I know that the 3rd generation is the slowest. So which Q generation is the fastest?
Anyone have any real life race results between different generations?
fastest Q?
I'd say throw out the "break in" part for comparisons sake as these were probably all un-broken in. But I will say that both the magazine tester's and methodologies/equipment could easily have evolved. Thus making the comparisons of tests nearly 15 years apart from one another inaccurate.
Nonetheless, I'd say the latest version Q is the fastest in all categories, until we can get our hands on a couple, take the speed limiters off and go for Unlimited Top Speeds. Who's in?
<if we could only find 02/03 Q's for less than $10k>
Nonetheless, I'd say the latest version Q is the fastest in all categories, until we can get our hands on a couple, take the speed limiters off and go for Unlimited Top Speeds. Who's in?
<if we could only find 02/03 Q's for less than $10k>
dkill wrote:Well the original Q45 could easily run with low 14 second cars that ran high 90s ( I raced countless M3s/svt cobras/other low 14 second cars, back in 99 with my 91 q45)
that is so true!It always behaved like a very low 14's car in most driving situations out side of dead start.
The trap speed on my old 91 ( with JWT but slightly heavy 17 inch wheels) was 99 mph in the quarter.
That engine currently lives on, in repomans Q45.
Altiman:We dont know, just an idiosyncracy we and the magazines have noted about the VH45's and VK 45's
Fred..
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AZhitman
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Altiman94 wrote:why's it take a v8 longer to break-in than any other engine?
Has nothing to do with it being a V8 really.
It's the build tolerances of the VH45DE that are the culprit here, as well as the bulletproof nature of the engine.
As you'll recall, mine was recently torn down. All my LH bank cam lobes were mic'ed, as were cam bearings. All were EXACTLY the same as the specs on a set of new ones (0 miles uninstalled) on hand. In addition, the cross-hatching was still evident in the cylinder bores, and there was absolutely no wear within the cylinders whatsoever (supported by a post-reassembly compression test).
This is at 104K miles, BTW. There's no reason to suspect this engine wouldn't go 400K miles or more if maintained as it has been.
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elwesso
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I think this all depends on your definition of FAST.
in 0-60 and 1/4 mile, the 02+ would wipe any other generation... However, gen 1 would probably beat the 02 in a 40/50-80+ race because of the transmission...
THe new Q has a 5 speed, so that means in the 50-80 there has to be a shift.... We can make it to nearly 90 in 2nd....
in 0-60 and 1/4 mile, the 02+ would wipe any other generation... However, gen 1 would probably beat the 02 in a 40/50-80+ race because of the transmission...
THe new Q has a 5 speed, so that means in the 50-80 there has to be a shift.... We can make it to nearly 90 in 2nd....
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maxnix
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1995 Infiniti Q45t
2000 Infiniti Q45
1.) No culprits, just very uniformly tight tolerances. The build quality is comparable to anything produced when tolerances are considered.Altiman94 wrote:1.) well what specific build tolerances are the culprit for long-term engine breaking in? 2.) If this were the case, the compression would not be up to factory spec until the engine were completely broken in and the car woudl feel very, very sluggish even brand new. 3.) Is this true of these engines?
2.) Does not compute. Compression is fine new. The motor will perform better after it is fully broken in progressively and gently.
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Q45tech
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1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Bearings are set very very very tight close new so that there is plenty of wear range............the FMEP* just decreases as the engine breaks in.A well oiled changed Q may not reach its peak power till 100,000 miles then the ring wear starts the downward cycle as the compression decreases.
*We know BMEP look up FMEP and how the two balance.
My 262,000 mile engine fails the cranking compression test [cold/warm] yet when the rings expand under load and heat the as new power is there..........
I'm sure the bearing clearances are on the excessive side, helps power till that fateful day when it slings a rod.
As long as it doesn't burn oil things are usually ok..........if you get more than 3,000 miles/90 days per quart.
*We know BMEP look up FMEP and how the two balance.
My 262,000 mile engine fails the cranking compression test [cold/warm] yet when the rings expand under load and heat the as new power is there..........
I'm sure the bearing clearances are on the excessive side, helps power till that fateful day when it slings a rod.
As long as it doesn't burn oil things are usually ok..........if you get more than 3,000 miles/90 days per quart.
), but it feels faster getting to 60 mph than the 2003 Q45. That my have been a bit subjective, although the conditions were fairly similar (same day test drive on the same section of highway, same temps/humidity/pressure, etc).