Can I Boost The RX-8 To 500 HP
Registered
Joined: Apr 2003
Posts: 9,134
Likes: 26
From: Houston
Originally Posted by RX8PR
The car makes 392HP at the wheel, that is near 479HP at the flywheel.
Keep us posted on the numbers the car puts down. It's exciting to see Renesis numbers this high. Good job.
Registered
Joined: Feb 2004
Posts: 2,390
Likes: 0
From: Lewisville, TX
Originally Posted by RX8PR
Ok guys..................this is a project that is 90% done.
Here in Puerto Rico my mechanic is working on another RX8 and last Saturday he finally put the car on the dyno. The car makes 392HP at the wheel, that is near 479HP at the flywheel. This is a RENESIS engine running 19 psi of boost with a Garret ball bearing turbine GT35, 850cc injectors, fuel rails, Tial waste gate, ACT clutch, Walbro fuel pump,etc., etc.
The car is not finished yet.................
He needs to work on a few cosmetic things.
He has near 9 months working on this project, He needed to make the manifold and a lot of other custom made parts. The car has only 1,600 miles, the owner is another freak Puerto Rican like me that loves rotaries he buy it and send it immediately to the shop.
I know that everyone would be asking for the dyno sheet and pictures, on Wednesday afternoon or Thursday morning I need to pick up my car and I would take a few pictures and a copy of the dyno sheets.
We spec to hit the 300HP on my car actually makes a modest 273HP compare to the other RX8. We're installing a turbonetic evolution waste gate to try to resolve the problem with the boost.
Manuel
Here in Puerto Rico my mechanic is working on another RX8 and last Saturday he finally put the car on the dyno. The car makes 392HP at the wheel, that is near 479HP at the flywheel. This is a RENESIS engine running 19 psi of boost with a Garret ball bearing turbine GT35, 850cc injectors, fuel rails, Tial waste gate, ACT clutch, Walbro fuel pump,etc., etc.
The car is not finished yet.................
He needs to work on a few cosmetic things.
He has near 9 months working on this project, He needed to make the manifold and a lot of other custom made parts. The car has only 1,600 miles, the owner is another freak Puerto Rican like me that loves rotaries he buy it and send it immediately to the shop.
I know that everyone would be asking for the dyno sheet and pictures, on Wednesday afternoon or Thursday morning I need to pick up my car and I would take a few pictures and a copy of the dyno sheets.
We spec to hit the 300HP on my car actually makes a modest 273HP compare to the other RX8. We're installing a turbonetic evolution waste gate to try to resolve the problem with the boost.
Manuel
What are they using for internals (seals, rotors and such)?
What port work has been done?
What are they using for tuning?
Water injection?
19psi is a LOT of boost..
Registered User
Joined: Feb 2005
Posts: 607
Likes: 0
From: Manati, Puerto Rico
19 psi looks like a lot but I saw cars on the race track running with 30-35 psi of boost.
Tuning is the kee on this proyect.
No port yet.
Factory seals.
Factory Rotors.
For respect to the mechanic I can't give you the type of ECU he is using (this is business for this guys). I'm going to wait a few weeks until see how this car respond on the street.
If everything goes Ok, I would install the same ECU on my car but before need to change injectors and install fuel rails.
This is a 9 month project and the already spend $16,000.00 and still counting..............
If the engine can handle this boost, I don't know but let see what happen with the time.
He is using knock sensors and they are controlling ignition time on each spark.
This mechanic know rotary engines, he is the local Racing Beat dealer.
Manuel
Tuning is the kee on this proyect.
No port yet.
Factory seals.
Factory Rotors.
For respect to the mechanic I can't give you the type of ECU he is using (this is business for this guys). I'm going to wait a few weeks until see how this car respond on the street.
If everything goes Ok, I would install the same ECU on my car but before need to change injectors and install fuel rails.
This is a 9 month project and the already spend $16,000.00 and still counting..............
If the engine can handle this boost, I don't know but let see what happen with the time.
He is using knock sensors and they are controlling ignition time on each spark.
This mechanic know rotary engines, he is the local Racing Beat dealer.
Manuel
Registered
Joined: Feb 2004
Posts: 2,390
Likes: 0
From: Lewisville, TX
Originally Posted by RX8PR
19 psi looks like a lot but I saw cars on the race track running with 30-35 psi of boost.
Tuning is the kee on this proyect.
No port yet.
Factory seals.
Factory Rotors.
For respect to the mechanic I can't give you the type of ECU he is using (this is business for this guys). I'm going to wait a few weeks until see how this car respond on the street.
If everything goes Ok, I would install the same ECU on my car but before need to change injectors and install fuel rails.
This is a 9 month project and the already spend $16,000.00 and still counting..............
If the engine can handle this boost, I don't know but let see what happen with the time.
He is using knock sensors and they are controlling ignition time on each spark.
This mechanic know rotary engines, he is the local Racing Beat dealer.
Manuel
Tuning is the kee on this proyect.
No port yet.
Factory seals.
Factory Rotors.
For respect to the mechanic I can't give you the type of ECU he is using (this is business for this guys). I'm going to wait a few weeks until see how this car respond on the street.
If everything goes Ok, I would install the same ECU on my car but before need to change injectors and install fuel rails.
This is a 9 month project and the already spend $16,000.00 and still counting..............
If the engine can handle this boost, I don't know but let see what happen with the time.
