Overheated FD engine. Cracked radiator. Guy ran straight water to try to get it running. Water and coolant seeped into combustion chambers. It sat for over a year before I could tear it down.

Enjoy.

 

looks like a little bit elbow grease will clean those right up!

 

i've restored rotors in similar (or worse) shape. it's quite time-consuming, but it can be done.

 

http://www.rebuildingrotaryengines.c...leaning_rotors

!! Thanks to Rob and boys at pineappleracing.com

Stu Aull
80GS
Alaska

 

I'm sure those Kool-Aid Jammers will help you out during the cleaning.

 

Check the bearings carefully; they look kinda thrashed though it's hard to tell from pics.

 

Looks like they need a lot of cleaning and new bearings.

 

Bad for what? They look like they'd be great anchors!

 

I have one in slightly worse condition that i use to hold my screen door open, I cleaned one corner and decided to source some in better condition.

 

That's the front rotor with a bad bearing. The other is questionable. You know how any 13B after '86 has an oil pellet? This one came out in pieces. That's why the front bearing is bad.

PercentSevenC wants to use these in a turbo half bridgeport. Sounds like after a lot of hard work, it may be possible. Thanks!

 

The engine still ran when the PO got it, but blew smoke and didn't run all that well. It could only run for about 40 seconds each time due to the leaking radiator running out.

I went back and checked my notes. Turns out the last time the engine ran was spring of '07. Here I thought it only sat for a year but nope it actually sat for two years and 10 months. It was also rust locked by the time I began tearing it down. Plenty of time for this type of damage to occour.

Now if the PO had used coolant instead of straight water each time he tested the engine, as impractical as that sounds, less rust may have formed.

 

if you can get all the seals out, you're in good shape, if not, then its clock material, or as chuck would say, toss it in the woods!

 

Carefully clean all the seal grooves, and then check clearances. Bearings are no big deal to get replaced, and the face finish really doesn't matter, but if your seal grooves are munged past tolerance they're pretty much done.

Also check for excursion of the ring gears. Been known to happen on overheats.

 

actually we can cut to the chase, its an FD rotor, if its done 50,000miles this is like 300,000 on a 12a, check the apex seal grooves for a big V, you can see it by eye

 

Talk about koolaid. When I was in the Navy, we used bug juice (koolaid) to clean the brass deck drains. We added about 3 packets of bug juice to a mop bucket and let the deck drains soak over night. One packet would make 5 gallons of bug juice. I bet it would have the same effect on the rotors. The secret ingredient was citric acid.