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9krpmrx8's Boost Build Thread

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Old 03-20-2014, 12:11 PM
  #3826  
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Originally Posted by 9krpmrx8
**** it.
I find myself saying this a lot when it comes to the 8...
Old 03-20-2014, 01:06 PM
  #3827  
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Originally Posted by yomomspimp06
I find myself saying this a lot when it comes to the 8...
Yep, I don't even keep count anymore,
Old 03-23-2014, 08:32 PM
  #3828  
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mazda rx8, where you fix one thing and something completely unrelated breaks

....
**** it.
Old 03-23-2014, 10:42 PM
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exactly. We blasted the manifold and identified three cracks. So on Tuesday I will get a quote for a tubular that works with the Greddy and then we shall see what I decide.
Old 03-23-2014, 10:51 PM
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top mount
Old 03-23-2014, 11:27 PM
  #3831  
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So I have another members new BNR 60-1 sitting here and I just got my turbo back from a rebuild from Majestic Turbo here in Waco, Texas. The BNR is a really nice piece and I wish I had gone that route from the get go. Although, I do like some things better on mine, such as the coolant fitting setup and the porting and port matching we (SARX) did on my compressor housing.

Obviously the BNR is larger on the compressor wheel than mine is but mine is a billet wheel from Comp Turbo and it is larger than a out of the box T618Z from Greddy. Which one performs better will be determined but the car this is going on will have a very similar setup to mine. I do have an unmodified Greddy T618Z that is out to ATP Turbo for some fabrication mock up and I will have updates on that later this month.

We do not have graphs for either of these turbos unfortunately.

The hot side of the BNR was coated this weekend by Cradin Industries here near San Antonio, that is not how the hot side is shipped from BNR. The Greddy manifold and downpipe were coated in the same exact stuff. My hot side was coated by Majestic. The cradin stuff should be far superior and my manifold and downpipe will be coated by Cradin as well when I get the crack repaired or a new manifold fabbed up.

Anyway, here are the pics.

http://www.flickr.com/photos/9krpmrx8/13372261365/http://www.flickr.com/photos/9krpmrx8/13372266465/http://www.flickr.com/photos/9krpmrx8/13372409183/http://www.flickr.com/photos/9krpmrx8/13372276315/http://www.flickr.com/photos/9krpmrx8/13372656824/http://www.flickr.com/photos/9krpmrx8/13372286605/http://www.flickr.com/photos/9krpmrx8/13372667074/http://www.flickr.com/photos/9krpmrx8/13372672664/http://www.flickr.com/photos/9krpmrx8/13372301865/http://www.flickr.com/photos/9krpmrx8/13372681664/http://www.flickr.com/photos/9krpmrx8/13372680633/

Last edited by 9krpmrx8; 03-23-2014 at 11:32 PM.
Old 03-24-2014, 12:02 AM
  #3832  
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you coated the inside of your turbine housing?

Originally Posted by 9krpmrx8
So I have another members new BNR 60-1 sitting here and I just got my turbo back from a rebuild from Majestic Turbo here in Waco, Texas. The BNR is a really nice piece and I wish I had gone that route from the get go. Although, I do like some things better on mine, such as the coolant fitting setup and the porting and port matching we (SARX) did on my compressor housing.

Obviously the BNR is larger on the compressor wheel than mine is but mine is a billet wheel from Comp Turbo and it is larger than a out of the box T618Z from Greddy. Which one performs better will be determined but the car this is going on will have a very similar setup to mine. I do have an unmodified Greddy T618Z that is out to ATP Turbo for some fabrication mock up and I will have updates on that later this month.

We do not have graphs for either of these turbos unfortunately.

The hot side of the BNR was coated this weekend by Cradin Industries here near San Antonio, that is not how the hot side is shipped from BNR. The Greddy manifold and downpipe were coated in the same exact stuff. My hot side was coated by Majestic. The cradin stuff should be far superior and my manifold and downpipe will be coated by Cradin as well when I get the crack repaired or a new manifold fabbed up.

Anyway, here are the pics.











Old 03-24-2014, 12:16 AM
  #3833  
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Nice. Can't wait to see some results.


Hopefully that coating on the inside of the turbine housing doesn't chew anything up when it starts to flake off. Usually anything before or in/on the turbo I wouldn't coat internally. Downstream it wouldn't matter.
Old 03-24-2014, 12:50 AM
  #3834  
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Good pics .... very interested to see the difference between the turbine wheels . Also those are 11 blade wheels . Mine is a 12 blade but with a lot more of a clip than the BNR .
Old 03-24-2014, 12:53 AM
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Yeah it's guaranteed not to come off, we shall see on the manifold. On the turbine housings they are not coated internally.
Old 03-24-2014, 01:14 AM
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The only coatings I've seen on turbo manifolds survive are plasma based coatings. Those are $$$$$.
Old 03-24-2014, 08:36 AM
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Originally Posted by Arca_ex
The only coatings I've seen on turbo manifolds survive are plasma based coatings. Those are $$$$$.
The coating can allegedly handle up to 3k* F. It is not ceramic based from what I understand. It will be interesting to see if it can take the expansion of the cast iron.
Old 03-24-2014, 09:42 PM
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Hmm, BNR must have changed the design of their turbo upgrades since i got mine from them. I kinda like that wastegate actuator.
Old 03-24-2014, 09:48 PM
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Yeah he has, I have seen a few versions over the years. You can buy the wastegate actuator and bracket from him separately.
Old 03-24-2014, 10:38 PM
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Mine was a $150 a couple of years ago
Old 03-24-2014, 10:43 PM
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It's the same price now.
Old 03-24-2014, 10:55 PM
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Yeah i was quoted a price a few months ago but i didn't realize it was a whole new design. I thought it was just an exact replacement.
Old 03-24-2014, 11:11 PM
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Originally Posted by nuke0907
Yeah i was quoted a price a few months ago but i didn't realize it was a whole new design. I thought it was just an exact replacement.
Way better (for several reasons) to stick with the stock actuator and do a few tweaks ..............IMHO
Old 03-25-2014, 06:16 PM
  #3844  
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Nice. Do you have any expectations how this turbo will be compared to BNR and/or original Greddy? More/less lag? More low/high end? More linear?
Old 03-25-2014, 08:17 PM
  #3845  
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Originally Posted by AAaF
Nice. Do you have any expectations how this turbo will be compared to BNR and/or original Greddy? More/less lag? More low/high end? More linear?
BNR will make more power than the custom turbo. It will be a touch laggier but not by much.
Old 04-06-2014, 10:06 AM
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Scott quick question for you.

When you say
Originally Posted by 9krpmrx8
I am running NGK BUR9EQP in the Leading and stock RE9BT in the trailing.
Can you explain why you are running that particular plug setup and also what gap you are using? Thanks.
Old 04-07-2014, 08:36 AM
  #3847  
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They are colder plugs in the leading position, the NGK's will come properly gapped in the box, shouldnt need to eff around with that. I run the same plugs on my set up with BHR ignition.
Old 04-07-2014, 09:08 AM
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Originally Posted by Xeridae
Scott quick question for you.

When you say

Can you explain why you are running that particular plug setup and also what gap you are using? Thanks.
I am no longer running that setup, I am running RX-8 9's in both the leading and trailing location with stock gap.
Old 04-07-2014, 02:57 PM
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Originally Posted by 9krpmrx8
I am no longer running that setup, I am running RX-8 9's in both the leading and trailing location with stock gap.
did you machine the barrel of the plug to get it the correct length ?
Old 04-07-2014, 03:16 PM
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Nope.


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