PDA

View Full Version : My car seems to perform better in the cold!


BMW_M52_M20
12-09-2002, 09:02 PM
Obviously once warm. I guess it is probably the CAI intake. I did some 0-100 k/mh times yesterday. My car was running 7.1 seconds in the summer with two people and half a tank of gas. I took it out yesterday with my bud, an averaged a time of 6.8 seconds! I was impressed.
Jay

330DTM
12-09-2002, 09:14 PM
Heh yeah because you're engine isn't experiencing heat soak in which it does in the summer afternoon. Just like when you drive it in a cool night in july/august, the car feels more responsive.

Pedro91'318i
12-09-2002, 11:47 PM
i dont like to drive my car hard in the winter cuz i cracked my radiator last yr doing that. how cold does it get in your area??

swisherchico
12-09-2002, 11:53 PM
COLD air=more dense=more air in cylinders=MORE POWER

Jon@Bimmersport
12-10-2002, 12:01 AM
its also because your intake will draw more cold air into the engine than the stock airbox

mkgino
12-10-2002, 12:11 AM
Originally posted by Jays_Arctic323is
Obviously once warm. I guess it is probably the CAI intake. I did some 0-100 k/mh times yesterday. My car was running 7.1 seconds in the summer with two people and half a tank of gas. I took it out yesterday with my bud, an averaged a time of 6.8 seconds! I was impressed.
Jay

Hey, I really want to race you. I mean not some dangerous place like where I raced Rolled out, but somewhere better, like north of woodbridge or something, I dont know. I know that the 323 is one of the most underrated bmw's, so it would really come down to the driver!!

Dave 325i
12-10-2002, 03:17 AM
i dont like to drive my car hard in the winter cuz i cracked my radiator last yr doing that. how cold does it get in your area??

Did you have the proper antifreeze / water mix your cooling system?

I'd say the coldest it really gets is -20*C, but usually more like
-7*C.

Spartiatis
12-10-2002, 06:37 AM
I think that the 328is would win in a race against a 323is. On the other hand, a 323is will beat a 325is on the highway.

djcontra
12-10-2002, 01:52 PM
Originally posted by Pedro91'318i
i dont like to drive my car hard in the winter cuz i cracked my radiator last yr doing that. how cold does it get in your area??

i blew apart a few of my coolant hoses just a month or so ago when it first got cold out here in toronto. Try not to goose the car too much in the winter time...well...not unless you've let it warm up at least (my fault for not letting mine warm up before racing around)

Jase
12-10-2002, 03:38 PM
Anyone have the hp and torque specs on these cars
318is
323is
320i
325is
328is

Jase
12-10-2002, 03:41 PM
considering I heard a 323 is quicker than a 325.
also I think in the cold air helps the air fuel mixture

mkgino
12-10-2002, 03:50 PM
Originally posted by Jase
Anyone have the hp and torque specs on these cars
318is
323is
320i
325is
328is

318is - 140hp
323is - 174hp
320i - 150hp
325is - 189hp
328is - 190hp

These numbers are for E36 models

Spartiatis
12-10-2002, 05:58 PM
The 325is is faster off the line. The 323is is faster on the highway.

Jon@Bimmersport
12-10-2002, 08:20 PM
Originally posted by Spartiatis
The 325is is faster off the line. The 323is is faster on the highway.

why? the gearing? but i doubt that it'll have the power to reach the speed faster than the 325is can

mkgino
12-10-2002, 08:30 PM
Well the 323 has more torque, but less hp. You know I really cant see how it could be faster than the 325

Jon@Bimmersport
12-10-2002, 08:31 PM
Originally posted by mkgino
Well the 323 has more torque, but less hp. You know I really cant see how it could be faster than the 325

neither do i, even if it had 10lbs more of torque, the 325 still has M3 diff, with the 25hp more

mkgino
12-10-2002, 08:32 PM
Originally posted by E46_lover


neither do i, even if it had 10lbs more of torque, the 325 still has M3 diff, with the 25hp more

What M3 diff man?

Autotechnica
12-11-2002, 02:48 PM
You know looking at power curves is quite important. Only amatures will look at peak HP and decide which car is faster. The most important thing is how much power you get at what RPM (especially the mid-high end, not just high end). And in most cases 10lbs+ft of torque at lower RPMS (which goes for most BMW's) around 3500-4500RPM is more important than say an extra 25HP at 6000RPM. Remember that it's easy to sacrafise torque for HP, but not the other way around.

Bryan

BMW_M52_M20
12-11-2002, 10:42 PM
Just to let you know John, the 323is has 168bhp (but maybe with the intake I am above 170bhp).
Yeah, I have raced a 325is, and mine is a bit faster (more torque advanced timing), I have also raced a 328is in the summer, and although very close, the 328is was a bit faster.

I have to agree, the 323is is very underated, next maxbimmer meet, e46_lover and Mk, you can drive my car if you like, I think you will be quite surprised. When I tell people the power of my car, they don't usually beleive me till they have a go.

Anyway
Cheers
Jay