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-   -   Advice please: '90 YJ Conversion (https://www.jeepscanada.com/jeep-mailing-list-32/advice-please-90-yj-conversion-48213/)

SnoMan 08-27-2007 08:15 AM

Re: Re: Advice please: '90 YJ Conversion
 
On Mon, 27 Aug 2007 09:36:20 -0000, Garrett <Garrett.Loy@gmail.com>
wrote:

>- "you will have to pretty much completely replace your driveline with
>(at minimum) 1-ton axles, heavy-duty transfer case/transmission,
>driveshafts, etc."
>given that I have the A/X-15, do I still require a new transmission/
>transfer case? how about motor?



You will need stronger axles but stock drive train can live IF you
gear the axles properly. Biggest mistake people make is that they
refuse to run 5.38 or deeper gears with big tires like this and this
places a LOT of strain on drive train and this is where the need for
HD trannies and Tcase is born because they try to use a big engine and
tranny gears or Tcase gears to overcome the big tires and tall gears.
Also kong as you take the time to properly gear it it will do
surprizing well with stock engine but I cannot stress enough that
gears will make you or break you on this project.
-----------------
TheSnoMan.com

Carl S 08-27-2007 10:27 AM

Re: Advice please: '90 YJ Conversion
 
If that's what you want, go for it. Personally, I think a Wranlger on 42's
just plain looks stupid. Too much tire. It's too tall and wide to really run
any trails (at least where I'm from)

If you have the AX15 it might be OK, but you'll want a gear-driven t-case.
Your best bet is to get two t-cases and run one in low all the time. Dana60
1 tons, disc brakes front and rear. I still reccomend the Detroit out back
and a selectable up front.

The frame is going to need re-enforcement. I dont know at what points, but
you
will have to see where it flexes and eliminate it.

Anti-wrap bars will be a challenge because of the height. You don't want to
limit articulation, but you don't want to allow wrap. I suppose you could
mount them on the side of the frame after the centerpoint to add legnth, but
make these strong as you'll then also be using them as a center-slider.

Custom over-the knuckle steering is a must. Please bear in mind that YJ's
came stock with sway and trak bars, without these installed your vehicle may
not pass inspection. You'll have to do a custom job on the trak bars.

Your stock steering box won't be able to turn the 42's, you'll need to
upgrade it, though I'm not sure with what. A more powerful pump and stouter
box are definately in order. The 4.2L will probably turn the tires if you
have the right gearing (and the first t-case in low), but figure 45-55mph
will be your limit, and 2-5mpg.

Most states have lift laws, and I do not think this will be street legal
without a drop bumper and massive mud flaps. Plan on getting stopped a lot.

It's going to be a ton of work and $$ just to get it to reliably turn 42's.
Even more on top of that to make it street legal.

Carl

"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:27 AM

Re: Advice please: '90 YJ Conversion
 
If that's what you want, go for it. Personally, I think a Wranlger on 42's
just plain looks stupid. Too much tire. It's too tall and wide to really run
any trails (at least where I'm from)

If you have the AX15 it might be OK, but you'll want a gear-driven t-case.
Your best bet is to get two t-cases and run one in low all the time. Dana60
1 tons, disc brakes front and rear. I still reccomend the Detroit out back
and a selectable up front.

The frame is going to need re-enforcement. I dont know at what points, but
you
will have to see where it flexes and eliminate it.

Anti-wrap bars will be a challenge because of the height. You don't want to
limit articulation, but you don't want to allow wrap. I suppose you could
mount them on the side of the frame after the centerpoint to add legnth, but
make these strong as you'll then also be using them as a center-slider.

Custom over-the knuckle steering is a must. Please bear in mind that YJ's
came stock with sway and trak bars, without these installed your vehicle may
not pass inspection. You'll have to do a custom job on the trak bars.

Your stock steering box won't be able to turn the 42's, you'll need to
upgrade it, though I'm not sure with what. A more powerful pump and stouter
box are definately in order. The 4.2L will probably turn the tires if you
have the right gearing (and the first t-case in low), but figure 45-55mph
will be your limit, and 2-5mpg.

Most states have lift laws, and I do not think this will be street legal
without a drop bumper and massive mud flaps. Plan on getting stopped a lot.

It's going to be a ton of work and $$ just to get it to reliably turn 42's.
Even more on top of that to make it street legal.

Carl

"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:27 AM

Re: Advice please: '90 YJ Conversion
 
If that's what you want, go for it. Personally, I think a Wranlger on 42's
just plain looks stupid. Too much tire. It's too tall and wide to really run
any trails (at least where I'm from)

If you have the AX15 it might be OK, but you'll want a gear-driven t-case.
Your best bet is to get two t-cases and run one in low all the time. Dana60
1 tons, disc brakes front and rear. I still reccomend the Detroit out back
and a selectable up front.

The frame is going to need re-enforcement. I dont know at what points, but
you
will have to see where it flexes and eliminate it.

Anti-wrap bars will be a challenge because of the height. You don't want to
limit articulation, but you don't want to allow wrap. I suppose you could
mount them on the side of the frame after the centerpoint to add legnth, but
make these strong as you'll then also be using them as a center-slider.

