to see what you make stock and modded.

Correct, It uses inertia run down mode to work out a drive loss figure, and DIN or SAE correction for environmental factors.

The crank figures this dyno gives are supprisingly accurate.

After i've paid for a new kitchen roof, the Z is gunna get tuned up

Lemers · 10-19-2011, 09:39 PM

The 100hp/liter is a performance goal for the industry for high performance cars.

Pelican170 · 10-20-2011, 10:20 AM

Ive read in the past that the difference from WHP to Crank HP is about 15%. So i would think that if you dyno at 315 whp, that would be around the 370 crank HP.. of course as mentioned all dynos are different and a Dynojet will read higher than Mustang dynos as well, so who knows if it is ever accurate. But then again, how do they agree upon the 370z have 331 hp in the first place??

Jordo! · 10-20-2011, 01:29 PM

Quote:

Originally Posted by Pelican170

...a Dynojet will read higher than Mustang dynos as well...

Not necessisarily... all depends how they calibrate it. They can "break hearts" or "lift spirits" depending on the settings.

Quote:

Originally Posted by Pelican170

...how do they agree upon the 370z have 331 hp in the first place??

Presumably, on an engine dyno.

Then we might wonder whether they're claiming ps units (probably) or hp units, which is a bit different (ps units are a few % lower).

Then again, there's usually additional fudge factors either to round up (selling point) or under rate (happier customers when they go to chassis dynos) that are applied behind the scenes.

Only way to really know is to break-in the motor, make sure all is good, remove it and put it on an engine dyno.

Oh, and it's allegedly 332 bhp

Pelican170 · 10-20-2011, 03:24 PM

Quote:

Originally Posted by Jordo!

Not necessisarily... all depends how they calibrate it. They can "break hearts" or "lift spirits" depending on the settings.

Presumably, on an engine dyno.

Then we might wonder whether they're claiming ps units (probably) or hp units, which is a bit different (ps units are a few % lower).

Then again, there's usually additional fudge factors either to round up (selling point) or under rate (happier customers when they go to chassis dynos) that are applied behind the scenes.

Only way to really know is to break-in the motor, make sure all is good, remove it and put it on an engine dyno.

Oh, and it's allegedly 332 bhp

whoops

lol. Anyway, from what ive heard there is a 15% loss from whp to crank. so 370 crank hp i dont see too hard to get to... I mean, if the nismo has 350 stock, and you add the standard bolt ons, i would think it would be over this mark. (This is not a nismo vs .... thread. I just used the nismo cuz it is closer to the 370 hp mark...)

Cmike2780 · 10-20-2011, 03:54 PM

Quote:

Originally Posted by Pelican170

whoops

lol. Anyway, from what ive heard there is a 15% loss from whp to crank. so 370 crank hp i dont see too hard to get to... I mean, if the nismo has 350 stock, and you add the standard bolt ons, i would think it would be over this mark. (This is not a nismo vs .... thread. I just used the nismo cuz it is closer to the 370 hp mark...)

True, although your gains with the same bolt-on's on a Nismo will be less. Switching over to a Stillen CBE on a Nismo for example, won't gain you another 18rwhp over a stock Nismo. For the most part, the Nismo just has a better flowing exhaust and engine tuning.

10-18-2011, 05:28 PM	#2 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 23	No prob. Yea with the Test Pipes your gonna get the smell but I kind of like it LOL. Test pipes wont make your car sound bad or nothing like that your just gonna have more Rasp. __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

10-19-2011, 04:29 AM	#4 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	On the average, about 307-310 to the tire on a dynojet should be in that ball park at the crank, but really short of removing the motor and placing on an engine dyno, it's an educated guess at best. On a dynojet, full bolt-ons' plus tune will get you in that ball park, give or take transient factors like intake temps and correction factor. You may exceed it with pulleys (IMO, not recommended) and long tube headers (big job). Other kinds of dynamometers typically have numerous settings that can be adjusted, so depending on how they are calibrated, it's hard to say. Dynojets are generally very, very consistent from one to the other, where correction factor is only major X factor. But really, that specific output per liter isn't anything special. You can build N/A motors that will exceed it, and with forced induction go well beyond it. __________________ Enjoy it. Destroy it.

10-19-2011, 01:34 PM	#7 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 30	Just get twin turbo's and leave the 370hp figure in the dust. At the end of the day, 370 is just a thoeretical number in your head since you can't get an accurate number @ the crank without pulling the engine off the chassis. Full bolt-on's and an UpRev tune can def get you close to that number considering its theoretically just a 38hp increase. If the claims are anywhere near true, just the Stillen Gen 3's and Stillen CBE is "suppose" to net 35.5hp @ the wheels. Which would translate to a few more at the crank. __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

10-19-2011, 09:11 PM	#9 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	Hmm. Must be a kind of roling road then. If it's load holding the numbers you make will have a lot to do with how they have it calibrated for your car. You should get a whp and estimate for bhp based on coast down. be interesting to see what you make stock and modded. __________________ Enjoy it. Destroy it.

10-19-2011, 09:39 PM	#11 (permalink)
Lemers A True Z Fanatic Join Date: Mar 2010 Location: Izmir, Turkey Posts: 15,371 Drives: 2012 Traverse LTZ Rep Power: 54	The 100hp/liter is a performance goal for the industry for high performance cars. __________________ 2010 Black Cherry Touring/Sport/Nav Now - 2012 Travese LTZ until I leave for Turkey

10-19-2011, 03:06 AM	#3 (permalink)
pulpmelon_Z Base Member Join Date: Oct 2011 Location: UK Posts: 23 Drives: 370z Rep Power: 15	The Civic is pretty heavily tuned, but luckily I know an 'easy going garage' for the MOT

10-19-2011, 05:13 AM	#5 (permalink)
pulpmelon_Z Base Member Join Date: Oct 2011 Location: UK Posts: 23 Drives: 370z Rep Power: 15	My two local dyno's are a MAHA and a Dyna-Pack TBH I dont really care what the headline number is so long as its 40hp above the base line - job done

10-19-2011, 01:41 PM	#8 (permalink)
pulpmelon_Z Base Member Join Date: Oct 2011 Location: UK Posts: 23 Drives: 370z Rep Power: 15	Its a TAT sun dyno with maha rollers in truth.

10-20-2011, 10:20 AM	#12 (permalink)
Pelican170 Track Member Join Date: Jul 2010 Location: Sandy Hook, CT Posts: 972 Drives: Nissan 370z Nismo Rep Power: 17	Ive read in the past that the difference from WHP to Crank HP is about 15%. So i would think that if you dyno at 315 whp, that would be around the 370 crank HP.. of course as mentioned all dynos are different and a Dynojet will read higher than Mustang dynos as well, so who knows if it is ever accurate. But then again, how do they agree upon the 370z have 331 hp in the first place?? __________________ Fast Intentions CF Exhaust - Fast Intentions HFC's - HPS Tubes w/ AFE Dry Flow Filter's

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