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General E46 Forum
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Old 03-30-2013, 02:01 PM   #21
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Is OP worried about the 325 cooling system not sufficient for the 3.0L engine?
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Old 03-30-2013, 02:11 PM   #22
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Is OP worried about the 325 cooling system not sufficient for the 3.0L engine?
What's different? Same cooling system, no?
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Old 03-30-2013, 02:19 PM   #23
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How ridiculous. These cars are designed for much greater speeds than 90 mph.

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Old 03-30-2013, 02:32 PM   #24
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What's different? Same cooling system, no?

Dunno.

The water pump and such comes with the 3.0L engine. But radiator, fan and other auxiliary cooling parts are still for the 325. No?
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Old 03-30-2013, 02:33 PM   #25
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Our cars are meant for highway driving. It will handle it with no issues.
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Old 03-30-2013, 03:05 PM   #26
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First, what was the original? Mine is a 2.93 so 3 isn't a big change. If you're an automatic, what ratio did you have originally?

If you're increasing the ratio (from 2.93-3) you'll be using a little more gas. Also, make sure you use proper oil.

For those of you who said the car is made to drive out of the factory and onto the Autobahn, you're right. But, they suggest keeping it below a certain speed (I think it's 100 mph) for the first few hundred miles...something like that.
.
Anyway, it's made to drive on the autobahn, and obviously can go on a race track, but you're obviously also asking more of the engine at 4K than at 3K...you'll pay the price in gas, oil, and some in wear. The car didn't leave the factory with a different ratio diff...it left with the diff on it. I love my 2.93...0-39 in first, up to 69 in 2nd, haven't redlined in third yet. Don't know why you guys change the ratio? Actually, I do, but I don't understand why you'd want to.

And, if my understanding is right, because you want to dragrace, you're making a mistake there too. I'm on the pedal while you're going through 3 shifts...who's going to win, you think...all other things being equal?

Every way I look at it, I don't get it, but whatever...
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Old 03-30-2013, 03:31 PM   #27
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Radiator is the same on all E46
water pump same from 320 - 330
expansion tank / hoses same from 320-330

it will be fine
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Old 03-30-2013, 03:55 PM   #28
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Quote:
Originally Posted by dmax View Post
First, what was the original? Mine is a 2.93 so 3 isn't a big change. If you're an automatic, what ratio did you have originally?

If you're increasing the ratio (from 2.93-3) you'll be using a little more gas. Also, make sure you use proper oil.

For those of you who said the car is made to drive out of the factory and onto the Autobahn, you're right. But, they suggest keeping it below a certain speed (I think it's 100 mph) for the first few hundred miles...something like that.
.
Anyway, it's made to drive on the autobahn, and obviously can go on a race track, but you're obviously also asking more of the engine at 4K than at 3K...you'll pay the price in gas, oil, and some in wear. The car didn't leave the factory with a different ratio diff...it left with the diff on it. I love my 2.93...0-39 in first, up to 69 in 2nd, haven't redlined in third yet. Don't know why you guys change the ratio? Actually, I do, but I don't understand why you'd want to.

And, if my understanding is right, because you want to dragrace, you're making a mistake there too. I'm on the pedal while you're going through 3 shifts...who's going to win, you think...all other things being equal?

Every way I look at it, I don't get it, but whatever...
Well said, this is more evidence of your philosophical ways.
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Old 03-30-2013, 03:59 PM   #29
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its a bmw made for autobahn in germany, why ask a dumb question like that lol
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Old 03-30-2013, 04:16 PM   #30
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Shoulda got a six speed! My car is plenty fast enough to push you back into the seat and feel like you're getting there. Short of a drag racer, it's fast.
That 3 liter kicks.
I think it's fast too. But relative to what the performance specs are of cars in it's same class today.... not reaaally.
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Old 03-30-2013, 04:30 PM   #31
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the only reason i asked was due to a thread i read and a guy saying the bmw's in america weren't made for the autobahn and cant handle holding 100 for long periods of time. Last night i hit 140 in mine, its a 5-speed. Doesn't seem like it will do much more than that unless i had 6th gear.
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Old 03-30-2013, 04:30 PM   #32
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This is almost like asking if it's appropriate to tow a 4,000 pound trailer with a pick-up truck. Yes, it's what it's built for.
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Old 03-30-2013, 04:33 PM   #33
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Read over this website, it will tell you what your car can do. According to it, my car can hit 161.

http://www.bokchoys.com/differential/Where.htm
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Old 03-30-2013, 04:37 PM   #34
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oh and my valentine 1 radar detector helps me out
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Old 03-30-2013, 04:37 PM   #35
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the only reason i asked was due to a thread i read and a guy saying the bmw's in america weren't made for the autobahn and cant handle holding 100 for long periods of time. Last night i hit 140 in mine, its a 5-speed. Doesn't seem like it will do much more than that unless i had 6th gear.
Sixth is overdrive for economy.
Can go faster in my car in 5th, same as you have. That is direct drive 1:1

Rolled my car (USA version) out of the delivery center in Munich when new and within a few miles was on the Autobahn doing an easy 100mph. Can do that for hours.

