cloneman315
Active member
is it possible for the truck to be faster with the clutch bad or fully locked up?I thought maybe it would work like a spool etc with it locked up.Mine is bad I had to change the case and the truck go slower lol
faster with bad viscous clutch?
- Thread starter cloneman315
- Start date
cloneman315
Active member
Re: faster with bad viscous clutch?
I didnt I am just curious if it might hurt time etc etc with the clutch working/.
I didnt I am just curious if it might hurt time etc etc with the clutch working/.
cloneman315
Active member
Re: faster with bad viscous clutch?
or maybe it will go faster with the clutch working right,just was wondering.
or maybe it will go faster with the clutch working right,just was wondering.
Robert Lone
MUTANT
Re: faster with bad viscous clutch?
I helped a member remove his prop-shaft and he said it was wicked w/o the prop-shaft. Nearly stock truck and normal driving.
By doing away w/ the front drive, you have reduced the parisitic drag on the driveline and incresed HP getting to the ground.
So yes, a bad t-case can make the truck quicker if traction isn't an issue.
JMHO...
I helped a member remove his prop-shaft and he said it was wicked w/o the prop-shaft. Nearly stock truck and normal driving.
By doing away w/ the front drive, you have reduced the parisitic drag on the driveline and incresed HP getting to the ground.
So yes, a bad t-case can make the truck quicker if traction isn't an issue.
JMHO...
AWDcameoLSX
Member
Re: faster with bad viscous clutch?
A bad viscous clutch would make it always engaged just based on how it works. It is now more like a standard 4x4 transfer case so. It could possibly be helping you have the tires slip less on takeoff but I am not so sure about that. Should not have affect on speed alone for regular driving. Should just make turns more of a bear.
A bad viscous clutch would make it always engaged just based on how it works. It is now more like a standard 4x4 transfer case so. It could possibly be helping you have the tires slip less on takeoff but I am not so sure about that. Should not have affect on speed alone for regular driving. Should just make turns more of a bear.
autoaddictions
Active member
Re: faster with bad viscous clutch?
I disagre . Yes without a front prop shaft and some slicks in the back I think you could run a better ET. However with a locked up viscous (spool) It be very hard to heat the tires before a pass thus making your 60ft slower. As some of you know a good 60 ft makes a big differance at the big end of the track.
I disagre . Yes without a front prop shaft and some slicks in the back I think you could run a better ET. However with a locked up viscous (spool) It be very hard to heat the tires before a pass thus making your 60ft slower. As some of you know a good 60 ft makes a big differance at the big end of the track.
AWDcameoLSX
Member
Re: faster with bad viscous clutch?
I assumed he was talking about daily driving not race track, but i agree with tires getting heated up helping the ET.
I assumed he was talking about daily driving not race track, but i agree with tires getting heated up helping the ET.
TYTILIDIE
METH HEAD
Re: faster with bad viscous clutch?
I can give you guys some good solid info on this. First off, if the VC is locked, you are always in AWD. I will tell you do NOT play with a locked clutch. I don't care if you gained a second, it is VERY DANGEROUS!!!!! Your front drive train will bind over time and will snap your CV shafts. This happened to me. I went through 6 passenger side CV shafts before I listened to the one person who was actually right about it and swapped VC's. One time, it snapped when I was doing about 100mph, I almost wiped out the car next to me but thanks to my quick reflexes and deep experience with piloting hoopties on the brink of failure, I pulled through just fine. It got my hear rate going though. If you think this is something you want to "PLAY" with I suggest a playground.:2cents:
I can give you guys some good solid info on this. First off, if the VC is locked, you are always in AWD. I will tell you do NOT play with a locked clutch. I don't care if you gained a second, it is VERY DANGEROUS!!!!! Your front drive train will bind over time and will snap your CV shafts. This happened to me. I went through 6 passenger side CV shafts before I listened to the one person who was actually right about it and swapped VC's. One time, it snapped when I was doing about 100mph, I almost wiped out the car next to me but thanks to my quick reflexes and deep experience with piloting hoopties on the brink of failure, I pulled through just fine. It got my hear rate going though. If you think this is something you want to "PLAY" with I suggest a playground.:2cents:
cloneman315
Active member
Re: faster with bad viscous clutch?
