Re: yj springs on a cj
 

Bill,

I think you are asking me to think about the spring rate of the
springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
front and 210lbs/in with 5 leaves in back. Also, they are relatively
flat which is similar to those in a yj. I think that there are so many
springs and such a high spring rate because at the time it was thought
that Jeeps should ride firm. I also think that these high spring rates
contributed to stress fractures in the frame.

Karl



On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III
<----------@cox.net> wrote:

> Count the number of leaves in your springs, than ask yourself, why
>do they use some many when one or two will do? And why are their arcs
>different?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Karl Norrena wrote:
>>
>> Bill,
>>
>> I have been lurking the newsgroup for awhile and I have read many of
>> your posts and you usually have good advice, but I think the problem
>> that the guy had in the video was just bad judgement and not a whole
>> lot to do with springs. Could you enlighten me if there is something
>> going on here that I dont see or understand?
>>
>> Karl

Re: yj springs on a cj
 

Bill,

I think you are asking me to think about the spring rate of the
springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
front and 210lbs/in with 5 leaves in back. Also, they are relatively
flat which is similar to those in a yj. I think that there are so many
springs and such a high spring rate because at the time it was thought
that Jeeps should ride firm. I also think that these high spring rates
contributed to stress fractures in the frame.

Karl



On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III
<----------@cox.net> wrote:

> Count the number of leaves in your springs, than ask yourself, why
>do they use some many when one or two will do? And why are their arcs
>different?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Karl Norrena wrote:
>>
>> Bill,
>>
>> I have been lurking the newsgroup for awhile and I have read many of
>> your posts and you usually have good advice, but I think the problem
>> that the guy had in the video was just bad judgement and not a whole
>> lot to do with springs. Could you enlighten me if there is something
>> going on here that I dont see or understand?
>>
>> Karl

Re: yj springs on a cj
 

Bill,

I think you are asking me to think about the spring rate of the
springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
front and 210lbs/in with 5 leaves in back. Also, they are relatively
flat which is similar to those in a yj. I think that there are so many
springs and such a high spring rate because at the time it was thought
that Jeeps should ride firm. I also think that these high spring rates
contributed to stress fractures in the frame.

Karl



On Sat, 22 Nov 2003 10:58:27 -0800, L.W.(ßill) ------ III
<----------@cox.net> wrote:

> Count the number of leaves in your springs, than ask yourself, why
>do they use some many when one or two will do? And why are their arcs
>different?
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Karl Norrena wrote:
>>
>> Bill,
>>
>> I have been lurking the newsgroup for awhile and I have read many of
>> your posts and you usually have good advice, but I think the problem
>> that the guy had in the video was just bad judgement and not a whole
>> lot to do with springs. Could you enlighten me if there is something
>> going on here that I dont see or understand?
>>
>> Karl

Re: yj springs on a cj
 

Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a
leaf if you plan to jump, or hit a bump and bounce your Jeep higher than
a foot off the ground.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Karl Norrena wrote:
>
> Bill,
>
> I think you are asking me to think about the spring rate of the
> springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
> front and 210lbs/in with 5 leaves in back. Also, they are relatively
> flat which is similar to those in a yj. I think that there are so many
> springs and such a high spring rate because at the time it was thought
> that Jeeps should ride firm. I also think that these high spring rates
> contributed to stress fractures in the frame.
>
> Karl

Re: yj springs on a cj
 

Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a
leaf if you plan to jump, or hit a bump and bounce your Jeep higher than
a foot off the ground.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Karl Norrena wrote:
>
> Bill,
>
> I think you are asking me to think about the spring rate of the
> springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
> front and 210lbs/in with 5 leaves in back. Also, they are relatively
> flat which is similar to those in a yj. I think that there are so many
> springs and such a high spring rate because at the time it was thought
> that Jeeps should ride firm. I also think that these high spring rates
> contributed to stress fractures in the frame.
>
> Karl

Re: yj springs on a cj
 

Hi Karl,
Sounds like you need to re arc you springs to stock, maybe add a
leaf if you plan to jump, or hit a bump and bounce your Jeep higher than
a foot off the ground.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Karl Norrena wrote:
>
> Bill,
>
> I think you are asking me to think about the spring rate of the
> springs in my Jeep. As I recall they are 190lbs/in with 7 leaves in
> front and 210lbs/in with 5 leaves in back. Also, they are relatively
> flat which is similar to those in a yj. I think that there are so many
> springs and such a high spring rate because at the time it was thought
> that Jeeps should ride firm. I also think that these high spring rates
> contributed to stress fractures in the frame.
>
> Karl

Re: yj springs on a cj
 

> Does anyone have any insights on installing yj springs on a cj? <

A local club member has done this on a later CJ7 and raves about the ride &
flex improvement. There are several kits out there but I think OME's is most
complete. It's not a very big job, they just move the frame eye mounts out
ward a bit to allow the longer YJ-type springs.

