Whatever it is All I want to know is what rpm does the S5 stock 13b with a big streetport usually expierience apex chatter ???

For somone who doesent know chatter or clatter involves the apex seal hitting the rotor housing really fast like vabrating against it instead of smoothly gliding across it.
Or Something like that hehe.

 

Chatter can happen at all RPMs. At higher RPM, I would be worried about eccentric flex.

 

in my 91 na there are huge chatter marks in the housing. 210,000miles and the car wasnt driven hard, so i dunno what the cause is

mike

 

Lack of lubrication, and general wear on the apex seal grooves on the rotors.

 

oh i see. Hey you have alot of posts.

 

He has a lot of posts, but no life and no girl friend!

 

Jelious that he has more posts than you ?

Aron Cake ? Let me know if your ever going to sell your N/A turbo conversion stuff.

 

It's doubtfull that I will be selling it anytime soon, but I will be selling eventually. I will be done some....other unspecified...engine work in a few years after I get tired of the bridged turbo-NA engine.

 

the seal grooves are all in specs though. what about the seal springs?

mike

 

I would imagine that worn springs will cause chatter, but centrifugal force will tend to keep the seals against the rotor housing.

 

Maybe it's from not bieng hard enough on it

I beat the **** out of mine daily. Actually, before I rebuilt the engines, I would beat the living snot out of that car, redline everytime i shifted. No chatter on the housings when i took it apart. I dont think thats the problem

But seriously, its probably lack of lubrication ... dead oil metering pump.

 

Its usaly S**t quality Apex's.

You dont see expencive Ceramics or even Mazda's own 3 pc Tips doing it.

I have been told its due to the weight of the Apex? as the engine spins faster the Apex (being heavy) creates more force and pushes so hard against the Housing the Oil is removed and starts a Snag then not sort of motion.

Chris

 

- by peejay, from here

I've read several people say that it starts around 6k, one even said "6,200".

 

So will I be able to spin to 10k safely with a large *** Godzilla port and say a turbo oil pump? Will this be sufficiant for the engine to last 20k

 

Please enlighten me as to WTF a Godzilla port is..
10k you would have some problems with the standard excentric shaft i'd imagine, if your serious about spinning it that high, maybe consider getting a 2piece shaft. Get some good carbon(maybe ceramic?) apex seals aswell.

 

I thought carbon sealz shatterd when exposed to the slightest detonation ?

how much are they?

 

So do most apex seals.. a very good reason why your motor shouldn't be detonating in the frist place..

Probably quite expensive from what i've heard, I wouldn't know though, i've never really looked into it.

 

have you seen my new King Kong port?

 

Hmm, aaron, unspecified engine work? and your av says '2-rotor not enough'. Are you planning a 3 rotor swap?

 

King Kong Lol I will use that on the next rebuild when I go bridge the Godzilla Port

 

godzilla is combined 4 and 6 ports isn't it.

 

yeah