Let us know how it goes. Man this forum aint the same without DB around.

 

When the ceramic bearing turbo's came out in the mid 90's, they where junk if i remember correctly?

 

Will do man.

W/O The BR crew around i dont come around here much, first post in a week or so?

 

I think it had more to do with the method they used then the fact they were ceramic though. As mentioned, Turbonetics used a single roller bearing along with a conventional journal bearing.

I believe that the roller bearing also carried the thrust loads. That was their claim if a remember right, it could carry substiantially more thrust loads. I think they found that the arrangement was causing vibration issues though and that was the primary cause of failure.

Don't get me wrong, I believe Garrett uses ceramic ball bearings in their race turbos and I think they kick some serious *** with them. But race engines often see very different conditions. For example, heat cycling may really hurt a ceramic bearing, where carrying say a 5:1 pressure ratios with a 1400F exhaust housing sitting right by it is nothing for it. In a race car, they probably don't see a whole lot of significant heat cycles so the ceramic bearing is far superior since they toss the turbocharger every race before the effects of heat cycling shows up.

In a street car... It was like 30F this morning and that bearing would probably reach 200-300 degrees in under a minute. Thats a lot of heat related stress.

Realize though, I'm just guessing here. These new bearing systems might be the greatest thing to hit turbocharger technology in the last 20 years. Or they may be complete flops. I'll wait until I see how well proven they are. I'm not competitively racing so staying on the cutting edge of technology is not important at all to me. Getting my *** to work every morning it though.

God knows why I'm DD a modified 4G63 after that last line. I guess they are an addiction.

 

Off topic, but do you or anyone know who long DB is banned for and what he was banned for this time?

 

Are you sure he made that forum the day after being banned? I dont think it is.

There are post on that forum from late 08.

 

Buschur just renamed / migrated the Buschur Forum to a new name to try and compete with EvoM. If you can't follow the rules on someone else's forum and get banned, just rename yours and you're back on the internets

It's sure civil here now that the Buschur camp is gone and not coming back, at least according to him on his "new" forum. Nut swinging Al is gone for good, too.

Peace on earth, good will to men.

Back on topic -- ceramic bearings have some real interesting theoretical capabilities. I knew the machinist who was putting ceramic bearings in custom machined hubs for the US cycling track team a few years back. The rotational resistance was amazing. Whether they will last in a turbo, and what it will take in terms of a learning curve is another question altogether...

 

okay. Thats what I was thinking.

+1 to the bold part.

 

I know!!! It's been so peaceful and it feels like the Evo community is back as a whole after that arrogant *** got banned. It truly is an amazing feeling.

I think he just became fed up with the fact that he was losing all the worthwhile records that he was trying to go for...fastest Evo? Nope AMS got that...fastest full interior street car? Nope he got beat at that.

Now that DB's crew is gone, EvoM is a much much more enjoyable experience. Now all we have to deal with are his crazed nutswingers but since one of them already stated that he doesn't come on much anymore because of the fact that DB is gone, it seems like the problem has been solved. I guess if DB makes a new forum, nutswingers will swing all the way across the internet with him.

All the better for the real community

 

I was reading about the ceramic turbos? I think with the BR crew gone its been actually pretty boring and techfree beside the English Racing crew posts. Thanks for the useful link above, now I know where all the good tech articles are while you guys wonder about how the new ceramic turbos are doing....

 

Interesting to hear about precision using ceramic bearing turbos. These should rock from what I have learned over the years. The old turbonetics single ceramic BB design is more robust than the garrett twin BB design according to a turbo shop I delt with that had been building turbos for 35 years. For those who dont know its not the BB bearing on the shaft that is helping turbo spool faster. Its the elimination of thrust bearing that makes a turbo spool fast. The thrust surface is like a mini disc brake. The clearance between the "pad and rotor" per say is very small at .001 and filled with oil pressure. this oil pressure causes the thrust to drag on turbine. BB turbos eliminate the thrust bearing. the bb race itself acts as the thrust surface. this allows the shaft to spin freely without a thrust surface to slow it down. I used a couple of the single bb turbonetics years ago. They act just like garretts twin BB. fantastic boost recovery, and spin forever on shutdown.

 

I have a Turbonetics Super 60 Ceramic BB turbo on my GM 2L engine similar to an ecotec, and the spool on it is great, better than a 3076 in fact with similar flow potential...

.

 

Mike@AWD has the fastest full interior street car but is running a BR longblock with some other BR products. I guess you haven't been to the other site. AMS is a sponsor over there, and so are a lot of non BR nut swingers. EvoM is going down hill and you can thank the Mods. for that.

If I remember correctly DB has done more testing than any vendor/shop on EvoM, you should be thankful what he has done for the DSM/Evo community. Now that the other site is up and running you will see a lot of people moving over there. There are more tech articles that have been posted on HBF the past few days than have been posted here in a couple months. Now all the other site needs is to get the ECUflash guru's over there and you can say BYE BYE to EvoM.

 

Those tech articles seem to be threads up on Evom that have just been migrated over.

I don't really like the guy, but there is no doubt evom has lost a 'good' member in the sense that he helped shape and push progress on the community.

It's a shame he can't suck up his ego every once in a while. Instead he chooses to attempt to divide the evo community like a real poor sport instead of just working through his difference with the people that run evom. He needs to realize just because he's a vendor he can't say what ever he wants and then ***** when some other vendor pulls the same ****.

 

Some feedback: apparently no rebuild kit availabe - you need to send the Turbo back to PTE for repairs...

:-P