ok so i get my ceramic coated rotor seals in the mail today and open them up and the first thing i see is this huge gouge on the surface of one of them....keep in mind i paid about 400 for each housing...in your opinion is this a "good" housing? or a usable one at all? the surface is completely flawless other then this gouge. and its on the exaust side of the housing which is why im hoping its ok.

 

it might be good. but I might be wrong.

 

Ouch...dude...you got bent over for $400.
I'd bitch like hell.


-Ted

 

+1

 

Tell them to make you another one.

 

yea that housing is def shot. complain to the guy u got it from. and alot.

 

why would anyone even ship faulty work like that, where did you get it coated?

 

It shouldn't affect compression, being near the exhaust port, but you will likely have some exhaust dilution of the next incoming intake charge. Not good for power. And I agree, $400 is high.

 

****, well kevin from rotary resurrection was the one who sent it to me.... what should i do????i dont want it if its going to be bad

 

oh yeah, and i have all the emails for all parts of the transactions if that helps...he said there "like new" and he made a comparison to the good ones on his sight so...i dont think i want to put this in my engine if its going to have adverse effects.

 

Pictures can be decieving, how deap is the scrach?

someone who has stacks of rotor housings on the shelf can easily grab the wrong one and put it in the box, maybe you should give him a call before puting this on the forum. If those are the JHB housings they can be repaired for much less than the cost of new housings.

 

well thats the thing, im not bitching....yet, becuase i dont want to jump to conclusions about how bad it is. but if its not usable im going to raise hell. but if hes nice about it then everything will be alright. about .5mm, i cant get an exact reading on it. like i said i just want to get your guys opinions on it becuase i sure as hell dont want to jipped out of 400 dollars

 

He'll be cool about it. Kevin is a good guy.

 

These are JHB's cermet ceramic housings. This is how JHB sent them to me. Some grooves are too deep for them to repair, and Marc told me that sometimes if a housing only has one deep groove by the exhaust port they will choose not to fill it in because the material is so expensive. The rest of the housing is perfect, and this groove by the exhaust port will NOT affect compression, power, or seal wear whatsoever.

I have gotten a few other JHB housings from Marc this way and used them with no ill effects. True, it's not what you "want", but it will certainly work, and is FAR better than using a housing with a grooved up rear edge from apex assist triangle wear.

This was the only set of series 4 housings I had available, if I had more I might have sent him one with no visible defect and used this one myself to save the bitching.

I love when the "armchair builders" look at a couple pics and start screaming bloody murder with no clue what is and is not going to cause a problem. Basically any part that does not appear perfectly flat with zero wear, people on this forum are going to judge trash-worthy. By this logic, no rotary engines would be rebuilt, and everyone would be paying 4 or 5 grand for shortblocks built out of brand new parts, because no used part is perfect and almost all will have a minor defect here or there. It doesnt mean it is bad or unuseable.

And by the way, SS, I resent your comment that you "dont want to get gipped out of $400" and you will "raise hell" if I don't succumb to your wishes, and also the fact that you choose to go public rather than simply asking me first. I would not have sent it to you if I did not deem it perfectly useable. Why would I? What do I have to gain? What, 400 dollars? Look at my rides...do you really think I need your 400 dollars bad enough to risk this kind of bullshit name-dragging and mud-slinging?

And people wonder why I am hesitant to sell the engine parts I have horded. More and more I am beginning to see I am far better off to just keep what I have and use it myself, rather than sell it out-the-door and listen to the bitching from those who dont know any better, or those who hold opinions other than mine (which usually speaks more loudly due to experience).

 

Ted, I'm especially disturbed by your post. As a builder yourself, you should know full well that a groove by the exhaust port has no effect on compression or seal wear whatsoever.

IF this were a standard rotorhousing that just broke an apex seal, it could be argued that the groove might actually have "high spots" that would wear into the apex seal as it sweeps across. Since this is a JHB resurfaced housing that was ground down and built back up, clearly this is not the case...it's just a small gap with missing material, which will affect nothing.

This being the case, why would you choose to make inflammatory recommendations like this, about me of all people?

I think we're both pessimists at heart, but you take it too far sometimes.

