Mazdatrix Turbo Renesis
10-04-2010, 02:44 PM
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Mazdatrix Turbo Renesis
Our latest project has been the development of a turbo Renesis engine for our Redline Time Attack RX-8.
We have designed and built a new manifold and downpipe, and will utilize a Turbosmart wastegate and Turbonetics T4 turbo.
The Renesis has been machined here at Mazdatrix for the oversize stud kit that we sell. The stock rotors have had the apex seal grooves EDM’d to accept the taller and stronger 86-95 style apex seals. We will be using ceramic seals, and the rotors have also been side cut for extra clearance that is preferable in highly stressed engines.
The plan is for the engine to be on the dyno in the next couple of weeks - we will be busy this week with the Formula Drift finale at Irwindale Speedway - and then we will be on track in October 23-24 at Infineon Raceway for Redline Time Attack.
We have posted photos of the engine here: http://www.mazdatrixracing.com/?p=394
We have designed and built a new manifold and downpipe, and will utilize a Turbosmart wastegate and Turbonetics T4 turbo.
The Renesis has been machined here at Mazdatrix for the oversize stud kit that we sell. The stock rotors have had the apex seal grooves EDM’d to accept the taller and stronger 86-95 style apex seals. We will be using ceramic seals, and the rotors have also been side cut for extra clearance that is preferable in highly stressed engines.
The plan is for the engine to be on the dyno in the next couple of weeks - we will be busy this week with the Formula Drift finale at Irwindale Speedway - and then we will be on track in October 23-24 at Infineon Raceway for Redline Time Attack.
We have posted photos of the engine here: http://www.mazdatrixracing.com/?p=394
10-04-2010, 03:21 PM
#3
Are you using a Haltech Platinum Sport?
Also, could explain what's going on here with the manifold? Why did you choose to collect the exhaust in this way?
Also, could explain what's going on here with the manifold? Why did you choose to collect the exhaust in this way?
Last edited by arghx7; 10-04-2010 at 03:25 PM.
10-04-2010, 03:48 PM
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10-04-2010, 05:27 PM
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Looks amazing. I had a similar idea about a year ago but didn't have the funds to pursue it. Interested to see what kind of numbers this puts down.
I'd thought about using a shutter system to keep the peripheral exhaust ports closed at low RPMs for streetability. Packaging that with the manifold was the conceptual challenge I never sorted out though.
Looks absolutely wicked, love how clean it is. Can't wait to see it in the engine bay
Any mods to the motor mount? Looks kind of like you removed material to make the manifold fit?
I'd thought about using a shutter system to keep the peripheral exhaust ports closed at low RPMs for streetability. Packaging that with the manifold was the conceptual challenge I never sorted out though.
Looks absolutely wicked, love how clean it is. Can't wait to see it in the engine bay
Any mods to the motor mount? Looks kind of like you removed material to make the manifold fit?
Last edited by Salamanth; 10-04-2010 at 05:31 PM.
10-04-2010, 11:35 PM
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Yes, right side motor mount is modified.
We cut off the top part and replaced it with a steel (stainless to match the manifold) arc thing going from the outer upper part of the metal mount to the manifold flange. It is part of the manifold.
84-85 GSLSE 13B rotor housings. Done to remove the stress on the side exhaust port edges. The heat of boosted engines is a real problem there as the casting is so thin. The metal of the port edge actually rises up and contacts the corner seal, which then damages the side housing(s). We have seen this on our own engine and on customer engines.
The "plan" is to have the majority of the exhaust heat go out the peripheral exhaust ports and relieve the stress on the side exhaust ports. Great theory -- hope it works.
Should sound really interesting.
Car, with turbo, will be on display in the Mazda booth at the Formula D finale at Irwindale this weekend (Thursday - Saturday 10/7-9) if anyone is in the area.
We are fabricating all the intake piping over the next 1 1/2 weeks (minus the display time). The engine - oversize studded, EDM'd apex seal grooves, ceramic seals, etc. should be ready for installation next week?
