Another Dyno Run.......Long Story...

JetTech · 05-13-2004, 04:39 PM

ok ok, so it's not my Titan that I had dynoed (No VOLANT YET!!!!). So I took my wifes Lincoln Aviator and had it done at the same place as I had my Titan dynoed last January. I wanted to post this dyno sheet because it confirms, to me at least, that the Titan is in FACT, making more horsepower than Nissan claims. Read on to see why I feel this way......

Here's a little background on the Aviator so you know what we're dealing with. The Aviator has the same engine that Ford put in the mustang SVO's in the late 90's and early 00's. It's a 4 cam, 32valve, 4.6L V-8. Some of you may remember that when the SVO first came out it wasn't putting out the horsepower that Ford claimed, so a class action suit followed by the owners. After Ford lost their case they agreed to offer all of the owners of the first year SVO's new extrude honed intakes, etc. etc. so it would make the claimed 320hp. The next year, of which I believe was '00 Car and Driver dynoed 2 different SVO's and (with drive train losses considered) put out exactly what Ford claimed, 320hp.

So in 2003 Lincoln decides to sell the Aviator and they put the SVO engine/what is now in the Mach 1, into the Aviator along with a very efficient 5 speed Automatic. Lincoln rates this engine at 302hp@5750rpm and 300tq@3250rpm which is slightly less than the Mach 1 due to exhaust and intake changes.

Ok, enough with the background, lets get down to the good stuff.

Run #1 was the best and that's the one I've posted. Only 1 mod and that's a drop in K&N air filter.
Run #2, I removed the K&N and put the factory paper air filter back in. There was an across the board loss of 4 hp. So a 4hp gain just for a K&N isn't too bad, certainly not what they claim but most everything is overhyped just to make it look good anyhow.
Run #3, no filter. The computer didn't like that one, it had an across the board loss of 12hp.
Run #4,5,6, reinstalled the K&N and these runs all produced within 1 to 2 hp of Run #1. Very impressive.

Summary:

The Aviator is showing a 24% drive train loss in both hp and tq. According to the guy who dynoed it, he said that's very good considering it has 17" wheels and a fairly large drive-shaft. He chaulked it up to a very efficient 5 speed automatic and Ford being very "honest" with their "claimed" hp numbers these days. He was very impressed with the numbers and can't wait to see what the Titan does with a Volant intake on it because I told him I'd be back after I get it. (yeah, like I'm going to actually recieve my Volant before I die of old age).

Now let's do a direct comparison:

Aviator - 302hp@5750 rpm's. Actual rear wheel hp = 231
Titan - 305hp@4900 rpm's. Actual rear wheel hp = 256

Aviator - 300tq@3250 rpm's. Actual rear wheel tq = 227
Titan - 379tq@3600 rpm's. Actual rear wheel tq = 300

The numbers just don't add up folks for the Titan because it should be putting out somewhere around 233 hp, not 256. If you use the 24% drive train loss the Aviator has with the Titan you come up with 339hp and 396tq.

So what do you all think??? Did I do my homework right??? I hope you all enjoy this because it's always a good time for me to go to the dyno.

One more thing I might add, if you look at the hp with the Aviator it was still up there until the rev limiter kicked in at 6400. And man you can feel the charge to redline with this engine. Also the Aviator has the unique ability to hold the gear you select from idle. So all runs were done in 3rd gear and he was able to engage the dyno at a much lower rpm that what he could with my Titan. Ok I'm done writing, my fingers and brain hurt....

PHOEBISIS · 05-13-2004, 04:49 PM

jetforeman,which one is seat of the pants quicker?I don't know what an Aviator weighs,but most of the midsized SUV are about 4400 lbs,so it should be a close race between the 2.
It certainly looks like Nissan is downplaying the actual hp?Maybe so they can honestly claim 315 hp next year with some very minimal changes.
Thanks,Charlie

Ben99GT · 05-13-2004, 04:51 PM

The Aviator/Marauder/Mach 1 engine is actually not the same as the '99-01 SVT engines. The Aviator/Mach 1 engines have different heads, Navigator cams, 10:1 CR vs. 9.8:1 for the SVTs, are not hand assembled like the SVTs, etc...

The Aviator driveline must really suck, since the 5 speeds Mach 1's make upwards of 280 rwhp and 300 rwtq stock. Even the autos dyno about 260.

JetTech · 05-13-2004, 04:54 PM

Quote:

Originally Posted by PHOEBISIS

jetforeman,which one is seat of the pants quicker?I don't know what an Aviator weighs,but most of the midsized SUV are about 4400 lbs,so it should be a close race between the 2.
It certainly looks like Nissan is downplaying the actual hp?Maybe so they can honestly claim 315 hp next year with some very minimal changes.
Thanks,Charlie

The Titan is a bit quicker but not by much. Lincoln claims 7.6 0-60mph so it's close. Their weights are very similiar as well.

JetTech · 05-13-2004, 04:57 PM

Quote:

Originally Posted by Ben99GT

The Aviator driveline must really suck, since the 5 speeds Mach 1's make upwards of 280 rwhp and 300 rwtq stock. Even the autos dyno about 260.

Of which the mustangs should. Not only does it put out more hp but the driveline components are smaller. The Aviator runs basically larger everything from drive shafts to rotors to compensate for its extra 1500lbs. plus of weight. The Navigator is a totally different beast when it comes to engines. It now has a 5.4L 4 cam, 32 valve V-8, they did that mainly to increase the torque of the engine because hp is basically the same as the 4.6L Aviator engine.

Ben99GT · 05-13-2004, 06:08 PM

Quote:

Originally Posted by JetForeman

Of which the mustangs should. Not only does it put out more hp but the driveline components are smaller. The Aviator runs basically larger everything from drive shafts to rotors to compensate for its extra 1500lbs. plus of weight. The Navigator is a totally different beast when it comes to engines. It now has a 5.4L 4 cam, 32 valve V-8, they did that mainly to increase the torque of the engine because hp is basically the same as the 4.6L Aviator engine.

The Navigator 5.4L and Aviator/Mach1/Maruader 4.6s share the same cam profiles. The previous 4-valve 4.6s ran a different cam profile which sacrifices alot of low end torque compared the the Aviator engine.

Nice choice in vehicles, I really like both the Aviator and the Titan.

JetTech · 05-13-2004, 06:13 PM

Quote:

Originally Posted by Ben99GT

The Navigator 5.4L and Aviator/Mach1/Maruader 4.6s share the same cam profiles. The previous 4-valve 4.6s ran a different cam profile which sacrifices alot of low end torque compared the the Aviator engine.

Nice choice in vehicles, I really like both the Aviator and the Titan.

Thanks Ben, I enjoy dogging the hell out of both of them....

The Aviator could use a DVD system and NAV. I'm spoiled with them in my Titan so I've been cruising ebay and other areas trying to find either one. I may end up going with one of the NAV systems that can be removed from the vehicle. I would like to stay factory though with the DVD. I think the best part of the Aviator is heated AND cooled seats. Talk about cool, literally!!