 

first off i would like to start off by saying that i MAY have handled this situation poorly. the reason i say MAY is becuase, well perhaps i SHOULD have talked to you personaly about the housings first, HOWEVER, that being said, Had i gone to you first i may have been influenced otherwise...you may have talked me out of getting other opinions, and i diddnt want that...so if i did offend you by saying that i diddnt want to get gipped out of four hundred dollars, i sincerely apoligize. and about the comment of me saying i would raise hell? well i mentioned nothing about succumbing to my wishes so please, no heresay. no offence, but that was a naked comment, nothing specific was ment by it. additionaly, put your self in my shoes man? if you were any "other" builder getting these in the mail.....would you not have questioned the quality of the product and want it discussed and okeyed by others??? of course i ask you your going to say its ok...its your job to make me feel as satisfied about my goods and services. and a job well done might i say about doing so....it does make sence that, as an experienced engine builder, why would you send someone a product that might be bad? you dont want that **** flyin back yourway right?...well neither do i which is why i was simply trying to cover my ***....this is my first rebuild and i want it done right without repercussions. i might also ask my self logically about this matter...if theres is a gap significant enough to alow air flow from the exhaust to the intake, or even to the section BEFORE the exhaust portion...i have to pose the question and i need a no bullshit answer, especially from you kevin. considering your policy on returns, i dont want to use this in my engine if 20k down the road im going to kicking my self in the *** becuase i put this in. the questions is simply this...should i or should i not use this rotor housing, period.

 

FWIW, this housing should be under JHB's warranty. Not me, I didn't coat it...JHB did, and they warranty them. And since they are the company that coated them, you may seek a second opinion from them as to the reason the groove was left, and any possible problems with reuse (they will tell you the same thing they told me, and the same thing I told you). And perhaps they may even give you one without a blemish? I doubt it, but if you're going to lay in bed awake at night because one of the rotorhousings in your 20 year old car had a groove by the exhaust port, then it might be worth your while to speak with Marc to ease your apprehensions.

I anxiously await the morning posts by the "that's not perfect so it is junk, you got screwed, I would never use anything like that in an engine" crew of both real and "armchair" builders.

 

but would you put in your engine that you plan on puting atleast 60k on? (serious question) its one thing to regergitate the word of another but would you put your name on this?

and i dont mean to sound snobby but could you PM me his number please?

 

www.jhbperformance.com

Rotorhousings never fail at any certain time or mileage. When was the last time you heard anyone say "my engine blew up because my rotorhousing wore out". You don't do you? The engine lasts as long as the apex seals/coolant seals/oil seals do. Sure, using old, worn housings decreases compression and can limit the useful lifespan of the engine, but that's clearly not the case here. This is not an issue that has anything to do with lifespan IMO.

Now, JHB tells me they have done extensive testing on these coated housings and have some with hundreds of thousands of miles of use on them which held up far better than stock. I personally have only built a few engines with them, including a 450+rwhp halfbridge FD. OF those, all are still running today to my knowledge, and I've had no reason or opportunity to open them up for evaluation. I havent run any for years on end to know their longevity. So in that regard I cannot answer your question. I can tell you these should be superior to stock chrome in terms of friction and heat transfer, and seal wear.

 

it is simply a hypothetical question....if you got this housing from a parts seller/ rebuilder WOULD you use this housing in your own engine?

 

I would, and I have. As I said, I have built engines, for customers, that I warranty, with these housings, in the past. As I just said above, I built the engine for my high power FD with a set of similar housings. How much more plainly can I say it?

 

Okay, maybe I should put up a disclaimer that states that *I* would not use such a housing.
Even if the groove "mic'd" okay, I still wouldn't use it, cause it's still a sharp edge.
True, it should not affect performance or compression, but I would worry about how the apex seal would wear going over such a groove over time.
Heat causes expansion.
We're talking about a stainless steel "sleeve" here, and SS does all kinds of stuff when it heat expands.

For the price - $400 - you could've got almost a brand new housing (do they still offer them for sale?), or you could've easily gotten some very NICE good, used housings.
I bought a pair of S5 turbo ones for $100 for both in very good condition, so I'm looking at it from strictly a price point of view.

Disclaimer - I do not have any direct experience with the JHB stuff, but *I* think they are overpriced. I've seen the bitchfest with all the headaches from previous customer experience, and it downright scares me to be giving these guys a handful of Benjamin's for their work.


I don't think the original post mentioned you, so this was not directed towards you.
I had a feeling it was JHB, and I thought the OP had a legitimate beef at JHB and not you.
It wasn't meant to be inflammatory, and I hope my explanation above clearly states my case on why I replied as such.
Apologies if it was taken any other way.

Edit: my brain just isn't working right nowdays - I see the "RR" in the subject line was directed towards you. For some fucked up reason, I took it as RR = "right rear" - I dunno why my brain was thinking that, so sorry for the mix-up!


-Ted

 

This thread deserves a big

 

Whether or not that flaw would effect performance, no manufacturing company worth their salt would sell an item like that.

They should just take a hit and rework it, or replace it.

(purely from a business standpoint... not from an engine building standpoint)

 

why would kevin lie to you!?!?!?!
you know he isnt the new kid on the block