CarandDriver got 7.0, but their's had 17 in wheels and a sunroof, so if you didn't order the sunroof and had the 16s I wonder if it would be more like 6.8 or so.

 

BMW´s "official" MCS times are 6.9 secs.

 

Also, assuming my Mini did 6.8 or 6.9 stock, how fast would it be with an Odyssey battery(20 lbs saved) and a K & N air filter?

 

I'd wager to say those mods wouldn't make any perceptiable difference.

The wheel weight makes a difference, because it is rotating unsprung mass. The battery just reduces the weight of the car by less than 1%.

If you want to improve your 0-60 without much difference from stock, go out to a drag strip and work on your launches.

 

>>I'd wager to say those mods wouldn't make any perceptiable difference.
>>
>>The wheel weight makes a difference, because it is rotating unsprung mass. The battery just reduces the weight of the car by less than 1%.
>>

Ok, but would my zero to 60 improve without the heavy sunroof? How much In your opinion?

 

>>Ok, but would my zero to 60 improve without the heavy sunroof? How much In your opinion?
>>

The sunroof weights ~80lbs, so again that really isn't much and probably won't make much difference in 0-60 times. However, that weight savings could make some difference on a road course or auto-xing due to its location so high up on the car.

 

80 lbs is quite a bit. That must bring it down to 6.8 or so!

 

No, it really doesn't. On the wheels the difference would be huge but 80lbs out of 2600lbs? MAYBE a hundredth or two...at best.

 

I don't mean to be rude, but I think you're wrong. Does anybody else have an opinion on this?

 

Assuming an MCS weighs about 2680 lbs without a sunroof, it has a power to weight ratio of 16.44.

If it weights 2760 pounds with a sunroof, then it has a power to weight ratio of 16.93.

To balance the power to weight ratio, the car with the sunroof would need 168 hp.

Granted, that's only 5 hp, but I think that the difference would be more than a few hundreths, maybe dropping the 0 to 60 down from 7.0 to 6.9 or 6.8.

The sunroof is nice and big though.

:smile:

 

I usually take a dump before doing 0-60 time trials in hopes for a better time.

 

Best, cheapest, and easiest way to lose weight for a 0-60 run is to run with a nearly empty tank of gas.

A full tank weighs a LOT !

 

Andrewsky, I think you're nit-picking a bit too much. Your 0-60 times are never going to be that consistent day-to-day to bother with hypothesizing about a tenth here or there. They'll vary upon temperature, humidity, even your mood will effect your launch and shifting.

 

>>Also, assuming my Mini did 6.8 or 6.9 stock, how fast would it be with an Odyssey battery(20 lbs saved) and a K & N air filter?

For a reality check:
Please do go to a track in your area and with a stock MCS try to get a 0-60 time of under 7 seconds. It isn't easy. It takes quite a bit of practice and very smooth technique to do it and be clean off the start and keep the time low. The margin of error of the driver at the start more than makes up for 100 pounds of unsprung weight that is lost.

Only by drastically loosing lots of weight and by loosing more importantly weight in the wheels could you get a small drop in 0-60 times but again only with the right technique and clean start.

Human reaction times will make a huge difference and it is not just the reaction to the start lights but the coordination of the throttle and shifting gears plus keeping traction and minimizing wheel spin all at the same time.

Gasoline is roughly 8 pounds per gallon so go lightly on the gas because there is some 100 pounds of weight right there slooshing around.

The K&N filter isn't going to amount to much and the 20 pounds is too little to measure the difference. Not having the sunroof is a plus but if you think weight is the key then look at all the drivers of the best 0-60 times of the day at the track and you will see that unlike how jockeys are really small and light, these drivers are physically quite a mix and all know how to drive a good 0-60 time.

Also-BMW's 0-60 time of 6.9 seconds is with a professional driver on a good clean track with excellent cool conditions. Just the sort of environment to do a good time compared to real conditions in your local area. BMW doesn't want to advertise something untrue but at the same time it isn't going to make the car go faster than there power to do so. Even if you add power to the point of a JCW kit on an MCS which is 200 HP what is the advertised 0-62 mph time? Maybe 6.7 seconds if that fast. Very small gains to be had indeed. Much smoother performance though.

Here is a graph of an experienced MCS owner with full mods and a record of a good 1/4th mile run of 14.7 seconds
take a look at the 0-60 and it is about 6.5 to 6.8 seconds (hard to be truely accurate).
http://www.ross-tech.net/andy/mini/d...03rpmspeed.png
PM him if you have questions at:
andy@ross-tech.com

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ALOHA