425rwhp GT35R powered Rx-8 @ 10psi
#1
425rwhp GT35R powered Rx-8 @ 10psi
Finished up our new turbo system for the Rx-8s.
Stock block, AI was not turned on.
Cobb accessport tuned by MazdaManiac
First dyno sheet is with the AUX ports wired open
Second is an overlay between aux ports wired shut and open, lower figures are wired shut. With the aux ports operated by the ECU its the best of both worlds, nice torque curve and decent power up top.
Kinda interesting showing the relationship between having the aux ports open and closed. This is what we have always seen on Rx-7s too, more intake duration means less power down low, and a lot more up top.
Stock block, AI was not turned on.
Cobb accessport tuned by MazdaManiac
First dyno sheet is with the AUX ports wired open
Second is an overlay between aux ports wired shut and open, lower figures are wired shut. With the aux ports operated by the ECU its the best of both worlds, nice torque curve and decent power up top.
Kinda interesting showing the relationship between having the aux ports open and closed. This is what we have always seen on Rx-7s too, more intake duration means less power down low, and a lot more up top.
#2
Sharp Claws
iTrader: (30)
nice numbers but i would probably run the AI regardless on such a high compression engine, seen too many turbo 8's turn to bricks to think otherwise. also sucks that the 6 speed is a hand grenade with the pin pulled waiting to explode when modding the cars, did you swap it with a turbo transmission or did the 6 speed manage to hold up on the dyno?
had a few people asking about turboing their 8's lately, how much are you building your setup for and what is included?
had a few people asking about turboing their 8's lately, how much are you building your setup for and what is included?
Last edited by RotaryEvolution; 01-11-11 at 05:42 PM.
#4
nice numbers but i would probably run the AI regardless on such a high compression engine, seen too many turbo 8's turn to bricks to think otherwise. also sucks that the 6 speed is a hand grenade with the pin pulled waiting to explode when modding the cars, did you swap it with a turbo transmission or did the 6 speed manage to hold up on the dyno?
had a few people asking about turboing their 8's lately, how much are you building your setup for and what is included?
had a few people asking about turboing their 8's lately, how much are you building your setup for and what is included?
Our tier one kit is $6499 and includes the following;
# A T4 60 Trim Garrett To4E turbocharger offers extremely fast spool and a top end that never runs out of airflow.
# Our 3 into 1 custom made 321SS turbo manifold outperforms log style manifolds offering better response and a broader torque curve.
# A custom steel motor mount bracket to accommodate our free flowing turbo manifold.
# A TiAL MVS 38mm v-band waste gate and an open dump tube.
# A 3" 304SS downpipe that employs a 3" flex bellow for engine movement.
# Custom Stainless oil & coolant feed/return hard lines are included to eliminate heat related failures of commonly used rubber hose.
# A custom fabricated front mounted intercooler using a genuine Garrett Core. It includes T-bolt clamps with high quality silicone couplers.
# An oil metering pump block off kit & relocation bracket.
# A coolant surge tank relocation bracket.
# A protective 3M Gentex wiring harness thermal sleeve.
# A custom aluminum thermostat upper and lower hard line assembly is included to prevent heat related failures of the turbo system by eliminating vulnerable stock rubber counterparts. A new lower radiator hose is included.
# An ambient air intake system featuring a recirculated blow off valve that is designed to ensure proper mass air flow sensor operation and the highest possible flow characteristics.
# A Walbro 255lph drop in fuel pump, and fuel injector modification service is included. This service satisfies fuel requirements for 400whp and requires core injectors up front for modification.
# New Leading 9 heat range spark plugs
http://www.turblown.net/store/index.php?productID=81
Trending Topics
#10
No money. No love.
iTrader: (12)
Join Date: Jul 2004
Location: SACRAMENTO
Posts: 2,807
Likes: 0
Received 0 Likes
on
0 Posts
I lost a small amount of power using the water injection without a change in tune on my car, but that's expected. I just like the safety factor
Btw....****** Unicorn! A Renesis making power??
Btw....****** Unicorn! A Renesis making power??
#12
A small vid. We have quite a bit of footage to edit still.
http://www.youtube.com/watch?v=dk-KNwf3L30
http://www.youtube.com/watch?v=dk-KNwf3L30
#20
rotorhead
iTrader: (3)
What was the correction factor on this dyno? Altitude? Ambient temperature?
