400whp turbo setup from NZ

Place for discussions about the RX-8
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

400whp turbo setup from NZ

Post by Brettus »

Hi all ,
I'm new here but certainly not new to the rx8 . As the title states I have developed a turbo setup for the Renesis. If any of you are on the US site , I'm Brettus on there also.
Anyway , the new manifold I built for it worked so well I decided to get them cast in stainless and will at some point be making them available to fellow rotary enthusiasts.
Would post a pic here but it seems a bit of a mission for me to do that on this site so I'll just post a link: https://www.rx8club.com/series-i-major- ... ost4942654

Also to warpcoil : can't post on Chrisholmes's thread without joining (haven't decided if I will yet). Have discussed it with him off site though.
These users thanked the author Brettus for the post (total 10):
Paul_13 (Thu May 06, 2021 10:44 pm) • 30405 (Thu May 06, 2021 10:48 pm) • New Duke (Thu May 06, 2021 11:17 pm) • warpc0il (Thu May 06, 2021 11:41 pm) • ChrisHolmes (Fri May 07, 2021 11:09 am) • Phil Bate (Fri May 07, 2021 8:36 pm) • v-rex (Fri May 07, 2021 9:09 pm) • MadTaz (Mon May 10, 2021 7:14 pm) • Milos_Balunovic (Sun Jul 11, 2021 9:22 pm) • willberry70 (Fri Oct 28, 2022 11:16 pm)
User avatar
Paul_13
Club Member
Club Member
Posts: 1517
Joined: Sat Jul 27, 2019 1:53 pm
RX-8: 231
Location: Basingstoke
Has thanked: 34 times
Been thanked: 40 times

Re: 400whp turbo setup from NZ

Post by Paul_13 »

Oh boy, I feel a divorce coming on.
I've always wanted to turbo or supercharge my car
These users thanked the author Paul_13 for the post:
30405 (Thu May 06, 2021 10:48 pm)
User avatar
Shagrington
Forum Moderator
Forum Moderator
Posts: 32772
Joined: Tue Sep 12, 2006 1:54 am
RX-8: 192
Colour: Sunlight Silver
Location: Kent (out in the sticks - nothing urban here)
Has thanked: 266 times
Been thanked: 320 times

Re: 400whp turbo setup from NZ

Post by Shagrington »

Hi and :welcome: Brettus :)
'Grington.
former Club Treasurer 2010-18 (now finally retired) \:D/
Silver 192 green interior LEDS, Nordic Green hoop spoiler, roof inserts and wheels Silver Stripes (now finally retired) :cry:
350matt
Club Member
Club Member
Posts: 3158
Joined: Mon May 15, 2017 9:09 pm
RX-8: 231
Colour: Strato Blue
Location: Northants
Has thanked: 29 times
Been thanked: 327 times

Re: 400whp turbo setup from NZ

Post by 350matt »

Interesting
what sort of price were you thinking for the manifold? and are you planning on producing a kit of parts?
I'm assuming that you're using the stock ECU with mazda edit or versatune ?
User avatar
GreySilver Beast
Former Member
Former Member
Posts: 64961
Joined: Sun Dec 10, 2006 6:57 pm
Location: Somewhere in the UK
Has thanked: 1581 times
Been thanked: 365 times

400whp turbo setup from NZ

Post by GreySilver Beast »

Hi & :welcome: to the RX-8OC :thumleft:

<<<<<< Please put your Location in your Profile Box, it will help us to know where you are, if required any help in the future :thumright:
These users thanked the author GreySilver Beast for the post:
Brettus (Fri May 07, 2021 7:46 am)
GreySilver Beast-Test Drives Unlimited (Nigel)
Club Member from 2006 - present
Events Team from 2015 - 2024
Events Coordinator from 2017 - 2023
Administrator from 2012 - present RX-8 Owners Club UK
Tesla M3LR AB 363 AWD " Blue Beast "
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

350matt wrote:
Thu May 06, 2021 10:56 pm
Interesting
what sort of price were you thinking for the manifold? and are you planning on producing a kit of parts?
I'm assuming that you're using the stock ECU with mazda edit or versatune ?
Don't know the price yet sorry . I'll be offering a package that includes : the manifold, an engine mount bracket(wont fit without this) , tuning via Mazdaedit and support for the build . Highly unlikely I'll ever offer a kit .
User avatar
warpc0il
Spin Doctor
Spin Doctor
Posts: 32532
Joined: Sat Sep 06, 2008 10:56 pm
RX-8: 231
Colour: Lightning Yellow
Location: Groomsport, Co Down, NI
Has thanked: 444 times
Been thanked: 2080 times