well maybe I will just keep my old bad transfer case for track days lol,my truck was 60ft very well hate to lose that
well maybe I will just keep my old bad transfer case for track days lol,my truck was 60ft very well hate to lose that
cloneman315
Active member
Re: faster with bad viscous clutch?
i still would like some opinions on this.
i still would like some opinions on this.
TYTILIDIE
METH HEAD
Re: faster with bad viscous clutch?
I just gave you FACTS. Only way you will go faster is if the VC was not engaged. I have driven my truck several times with no front propshaft and it doesn't feel much faster at all, it gets squirrely super quick and is ultimately unproductive. I think some guys did some testing a few years back and the #'s weren't there. They gained nothing except a little mph but lost close to a second e.t. and suffered severely in the 60'. IMO, if you really want to do what you are saying, just go with 2wd and slicks. Otherwise, you are wasting your time. Your only other option is to get a hold of Waller and he can make you a front diff that disengages after launch. Even that you cant drive around disengaged because it WILL tear up the VC.
I just gave you FACTS. Only way you will go faster is if the VC was not engaged. I have driven my truck several times with no front propshaft and it doesn't feel much faster at all, it gets squirrely super quick and is ultimately unproductive. I think some guys did some testing a few years back and the #'s weren't there. They gained nothing except a little mph but lost close to a second e.t. and suffered severely in the 60'. IMO, if you really want to do what you are saying, just go with 2wd and slicks. Otherwise, you are wasting your time. Your only other option is to get a hold of Waller and he can make you a front diff that disengages after launch. Even that you cant drive around disengaged because it WILL tear up the VC.
cloneman315
Active member
Re: faster with bad viscous clutch?
I am talking about et etc,not just speed,what I am talking about is like 60ft time etcetc
I am talking about et etc,not just speed,what I am talking about is like 60ft time etcetc
SloGN
9Sec Alky V6
Re: faster with bad viscous clutch?
the AWd will help the bottom end but hurts the mph on the big end. It's all about the et not the mph.
Think about it if you remove the propshaft your still turning the front cv axle's and diff also the transfer case is still being powered so the only thing that you have removed from taking any power is the propshaft. the small propshaft since it has a short distance don't require much torque to turn.
A bad VC i think will require more power to move the truck due to the small diffrence in the front and rear end speeds so with it fully locked it's binding all the time it takes power to over come the binding. So a good VC will take less power by allowing the front and rear end not to be in a bind.
The best way to tell this is to dyno the truck with a AWD dyno with a bad case and with a good case.
there is a awd dyno dynamics unit in concord @ BRE performance.
the AWd will help the bottom end but hurts the mph on the big end. It's all about the et not the mph.
Think about it if you remove the propshaft your still turning the front cv axle's and diff also the transfer case is still being powered so the only thing that you have removed from taking any power is the propshaft. the small propshaft since it has a short distance don't require much torque to turn.
A bad VC i think will require more power to move the truck due to the small diffrence in the front and rear end speeds so with it fully locked it's binding all the time it takes power to over come the binding. So a good VC will take less power by allowing the front and rear end not to be in a bind.
The best way to tell this is to dyno the truck with a AWD dyno with a bad case and with a good case.
there is a awd dyno dynamics unit in concord @ BRE performance.
TYTILIDIE
METH HEAD
Re: faster with bad viscous clutch?
