didn’t want to pollute your turbo thread; I agree with your feeling about not choosing Pulsar/copy-cat turbos over Garrett, but it is worthy to note that according to Pulsar their turbine housings are directly interchangeable with Garrett and for someone considering a less powerful but more responsive street engine they do offer a 0.72 A/R T3 housing that I feel could serve this purpose.
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Just checked out their page..... daym , they offer so many options for that turbo .....

They do look like reasonable quality and have some good reviews. I know at least one person that will use one so that will be interesting.
What I do know about them
*inferior turbine (cast iron?) housing material .G30 is cast stainless - although a downside to that is they are ridiculously heavy.
*Inferior turbine blade material

I know there's some pictures of the turbo at the beginning of the thread, but I wanted to add one with something that might be familiar to show just how impressively compact it is for the amount of power you get.

Next to it is a standard Starbucks Grande (16oz / 473.17mL) cold cup.
https://cimg2.ibsrv.net/gimg/www.rx8...339d022239.jpg
That's the recommended .83 housing.

well for sure a good stainless housing is better, but not really a huge deal on a street car imo.

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That really is the crux of it .....for it's physical size.............. it really can't be beat.

Agreed . The big thing for me would be that I wouldn't trust it to fit properly . I've had a few experiences with Chinese knockoff products ..................

Also something I've noticed with the cast stainless manifold vs the old steel ones I made ..... they really do hold the heat in much better. Everything that can be done down there to stop heat getting to the LIM and into the engine bay ...is a good thing.

yeah ok

but regarding your EFR8370 comment on the other forum, your current 0.83 G30 turbine is the same peak turbine flow as the EFR 7670 1.05 housing
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I put it at same flow as the EFR 7670 0.92 .... 23lbs/min .

maybe my memory is off, was thinking flatline was 24 lb/min (2.5 Pr+)

also, Matchbot is not listing 70mm turbines properly

It's 23ish at the pr range I'm in ..... 24 later in PR range.

I don’t think you’re understanding me clearly, but it’s not really any big deal so ok.

Correct , I didn't get the point you were originally trying to make.
I was just correcting the 7670/1.05 compatible comment.

I have 24.0 for the 0.92 and 25.5 for the 1.05, but ok

So, uhh... where do I send the money? An how much? =)

Hi ,
best to PM me .
Cheers

Brettus,

Kinda relevant, kinda not. You are using a backpressure sensor correct? Can you describe the parts and tubing you used for this? Just curious on what I am piecing together vs what others have used.

Check out the fourth picture down on this post : https://www.rx8club.com/series-i-maj...5/#post4959080 .Fitting is in upper right of photo.

I've used a 90 degree stainless fitting- 1/8"NPT into manifold and 1/8" flared steel tube exit. From there there is approx. 1m of steel tubing leading to a point beside the ECU . It then goes to silicone tube and I have used the VFAD plastic reservoir as a pulse dampener/ moisture barrier . From there it goes to my gauge . I don't dedicate a permanent gauge to EMAP as you really only need to look at it when you are analysing your system performance. Plus, a lot of moisture comes through the line on startup which can damage the gauge sensor.

Updates?
 

Is the other block ready yet? Any updates?

Well ... I had a heart to heart with my engineer and managed to convince him to............ maybe one day, if he's not busy ....do the low comp rotors .

Accidently turned up da bewst ... Still only 11.5ish on stock engine but damn ............ I'd forgotten how quick these things are!
https://cimg5.ibsrv.net/gimg/www.rx8...183dcdd5c9.png
2nd 2500 to 8000 ................3rd to 7500........................ zero to 11psi in 0.5 seconds in 3rd.

nice 👍

100. Yezzir. :yesnod:

2nd to 3rd was with the turbine blade carrying momentum right?

Still 2500 11+ was only ~1.5 seconds 0.0

Yeah , and remember ............... you don't typically start from 2500rpm ... I just did that because I was tuning. At any rpm over 4000 the spoolup is much quicker.

just for old times sake :suspect:

https://www.rx8club.com/series-i-maj...5/#post4935511
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