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-   -   Just finished my break-in period, does this engine not like to rev? (http://www.the370z.com/nissan-370z-general-discussions/16193-just-finished-my-break-period-does-engine-not-like-rev.html)

rsximus 03-19-2010 02:08 AM

Just finished my break-in period, does this engine not like to rev?
 
Just passed the 1200 mile break in period on my solid red 370z, it's been a long 3 weeks that's for sure.

So today I decided to have some fun, floored it in 1st, 2nd and 3rd.

The car is decently quick, doesn't quite feel like 332hp but hey I think the VQ engines always feel slower for some reason than the advertise HP right? Same thing with my sister's G35 coupe back in the days.

On to my concern, I've read a lot of reviews on how the engine sounds like a school bus ect, doesn't like to rev, sounds coarse ect. ect.

I think I would have to agree. This engine is fine puttering around at less than 4k miles but once it reaches to redline the motor sounds like its gonna tear itself apart! It just does not sound very happy at anything past 5k RPMs. Very coarse sounding.

Question is will an intake and nice exhaust system change the character of the engine at all? Maybe make it sound smoother somehow?

Other than the engine, I LOVE the way the car looks and drives. Absolutely beautiful, almost looks exotic. :tup:

gumpy 03-19-2010 02:57 AM

yeah i have to agree with you, doesn't sound the best past 5k... so i don't rev past it...

it's a shame really... it was almost a perfect sports car... but nissan got the sound wrong...

mattkim85 03-19-2010 03:25 AM

Quote:

Originally Posted by rsximus (Post 454123)
Question is will an intake and nice exhaust system change the character of the engine at all? Maybe make it sound smoother somehow?

Other than the engine, I LOVE the way the car looks and drives. Absolutely beautiful, almost looks exotic. :tup:

yes. it will sound like a whole different engine. An intake will get you a nice throaty? sound up at 6-7.5k, and an exhaust will give you a nice growl down low that sounds like a V8. In addition, aftermarket headers and cats would only help make it sound and feel faster.


By the look of your screen name im guessing your coming from a k20?
If so, well so am i, so ill tell you this. First couple weeks of owning the Z i was not enjoying it as much because it wasnt as rev happy as it was and it didnt sound that nice either (compared to the k20). But getting used to all that low end torque and adding on a couple mods like you mentioned it brought back the enjoyment and much more.

m4a1mustang 03-19-2010 05:58 AM

Intake and exhaust will help smooth things out. The engine is a lot smoother without restricted breathing... its a big difference!

I agree that the car doesn't feel fast. Power delivery is, well, unexciting to say the least. You just have to trust that its going much quicker than you think it is.

Vegitto-kun 03-19-2010 06:26 AM

i havent noticed any revving problems.

I do admit for some reason any speed feels slow.

I tend to feel asleep if I drive 60

hell I drove it at over 120 once.

it just felt like going 70

dangerous though

Matt 03-19-2010 06:29 AM

My engine sound/feel was like night and day above 5k (well, throughout the entire band, tbh) once I got new exhaust/HFCs. No words can express how much better it sounds and feels.

I have to say, my biggest disappointment was how coarse/rough the engine felt around 6k, right after break-in. I was so happy to get past break-in, only to be let down by the worry that my engine was about to explode.

If you plan on modding at all, make hfc/exhaust your first mods. Intakes aren't showing a lot of gains, from what I've seen, below the 6-7k RPM range, so it may not be the most "bang for buck" as a daily driver.

As far as being "slow", I think you'll notice the car seems to get a little quicker as you put the miles on it. It felt like I could floor it in 3rd gear and it wouldn't even respond. Now that I'm up around 3k miles (not much compared to other members), I think flooring it would put me into a ditch!

370Zsteve 03-19-2010 07:06 AM

Quote:

Originally Posted by m4a1mustang (Post 454178)
Intake and exhaust will help smooth things out. The engine is a lot smoother without restricted breathing... its a big difference!

I agree that the car doesn't feel fast. Power delivery is, well, unexciting to say the least. You just have to trust that its going much quicker than you think it is.

:iagree: Case in point: I'm driving on the Merritt Pkwy in CT the other day, there is a stretch between Westport and Norwalk where there are no exits for about 3 miles, and there are no other cars so I figure "what the hell, can't get much safer than this" so I turn on the radar detector and drop down a gear and floor it. In no time I'm going pretty fast, I figure maybe I'm getting close to 100...so I check the speedo and it's at 130. Holy schit. :eekdance:

Let's just say the power is very linear and that can fool you.

Matt 03-19-2010 07:11 AM

Quote:

Originally Posted by 370Zsteve (Post 454220)
so I turn on the radar detector and drop down a gear and floor it. In no time I'm going pretty fast, I figure maybe I'm getting close to 100...so I check the speedo and it's at 130.

http://rsxisfaster.files.wordpress.c...inkbunnies.jpg

370Zsteve 03-19-2010 07:21 AM

Quote:

Originally Posted by Matt (Post 454223)

That's me with my Bunnies! They be groovin' on my hood ornament y0

m4a1mustang 03-19-2010 08:06 AM

Lol that's ******* cute, I don't care who you are. Bunnies ftw.

chris410 03-19-2010 08:38 AM

An exhaust really opens up the sound, I was actually shocked at how good my car sounded when I put the exhaust on. Also, the car will actually get faster as you put more miles on the engine. When I first got mine I thought it was "quick" but honestly was a bit disappointed however, seems like since I hit 3000 miles the car got significantly stronger.

MightyBobo 03-19-2010 08:57 AM

You really need to be in the 5K+ area to even feel the true power - just look at the dyno charts. Course feeling or not, you sure wont feel any power below 5K much :)

Modshack 03-19-2010 09:12 AM

Quote:

Originally Posted by Matt (Post 454195)

I have to say, my biggest disappointment was how coarse/rough the engine felt

Mine too, and really, the only thing I don't like about the car. While an exhaust and intake will change the sound, it really doesn't change the feel....

spearfish25 03-19-2010 09:19 AM

I'd have to say that my car has more of a feel of a barrier around 4-5k RPM. It's great up to there, then hits that loud unpleasant raucous zone. Then it's like breaking through the sound barrier and she just screams from 5.5k up to redline (pleasantly). For me, it's more of a rough zone at 5k than a bad entire upper end of the RPMs.

Matt 03-19-2010 09:23 AM

Quote:

Originally Posted by Modshack (Post 454334)
Mine too, and really, the only thing I don't like about the car. While an exhaust and intake will change the sound, it really doesn't change the feel....

It may be mental, but I don't feel anywhere near the same harshness as I did from the engine.


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