Re: 400whp turbo setup from NZ

Post by warpc0il »

Brettus wrote:
Thu May 06, 2021 10:28 pm
Also to warpcoil : can't post on Chrisholmes's thread without joining (haven't decided if I will yet). Have discussed it with him off site though.
If it helps with your decision, any member of the OC is now allowed to advertise, for both privates sales and "trading", on the forum, whereas guests are not... :D

:welcome: anyway
These users thanked the author warpc0il for the post (total 3):
Brettus (Fri May 07, 2021 3:02 am) • GreySilver Beast (Fri May 07, 2021 2:49 pm) • Milos_Balunovic (Sun Jul 11, 2021 9:24 pm)
Dave
The Spin Doctor ™
uǝǝɹɔs ɹnoʎ ʇɹǝʌuı ǝsɐǝld :ɹoɹɹǝ
User avatar
MadTaz
Club Member
Club Member
Posts: 2715
Joined: Mon Aug 03, 2009 8:27 pm
RX-8: PZ
Colour: Brilliant Black
Location: Ipswich
Has thanked: 54 times
Been thanked: 169 times

Re: 400whp turbo setup from NZ

Post by MadTaz »

warpc0il wrote:
Thu May 06, 2021 11:43 pm
Brettus wrote:
Thu May 06, 2021 10:28 pm
Also to warpcoil : can't post on Chrisholmes's thread without joining (haven't decided if I will yet). Have discussed it with him off site though.
If it helps with your decision, any member of the OC is now allowed to advertise, for both privates sales and "trading", on the forum, whereas guests are not... :D

:welcome: anyway
And guests it seems
15th year of ownership and still here :)
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

If I have anything to sell ,which I don't currently (and may not ever) I'll def join.
These users thanked the author Brettus for the post (total 5):
ChrisHolmes (Fri May 07, 2021 11:41 am) • MadTaz (Fri May 07, 2021 12:08 pm) • GreySilver Beast (Fri May 07, 2021 2:42 pm) • warpc0il (Fri May 07, 2021 3:55 pm) • Shagrington (Sat May 08, 2021 4:12 am)
User avatar
ChrisHolmes
Club Member
Club Member
Posts: 28281
Joined: Sun Jan 29, 2006 10:04 pm
Location: Cheltenham
Has thanked: 2567 times
Been thanked: 940 times

Re: 400whp turbo setup from NZ

Post by ChrisHolmes »

Brettus wrote:
Fri May 07, 2021 11:38 am
If I have anything to sell ,which I don't currently (and may not ever) I'll def join.
Having got this far with your kit development I doubt you won’t make sales as there seems to be a hunger currently amongst a new generation of RX8 owners now that turbo and associated systems and design technology and has improved significantly from the historic days of “that’s a nice big turbo, I will weld a flange onto the exhaust and see how it goes”
Not suggesting you or anyone in particular was ever guilty if that!
Rotary History;

Sep 2005-Aug 2006 EO55 XOL VR 231 New
Oct 2014-Mar 2019 OE06 EWJ VR 231
Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
Jun 2022-Apr 2023 TN07 JHD KURO Resurrected
Jun 2023-Jan2024 OV09 BFF Sparkling Black R3
Avatar courtesy of my grandson Cameron
User avatar
SprintRX8
Club Member
Club Member
Posts: 575
Joined: Sat Dec 15, 2018 8:47 pm
RX-8: 231
Location: Sutton Surrey.
Has thanked: 4 times
Been thanked: 50 times

Re: 400whp turbo setup from NZ

Post by SprintRX8 »

Only problem is shipping and any import duties from any where overseas.
What would that add to the cost.

Not that I need a turbo kit as I’m going self build SuperCharged.
13BLT Renesis Rotary powered Dolomite Sprint in the making😏.
Balanced Lightened and Tweaked.and Supercharged.
User avatar
warpc0il
Spin Doctor
Spin Doctor
Posts: 32532
Joined: Sat Sep 06, 2008 10:56 pm
RX-8: 231
Colour: Lightning Yellow
Location: Groomsport, Co Down, NI
Has thanked: 444 times
Been thanked: 2080 times

Re: 400whp turbo setup from NZ

Post by warpc0il »

As demonstrated by our compression tester group buy from Australia, import duties can be unpredictable and sometimes painful.

Carriers act as the collectors for the tax authorities and are highly inconsistent in their interpretation of the rules, even the same products, with the same description, via the same carriers, to various addresses in the same countries; anything from zero to +40% of the value and shipping cost.

