Top Gear Z vs Z4

UNKNOWN_370 · 05-16-2011, 08:33 PM

Quote:

Originally Posted by jnaut

yea the engine is harsh up in the revs unlike the n54 engine but the srm is awesome.

If you FI the Z, a lot of the harshness in the engine would resolve. Then people will say the Z motor sounds too sedate. When comparing asian to german, people will always nitpik the asian while letting a lot of things slide on the german car.

Red__Zed · 05-16-2011, 08:35 PM

Quote:

Originally Posted by UNKNOWN_370

If you FI the Z, a lot of the harshness in the engine would resolve. Then people will say the Z motor sounds too sedate. When comparing asian to german, people will always nitpik the asian while letting a lot of things slide on the german car.

UNKNOWN_370 · 05-16-2011, 08:37 PM

Quote:

Originally Posted by Red__Zed

Turbos change the whole sound of the car. It actually quiets down NA cars a bit, engine will sound smoother

Red__Zed · 05-16-2011, 08:39 PM

Quote:

Originally Posted by UNKNOWN_370

Turbos change the whole sound of the car. It actually quiets down NA cars a bit, engine will sound smoother

Pretty sure a turbo does not make an engine sound any smoother.

Hambone1 · 05-16-2011, 08:42 PM

Unknown, are you thinking of some of the stock FI engines that are on the market maybe?

UNKNOWN_370 · 05-16-2011, 08:46 PM

YouTube - GTM 370Z TWIN TURBO CUSTOMER TEST DRIVE

In this video, the first thing customer notices, his engine is smoother and a little quieter. Then he notices the adrenaline of his turbo. This is quite a normal effect for a v6.

Drive a 328 and a 335I. At WOT the 328 is louder.

Hambone1 · 05-16-2011, 08:48 PM

Quote:

Originally Posted by UNKNOWN_370

YouTube - GTM 370Z TWIN TURBO CUSTOMER TEST DRIVE

In this video, the first thing customer notices, his engine is smoother and a little quieter. Then he notices the adrenaline of his turbo. This is quite a normal effect for a v6.

No speakers at the moment, I'll take your word for it. I'm by no means an expert on turbos so I don't doubt you without listening to it

Red__Zed · 05-16-2011, 08:49 PM

Quote:

Originally Posted by UNKNOWN_370

YouTube - GTM 370Z TWIN TURBO CUSTOMER TEST DRIVE

In this video, the first thing customer notices, his engine is smoother and a little quieter. Then he notices the adrenaline of his turbo. This is quite a normal effect for a v6.

Drive a 328 and a 335I. At WOT the 328 is louder.

Red__Zed · 05-16-2011, 08:50 PM

the smoothness he is referring to is the power delivery, by the way, and then the suspension at the end.

UNKNOWN_370 · 05-16-2011, 08:51 PM

Quote:

Originally Posted by Hambone1

No speakers at the moment, I'll take your word for it. I'm by no means an expert on turbos so I don't doubt you without listening to it

I'm no expert either but I have owned a couple of turbocharged cars. I've driven a few turbo and non turbo as well. I used to own a GN and I remember my 3.8 being smoother than the v8. I just had that turbo whistle.

Red__Zed · 05-16-2011, 08:54 PM

A turbo sitting on your exhaust pipe has literally nothing to do with engine smoothness. It may quiet down the exhaust note, and it will remove some high frequency components, but the harshness in the motor won't disappear with FI...

UNKNOWN_370 · 05-16-2011, 08:56 PM

Quote:

Originally Posted by Red__Zed

the smoothness he is referring to is the power delivery, by the way, and then the suspension at the end.

They didn't do any suspension work. That's the GTM garage and a stock Z with turbo. You can even here the engine is lower compared to other vids. The only turbo I've heard that's louder than stock is that one they remove the muffler to install.

UNKNOWN_370 · 05-16-2011, 09:02 PM

Quote:

Originally Posted by Red__Zed

A turbo sitting on your exhaust pipe has literally nothing to do with engine smoothness. It may quiet down the exhaust note, and it will remove some high frequency components, but the harshness in the motor won't disappear with FI...

I didn't say disappear I said smooth it out a lot... anyway red zed. the turbo is placed at the exhaust but there is a lot of prep that goes into the engine to make that turbo operaiional and reliable. But ok red. U know everything.

Let me just correct one thing. I been saying turbos. I should be saying twin turbos. Single turbos have a different effect. That part is my bad.

m4a1mustang · 05-16-2011, 09:04 PM

The harshness won't dissappear but it might abate some of it. I know when I added my CBE and Injens, the engine was not quite as harsh above 6k but it certainly wasn't smooth. There was a noticable improvement, though.

Red__Zed · 05-16-2011, 09:04 PM

Quote:

Originally Posted by UNKNOWN_370

They didn't do any suspension work. That's the GTM garage and a stock Z with turbo. You can even here the engine is lower compared to other vids. The only turbo I've heard that's louder than stock is that one they remove the muffler to install.

3:12 is were he mentions suspension smoothness relative to his car.

05-16-2011, 09:04 PM	#44 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	The harshness won't dissappear but it might abate some of it. I know when I added my CBE and Injens, the engine was not quite as harsh above 6k but it certainly wasn't smooth. There was a noticable improvement, though. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

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05-16-2011, 08:42 PM	#35 (permalink)
Hambone1 Enthusiast Member Join Date: Mar 2011 Location: Bellevue, WA Posts: 438 Drives: 370Z MB 7AT Sport Rep Power: 14	Unknown, are you thinking of some of the stock FI engines that are on the market maybe?

05-16-2011, 08:46 PM	#36 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14857	YouTube - GTM 370Z TWIN TURBO CUSTOMER TEST DRIVE In this video, the first thing customer notices, his engine is smoother and a little quieter. Then he notices the adrenaline of his turbo. This is quite a normal effect for a v6. Drive a 328 and a 335I. At WOT the 328 is louder.

05-16-2011, 08:50 PM	#39 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	the smoothness he is referring to is the power delivery, by the way, and then the suspension at the end.

05-16-2011, 08:54 PM	#41 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	A turbo sitting on your exhaust pipe has literally nothing to do with engine smoothness. It may quiet down the exhaust note, and it will remove some high frequency components, but the harshness in the motor won't disappear with FI...