So i got everything measured tonight, ALL hard seals are within spec (pretty much at brand new specs). So now my only concern is the rotor housings, so if i could get some input on them it would be greatly appreciated

 

JB weld and a razor blade will fill in any pitting.

for the housing side, i do not recommend any type of automated cleaning. the housing side tolerance can be very finicky.

 

I tried to be as careful as possible and didn't press hard, guess i could grab a level and make sure i didn't take to much off. And Jb? thats gonna be a lot of JB as it goes all the wag around on both housing, but thats manageable

 

only worry about major pitting, minor pinholes i wouldn't worry much about.

 

Alright, tips and tricks to clean the other housing? The black staining is horrible, soaking in carb cleaner didn't even loosen it

 

For a carb cleaner I like to use Berrymans B12 but only in a well ventilated area that **** is incredibly strong, for a degreaser Purple Power is really good stuff too

 

We got gunk brand at work and i let the housing sit a couple hours in it on each side and it didn't even touch the crud on the faces of the housing

 

a block sander will clean the housing sides, just do long and even strokes equally around the whole housing.

 

For some reason, that didn't cross my mind, highest grit? Or start low (500) than move up?

 

nope, 120 grit start to finish is what i use. fine sandpaper doesn't often work well, since it will round off the edges of work before cutting into the center area that you want to focus on.

once the surface is shiny that's is all you really need. don't try to get the whole thing looking like fresh aluminum or you likely went too far. that method also usually leaves the pits even, not requiring epoxy to fill them in.

 

Makes sense. Know what i gotta buy tomorrow than

 

Oh, what about the chrome inside the housing? Fine grit wet sandpaper drenched in oil wrapped around a bolt or dowel?

 

if you really feel like trying to work on the chrome it takes a lot of elbow work since it is such a hard metal. you will need some metalworking sandpaper of about 200 grit and run it in a 45 degree angle from side to side. not straight across, not with the grain of rotation, in between the two if that makes sense. much like a honed engine cylinder bore.

focus more on the center of the housing, the edges are already usually well worn.

don't expect to make much progress with it either by hand, this is something more left to precision machining but cross hashing the housings does offer a benefit of oil retention.


you should also do it outside in a well ventilated area with a decent dust mask and rinse if off with water and air afterwards. chromium dust makes cigarrettes looks like children's toys as a carcinogen.

 

pretty much a circular motion than, the housings are in good shape from what I can see, but I'd like to roughen it up a bit to help with the sealing of the apex seals for break in (like you said, honeing)

just having trouble deciding what kit to get, alot of options

gonna guess the same idea applies from the rotor housings to the iron faces also?

 

well circular may work. i more or less meant an "X" pattern.

you can razor blade off the iron faces, i wouldn't recommend scrubbing them with anything too harsh as its not really necessary.


i have some basic parts for reassembly on my ebay store. i just haven't gotten to making jigs for cutting the gaskets yet. i have most, just not a few like the front cover.

 

ok, so I did alot of sanding today to get one housing cleaned up, and theres still some pitting on it that is right on in the area where the o-rings sit, and theres one pit that is close to a coolant passage, I tried getting pictures the best I could, just JB it up?

also attached, I looked at the other housing, and I noticed the trailing plug hole in the chrome is cracked, it doesn't look major, but fingernail catches it while going over it. Is it a junker?

I'm not looking for any kind of power, this is just my first rotary rebuild and I'm sticking n/a so I'm not planning on boosting or anything, may take out the diffusers to help it breath a little bit better, don't feel confident enough to port the exhaust

 

you're worrying too much.

 

Lol alright, just shoot me down. So don't worry about the pits or cracks than, just get the housings cleaned up and call em good

And yes i'm worried to much, how worried were you when you rebuilt your first engine? i want to only do this once and not have to worry for awhile, my bank account shares the same feelings

 

Apparantly this at one point ate something and spit it out, hence why i think my trailing hole is cracked, theres some scratches going towards the exhaust port, junker? Or still being paranoid?

 

how mine turned up is irregardless. in fact i had to rebuild mine 3 times before it was good to go, due to electrolysis around the spark plugs. apparently someone ran it on straight water for some time.

finding all the small problems is what caused me to feel that much more comfortable with the engine rebuilding process.

it's often the things you can't see that get you.

 

Well i'm trying to catch everything that i can, just trying to eliminate possible issues that may bite me in the **** in the end. I don't feel the scratches going towards the exhaust will hurt it much being its on the end of the process, but i could be wrong? Shouldn't be hurting it that much because it was running when i pulled it 2 years ago, just want some comfort in my mind

 

those scratches shouldn't upset anything, if it were gouged from a seal failure perhaps but it doesn't seem to be the case.

 

cool, thanks for putting up with me Ben, there may be more questions, I gotta inspect the other housing more, and I really gotta look at them both around the plug holes for cracks. I shouldn't find anything because when it was running it didn't burn coolant or overheat or overflow

 

no worries

cracks on the trailing plugs is rather common. it's the FD guys who tend to be **** about them, even though they do little to no harm unless it is really bad.

 

under boost I can understand that

well, heres both my housings, curious if I should do more sanding/cleaning? Or can I give them a shot of paint to help them look better and start moving onto the irons?