2004 vs 2005 V8 HP/Torque
- Thread starter soimcrazy
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sharp4runr
New member
Yes do a search it has been discussed thoroughly... 2005 V8s got VVTI which boosted HP/Torque.
peter78
Super Moderator
Oops..... I got the specs from Edmunds.
2005
Performance
Base Number of Cylinders: 8 Base Engine Size: 4.7 liters
Base Engine Type: V8 Horsepower: 270 hp
Max Horsepower: 5400 rpm Torque: 320 ft-lbs.
Max Torque: 3400 rpm Maximum Payload: 1450 lbs.
Maximum Towing Capacity: 7000 lbs. Drive Type: 4WD
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I guess it shows that I don't own a V8.:arrow:
2005
Performance
Base Number of Cylinders: 8 Base Engine Size: 4.7 liters
Base Engine Type: V8 Horsepower: 270 hp
Max Horsepower: 5400 rpm Torque: 320 ft-lbs.
Max Torque: 3400 rpm Maximum Payload: 1450 lbs.
Maximum Towing Capacity: 7000 lbs. Drive Type: 4WD
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I guess it shows that I don't own a V8.:arrow:
Northof49 said:
Thanks, does the higher compression ratio require premium fuel in the 2005's? Based on the #'s I don't see how you could feel a 3% increase in torque and a horsepower increase in the 4800 - 5400 range??? I never drive my 4runner in that rpm range. I do drive my 350Z in that range but its a sports car
:
Northof49
New member
As always, premium may be slightly better, particularily for things like towing, hills, hot days, or some combination of that, but it's made to run normally on 87oct.Pitbull said:Thanks, does the higher compression ratio require premium fuel in the 2005's? Based on the #'s I don't see how you could feel a 3% increase in torque and a horsepower increase in the 4800 - 5400 range??? I never drive my 4runner in that rpm range. I do drive my 350Z in that range but its a sports car
As for power differences, I'd like to say I notice just a hint more torque throughout the rev range, but it could be in my head. It's definetly a noticeable power jump in the higher rpms.....where the "old" V8 runs out of steam, the 05 keeps pulling progressively harder right to redline. So for, say, kickdown when passing, the new motor has noticeably more power, and a more linear delivery.
sharp4runr
New member
Northof49 said:2005's actually have 330 ft/lbs
LOL thanks, I thought I was going insane
AlexJet
New member
Northof49 said:
Toyota recommends premium, but it's true, that for normal driving condition it goes with medium (89). I used to use premium (91), then switch to medium (89) for economical purposes, but had elevation of fuel consumption. So instead of paying 5c less for the fuel, I'm paying more for consumption, but altogether it become in savings approximately 1-2c per liter. Actually not a big deal, especially if you want to last your truck long.
AlexJet said:
Do a search on this topic, its been beat to death. The concensus is that 87 works great and that the performance gain from 91 is very small. It premium does nothing to make your truck last any longer, and you don't save money with premium, it cost you more money. Don't waste your money on premium or midgrade, use regular. If you want to treat your rig right buy only www.toptiergas.com which is recommended by Toyota. Hope this helps.
Thai
Elite Member
For more on Premium vs. Regular fuel, see this thread:
http://www.toyota-4runner.org/showthread.php?s=&threadid=683
http://www.toyota-4runner.org/showthread.php?s=&threadid=683
Bumpin' Yota
New member
Pitbull said:
so with the 10:1 CR the 87 and 89 octane doesn't ping?
I'd be scared to death of my engine pinging on that stuff...a truck is a large investment, so paying an extra 30 cents a gallon to make sure the engine doesnt ping would be peace of mind i'd think...... But they dont seem to have that issue?
sharp4runr
New member
RTFM and you'll see that 87 is all you'll need... Same with the V6 even though some think that permium is needed for the V6.
Pay the extra .30 cents, it's your cash. I throw premium in mine because it seems to have less sulfur smell than with the regular.
Pay the extra .30 cents, it's your cash. I throw premium in mine because it seems to have less sulfur smell than with the regular.
You will never hear your 4R ping as it has advanced detonation detection. It will sense the detonation and pull back the timing long before you would ever hear it.
I can guarantee that in hot weather if you are using 87 Octane the timing is going to be pulled back and you will not get your 270HP worth.
I'm getting tired of people on this board who claim that 87 is more than enough for your 4R. This may be the case in ideal circumstances but under hard acceleration in warmer climates I can guarantee that the timing will be retarded due to knock. This is a High Compression V8. You can only stretch physics so far.
Will it run fine on 87? You bet ya! That's why the motor has advance anti-knock sensing. Will you get 100% of the power the engine is capable of making on 87? Maybe not. That's why I use 91.
One of these day I'm going to buy a hookup for my laptop and post the results.
My 2 Cents
I can guarantee that in hot weather if you are using 87 Octane the timing is going to be pulled back and you will not get your 270HP worth.
I'm getting tired of people on this board who claim that 87 is more than enough for your 4R. This may be the case in ideal circumstances but under hard acceleration in warmer climates I can guarantee that the timing will be retarded due to knock. This is a High Compression V8. You can only stretch physics so far.
Will it run fine on 87? You bet ya! That's why the motor has advance anti-knock sensing. Will you get 100% of the power the engine is capable of making on 87? Maybe not. That's why I use 91.
One of these day I'm going to buy a hookup for my laptop and post the results.
My 2 Cents
