2005 V6 vs 2003-04 V6

[willx45x]

I am the proud owner of a 2005 SE V6 4Runner. I have to say I'm pretty impressed with the engine/tranny performance so far. It's silky smooth and seems to have plenty of pep and acceleration. I believe (correct me if I'm wrong) that the 2005 engine is a new design for Toyota. A 5-speed V6, correct? As opposed to the 4-speed V6 in the 03/04 models. I think the Tacoma features the same engine.

Can anyone compare the performance of the new V6 with the old? Is the new engine a marked improvement. Are you 2005 V6 owners happy with the engine?

Any and all input is greatly appreciated!

 

[ToolmanJohn]

New 5 speed, sorry

You have the identical V6 as all 2003 and 2004 V6 owners . The only new thing about the 2005 is the addition of the 5 speed tranny.

Same engine, HP and Torque, no engine tweaks yet on the V6. We all have to wait and see if the supercharged 4.0 V6 from the new X-Runner truckwill be available in the 2006 4Runner. It is the same motor also, but with an optional supercharger.

The new 2005 V8 however also got VVT-i for the valvetrain, which is different from the 2003/04 V8 models.

 

[bulldog-yota]

As ToolmanJohn said the engine is exactly the same as the 03 and 04, the transmission is the same as the V8 now. I think people buying the 05s get a better deal than people buying the 03/04s.

The V6 got a better transmission and the V8 got VVTi. Also the initial bugs, etc should be sorted out by now. Like Sulphur smell, thump in driveline, moonroof rattles, front seat rattles on SE an SR5. Nothing major, but still overall a better vehicle with more ownership enjoyment.

The reason the V6 will feel more peppy now, is that you drive ratios are a lot shorter in the first 3 gears, so it will feel a lot stronger off the line.

Enjoy your new 05.

Kinda makes me jealous, but I'm happy with my "old war horse" 03.

 

[MicaBlue03]

Feeling stonger vs. being faster

bulldog-yota, your old war horse may not actually be at a disadvantage relative to the new 5 speed transmissions in terms of 0-60 times.

I haven't heard any specific time/speed comparisons, but while a lower first gear may pull harder off the line, it isn't always best for getting to 60 fastest. Lower and/or closer ratios can mean more shifts, and that can slow things down, even though there may be a lot of pull right off the line.

As an example, I remember Ford's deTomaso Pantera mid-engined sports car from the early 70s. It used one of Fords 351 "Cleveland" engines with quite a bit of torque and it was one of the fastest 0-60 cars available--5.1 seconds IIRC. Anyway, testers said the biggest factors in its quickness to 60 were the big engine, light weight, and the fact that it could do 0-60 all in first gear. So first gear wasn't particularly low and the car didn't really lurch off the line, but it pulled strongly in the midrange and no time was wasted shifting.

And there's also the example of the modern top-fuel dragsters that have the equivalent of a single-speed transmission with a torque converter. 5 seconds and change to 300 MPH--there's no time to shift anyway! Of course, they have other elements such as tires that change diameter and therefore effective gear ratio.

I think 5 speed auto trannies are fine, but it doesn't seem to be a big deal in most cases. More of a refinement, IMHO. And, of course, we'll be saying the same thing when state of the art for 4Runners is a 6 speed auto!

 

[EDGE]

Kinda makes me jealous, but I'm happy with my "old war horse" 03.

As a fellow V8 member WTH man, you want an 05 V6, say it ain't so

 

[bulldog-yota]

As a fellow V8 member WTH man, you want an 05 V6, say it ain't so

I was referring to the 05 V8, not the V6.

My V8 is just fine for my use and better than even the 05 V6 for my purposes. I need TQ first, HP second.

But still I think the 05s in general are better than their 03/04 counterparts, as they have refined a few things and made some upgrades.

 

[EDGE]

I was referring to the 05 V8, not the V6.

My V8 is just fine for my use and better than even the 05 V6 for my purposes. I need TQ first, HP second.

But still I think the 05s in general are better than their 03/04 counterparts, as they have refined a few things and made some upgrades.

I figured that was what you meant

 

[Hitman]

The reason the V6 will feel more peppy now, is that you drive ratios are a lot shorter in the first 3 gears, so it will feel a lot stronger off the line.

Are you sure about the shorter gear ratios in 1st, 2nd, and 3rd?

I thought that the only difference was the addition of a taller 5th gear to aid in fuel economy.

What are the numbers (gear ratios of the 4 speed and 5 speed tranny)?

 

[bulldog-yota]

Are you sure about the shorter gear ratios in 1st, 2nd, and 3rd?

I thought that the only difference was the addition of a taller 5th gear to aid in fuel economy.

What are the numbers (gear ratios of the 4 speed and 5 speed tranny)?

Yes I'm very sure on the gears.

Why would you put another overdrive gear on top of the current one with the power to weight of the 4R?? It will not be able to drive with such tall gearing.

See

http://www.toyota-4runner.org/showthread.php?s=&postid=72275#post72275

 

[Hitman]

Yes I'm very sure on the gears.

Why would you put another overdrive gear on top of the current one with the power to weight of the 4R?? It will not be able to drive with such tall gearing.

See

http://www.toyota-4runner.org/showthread.php?s=&postid=72275#post72275

So what are the actually ratios?? Are you assuming that the ratios for the '05 V6 tranny are the same as the V8 tranny? That might not be true.

Also, what are the differences in the rear end gearing? Are they different between years/models? How do you know that the '04 V6 and '05 V6 have the same differential gearing?

Final drive ratio is the important thing here, which of course includes transmission gearing as well as rear end gearing.

So who has all the numbers??

 

[boston_kevin]

only 1 5spd tranny

Toyota is making the decision that is both financially sound and design worthy. They are only making a single 5spd tranny for both the V8 and the V6. There is almost definitely a unique bellhousing for each to mate the tranny to the engine, but the diffs and the tranny are the same (as well as the 4H and 4L gear in the transfer case).

See http://www.toyota-4runner.org/showthread.php?s=&threadid=8559&perpage=15&pagenumber=2

About half way down I posted the final drive ratios for the 4spd and 5spd. Now both will have the same final drive ratio in 4H and 4L

For the 4spd final drive ratio in 4th gear:
2.756:1

For the 5Spd final drive ratio in 5th gear:
2.668:1

Notice the slight edge on the top end for better fuel economy...

For 1st gear...
For the 4spd final drive ratio in 1st gear:
10.961:1

For the 5Spd final drive ratio in 1st gear:
13.119:1

Major difference in the first gear which creates more usable torque when accelerating from 0 mph.

 

[EDGE]

I figured Toyota would only make 1 5speed, why have 2, seems the V8 still has the upper hand when it comes to torque off the line cause many members who bought 05 VVTi V8 4Runners mentioned they like the initial feel in the throttle responce on take off and everytime you hit the gas.

 

[bulldog-yota]

So what are the actually ratios?? Are you assuming that the ratios for the '05 V6 tranny are the same as the V8 tranny? That might not be true.

Also, what are the differences in the rear end gearing? Are they different between years/models? How do you know that the '04 V6 and '05 V6 have the same differential gearing?

Final drive ratio is the important thing here, which of course includes transmission gearing as well as rear end gearing.

So who has all the numbers??

I do now, and as everybody has said the 05 V6 has now exactly the same gearing as the V8 had all along. This includes reverse, axle ratios, transfer, etc. Simple economical sense.

If you really need the gear ratios and dont believe me go fish around here under new vehicle releases.

techinfo.toyota.com