The carriers also charge a fee to collect this money, only adding to the ransom, before they release your package.

At least NZ is now on a level playing field with the rest of the world, including the EU.

The physical shipping charges from AUS/NZ are surprisingly reasonable, until you get beyond particular weight/size limits, then they just go through the roof.

The trick would be to only source the bespoke parts from the other side of the world, while making-up the complete package using a pick-list of more locally sourced elements.
These users thanked the author warpc0il for the post (total 3):
Brettus (Fri May 07, 2021 7:23 pm) • ChrisHolmes (Fri May 07, 2021 8:18 pm) • Milos_Balunovic (Sun Jul 11, 2021 9:26 pm)
Dave
The Spin Doctor ™
uǝǝɹɔs ɹnoʎ ʇɹǝʌuı ǝsɐǝld :ɹoɹɹǝ
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

ChrisHolmes wrote:
Fri May 07, 2021 11:46 am
Having got this far with your kit development I doubt you won’t make sales
Well, I still have to make and test the cast version of my handbuilt manifold yet. Only If that all goes well , will I make some.
Doing this kind of thing was never on the radar for me when I started. But when I realised how well it performs and how great the packaging/heat management is vs what else is out there ..... I thought it was worth pursuing.

I'm actually really looking forward to the testing. Added bonus : my accountant informs me it's all going to be tax deductable, so I'll be testing like there is no tomorrow :D
These users thanked the author Brettus for the post (total 3):
30405 (Fri May 07, 2021 8:06 pm) • ChrisHolmes (Fri May 07, 2021 8:19 pm) • v-rex (Fri May 07, 2021 9:13 pm)
User avatar
Lemon
Club Member
Club Member
Posts: 2687
Joined: Wed Nov 30, 2016 4:08 pm
RX-8: 231
Colour: Winning Blue
Location: Wiltshire
Has thanked: 10 times
Been thanked: 57 times

Re: 400whp turbo setup from NZ

Post by Lemon »

Brettus wrote:
Fri May 07, 2021 7:57 pm
ChrisHolmes wrote:
Fri May 07, 2021 11:46 am
Having got this far with your kit development I doubt you won’t make sales
Well, I still have to make and test the cast version of my handbuilt manifold yet. Only If that all goes well , will I make some.
Doing this kind of thing was never on the radar for me when I started. But when I realised how well it performs and how great the packaging/heat management is vs what else is out there ..... I thought it was worth pursuing.

I'm actually really looking forward to the testing. Added bonus : my accountant informs me it's all going to be tax deductable, so I'll be testing like there is no tomorrow :D
that's excellent, you just need to find more things to "test" :D
Thanks, Stu

Mad as anything
User avatar
mrspiller
Club Member
Club Member
Posts: 4245
Joined: Wed Dec 02, 2015 7:04 pm
RX-8: 231
Colour: Copper Red
Location: Hengoed - South Wales
Has thanked: 113 times
Been thanked: 158 times

Re: 400whp turbo setup from NZ

Post by mrspiller »

Welcome
Brett - I know you helped in the development on Gary’s car - flameshades - years ago
I might need some advice


Sent from my iPhone using Tapatalk
These users thanked the author mrspiller for the post:
Brettus (Sat May 08, 2021 5:55 pm)
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

mrspiller wrote:
Sat May 08, 2021 10:13 am
Welcome
Brett - I know you helped in the development on Gary’s car - flameshades - years ago
I might need some advice ImageImage


Sent from my iPhone using Tapatalk
Yeah. I've tuned a few turbo 8s in the UK now. PM me
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

Looks like I may have sold my G30-660 1.01 vband turbo and fabricated manifold. This makes way for me to purchase a turbo specially for the new cast manifold.
It will be a G30-660 with a T3 0.83 . The current turbo already has possibly the quickest spoolup we have yet seen on a 350+ Renesis (16psi by 3600) ...the new one is going to beat that by a decent margin while still making 400whp.
Will also be trialing some CNCd Renesis low compression rotors ...it's gunna be wild!
These users thanked the author Brettus for the post:
bigpete8 (Mon May 10, 2021 7:46 am)
350matt
Club Member
Club Member
Posts: 3158
Joined: Mon May 15, 2017 9:09 pm
RX-8: 231
Colour: Strato Blue
Location: Northants
Has thanked: 29 times
Been thanked: 327 times

Re: 400whp turbo setup from NZ

Post by 350matt »

what material are the rotors going to be ? Steel instead of cast iron ? or ally with steel gears ?