It doesn't surprise me that you picked up so much more power and torque with the aux ports open. Years ago on my nonturbo s4 I picked up about 20whp/15wtq doing a similar test. I think it's crazy that people on Rx-8 forums think closing the aux ports is a viable idea to get around potential tuning issues when the sleeves open. I'd rather run with the aux ports always open. A 6 port engine running on 4 ports is far inferior to an actual 4 port engine that was engineered for a turbo. You might as well do a VTEC delete on a turbo Civic.
Now let me ask you this. When you ran with the aux ports closed, what about the secondary shutter valve? How did that factor into the test? Did you control the aux ports using the ECU or manually do something to them?
It doesn't surprise me that you picked up so much more power and torque with the aux ports open. Years ago on my nonturbo s4 I picked up about 20whp/15wtq doing a similar test. I think it's crazy that people on Rx-8 forums think closing the aux ports is a viable idea to get around potential tuning issues when the sleeves open. I'd rather run with the aux ports always open. A 6 port engine running on 4 ports is far inferior to an actual 4 port engine that was engineered for a turbo. You might as well do a VTEC delete on a turbo Civic.
Now let me ask you this. When you ran with the aux ports closed, what about the secondary shutter valve? How did that factor into the test? Did you control the aux ports using the ECU or manually do something to them?
#22
AUX ports closed AFR/BOOST
Boost peaks at about 11.8 or so, scale is not the same as AFR...
I attached a photo of another Rx-8 turbo system we built. It has a GTX4294R, NRS seals, autotronic ECU, Return fuel system etc. Plan is to find the limit of the engine.
Boost peaks at about 11.8 or so, scale is not the same as AFR...
I attached a photo of another Rx-8 turbo system we built. It has a GTX4294R, NRS seals, autotronic ECU, Return fuel system etc. Plan is to find the limit of the engine.
#23
Rotary Enthusiast
iTrader: (12)
Excellent results. Nice to see a Rx-8 with over 400rwhp Too bad the engine is a thermal heat ball. The pic with of the larger turbo Rx-8 looks awesome. That customer should drive around with no hood. lol. Question- On the chart with boost and afr, where is the scale for boost? And if it peaks at 11.8psi looks like it would be 11.8psi at redline then. 12lbs is a bit more than 10lbs. Not trying to knock it, just pointing out info I am seeing.
#24
I don't know why there wasn't the boost scale on that. That is the run with the aux ports closed. When they open, and we hit the higher power, it lowered the boost to 10psi. This isn't even the turbo we plan on selling the kit with, and I don't really intend on selling it as X power @ Y boost, we all know dynos can read waaayyy differently than others.
I am curious to see how long it lasts. We did 6 hours of non-stop wot pulls, and probably 2 hours worth on the street. I did notice coolant temps start to creep up under full load/higher rpms with hard street driving. Car would need a lot of mods to withstand the road course or summer driving.
We will be dyno-ing another one we built next week to try and backup the results.
I am curious to see how long it lasts. We did 6 hours of non-stop wot pulls, and probably 2 hours worth on the street. I did notice coolant temps start to creep up under full load/higher rpms with hard street driving. Car would need a lot of mods to withstand the road course or summer driving.
We will be dyno-ing another one we built next week to try and backup the results.
#25
Rotary Enthusiast
iTrader: (12)
I don't know why there wasn't the boost scale on that. That is the run with the aux ports closed. When they open, and we hit the higher power, it lowered the boost to 10psi. This isn't even the turbo we plan on selling the kit with, and I don't really intend on selling it as X power @ Y boost, we all know dynos can read waaayyy differently than others.
I am curious to see how long it lasts. We did 6 hours of non-stop wot pulls, and probably 2 hours worth on the street. I did notice coolant temps start to creep up under full load/higher rpms with hard street driving. Car would need a lot of mods to withstand the road course or summer driving.
We will be dyno-ing another one we built next week to try and backup the results.
I am curious to see how long it lasts. We did 6 hours of non-stop wot pulls, and probably 2 hours worth on the street. I did notice coolant temps start to creep up under full load/higher rpms with hard street driving. Car would need a lot of mods to withstand the road course or summer driving.
We will be dyno-ing another one we built next week to try and backup the results.