Custom over-the knuckle steering is a must. Please bear in mind that YJ's
came stock with sway and trak bars, without these installed your vehicle may
not pass inspection. You'll have to do a custom job on the trak bars.

Your stock steering box won't be able to turn the 42's, you'll need to
upgrade it, though I'm not sure with what. A more powerful pump and stouter
box are definately in order. The 4.2L will probably turn the tires if you
have the right gearing (and the first t-case in low), but figure 45-55mph
will be your limit, and 2-5mpg.

Most states have lift laws, and I do not think this will be street legal
without a drop bumper and massive mud flaps. Plan on getting stopped a lot.

It's going to be a ton of work and $$ just to get it to reliably turn 42's.
Even more on top of that to make it street legal.

Carl

"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:27 AM

Re: Advice please: '90 YJ Conversion
 
If that's what you want, go for it. Personally, I think a Wranlger on 42's
just plain looks stupid. Too much tire. It's too tall and wide to really run
any trails (at least where I'm from)

If you have the AX15 it might be OK, but you'll want a gear-driven t-case.
Your best bet is to get two t-cases and run one in low all the time. Dana60
1 tons, disc brakes front and rear. I still reccomend the Detroit out back
and a selectable up front.

The frame is going to need re-enforcement. I dont know at what points, but
you
will have to see where it flexes and eliminate it.

Anti-wrap bars will be a challenge because of the height. You don't want to
limit articulation, but you don't want to allow wrap. I suppose you could
mount them on the side of the frame after the centerpoint to add legnth, but
make these strong as you'll then also be using them as a center-slider.

Custom over-the knuckle steering is a must. Please bear in mind that YJ's
came stock with sway and trak bars, without these installed your vehicle may
not pass inspection. You'll have to do a custom job on the trak bars.

Your stock steering box won't be able to turn the 42's, you'll need to
upgrade it, though I'm not sure with what. A more powerful pump and stouter
box are definately in order. The 4.2L will probably turn the tires if you
have the right gearing (and the first t-case in low), but figure 45-55mph
will be your limit, and 2-5mpg.

Most states have lift laws, and I do not think this will be street legal
without a drop bumper and massive mud flaps. Plan on getting stopped a lot.

It's going to be a ton of work and $$ just to get it to reliably turn 42's.
Even more on top of that to make it street legal.

Carl

"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:31 AM

Re: Advice please: '90 YJ Conversion
 
By the way, there is nothing wrong with going SOA just to increase tire size
by 2-4". It's not just about tire size, it's about added articulaton and
clearance.

http://s33.photobucket.com/albums/d9...iyed/?start=60

The above link is my old 89 YJ sprung over on 33's. On page one is the XJ on
31's.

Carl


"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:31 AM

Re: Advice please: '90 YJ Conversion
 
By the way, there is nothing wrong with going SOA just to increase tire size
by 2-4". It's not just about tire size, it's about added articulaton and
clearance.

http://s33.photobucket.com/albums/d9...iyed/?start=60

The above link is my old 89 YJ sprung over on 33's. On page one is the XJ on
31's.

Carl


"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:31 AM

Re: Advice please: '90 YJ Conversion
 
By the way, there is nothing wrong with going SOA just to increase tire size
by 2-4". It's not just about tire size, it's about added articulaton and
clearance.

http://s33.photobucket.com/albums/d9...iyed/?start=60

The above link is my old 89 YJ sprung over on 33's. On page one is the XJ on
31's.

Carl


"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Carl S 08-27-2007 10:31 AM

Re: Advice please: '90 YJ Conversion
 
By the way, there is nothing wrong with going SOA just to increase tire size
by 2-4". It's not just about tire size, it's about added articulaton and
clearance.

http://s33.photobucket.com/albums/d9...iyed/?start=60

The above link is my old 89 YJ sprung over on 33's. On page one is the XJ on
31's.

Carl


"Garrett" <Garrett.Loy@gmail.com> wrote in message
news:1188207380.616099.106160@x35g2000prf.googlegr oups.com...
> "This is not to say it cannot be done but it is to say it will be
> no easy task "
> -I realize that it will not be easy. I dont expect this to be
> completed by tomorrow, it's something I plan to work on over a very
> long time period.
>
> "A wrangler on 42's is completely assinine."
> -I've already got 31"s on there, I don't really want to do a SOA
> conversion and only increase my tires by 2".
>
> I made this page up a few months ago,
> http://garrett.loy.googlepages.com/wranglerconversion
> also, http://garrett.loy.googlepages.com/yjinfo
>
> basically what i still need to know is,
> -is there any kind of federal/state of CA law against having 40+ inch
> tires on a personal vehicle? or where would I find out?
> - "you will have to pretty much completely replace your driveline with
> (at minimum) 1-ton axles, heavy-duty transfer case/transmission,
> driveshafts, etc."
> given that I have the A/X-15, do I still require a new transmission/
> transfer case? how about motor?
>
> Thanks!
>
>




Garrett 08-27-2007 03:41 PM

Re: Advice please: '90 YJ Conversion
 
http://4wheeldrive.about.com/library/uc/uceelkins.htm
so this guy is just a moron who gets 1-2 MPG?
Not being sarcastic, actually curious, lol.
Thanks,
Garrett



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