So I'm looking through ebay for 1st gen. parts and come across this rebuild kit. It's a great price so I ask the seller if it comes with side seals, and what the apex seals are made of ... carbon,steel etc. This was his reply...............

Dear installer67,

no,, i tried real hard to say what it brings but you can purchase extra also the seal are made from a metal materials and they work very nice ,i do not want to give up the properties of how they are made hope you understand but lets just say so that they are holding up to very high power i,ve seen 1073hp AT THE REAR TIRES WITH 48 PSI


- fastecracing
Anyone know of rotaries makin this kinda power with this boost?

 

Sounds reasonable theres a 4 rotor on youtube that can put out 1600, but he seems sketchy, and i doubt they could dyno that motor twice lol

 

I would stay away. I would get a full mazda rebuild kit, and mazda apex seals. But everything comes down to how long you want the engine to last. Some people have put down big numbers on the stock seals, and the longevity is proven. The biggest factor in apex seals is longevity, breakage, and wearing charactoristics. Some will wear very quickly, can damage your housings, some won't break just bend (but you need to pull the engine appart to straighten them again).

As far as those seals putting down over 1000hp, maybe on a three rotor, and who knows for how long - which is what actually matters to me...

 

+1 for Mazda seals. It does depend on what you're doing with the car. If you're running very high boost and only concerned with a few passes on the motor, then some of the "bend but don't break" seals might be the best option. But for the majority of us that don't want to rebuild our motors every few thousand miles (or less), there are only 2 good options -- Mazda OEM and Mazda Race (ceramic or carbon). The OEM seals are the best bet for most, since they provide good durability at a relatively low price. Ceramic seals have great durability, but are very expensive and if they do break, those hard shards screw up everything. Carbon seals are for very high RPM operation, where their reduced mass keeps them in contact with the rotor housing.

This is my loose recollection of a quote i read: "Mazda spent decades developing their current lineup of seals with a huge team of talented engineers, top-notch facilities, and a big budget. They even contracted the services of Ph.D. materials specialists to guide their efforts. There is a huge amount of technology in these things -- from the material selected, to the grain flow, to the geometry, to the progressive hardening process used on the wear surfaces. It is very unlikely somebody will design something better on their own . . ."

 

Maybe I'm a language snob, but I wouldn't put my hard-earned money into something that is supposedly secret and technically advanced but is being sold by someone with the writing ability of a six-year-old.

 

looks like they used an online translator. obviously not an english speaker...

 

i agree. i also say stick with mazda seals. have them in mine, but then again, mine is a dd.

 

ive seen a 4 rotor make 1600+ here the vid http://www.braptv.com/play.php?vid=123

 

Yeah thats the same one thats on youtube

 

I have one of these kits installed in my stock port 12a DD, for the price it was not a bad option. My only complaint was that the kit was packaged very poorly. They just threw all the seals on a piece of cardboard and shrink wrapped it. The seller was a very prompt and kept very good communication with me. The guy only speaks spanish and I believe the kit was produced in China at least thats what the piece of cardboard had printed.

 

I don't do business with anyone who cannot write a correct, complete sentence.

 

As I was trolling around the other sections I found this thread.

https://www.rx7club.com/showthread.p...ight=ALS+Seals


I want to give them a try when I'm ready to make my FB fast.

 

Sure, but in how many languages? We have established he's not an english speaker. Tranquilo established that.

You think any of us wouldn't sound like a retard to a Russian, or spanish speaker? Or if someone from out of the country contacted you to buy something would you first become fluent and articulate in that language, and THEN respond?

He may or may not be completely competent and intelligent, there is no way to infer that from what he wrote if he used an online translator.

 

But don't you think that a professional business, especially one involved in designing and selling something as technically complex and research-intensive as RE apex seals, could bother to hire someone to write a properly-structured ad?

If I were trying to sell something in Russia, for example, I'd at least hire a native-speaking Russian to translate my advert for me.

If you can't expect your customers to be fluent in your language, but you want to convince them you know what you're doing, you should spend at least a little effort in communicating with them in a way that will look like you know what you're doing. Which means something beyond the free service at babelfish.

 

True. Good point

 

Every time I've seen language like that it has turned out to be a scam, and I'll chase deals for a little before giving up on them. When they don't want to answer questions, it's not a good sign.