Sideways7

iTrader: (7)

No, those aren't new. They actually came out of an auto-equipped car with 100k miles on it.
I realize most people probably know that you can clean rotors, but I just had no idea how well they could be cleaned up. Carb cleaner and some elbow grease goes a long way

They looked something like this when they came out:

Snack

dude.... how do they work triangle shaped like that? mine are round

turbo10th

iTrader: (6)

Those do look new, dont even think my low mileage jdm s5 turbo rotors look that good.

Sideways7

iTrader: (7)

They were soaked in carb cleaner for about 36 hours (probably overkill), periodically taking them out to brush them to break up the carbon. Then I put them in a hot, soapy water bath to get all the carb cleaner off, then I dried them and put PB blaster on them to prevent flash rusting.
I learned about it from the Bruce Turrentine (sp?) rebuild video at www.rotaryaviation.com. Except he didn't say anything about the flash rusting....

BrettLinton7

iTrader: (33)

nicee

veedubbed

Where are the pistons.

Delphince

I got that far and still didn't see the second picture yet, so I thought they came out looking like the first. I was filled with the urge to cause you pain for the unfairness of the universe, considerring the lengths I go to to keep my rotors free of any kind of buildup.

Lookin' pretty though, btw

Latin270

Great work!

Sideways7

iTrader: (7)

Thanks, I get a warm, fuzzy feeling every time I look at them.
Hopefully, I can start putting the engine back together soon. Its been right at 2 years since I tore the motor apart, and I finally have the money to get it rebuilt!

I plan on having a build-up thread detailing the trials and tribulations of this car and its engines(this will be its fourth since I bought it), but I just couldn't wait to post these pics. I took them out a few hours ago and it just blew me away.

scrip7

iTrader: (6)

I found out years ago about the flash rusting. I had cleaned a pair of rotors up real nice, dried them with compressed air and put them in large ziploc bags to keep dust off them. I went to get them out to spec them a few days later and they were already pitting from surface rust, I guess just from the moisture in the air that was in the bag!....needless to say I was livid!....these days I use Vaseline or Blaster until I'm ready to assemble. Your rotors look grand. Keep us informed on your build.

RyosukeD

iTrader: (2)

hawwwwt.

Sideways7

iTrader: (7)

Luckily I had read on the can of carb cleaner that you had to put penetrating oil on all cast parts. I didn't realize how fast it would do it, though. As soon as I dried it off with the compressed air, I could start to see a bit of rust. I immediately grabbed my PB Blaster and sprayed it down, then wiped it off and resprayed it.

stylEmon

iTrader: (2)

oooh, me next...

They look great. Get em balanced!

Sideways7

iTrader: (7)

How neccesary is balancing the rotating assembly if everything came out of the same engine?

stylEmon

iTrader: (2)

not a neccesity per say, but mazda allows a 50gram difference in rotor weight (per rotor).

If you balance the assembly, you can really increase your reliabilty and power up in higher RPMs. Imagine if the rotors where only 5 grams outta spec...

RX7freak08

mine are just as good. I'll post pictures up here soon to show you. I think they look pretty good.

scrip7

iTrader: (6)

The rule of thumb is to use rotor pairs whos weight stamp is within one letter of the other. Not exactly a true balance, but within oem tolerance.

Sideways7

iTrader: (7)

Since they came from the same engine, I would hope they are within 1 letter stamp.....

alexdimen

iTrader: (13)

There are plenty of mix n' match amateur engines out there. I found a few getting parts for my FC.

Sideways7

iTrader: (7)

No, I was the first person to ever tear down this engine. It was still factory sealed when I got it.

Just for kicks, though, how do you determine the weight stamp? There's stuff stamped all over the place on my rotors. On one the only one I could make out was a C, but on the other I found a D and an E.

fc3s91

iTrader: (23)

The weight will be on the rotor gear side only.
Thanks Robert

Sideways7

iTrader: (7)

Ok, its C and D then. Thanks for the info.

Burnin_streets

ahhh...wish mine looked that nice. lol

somebody5788

Wow mine didnt look that nice even after putting them through a brand new parts washer. Mine were trashed too though so it didnt matter.

Sideways7

iTrader: (7)

Well, a parts washer only does so much. I ran it though one too, and they still looked brownish. It took actually soaking them in carb cleaner to get them this way.