The Haltech Sprint-RE has been working fine, but we are changing over to a Platinum 1000 to gain more control of all the turbo extras.
If all goes well, then to the chassis dyno, then off to Infineon Raceway 10/23-24 for the Redline Time Attack.
We cut off the top part and replaced it with a steel (stainless to match the manifold) arc thing going from the outer upper part of the metal mount to the manifold flange. It is part of the manifold.
84-85 GSLSE 13B rotor housings. Done to remove the stress on the side exhaust port edges. The heat of boosted engines is a real problem there as the casting is so thin. The metal of the port edge actually rises up and contacts the corner seal, which then damages the side housing(s). We have seen this on our own engine and on customer engines.
The "plan" is to have the majority of the exhaust heat go out the peripheral exhaust ports and relieve the stress on the side exhaust ports. Great theory -- hope it works.
Should sound really interesting.
Car, with turbo, will be on display in the Mazda booth at the Formula D finale at Irwindale this weekend (Thursday - Saturday 10/7-9) if anyone is in the area.
We are fabricating all the intake piping over the next 1 1/2 weeks (minus the display time). The engine - oversize studded, EDM'd apex seal grooves, ceramic seals, etc. should be ready for installation next week?
The Haltech Sprint-RE has been working fine, but we are changing over to a Platinum 1000 to gain more control of all the turbo extras.
If all goes well, then to the chassis dyno, then off to Infineon Raceway 10/23-24 for the Redline Time Attack.
10-05-2010, 01:59 AM
#17
Damn, this idea seems to be more apparent than I thought 
from a theoretical turbo performance perspective it makes sense. It will be interesting to see how it plays out in reality. Assuming no port timing mods:
Primary intake opens 3 deg ATDC
Secondary intake opens 12 deg ATDC
Auxiliary intake opens 38 deg ATDC
Primary intake closes 65 deg ABDC
Secondary intake closes 36 deg ABDC
Auxiliary intake closes 80 deg ABDC
Peripheral exhaust opens 71 deg BBDC
Side exhaust opens 50 deg BBDC
Side exhaust closes 3 deg BTDC
Peripheral exhaust closes 48 deg ATDC
from a theoretical turbo performance perspective it makes sense. It will be interesting to see how it plays out in reality. Assuming no port timing mods:Primary intake opens 3 deg ATDC
Secondary intake opens 12 deg ATDC
Auxiliary intake opens 38 deg ATDC
Primary intake closes 65 deg ABDC
Secondary intake closes 36 deg ABDC
Auxiliary intake closes 80 deg ABDC
Peripheral exhaust opens 71 deg BBDC
Side exhaust opens 50 deg BBDC
Side exhaust closes 3 deg BTDC
Peripheral exhaust closes 48 deg ATDC
10-05-2010, 11:12 AM
#21
i feel somewhat vindicated
I started a thread about adding the P port to the renasis and it was shot down.
Old news.
Very, very, sweet, sick and solid looking engine you got there dudes!
Adding a steel part to the upper part of the MM? Did you fill the insides with hockey pucks?
Those 3" header pipes??
Use rx7 rotors?
power goal range estimate?
Stay away from 9K without more eshaft and rotor work?
Water meth is your friend--can you use it? Even just water will help--right?
Sorry--too many questions--i just get excited seeing that damn thing!
Really nice.
OD
I started a thread about adding the P port to the renasis and it was shot down.
Old news.
Very, very, sweet, sick and solid looking engine you got there dudes!
Adding a steel part to the upper part of the MM? Did you fill the insides with hockey pucks?
Those 3" header pipes??
Use rx7 rotors?
power goal range estimate?
Stay away from 9K without more eshaft and rotor work?
Water meth is your friend--can you use it? Even just water will help--right?
Sorry--too many questions--i just get excited seeing that damn thing!
Really nice.
OD
