ALL WHEEL DRIVE??????
- Thread starter ready961
- Start date
bezerk
New member
let's say a car has 400HP, in 2wd it tries to put 200HP at both of the rear wheels.
if you don't have a differential lock, 1 wheel starts to spin, causing a 400HP wheel spin.
if you have 400HP in a 4wd car, it tries to put 100HP at each wheel of the vehicle..... there is something more to it, but this is just a simple " How it works"
if you don't have a differential lock, 1 wheel starts to spin, causing a 400HP wheel spin.
if you have 400HP in a 4wd car, it tries to put 100HP at each wheel of the vehicle..... there is something more to it, but this is just a simple " How it works"
J_SULLIVAN
A&P slave monkey
No spinning on take-off dry or wet...
If that was in reference to the Sy's and Ty's, they were not made for mileage...
Deanzsyclone
New member
I believe we missed the point to his question, if I am correct what he is trying to say, or ask, is what is the benifits to all wheel drive OVER 4 wheel drive?
I hope I got it right.
Dean
I hope I got it right.
Dean
J_SULLIVAN
A&P slave monkey
Then my question is why is that being asked in a "SY-TY" forum??? Is he planning on going to an auto-4WD (drivetrain) in his Sy or Ty if he even has one? Or maybe getting rid of the all-wheel drive system all together?
Deanzsyclone
New member
Syclone 697 said:
I believe you may be over thinking this, I'm assuming he is just plain old currious!
Either way, I to wonder what the difference/benifits are between the two, (AWD and 4WD)
Matthew Little
New member
4wd
4wd
2wd losts of big smokey burnouts, traction probs at launch and up in power band if making alot of hp. 4wd 65/rear 35/front all the time,but most 4wd's use open diffs,so if oppisite frnt/rear wheels spin,lose of traction. Now awd's like ours use a viscious coupler that transfer power frnt/rear depending on traction loss, and can be used on solid surfaces because it is not diverting the same amuout of power all the time. hence the term (smart track) on the bravada. My ty goes better in the snow than my jeep cj. If the ty starts to lose traction it is constantly changing the amount of power to the frnt/rear, where the jeep is putting the same out no matter if it starts spinning or not.
With that said, 2wd is alot simpler setup(less to break) our trucks also have a speed governed posi in the rear.
Hope this helps.
4wd
2wd losts of big smokey burnouts, traction probs at launch and up in power band if making alot of hp. 4wd 65/rear 35/front all the time,but most 4wd's use open diffs,so if oppisite frnt/rear wheels spin,lose of traction. Now awd's like ours use a viscious coupler that transfer power frnt/rear depending on traction loss, and can be used on solid surfaces because it is not diverting the same amuout of power all the time. hence the term (smart track) on the bravada. My ty goes better in the snow than my jeep cj. If the ty starts to lose traction it is constantly changing the amount of power to the frnt/rear, where the jeep is putting the same out no matter if it starts spinning or not.
With that said, 2wd is alot simpler setup(less to break) our trucks also have a speed governed posi in the rear.
Hope this helps.
Re: 4wd
Re: 4wd
Is this unit part of the trans case or front end? I'm thinking of converting a 4wd to an Awd. What parts would I need to change? Is the olds smart track the same as the typhoon? I heard that the awd astro van had the same front end.
Thanks Matthew.
Re: 4wd
Matthew Little said:
Is this unit part of the trans case or front end? I'm thinking of converting a 4wd to an Awd. What parts would I need to change? Is the olds smart track the same as the typhoon? I heard that the awd astro van had the same front end.
Thanks Matthew.
Lynn D. Brown
New member
Matthew,
Not sure why U would want to go from 4WD to AWD ? I can see the going the other way. It would be nice to be able to disengage the AWD at highway speeds 4 mileage, or even at the track 4 more Top End.
I looked at doing it when I had to get a junkie S-10 Front Diff. to get some parts to repair my stock Ty Diff. But it's a whole lotta work, because U gotta put in the vacuum shifting mechanism and the Trans Case and Frt Pass axle are different.
If U really want to do it, all U have to do is get the SyTY Pass front axle, which is different and remove the shift In/Out gear in the Front Diff. U might be able to keep the S-10/15 Trans case.
Not sure why U would want to go from 4WD to AWD ? I can see the going the other way. It would be nice to be able to disengage the AWD at highway speeds 4 mileage, or even at the track 4 more Top End.
I looked at doing it when I had to get a junkie S-10 Front Diff. to get some parts to repair my stock Ty Diff. But it's a whole lotta work, because U gotta put in the vacuum shifting mechanism and the Trans Case and Frt Pass axle are different.
If U really want to do it, all U have to do is get the SyTY Pass front axle, which is different and remove the shift In/Out gear in the Front Diff. U might be able to keep the S-10/15 Trans case.
