my x smokin rubber when i first did the BWM

[m8r8j]

it was completley stock, before i had anything on it haha, i figured id post this

http://video.google.com/videosearch?q=explorer+breakstand&sitesearch=#

 

[IZwack]

Just as long as you know of the drivetrain consequences of doing a BWM-induced burnout

 

[ktford]

Loved it
Scotty

 

[Curtis]

Just as long as you know of the drivetrain consequences of doing a BWM-induced burnout

Can you explain a little more? I never thought this mod would hurt anything as Ive considered doing it myself for the occasional burn out as my X has a posi.

I realize there are probably clutches in the transfer case that engage on the signal from the BW, but if that signal never comes the clutch doesn't engage, what harm?

Maybe the clutch is close anyway and will heat up?
isn't it the same as revving the engine with a manual trans in neutral?

Feel free to correct me, Id like to know.

 

[Blanketman]

YEAH
loved it

 

[Sams01XplrSprt]

awesome

 

[aquill1]

My 03 2wd mounty won't even spin the tires...no traction control or dsc or anything either...nice video though!

 

[IZwack]

Can you explain a little more? I never thought this mod would hurt anything as Ive considered doing it myself for the occasional burn out as my X has a posi.

I realize there are probably clutches in the transfer case that engage on the signal from the BW, but if that signal never comes the clutch doesn't engage, what harm?

Maybe the clutch is close anyway and will heat up?
isn't it the same as revving the engine with a manual trans in neutral?

Feel free to correct me, Id like to know.

Sorry I never answered this, I dont think I recieved an email about your reply.

Anyways, yes the clutches are technically always touching even if you do the BWM and disconnect the transfer case connectors. You can verify this by doing the BWM, getting all four tires up in the air and starting the vehicle -- the front tires will spin assuming the front brake pads are free from the brake rotors. There never really is a true 2wd even with the BWM because there is a spring that presses the clutch plates together even if the electromagnet is not engaged. So when a burnout is done, the clutches are rubbed against each other with the fluid in the transfer case as the only lubricant between the non-rotating and rotating clutch discs.

A manual transmission in Neutral is completely different, a manual transmission uses actual gears to engage, not clutch discs. A manaul transmission revved in Neutral will not burn its clutch because there is no speed difference between the engine and the transmission (provided the driver doesnt have the clutch partially in).

 

[Curtis]

Sorry I never answered this, I dont think I recieved an email about your reply.

Anyways, yes the clutches are technically always touching even if you do the BWM and disconnect the transfer case connectors. You can verify this by doing the BWM, getting all four tires up in the air and starting the vehicle -- the front tires will spin assuming the front brake pads are free from the brake rotors. There never really is a true 2wd even with the BWM because there is a spring that presses the clutch plates together even if the electromagnet is not engaged. So when a burnout is done, the clutches are rubbed against each other with the fluid in the transfer case as the only lubricant between the non-rotating and rotating clutch discs.

A manual transmission in Neutral is completely different, a manual transmission uses actual gears to engage, not clutch discs. A manaul transmission revved in Neutral will not burn its clutch because there is no speed difference between the engine and the transmission (provided the driver doesnt have the clutch partially in).

Makes sense to me.
It sounds like if you do the BWM and drive it like a car is intended to drive you shouldn't shorten life span of the t-case very much if any.

but start to abuse it with burnouts, and it could lead to an early failure.

 

[IZwack]

It sounds like if you do the BWM and drive it like a car is intended to drive you shouldn't shorten life span of the t-case very much if any.

but start to abuse it with burnouts, and it could lead to an early failure.

You got it -- thats it exactly.

 

[EMG7895]

how does the vacuum disconnect come into play with this if at all?

 

[nitrousoxidefast]

Do you think donuts would be a problem if I did do the BW mod since the front wheels are moving too? And do you think that it would be a problem to do any kind of manuver like donuts with a car that has 100,000 miles+ on it? And one last question: Is it bad to rev the engine in park on a high mileage car?

 

[Curtis]

Do you think donuts would be a problem if I did do the BW mod since the front wheels are moving too? And do you think that it would be a problem to do any kind of manuver like donuts with a car that has 100,000 miles+ on it? And one last question: Is it bad to rev the engine in park on a high mileage car?

It wont do any good. Your front wheels are not moving that fast in a donut when your rear ones are spinning out at 40-60 mph....
I think the major lesson is to avoid rear wheel spin with the BWM

 

[JCUZ]

Do you think donuts would be a problem if I did do the BW mod since the front wheels are moving too? And do you think that it would be a problem to do any kind of manuver like donuts with a car that has 100,000 miles+ on it? And one last question: Is it bad to rev the engine in park on a high mileage car?

The newer models have a rev limit of 3000 or 3500 rpm - not sure about the older explorers though. But no, there's no harm in giving a car a rev - just don't go past red line.

 

[nitrousoxidefast]

now what happens if your transfer case fails? will your car stop working or can you drive without it? (i dont know much about this as you can tell)

 

[Curtis]

now what happens if your transfer case fails? will your car stop working or can you drive without it? (i dont know much about this as you can tell)

Depends on where the failure is...
If it fails on the input or output to the rear end.. you wont be able to drive it.
Or if it fails on the output to the front wheels you may be able to drive it depending how sever the damage was

Think of the tcase as being full of gears... if one breaks.. its bound to affect others as the pieces go flying..

 

[Charlie]

Is it bad to rev the engine in park on a high mileage car?

Just so long you don't put it in gear while revved up..

 

[nitrousoxidefast]

Just so long you don't put it in gear while revved up..

yea my friends do that in their automatic civics and wonder why they have trans problems. they call them "neutral drops."