He is using knock sensors and they are controlling ignition time on each spark.
This mechanic know rotary engines, he is the local Racing Beat dealer.
Manuel
That's why I asked about the internals and rotors.
Registered User
Joined: Feb 2005
Posts: 607
Likes: 0
From: Manati, Puerto Rico
Time would tell us if the factory seals and rotors can hadle that boost.
Of course that when the 9:1 rotors would be available for the RENESIS
they are goin to install them on this engine.
Thanks,
Manuel
Of course that when the 9:1 rotors would be available for the RENESIS
they are goin to install them on this engine.
Thanks,
Manuel
port hacker
Joined: Nov 2004
Posts: 1,275
Likes: 0
From: socal
i don't think the rotors or the seals are the problem...if the older motors handle it, why not the newer ones?
one thing i'd touch on is try to be really conservative with the tuning--even if you eat some hp. do the glory run on the dyno, then back off. with the side exhaust ports, there's nowhere for the broken pieces of apex seal to go (if one breaks), so at the very least, you're replacing the rotor and housing and possibly even one or both of the side housings if it gets bad enough.
props to your mechanic though!!
one thing i'd touch on is try to be really conservative with the tuning--even if you eat some hp. do the glory run on the dyno, then back off. with the side exhaust ports, there's nowhere for the broken pieces of apex seal to go (if one breaks), so at the very least, you're replacing the rotor and housing and possibly even one or both of the side housings if it gets bad enough.
props to your mechanic though!!
Registered User
Joined: Feb 2005
Posts: 607
Likes: 0
From: Manati, Puerto Rico
In the afternoon I visit the shop and my car is not finished yet!
But I take some pictures of both cars.............(the red one is mine 273HP , the blue one is the one with 392HP)
Here is some pictures of the work that I'm talking about........
I'm really proud of our shop "El Psiquiatra" in English "The Psychiater"
Enjoy!
Manuel
But I take some pictures of both cars.............(the red one is mine 273HP , the blue one is the one with 392HP)
Here is some pictures of the work that I'm talking about........
I'm really proud of our shop "El Psiquiatra" in English "The Psychiater"
Enjoy!
Manuel
Registered
Joined: Feb 2004
Posts: 2,390
Likes: 0
From: Lewisville, TX
Originally Posted by RX8PR
The cars are using 93 octane gas........
No problems with detonations.
Manuel
No problems with detonations.
Manuel
Ok.. wow.. someone told me once that rotary engine builders from PR were insane.. they were right, lol.
Man.. my rule has always been that i'm making too much power the moment i cant use pump gas anymore...
that's still insane.
Registered
Joined: Feb 2004
Posts: 2,390
Likes: 0
From: Lewisville, TX
you also probably ported the engine.
i know don marvel down here got an FC up to 465 rwhp with only 16 psi and a large street port...
this engine is stock inside.. that's why it's so amazing..
i know don marvel down here got an FC up to 465 rwhp with only 16 psi and a large street port...
this engine is stock inside.. that's why it's so amazing..
Registered
Joined: Apr 2003
Posts: 9,134
Likes: 26
From: Houston
The Renesis auxillary ports are open as late as 80 degrees. Even a large streetport still closes around 70 degrees. What's so amazing? Go compare a stock T-II RX-7 to a 6 port RX-7 that has a stock T-II turbo equipped to it running the same boost. The 6 port engine will make alot more power. It's not so much the physical size of the ports but rather the high velocity of the smaller but longer timed ports that lets them work so well.
Registered User
Joined: Feb 2005
Posts: 607
Likes: 0
From: Manati, Puerto Rico
guitarjunkie
Yep, he removed the actuators.
Also they removed the electronic throttle and the car "opens" like a beast.
Also He is using the 6 injectors all the time.
The mechanic has plans to lower the boost to 15 psi and keep the car running
near 350 HP for a few weeks to be sure that everything is working without problem.
Then increase boost............The goal is to make 450HP at the wheel.
Ajax,
Yep, rotary mechanic's in the island are insane....you can go to the race track and
see that the fastest cars are rotaries.
In Puerto Rico we have a Rotary Museum!
visit www.mazdapr.com and click on Mazda Expo (sorry but is in Spanish)
This Sunday is a "Dyno day" on the shop only for cars with rotary engines.
They compete for $$$. I'm not going to compete but It's probably that I be there.
Let's see who makes more HP and win!
Manuel
Yep, he removed the actuators.
Also they removed the electronic throttle and the car "opens" like a beast.
Also He is using the 6 injectors all the time.
The mechanic has plans to lower the boost to 15 psi and keep the car running
near 350 HP for a few weeks to be sure that everything is working without problem.
Then increase boost............The goal is to make 450HP at the wheel.
Ajax,
Yep, rotary mechanic's in the island are insane....you can go to the race track and
see that the fastest cars are rotaries.
In Puerto Rico we have a Rotary Museum!
visit www.mazdapr.com and click on Mazda Expo (sorry but is in Spanish)
This Sunday is a "Dyno day" on the shop only for cars with rotary engines.
They compete for $$$. I'm not going to compete but It's probably that I be there.
Let's see who makes more HP and win!
Manuel
Spin Triangles! Spin!
Joined: Mar 2005
Posts: 827
Likes: 0
From: Texas, US
Last edited by dmorales; Sep 9, 2011 at 01:46 AM.