Matthew Little
New member
awd
awd
I don't want to go 4wd,just helping explain for those that may not know the diffs.
The viscous coupler is in the transfer case on the awd's, The front end on our trucks just don't have the shifter on the front axle right tube, so it turns all the time. My buddy has a s10 blazer that we are going to build a clone out of and we are going to put the awd tranfer case in, but leave the front axle so it can be disengauged. I can't say for sure, but I have been told all the awd(bravada,astro) parts will fit on ours. I don't think the astros use the same bolt pattern wheels though.
awd
I don't want to go 4wd,just helping explain for those that may not know the diffs.
The viscous coupler is in the transfer case on the awd's, The front end on our trucks just don't have the shifter on the front axle right tube, so it turns all the time. My buddy has a s10 blazer that we are going to build a clone out of and we are going to put the awd tranfer case in, but leave the front axle so it can be disengauged. I can't say for sure, but I have been told all the awd(bravada,astro) parts will fit on ours. I don't think the astros use the same bolt pattern wheels though.
Lynn D. Brown
New member
AWD vs 4WD
AWD vs 4WD
Just a standard rear end, altho' kinda smallish. No viscous coupler.
AWD vs 4WD
Just a standard rear end, altho' kinda smallish. No viscous coupler.
Matthew Little
New member
awd
awd
If I understand the question, the viciuos coupler is in the transfer case, thats what makes it diff than a s10 blazer 4x4 xfer case. open diff in the front and speed governed posi in the rear(at least thats what in mine).
Ohterwise yes you can use the awd xfer case in the 4x4 setup, you just have to make the front end lock and unlock. I don't know if it is vacum or electric, haven't ever really looked at it that close. I would think it was a vacum switch on the 4x4 shifter.
awd
If I understand the question, the viciuos coupler is in the transfer case, thats what makes it diff than a s10 blazer 4x4 xfer case. open diff in the front and speed governed posi in the rear(at least thats what in mine).
Ohterwise yes you can use the awd xfer case in the 4x4 setup, you just have to make the front end lock and unlock. I don't know if it is vacum or electric, haven't ever really looked at it that close. I would think it was a vacum switch on the 4x4 shifter.
There is a lot more to this than just gas milage. I heard a long time ago that the diff between awd and standard two wheel drive was only about 4% less milage. Even less between awd and 4wd since 4wd still has front diff, tranfer case, cv's, etc.
Now if performance is the question then awd is better. When 4wd is engaged it a solid lock front and rear. This means if you are on dry pavement you can get "axle windup" because no two tires are exactly the same diameter. Thats why awd has a viscious coupler. It's like the difference between posi and a spool in the rear diff. You go around a corner with a spool and the rear chatters because the two wheels are going a different speed, but in 4wd that would bind up u joints and shafts in the system.
4wd works on snow, dirt, and mud because the tires can slip enough. I had an s-10 blazer 4wd and came down a mountain pass from skiing one time in 4wd on snow and when it turned to wet I couldn't get the 4wd to disengage. I had to pull over and back up because even wet pavement put to much pressure on to get it to unlock from 4wd.
The advantage to 4wd is off road because if you really need power to a front wheel it won't have the viscious coupler slipping power away and you also have 4lo.
The advantage to awd is it will work all the time. Wet or dry it doesn't care. There may be some way to make a custom transfer case to race in 4wd and disengage after launch, but i doubt it. I am sure it would not work with a stock transfer case. It would not disengage under wot and would surely damage it.
Now if performance is the question then awd is better. When 4wd is engaged it a solid lock front and rear. This means if you are on dry pavement you can get "axle windup" because no two tires are exactly the same diameter. Thats why awd has a viscious coupler. It's like the difference between posi and a spool in the rear diff. You go around a corner with a spool and the rear chatters because the two wheels are going a different speed, but in 4wd that would bind up u joints and shafts in the system.
4wd works on snow, dirt, and mud because the tires can slip enough. I had an s-10 blazer 4wd and came down a mountain pass from skiing one time in 4wd on snow and when it turned to wet I couldn't get the 4wd to disengage. I had to pull over and back up because even wet pavement put to much pressure on to get it to unlock from 4wd.
The advantage to 4wd is off road because if you really need power to a front wheel it won't have the viscious coupler slipping power away and you also have 4lo.
The advantage to awd is it will work all the time. Wet or dry it doesn't care. There may be some way to make a custom transfer case to race in 4wd and disengage after launch, but i doubt it. I am sure it would not work with a stock transfer case. It would not disengage under wot and would surely damage it.
Lynn D. Brown
New member
There may be some way to make a custom transfer case to race in 4wd and disengage after launch, but i doubt it.
What's that Japanese Supercar that has a disconnectible AWD that let's U do this ? A Subaru or Nissan ? Skyliner ?
What's that Japanese Supercar that has a disconnectible AWD that let's U do this ? A Subaru or Nissan ? Skyliner ?