Towing with a 2001 GC 4.0 Inline 6
03-16-2006, 03:42 PM
#42
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
If your question was to change from 3.55 to 3.73 then nope, not near
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:42 PM
#43
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
If your question was to change from 3.55 to 3.73 then nope, not near
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:42 PM
#44
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
If your question was to change from 3.55 to 3.73 then nope, not near
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:42 PM
#45
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
If your question was to change from 3.55 to 3.73 then nope, not near
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
enough difference to be worth while. I think 4.11 is as low as you can
go without getting into carrier changes.
When towing you should forget about top gear or OD anyway and you sure
don't want to be breaking any speed records.... Gear change or no, I
could see some slow uphills with that weight on and some really
'interesting' downhills....
There should be a tag on your diff that has the ratio on it or you can
jack up one wheel with an open diff, put a chalk mark on it and rotate
it twice while counting the driveshaft revolutions. It is easiest to
mark the driveshaft with chalk too.
My CJ7 will spin the driveshaft 3.31 turns when the wheel spins twice.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:47 PM
#46
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
I just read that again. I thought you were way overweight for some
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:47 PM
#47
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
I just read that again. I thought you were way overweight for some
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:47 PM
#48
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
I just read that again. I thought you were way overweight for some
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 03:47 PM
#49
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
I just read that again. I thought you were way overweight for some
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
reason. You are just below 5000 lb, the Jeep should have tons of power
for that.
Mike
dmacintire wrote:
>
> Does not answer my towing question. But fun to read.
03-16-2006, 04:58 PM
#50
Guest
Posts: n/a
Re: Towing with a 2001 GC 4.0 Inline 6
I had to go look the thing up:
http://www.jayco.com/html/catalog/fl...=74&mod_id=329
Your owners manual should give the towing capacity with the specific
axle ratio that you have. This towing capacity is based on the axle
model, axle gears, tranny, frame, and tires. Adding the equilzer hitch
does not change that, just makes it easier to tow. It should also give
you some ideas on how much you would need to change the axle ratio to
bump the capacity.
No matter what you do, this is going to be right up there in terms of
reasonable towing capacity for a GC. Your trailer is high and wide, lots
of wind resistance from the front, lots of side area for the wind to
push around. I suspect that you will find short trips to be fine, long
hauls across windy Nebraska and Wyoming to be a bit hard on you and the
truck.
dmacintire wrote:
> This GC does not have factory towing, so I have added a weight
> distrubution hitch with a sway bar and a HD trans cooler. I have
> heard that I should change the axel gear ratio from 3.55 to the
> optional 3.73 but have also seen post that just say the trans cooler
> and WD hitch. I'm planning on pulling a Jayco Feather 19h 3,400 dry
> weight and 4,450 loaded, with a hitch weight of 405.
>
http://www.jayco.com/html/catalog/fl...=74&mod_id=329
Your owners manual should give the towing capacity with the specific
axle ratio that you have. This towing capacity is based on the axle
model, axle gears, tranny, frame, and tires. Adding the equilzer hitch
does not change that, just makes it easier to tow. It should also give
you some ideas on how much you would need to change the axle ratio to
bump the capacity.
No matter what you do, this is going to be right up there in terms of
reasonable towing capacity for a GC. Your trailer is high and wide, lots
of wind resistance from the front, lots of side area for the wind to
push around. I suspect that you will find short trips to be fine, long
hauls across windy Nebraska and Wyoming to be a bit hard on you and the
truck.
dmacintire wrote:
> This GC does not have factory towing, so I have added a weight
> distrubution hitch with a sway bar and a HD trans cooler. I have
> heard that I should change the axel gear ratio from 3.55 to the
> optional 3.73 but have also seen post that just say the trans cooler
> and WD hitch. I'm planning on pulling a Jayco Feather 19h 3,400 dry
> weight and 4,450 loaded, with a hitch weight of 405.
>