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Old 03-30-2013, 04:39 PM   #36
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This is almost like asking if it's appropriate to tow a 4,000 pound trailer with a pick-up truck. Yes, it's what it's built for.
well since i'm on my 3rd engine in 4 months i'd like to ask questions. first one was previous owners fault overheat, second engine has 70k threw a rod 300 miles into it and this engine has been fine for 2000 miles except if i let it sit idling for more than 5 minutes in one place the engine will start acting rough and shacking, if i put it in gear it will go but it acts like its getting no gas, restart and it drives perfect until it sits in one spot for too long..
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Old 03-30-2013, 04:56 PM   #37
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if i let it sit idling for more than 5 minutes in one place the engine will start acting rough and shacking, if i put it in gear it will go but it acts like its getting no gas, restart and it drives perfect until it sits in one spot for too long..
Sounds like we'd learn something if you pulled codes.
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Old 03-30-2013, 05:03 PM   #38
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Quote:
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the only reason i asked was due to a thread i read and a guy saying the bmw's in america weren't made for the autobahn and cant handle holding 100 for long periods of time. Last night i hit 140 in mine, its a 5-speed. Doesn't seem like it will do much more than that unless i had 6th gear.
Quote:
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oh and my valentine 1 radar detector helps me out
Quote:
Originally Posted by metlic53 View Post
well since i'm on my 3rd engine in 4 months i'd like to ask questions. first one was previous owners fault overheat, second engine has 70k threw a rod 300 miles into it and this engine has been fine for 2000 miles except if i let it sit idling for more than 5 minutes in one place the engine will start acting rough and shacking, if i put it in gear it will go but it acts like its getting no gas, restart and it drives perfect until it sits in one spot for too long..
So, I don't understand how a V1 protects you from a blow out at 140 mph. Nor those around you on public roads. I don't understand if you're thinking about the forces involved in going 140mph and then stopping in a few feet because of a tree...these are, in case you missed that day in Physics class, death guaranteeing forces. Severe.

I don't understand how you've had such bad luck with engines, either, but this might be why. To go this speed your car needs to be in top trim, and given that you asked this question, I'm thinking that you either need a close friend as mechanic who keeps your car in race condition, or that you need to slow down, read Fanatics until you puke, and stop doing stuff like this, or you will not be around for long.

...and yes, I'm assuming you weren't on a local track where there were ambulances standing by.
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Old 03-30-2013, 06:56 PM   #39
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I'm shaking my head right now.

So the OP is asking if his engine (which isn't running right or he wouldn't have the idling issue) can handle getting beat on at high rpm. I think you can figure this one out yourself man. You're on your 3rd engine which has issues also and you're out racing it. Wow, you must not be paying for the car or any of the repairs yourself because otherwise I don't understand how any normal, halfway intelligent person would do this. I'm gonna guess OP is 17 to 21 years old and his car was given to him and someone else pays for repairs when it breaks.
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Old 03-31-2013, 01:25 AM   #40
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yall are funny and yes i am 21 years old and i get paid over 6 figures a year at a chemical company so i pay for everything.
The guy that swapped the engine said i had 10 codes for mis fire in all the cylinders, misfire at low fuel, he said it all leads to the Mass Air Flow sensor, other than that it is in as you say "Top Trim" condition and has had everything replace including the cooling system, tranny and clutch, brakes new tires everything. He told me the MAF will only mess with it occasionally when in traffic which it does but other than that, changing the MAF i wont notice ANYTHING. Thats just what he has told me.
When i speed in my BMW or my 2002 SS Camaro with headwork, built trans, stall, HP Torque Converter, 150 Shot of NOS, Forge Pistons Cam, Racing fuel its either at the drag strip or a circle track or at 3AM when not a single person is on the freeway and if i see someone i slow down., (yes i have got on a circle track in the BMW and topped it out a few times, i know people).
I'm not trying to sound like an arrogant young teenager who thinks he knows it all but dang who REALLY cares.
Here comes the "where do you live so i can stay off the roads"
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