Hi all hope your well. Could I please run something by you. I’ve stripped my engine and I am in the process of cleaning all components for a rebuild in the next couple of weeks. During the cleaning process I was removing the apex seals on the rotors, and noticed on the front rotor 2 apex seal were quite stuck in there and theses were the broken ones. And the gap is now tight On the two ends. Were they came out. Does this mean the rotor is passed it and I need a new one? Or do I just open the gap and re-use the rotor?
engine inside looks great almost brand new even. I was very lucky no damage.
(1992 touring x)
thanks in advance people
ps,built a few piston engines but this is my first rotor. And I am in love with it 😂👍

 

A quick comparison of the rotor with the specs will give you a basis for a logical decision.
check my signature for the site where you can download the FSM. Other valuable stuff as well.

 

It is possible to work on the apex seal slot if it's pinched or damaged. The apex seal needs to be able to move freely without binding.

Also sometimes the slot can wear out over time, if it's too loose that's not what you want either.

The shop manual has measurements to test the slot for wear.

Ideally you'd get a new rotor. But, many times it can be re-used but you have to make sure everything is good when doing so. If it binds up or has a spot that puts too much pressure on the seal you could have major problems down the road.

Dale

 

Thanks Dale. I was wondering if I should go new rotor. But there is no damage to it just a bit tight on the two slots were the apex broke.

 

in the manual, there is a section where you rebuild the engine, and then in the back there is a list of specs and things.

i just measure everything, and replace as needed. it takes forever, but you get a better engine for less money. by the time you buy all the seals and 2 rotor housings it is actually less to just buy the whole engine new right now

 

The "bit tight in the two slots" is damage. When apex seals break they can bend and deform those slots. They have to be carefully repaired to make sure the seal has free movement but not opened up too much so there's slop.

Dale

 

true, but before you fix anything, measure all the other grooves. it would suck to spend a bunch of time fixing an apex slot to found out that a side seal slot is bad...