Ghe nly comlication I see for you is the width of your inner spring mounts,
as on the pre-75's they 2" rather than 2.5". You'd probably either have to
weld on new ones or find a sensible way to ------ & reshape the ones you
have.

>A companion question to the above is what brand of lift springs would be
advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any
experience with these
brands?<

OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ
kit on my '94 for a number of years before I swapped it out for a RE 4.5"
extreme durty kit. It was a good riding & flexing setup, howeverf, some may
say the design is getting a bit dated.

The limitation on the OME kit is that it's only 2 - 2.5", which may not be
enough for you.

Let us know how this works out.

Re: yj springs on a cj
 

> Does anyone have any insights on installing yj springs on a cj? <

A local club member has done this on a later CJ7 and raves about the ride &
flex improvement. There are several kits out there but I think OME's is most
complete. It's not a very big job, they just move the frame eye mounts out
ward a bit to allow the longer YJ-type springs.

Ghe nly comlication I see for you is the width of your inner spring mounts,
as on the pre-75's they 2" rather than 2.5". You'd probably either have to
weld on new ones or find a sensible way to ------ & reshape the ones you
have.

>A companion question to the above is what brand of lift springs would be
advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any
experience with these
brands?<

OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ
kit on my '94 for a number of years before I swapped it out for a RE 4.5"
extreme durty kit. It was a good riding & flexing setup, howeverf, some may
say the design is getting a bit dated.

The limitation on the OME kit is that it's only 2 - 2.5", which may not be
enough for you.

Let us know how this works out.

Re: yj springs on a cj
 

> Does anyone have any insights on installing yj springs on a cj? <

A local club member has done this on a later CJ7 and raves about the ride &
flex improvement. There are several kits out there but I think OME's is most
complete. It's not a very big job, they just move the frame eye mounts out
ward a bit to allow the longer YJ-type springs.

Ghe nly comlication I see for you is the width of your inner spring mounts,
as on the pre-75's they 2" rather than 2.5". You'd probably either have to
weld on new ones or find a sensible way to ------ & reshape the ones you
have.

>A companion question to the above is what brand of lift springs would be
advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any
experience with these
brands?<

OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ
kit on my '94 for a number of years before I swapped it out for a RE 4.5"
extreme durty kit. It was a good riding & flexing setup, howeverf, some may
say the design is getting a bit dated.

The limitation on the OME kit is that it's only 2 - 2.5", which may not be
enough for you.

Let us know how this works out.

Re: yj springs on a cj
 

Jerry,

Thanks for your input. Your point about the spring width is a good one
and one that I do have some concern over. I was thinking of getting
new yj spring hangers and having a bracket built that would provide a
sturdier mounting point than just slapping on the new spring perches
and shackle mounts. I also have a concern over the front end of my cj
being heavier in the front than a yj and that the yj springs might
have a bit of trouble coping with the added weight. For now, a 2" lift
is acceptable. I have the typical characteristics of a jeep addict,
but I also like to incremental improvements rather than "go whole hog"
with a big lift.... BTW, who are RE? The project will be started just
after Xmas. I will keep y'all posted.

Thanks,

Karl

On Sat, 22 Nov 2003 15:45:41 -0700, "Jerry McG"
<gmcgeorge.REMOVE@frontier.net> wrote:

>> Does anyone have any insights on installing yj springs on a cj? <
>
>A local club member has done this on a later CJ7 and raves about the ride &
>flex improvement. There are several kits out there but I think OME's is most
>complete. It's not a very big job, they just move the frame eye mounts out
>ward a bit to allow the longer YJ-type springs.
>
>Ghe nly comlication I see for you is the width of your inner spring mounts,
>as on the pre-75's they 2" rather than 2.5". You'd probably either have to
>weld on new ones or find a sensible way to ------ & reshape the ones you
>have.
>
>>A companion question to the above is what brand of lift springs would be
>advisable? I have in mind OME, BDS, and superlift lift kits. Has anybody any
>experience with these
>brands?<
>
>OME, BDS and RE are making excellent leaf spring kits. I had Superlift's YJ
>kit on my '94 for a number of years before I swapped it out for a RE 4.5"
>extreme durty kit. It was a good riding & flexing setup, howeverf, some may
>say the design is getting a bit dated.
>
>The limitation on the OME kit is that it's only 2 - 2.5", which may not be
>enough for you.
>
>Let us know how this works out.
>