Just got the piston rings for my 1990 xj,4.0l, the box does not specify which one goes on what groove,

dot on top with bevel up
and
dot on top with bevel on bottom

please help,which one goes on the first and second groove,the third groove is self explanitory
thanks

 

Have checked the manufactuers website?
Application is usually dots facing up (toward cylinder head)
bevel up = top ring
bevel down = bottom ring

Don't forget to set the gap 1" down the bore.

 

Like this, your rings may have a dot instead of a letter. Make sure to stagger the openings like shown.

 

what is the gap supposed to be set at,by the way thanks turbo xj

 

hey radio flyer the rings on the diagram show the bevel on the outside,on mine the bevel is on the inside of the ring,or does it matter,ive done mainly ford engines in the past,i have some idea of installing them,just havnt done it in over 5 years orso

 

Generic image your OK with what you have-

 

another quick question, the guy at oriley auto parts said,they are pre gapped,so no need to gap them, cause they are std size, is this right or do i still have to gap them

 

For a perfect setup you need to mic the bore and then place the rings in their bore that they will go in and measure the gap. Have you confirmed that your cylinders are not oversize ?

 

man,you scaring me,i HOPE,they are std size,its the original motor,the previous owner had it for over 10 years, and said he never did any work to motor,but i will find out tmmrw,am doing the over haul then,wish me luck,lol

 

so its safe to say that

bevel up = top ring
bevel down = bottom ring

 

Yes- Check for the markings to make sure that you don't install them upside down.

 

Have you measured the cylinders? Have you checked for out-of-roundness?

Have you/are you going to re-hone the cylinders?

I guess what I'm trying to get at is the cylinders may be larger now.

My best advice, measure each cylinder and check to see if you have the right sized rings.

 

thanks for all the info