I know exactly what you are talking about. What I am trying to tell you is that you can explode your CV shaft with a locked VC and not to do it. When I say I went through 6 CV shafts, 4 of them exploded at 70mph the morning they were installed. I was surprised I made it as far as I did on the one that bowed out at 100. If you think your e.t. will be at a speed less than 70 I say go for it, but we know that wont be the case. This has actually been gone over several times, I am surprised for as long as you have been around that you haven't seen these discussions. Only way you will get the top end you are looking for is to change gear ratios, make an unlocking front diff, 2wd or a 4wd transfer case.
I know exactly what you are talking about. What I am trying to tell you is that you can explode your CV shaft with a locked VC and not to do it. When I say I went through 6 CV shafts, 4 of them exploded at 70mph the morning they were installed. I was surprised I made it as far as I did on the one that bowed out at 100. If you think your e.t. will be at a speed less than 70 I say go for it, but we know that wont be the case. This has actually been gone over several times, I am surprised for as long as you have been around that you haven't seen these discussions. Only way you will get the top end you are looking for is to change gear ratios, make an unlocking front diff, 2wd or a 4wd transfer case.
cloneman315
Active member
Re: faster with bad viscous clutch?
I am not going to do it anyways,I am just curious if this would make it slower.Just saying that its my luck I will fix it right and it will go slower.And pat we did dyno it before and that was with a bad vc so maybe I will dyno it again with a good vc.
I never said I was going to drive it etc And yes I have seen all these posts on it.
I just wanted opinions if the bad clutch was helping it to get a better 60ft et etc since it was locked.
I am not going to do it anyways,I am just curious if this would make it slower.Just saying that its my luck I will fix it right and it will go slower.And pat we did dyno it before and that was with a bad vc so maybe I will dyno it again with a good vc.
I never said I was going to drive it etc And yes I have seen all these posts on it.
I just wanted opinions if the bad clutch was helping it to get a better 60ft et etc since it was locked.
Maverick87
Member
Re: faster with bad viscous clutch?
I dont know if it helps with a better 60' that much mabee .05 if that. mine has been locked up for atleast a year and hasnt done any damage yet, But I have the 4wd front dif in and just use awd at the track after a nice burnout:lol::tup:
4 of them the same morning they were put in? Sounds like something else may have added to the problem.
I dont know if it helps with a better 60' that much mabee .05 if that. mine has been locked up for atleast a year and hasnt done any damage yet, But I have the 4wd front dif in and just use awd at the track after a nice burnout:lol::tup:
4 of them the same morning they were put in? Sounds like something else may have added to the problem.
TYTILIDIE
METH HEAD
Re: faster with bad viscous clutch?
I wished. Swapped VC's and could blast on it as fast as I wanted and never broke another one. If you Google VC you will find this is a common problem and the other 4472 T-cases out there. I read a ton of symptoms like mine from Safari, Bravada, Astro owners. If you dont have it happen to you, I would venture to say you are lucky.
I wished. Swapped VC's and could blast on it as fast as I wanted and never broke another one. If you Google VC you will find this is a common problem and the other 4472 T-cases out there. I read a ton of symptoms like mine from Safari, Bravada, Astro owners. If you dont have it happen to you, I would venture to say you are lucky.
Try Me
New member
Re: faster with bad viscous clutch?
So how can you be sure your VC is locked up? I have removed my transfer case because im pretty sure the chain is worn out to the point it is slipping on the gears and making a very loud nasty clicking/clunking noise when under load.
I noticed that when i turn the input shaft it seems like both outputs are turning the same amount. I am wondering if mine is locked up. My truck has always had a hard time with sharp turns but i thought it was just because of the big tires.
So how can you be sure your VC is locked up? I have removed my transfer case because im pretty sure the chain is worn out to the point it is slipping on the gears and making a very loud nasty clicking/clunking noise when under load.
I noticed that when i turn the input shaft it seems like both outputs are turning the same amount. I am wondering if mine is locked up. My truck has always had a hard time with sharp turns but i thought it was just because of the big tires.