2.5 guage cluster swap

[1974CJ5]

I am beginning to give up hope on finding a full gauge cluster out of a 2.5 equipped xj. Every single 2.5 equipped xj or mj I have found has the idiot light gauges. Is it possible to make the full gauge cluster out of a 4.0 work in a 2.5 mj?

[jaekl]

There are some 4 cylinders with instruments, but you can use one froma 6 cylinder. The most important thing is the speedo hook up. There are threes styles early and later mechanical speedo and the late model electronic speedo. I think 87 is the transition for the two mechanical speedos. I know the early tachs are only 4 or 6 cylinder, but I've read here that the later ones can be switched. Either way it's no big deal. I hade a 6 cyl tach in a 4 cyl for 15 years until I found one to plug in. Just multiply the indicated reading by 1.5.

[1974CJ5]

Is it possible to calibrate the tach for use with the 2.5?

[Whamm]

  1974CJ5 said:

Is it possible to calibrate the tach for use with the 2.5?

 

It is possible. You need to remove the tach from the cluster and then ajust the pet. There is not a correct setting for any truck but on a 2.5 it should ideal around 700 + or - 50 rpm

 

Here is a picture of what your looking for

[1974CJ5]

  Whamm said:

t is possible. You need to remove the tach from the cluster and then ajust the pet. There is not a correct setting for any truck but on a 2.5 it should ideal around 700 + or - 50 rpm

 

That sounds pretty greek to me, but I think I will just get one out of a 4.0 and see if I can figure it out. Then if not, just pester the crap out of you guys... :D until I get it working.