5th & 6th Generation (2002-2006 & 2007-2011)Toyota Camry Discussion for years: 2002-2006 & 2007-2011
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I've heard there is a diff in results from the drum/spinner type dyno and the hub type used in your tests. Can anyone confirm/deny and if so with numbers?
This was found on a G35 forum:
Quote:
The Dyna-pack will almost always result in numbers about 10-15% higher than what you'll see on the Dynojet.
Dyna-Pack
Removes the wheels and measure directly from the hub. Removing 40-52lb in unsprung and rotational weight is very significant. This dyno is also a load/brake dyno which means the operator can vary the load (brake) therefore influencing the numbers. Brake dynos are great for tuning purposes since you can vary load and tune for real world driving situations.
DynoJet-
This is an inertia dyno. You simply roll the drive wheels onto a set of ~2000lb drums. You put the car in a 1:1 gear and measure the time it takes to spin the drums in relation to engine rpm. From there, torque is read and HP is calculated.
Words of wisdom:
1) A dyno is a tuning tool...that's all. You use it to measure gains and losses from mods.
2) All dynos read a little differently
3) Only be concerned about what your car gets and not what Joe Blow's car did 5 states away. It's apples to oranges.
4) A 220whp G35 run on a Dynojet will most likely run the same ET/MPH as a 255whp G35 run on a Dyna-Pack.
5) You can make any dyno show power that's not really there (ie adjusting load, correction factors, atmospheric conditions).
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The Dyna-pack will almost always result in numbers about 10-15% higher than what you'll see on the Dynojet.
Dyna-Pack
Removes the wheels and measure directly from the hub. Removing 40-52lb in unsprung and rotational weight is very significant. This dyno is also a load/brake dyno which means the operator can vary the load (brake) therefore influencing the numbers. Brake dynos are great for tuning purposes since you can vary load and tune for real world driving situations.
DynoJet-
This is an inertia dyno. You simply roll the drive wheels onto a set of ~2000lb drums. You put the car in a 1:1 gear and measure the time it takes to spin the drums in relation to engine rpm. From there, torque is read and HP is calculated.
Words of wisdom:
1) A dyno is a tuning tool...that's all. You use it to measure gains and losses from mods.
2) All dynos read a little differently
3) Only be concerned about what your car gets and not what Joe Blow's car did 5 states away. It's apples to oranges.
4) A 220whp G35 run on a Dynojet will most likely run the same ET/MPH as a 255whp G35 run on a Dyna-Pack.
5) You can make any dyno show power that's not really there (ie adjusting load, correction factors, atmospheric conditions).
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Where is TRD-VVTi when we need him??? I want to hear what TRD-VVTi has to said about this.
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Back on stock height and love it!
So, we know the tests are fundamentally flawed. The only way to do a real comparison would be to do Gene's bastardized I4 back-to-back with a V6 on the same dyno and compare the numbers.
I still don't see the point in running the piss out of an I4 with a turbo, when you can get roughly the same numbers with a N/A V6. I'm certain that turbo setup and install cost a lot more than my V6, there's zero warranty coverage, and I bet the V6 will last a hell of a lot longer than a wound-up I4.
Not to mention the legal violations present from removing the catalytic converters...
So, we know the tests are fundamentally flawed. The only way to do a real comparison would be to do Gene's bastardized I4 back-to-back with a V6 on the same dyno and compare the numbers.
I still don't see the point in running the piss out of an I4 with a turbo, when you can get roughly the same numbers with a N/A V6. I'm certain that turbo setup and install cost a lot more than my V6, there's zero warranty coverage, and I bet the V6 will last a hell of a lot longer than a wound-up I4.
Not to mention the legal violations present from removing the catalytic converters...
You have your opinion...
Same numbers? Gene is running 300 torque to the wheels. Now is that "roughly" the same number?
Turbo setup does cost more than your V6. But its uniqueness that we're after, which is why we mod our cars in the first place. I hope you see "that point".
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Same numbers? Gene is running 300 torque to the wheels. Now is that "roughly" the same number?
Turbo setup does cost more than your V6. But its uniqueness that we're after, which is why we mod our cars in the first place. I hope you see "that point".
I see "that point" clearly.
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Back on stock height and love it!
Same numbers? Gene is running 300 torque to the wheels. Now is that "roughly" the same number?
Turbo setup does cost more than your V6. But its uniqueness that we're after, which is why we mod our cars in the first place. I hope you see "that point".
a simple T3/T4 turbo kit will produce numbers in the 300+ whp range with pump gas and not so much boost... and the aftermarket support for the 2az-fe is unbeatable...
So, we know the tests are fundamentally flawed. The only way to do a real comparison would be to do Gene's bastardized I4 back-to-back with a V6 on the same dyno and compare the numbers.....
Im down to compare my V6 against an I4-T!
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07 Camry LE V6 - TRD drop, Fujita CAI, IS350 Wheels, SE Grille
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