paulmasoner

iTrader: (1)

i cant find a reference to it anywhere, so i'm guessing it should be an obvious answer.... though the only obvious answer i can think of is that it is you!

Outkast187

The engine is in an Rx8, but not renesis. I didnt see the www.clubrx8withoutstockengine.com I must have overlooked it. I could care less if you can get a housing at all honestly. Just because you dumb bastards have no idea about the actual function of the engines, is no reason to get pissy. I wouldnt come into one of your underglo threads and say I know all about how they are made if I didnt.

You cant even get that right. I own a RX8 you assclown. Who the hell is talking about chrome foil? The exact process is hard chromium plating, call Mazda and talk to anyone with any sense. I am not trying to convince anyone, I have found the answer and talked to no les than 4 different people who have re plated the housings.

For anyone that is actually looking for info, its hard chroming plating. I went to the chrome shop today, they tested a housing. He replated the last one in the late 90's without a failure ever, and it has over 60K on the replated housings. It was low on compression, and they brought it back to stock compression. Its a must have for anyone running the cosmo housings that port em...you dont have the major risk of peeling around the ports.

LOL at you dumb bastards who dont have a clue........holy **** this is great. I have never seen so many wrong people swear they are right. Funny funny ****.

Outkast187

LOL, heres yet another source...

http://jhbperformance.com/products.php#rotor_housing

and another..
http://cp_www.tripod.com/rotary/pg16.htm

and yet another....
http://www.racingbeat.com/Tech/Tech.Engine.4.htm

So exactly what don't you guys understand? Do I need to draw a diagram? { If any of you guys are mentally challenged please let me know, and I wont give you a hard time about it). Its all pretty straight forward.


It is hard chrome pated. It is electroplated. It can be de chromed and rechromed without touching the factory machining for oil retention, and long as it has not been gouged by broke apex seal.

olddragger

iTrader: (3)

guys i would advise not to be so quick to blow people off. I did that before in my younger years and i was the one that ended up looking like an idiot. There is a lot of stuff out there we dont know about. i know that for a fact.
I say Ok show us what you got---wont cost be a dang thing and i may learn something.
olddragger

digitalSniperX1

Outkast,

I think you're looking past one thing here, assuming it is true.

First, I doubt you'd argue against the what is probably fact that Mazda has, and by far, more experience with these engines than any other company. This would include restoring, or attempting to restore the surfaces on these housings.

Again, and this would no doubt be impacted by Mazda's economic advantage in selecting a new housing vs. restoring the surface, but they've seen it best to toss the old old housings and not replate them. Certainly failure rate of a housing that has been 'replated' is part of their consideration.

mysql

I guess it was some other outkast187 that made this post:

https://www.rx8club.com/showpost.php...5&postcount=47

Giving it a second look, it's possible you meant you don't have a renesis engine, but that would also explain to the rest of us why you're trying to push some untested RX-7 stuff on us.

No one cares. Have fun playing with yourself.

Outkast187

Excellent points. Mazda knows rotary's like no one else, thats a fact. If you scuff a nikasil(a different plating developed for rotary housings by NSU in 67, but wore apex seals) cylinder on your CR250...does Honda replate it? Nope, they trash it and sell you a shiny new one. Is it because it cant be replated? Nope, they can be replated with no problem, and are replated by the hundreds daily. If you have a defective OEM radio in your car ($600+), do they want it back to repair? Hell no, they will let you buy a brand new one, or install a brand new one under warranty and trash old one. Mazda, Ford, Chevy, etc. are not set up for restoring parts. They have an assembly line halfway around the world, that cranks out new parts and only new parts. They cant just throw in an old part and say...fix it. It takes a major craftsman to make judgement calls on something like that. Its way too expensive for Mazda to start a new factory for refinishing old parts...its much more cost effective to sell new parts.

