Nissan Altima SE V-6 versus Subaru WRX

[flylwsi]

10hp exh on altima? hmm...

the subaru intake is worth 10hp... its a turbo motor getting more air... it will naturally make more hp than a regular intake on a n/a car.

double clutching 3rd to 1st while moving sounds like a recipe for a bomb in any car... im sure i would blow my diff if i did that while i was moving...

[Gonthrax]

He was only going about 15 or 20 mph. He wasn't mashing on it, he was just eating a burger and hadn't downshifted and he needed to be in first.

[flylwsi]

that is really fast for a downshift to 1st from 3rd... even from 2nd to 1st... for me that is tough to do even at like 10mph from 2nd... i cant imagine that being a nice thing to do to a trans, let alone your diff...

[Gonthrax]

Yea but thats what the double clutching is for, you match the RPMs so your syncros don't have to do all the work. that way it just slides into gear with no trouble.

[Morpheus XIII]

Originally posted by Gonthrax
Whats the Altima's engine code? QR35DE?
*Edit*
No those are in Sentra's right? KA35DE?

The Altima 2.5 engine is a QR25DE inline-4. The Altima 3.5 engine is a VQ35DE V-6. The older Altimas used the KA24DE, the same engine in the 240SX.

[Morpheus XIII]

About taking modifications:

The WRX already being turbocharged can easily and cheaply add-on more horsepower with items such as intercoolers, boost controllers. You can find a good 50-100 hp from aftermarket turbo items for no more than $2000.

The Altima 3.5 on the other hand will cost a LOT to turbocharge, but in the long run, can be made to produce as much as 600-1000 hp, much like the other modified 6-cylinder turbocharged Japanese motors. The WRX being a 4-cylinder will have its limitations in how much boost it can take (probably around 500 hp max) even with all the block reinforcements. Of course, this route for the Altima will cost enormously, probably anywhere from $7000-$???, and then the sky's the limit.

As for intake and exhaust, turbocharged cars generally take the reduced backpressure better, while naturally aspirated cars prefer the freed-up breathing.

[F20C]

Originally posted by Gonthrax
He was only going about 15 or 20 mph. He wasn't mashing on it, he was just eating a burger and hadn't downshifted and he needed to be in first.

20 mph is a bit too much to go down to one. No reasons why he needs to do that. 2nd gear is more than adequate to do the job at that speed. There is better reason for downshifting to 1st gear however eating burger and needing to downshift doesn't cut it. I would say that's more human calculating error than mechanical failure.

[F20C]

Originally posted by Morpheus XIII
About taking modifications:

The Altima 3.5 on the other hand will cost a LOT to turbocharge, but in the long run, can be made to produce as much as 600-1000 hp, much like the other modified 6-cylinder turbocharged Japanese motors. The WRX being a 4-cylinder will have its limitations in how much boost it can take (probably around 500 hp max) even with all the block reinforcements. Of course, this route for the Altima will cost enormously, probably anywhere from $7000-$???, and then the sky's the limit.

I heard stock internals are probaly good for 400 ps.

[Morpheus XIII]

Originally posted by F20C
I heard stock internals are probaly good for 400 ps.

Likely. If the next GT-R uses a turbo VQ35, it is supposed to pump around 450hp. Not too shabby at all. If this happens, then the engine should be able to get into the quad digit horsepower level with block strengthenings and higher boost, as I mentioned earlier.

[Gonthrax]

Originally posted by F20C


20 mph is a bit too much to go down to one.

Your probly right, I donno what RPM you would be at in first doin 15 or so in a rexy.

[F20C]

For my car I wouldn't go back down to 1st gear if I am past 3000 rpm in the 2nd gear. There is only very few case where I needed to shift down to first at higher speeds. It has something to do with traction when you fish tail.

[Gonthrax]

Ic ic.
By the way, how do you like your S4? I have been wanting to drive one for a while now.

[F20C]

A4's getting dated fast. Need to start looking for replacement soon.

[Gonthrax]

Originally posted by F20C
A4's getting dated fast. Need to start looking for replacement soon.

really? What are you considering?

[F20C]

Originally posted by Gonthrax

really? What are you considering?

The time is not right since most of the import models are just starting to arrive. Probaly wait another year to change the car. Cars on mind right now are RX-8, Lancer Evolution, WRX STi and next generation S4.