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here are some pics! The pics of the bearings on the left. You don't notice the oil feed hole in the K04 bearing but it is .040" and the contact area for the thrust collar to bearing is .0850". The feed hole for the thrust in the GT28 is .0825" and the bearing/collar contact is .1250" all...

You get what you pay for. You buy a $600 hybrid still using a K04 CHRA, you will be buying another or replacing it in a short amount of time. Then you are out everything b/c your foundation is as stong as the turbos weakest link. Which there is more than 1 weak link to the K04 unit. The shaft...

go to mazda 6 c l u b. com and its in the Speed 6 category with the title Mazdaspeed 3/6 Ko4 Hybrid turbocharger 330 WHP!!!

I didn't know about this thread or else I would have chimed in earlier! Well the CNC programs are done and everything is complete and several units are out and running now. There is now an optional 2 year warranty. If you have oil seal issues, we can do the total seal on the compressor. You...

Well there are a few people running around now with their turbos. Updates, install pictures and information are on the other ms clubs.

3 stage 2's were sent out. There should be install pictures here within the next week!

I'll take a piggie, but the product will work and I am 100% confident that it will be a solid and reliable product. Spool will be great. You can just get out so much volume from the stock housing. The idea with the stock housing was to make a replacement for the K04. Time to get rid of the...

yeah thats me. I am working on a new site now. BNRsupercars.com. It won't be uploaded till the site is complete. Stage 1 will be fine. It will not hurt the turbo with the stock housing. Just won't flow as much volume as the bigger compressor housing which is good for 300-320 WHP with...

The stage 2 is the same CHRA as the stage 1 (both are GT28 Disco Potatoe). I was going to use my custom GT28X compressor for the stage 2 but availability of the wheel was going to be hard to maintain. So I am staying with the Disco for both turbos. The gain from 1-2 is in the compressor...

It is a complete CHRA replacement. The housings are machined out to fit the CHRA. 100% bolt up no fabrication required...

If you remember the MS miatas came with a dual ball bearing Garrett turbo in its first models. Garrett had bad reliability problems with the BB units. So Mazda dropped Garrett and went to KKK. Now problems with the KKK and now they are doing V6's instead of turbo 4's in the new models.

You bring up a good point. I have lots of experience with restrictors with the RX7's. Since the turbocharger gets full engine oil pressure at all times, it needs a restriction to cut down the volume of oil when you bump up the oil pressure. FC rx7's they run about 60 psi oil pressure. They...

yup. Thats the way it goes... There is extensive modification to both housings to make fit properly. The CHRA is an off the shelf part that has a 1 year warranty covered through Garrett. I have used these CHRA's with great luck for the past 6-7 years. If Mazda is going to cover the stock...

I am just stating that there is a huge problem with the turbochargers. It may run fine on one car but on another it could have the issues. When you restrict oil flow to a turbo that spins 220K RPM, that is very risky. The K04's turn about twiced as fast as a normal garrett turbo. BTW there...

Its not bolt in Garrett replacement. I have these CHRA's custom built using a bearing housing that is custom made for me by Garrett. They can't sell it to anyone else. I had it custom made for other applications which is very similar to these K04 builds. The turbo end housings endure lots of...