Olddragger, you hit the nail on the head. I will also take any information someone will give me. I am not charging anyone for the info, and the info is correct . Cant get much better than that.

The rest of you can keep replacing housings. LOL. And everytime that K&N gets dirty, you must throw it away....since you cannot replicate the molecular lubrication filtration system that they do from the factory. And keep them underglo's glowin' .

mysql- you are correct. I own a RX8 with a 13b-RE. So I have nothing to do with a renesis.

paulmasoner

iTrader: (1)

this thread was a lot better when i was pushing Jeff to tell me who the guy in the background of the lonelygirl15 GIF is.....

it failed, then was at least laughable, now it fails again....

digitalSniperX1

Outkast, I was assuming they do not replate them even when it's on their dime. Of course on my part I'm assuming that's true, not sure though.

Others have said it's the case. I don't know if they were saying that in the context that the costs were coming out of Mazda's pocket.

I'm not sure they need a factory here to do the replating, but your point is well taken.

They have at least one reman plant in the US though (from what I've read here on this site).

RK

iTrader: (1)

I know you're overjoyed with yourself but you should really rethink this line of thought that the RENESIS is the same as previous Mazda rotaries.

It isn't. Mazda has gone away from the hard chrome platin process used on the Cosmo because it was unreliable. They now do something which can't be replicated which if you take the time to read in this thread you'll understand is different then the process you're going to use. That's why no one is even considering it with the Reny.

Rotary tech HAS improved since the 60s. The fact that you have rotors from that era that can be re-chromed really isn't news.

And your joy over being unclear about the fact that you were looking for information regarding rechroming a 13b-RE cosmo and thus creating a confusing as all hell clusterfuck of a thread probably means you're going to be missing out on a lot of valuable knowledge related to RX-8s in the future. The same knowledge that helped you out when you bought a car with an engine and turbo you couldn't even identify.

Good luck.

Outkast187

Replating them can be a tedious process, since the housings from a grenaded engine will be more trouble than they are worth. Refinishing them will take a small factory, its about $100K for the line to do it. My local plater has 4 lines to do it and plates for GM, EZ-GO, and turned down Harley-Davidson recently. Its not cost effective for mazda to use the manpower to replate a housing. They may have $75 invested in each housing brand new out the door, pointless to spend hours of work to rework a damaged part. The ideal one to replate is one that has just lost compression over time.

digitalSniperX1

At 75 dollars, I can see why they'd chunk them. I eluded to that advantage Mazda has (over someone considering fixing them vs. buying one).

I'd bet too though they have the customer's best interest in mind as well in that simply replating them may not address reliability issues limited to the wear surface.

In other words, the money spent on new might avoid future issues not involving the wear surface.

Of course, rebuilding an standard piston engine block has well defined procedures that have existed for many years. I don't think that can be said of the rotary (correct me if I'm wrong).

For example, the bolting together, with some very long bolts, to form what amounts to an engine block has to result in stress fractures that'd have to be checked to produce a quality reman'd product, for starters. I have no experience that'd say this is true but my intuition says that's one potential failure mode that'd have to be looked at. If they have procedures outlined for doing so, and that'd probably have to be Mazda outlining them (or an engineer with the right experience), then I'd like to see them....would be interesting.

olddragger

iTrader: (3)

well a good point would be that certain "mods" could be done to a housing and THEN a fresh coating applied. that could be an advantage over modifying that required some coating contact. If it was coast effective you could send the housing off while you do a mild porting for example, or do something with those oil weep holes and spark plug holes then replate.
olddragger

Outkast187

Exactly digital, when you wear out a housing...its seen some miles in its time. Mazda wouldnt risk a bad rep by sending out a replated 100K mile part. Cracks will form with that many heat/cool cycles I am sure. Good point.

Yep Olddragger, that would be a major benifit in my opinion over a simple ported used housing. Much less likely to have a chrome chip.

tdiddy

rotarygod

I think this has gone on long enough.