as I've long thought an ally rotor would give some big benefits if it can hang together

or even Titanium perhaps
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

Just modified stock rotors.
350matt
Club Member
Club Member
Posts: 3158
Joined: Mon May 15, 2017 9:09 pm
RX-8: 231
Colour: Strato Blue
Location: Northants
Has thanked: 29 times
Been thanked: 327 times

Re: 400whp turbo setup from NZ

Post by 350matt »

are you planning to change the shape of the bath-tub / combustion chamber ? as I've long thought a tapered chamber would work better

just come across this which makes interesting reading
combustionChamberdesignEffectontheRotaryenginePerformanceAReview.pdf
You do not have the required permissions to view the files attached to this post.
User avatar
MadTaz
Club Member
Club Member
Posts: 2715
Joined: Mon Aug 03, 2009 8:27 pm
RX-8: PZ
Colour: Brilliant Black
Location: Ipswich
Has thanked: 54 times
Been thanked: 169 times

Re: 400whp turbo setup from NZ

Post by MadTaz »

Brettus wrote:
Mon May 10, 2021 7:24 am
Looks like I may have sold my G30-660 1.01 vband turbo and fabricated manifold. This makes way for me to purchase a turbo specially for the new cast manifold.
It will be a G30-660 with a T3 0.83 . The current turbo already has possibly the quickest spoolup we have yet seen on a 350+ Renesis (16psi by 3600) ...the new one is going to beat that by a decent margin while still making 400whp.
Will also be trialing some CNCd Renesis low compression rotors ...it's gunna be wild!
Brett glad to see you moving more towards drivability rather than all out power, the smaller AR will certainly help with that, very much the approach of the RRP system :) Lowering the threshold and hence reducing system lag can only ever be a good thing making the car better mannered, more punchy and closer to that OEM+ feel we all want.

For those looking at the boost pressure quoted in PSI, please note that comparing boost pressure from one turbo compressor to the next or even a supercharger is not possible, boost pressure in terms of system power is irrelevant and what matters is Total System Flow not pressure.
15th year of ownership and still here :)
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

350matt wrote:
Mon May 10, 2021 12:47 pm
are you planning to change the shape of the bath-tub / combustion chamber ? as I've long thought a tapered chamber would work better

just come across this which makes interesting reading
combustionChamberdesignEffectontheRotaryenginePerformanceAReview.pdf
No , there isn't enough material to do that even if I wanted to.
Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

MadTaz wrote:
Mon May 10, 2021 3:57 pm

Brett glad to see you moving more towards drivability rather than all out power, the smaller AR will certainly help with that, very much the approach of the RRP system :) Lowering the threshold and hence reducing system lag can only ever be a good thing making the car better mannered, more punchy and closer to that OEM+ feel we all want.
Agreed . That has always been my goal ...the widest possible power band. Most turbo Renesis setups fail miserably in this regard IMO.
User avatar
MightyCondor
Club Member
Club Member
Posts: 1899
Joined: Sat Jul 27, 2013 3:14 pm
RX-8: PZ
Colour: Brilliant Black
Location: Reading, Berks
Has thanked: 48 times
Been thanked: 60 times

Re: 400whp turbo setup from NZ

Post by MightyCondor »

So are those turbos going to be big enough to keep building power with a peak at the top end? I assume the redlines will be lowered compared to a n/a Renesis, but like any good rotary, it should still fun and worthwhile to rev it out.

Sent from my IN2013 using Tapatalk

Brettus
Non Member
Non Member
Posts: 65
Joined: Thu May 06, 2021 2:54 am
RX-8: Turbo
Colour: Velocity Red
Location: Kiwi
Has thanked: 10 times
Been thanked: 76 times

Re: 400whp turbo setup from NZ

Post by Brettus »

MightyCondor wrote:
Mon May 10, 2021 7:07 pm
So are those turbos going to be big enough to keep building power with a peak at the top end? I assume the redlines will be lowered compared to a n/a Renesis, but like any good rotary, it should still fun and worthwhile to rev it out.

Sent from my IN2013 using Tapatalk
I assume you mean the G30-660 ? Yes they are plenty big enough . I already hit 415whp at 14.5psi with a lower exhaust backpressure than my old GTX3582 setup. People seem to struggle to understand these new G series turbos .............. they basically make the same power as the next size up old generation turbos but with better spool due to lower moi.
These users thanked the author Brettus for the post:
MightyCondor (Mon May 10, 2021 8:39 pm)