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I've only gotten them up to 225, +/- 3.
That is with the MS/AEM intake, custom header, exhaust and the AccessPORT. There might be some that are higher, but that is my best "consistent" number (meaning, it hit more than once on the same motor at different dynos and on different days). |
Originally Posted by MazdaManiac
(Post 2591301)
I've only gotten them up to 225, +/- 3.
That is with the MS/AEM intake, custom header, exhaust and the AccessPORT. . |
Originally Posted by Brettus
(Post 2591319)
did you get a look at the header - what was the design ?
Long. Very, very long. |
like all the way back to the muffler long ...... How many pipes ?
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Three pipes, collector ended where the back of the CAT would be.
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hmmmm - that's what Hymee did to good effect a couple of years ago ....
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N/A power on rx8
So.. without getting shot down for not doing a good search,--- How many and how much more power gain in doing porting-- opening up the std ports, and adding a bridge port??.
Some one in the rx7 forum (a few years ago) removed a Lot of metal (meat) off the sides of the rotor--so that the ports were opening sooner, and closeing later, has this been tryed on the rx8?? Didn't Scoot get something like 700 + ps out of a combo port (both side and P.Ports) on a Batman?? has anyone try that?? |
pipes
Originally Posted by MazdaManiac
(Post 2591329)
Three pipes, collector ended where the back of the CAT would be.
Were these (are) on the Market? , or were these pipes Custom made?? |
The water jackets on a Renesis are too close to the ports for any serious porting. You can smooth and alter the path slightly, but that's about it.
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my car is making 330rwhp with 433 tq. I recently installed a VTEC with ETCS y0
:lol: Team's Rx-8 has AC delete. So its not surprise that he has the highest hp around :) |
beve lrotors
[QUOTE=rx8 man;2591478]So.. without getting shot down for not doing a good search,--- How many and how much more power gain in doing porting-- opening up the std ports, and adding a bridge port??.
Some one in the rx7 forum (a few years ago) removed a Lot of metal (meat) off the sides of the rotor--so that the ports were opening sooner, and closeing later, has this been tryed on the rx8?? Didn't Scoot get something like 700 + ps out of a combo port (both side and P.Ports) on a Batman?? has anyone try that??[/QUOTE Just been looking on rx7 forum, found the posts by the guy, most of the pics are gone, bar a few. |
Originally Posted by Flashwing
(Post 2591295)
I would agree as real world performance value is really the big picture we are interested in, though since I am pushing an N/A setup and my nitrous is 6 months (or longer) out...this topic is of interest to me.
At least with regards to the accessport, there hasn't been any attempts to mess with timing. I'm looking to get some dyno time as soon as the weather here in Phoenix cools down. I would really like to see 220whp N/A with intake, full exhaust, and ignition coil upgrades. I have smaller stuff like the agency power pulley and lightweight:lol2: alternator and water pump pulleys as well. Anyway, it's all talk at this point but once I have some hard numbers I'll be eager to share them. Either way, I want to be at the dyno next time! No more secret dyno meets! |
bevel rotors
One of the guys on rx7 club, who beveled his rotors got back to me, here are the pics he sent to me.
Could this type of thing work on the rx8 13b? Thanks for the info and pics justin :) |
Originally Posted by chickenwafer
(Post 2591928)
I think you could get there, Todd, it will just require a lot of time and money. You may be able to go higher (as shown by my math) if you do porting and can increase the effective volumetric efficiency.
Either way, I want to be at the dyno next time! No more secret dyno meets! I imagine my best would be with an intake/headers/exhaust combo with a lightweight flywheel setup. Add some tuning and an ignition upgrade to that mix and that would be about it. |
For max power, one of the incremental steps is a good premix.
Racing Beat dyno'ed 4 h.p. with a 75:1 ratio....... Quote - While undertaking development work on the RX-8 Renesis engine for SCCA T2/T3 use, we decided to introduce extra oil into the fuel to monitor the effect. To our surprise, this additional oil increased power! Further dyno testing found that by adding 10 oz. of Royal Purple 2-Stroke Oil to 6 gallons of fuel, we gained an average of 1.7 HP from 2000-9000 RPM, along with an increase in peak power of 4 HP. We validated this increase by changing back to a “non-oiled” fuel - and the power returned to the previous level. Later, we tried the same test with another brand of synthetic oil with nearly the same results. For racing applications, the addition of a high quality synthetic oil increases power and most certainly decreases wear. The only negatives are the cost of the oil and an increase in the tendency to foul the spark plugs. S |
pre mixing
Cheers Stealth TL, I use to pre-mix with the 20b, but that was a case of having to, from what you have posted in the above text, you have made me thinkiabout looking into pre-mixing again. :)
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to me.. having a powerfull NA rotary is more bling than a turbo'd RX8..
Turbo charged cars come with their own issues that alot of N/A people dont come across. Boost creep Turbo lag Always being weary of the A/F ratio Turbo Cool down after every drive More things that can go wrong Heat Soak Just my opinion of course. |
There's more turbo lag on a NA rx-8 than a turbo one.
edit: on a properly sized turbo. :) |
Power to weight ratio, man.
Just strip the RX8 of 800 lbs and you're g2g. |
Originally Posted by mysql
(Post 2593341)
There's more turbo lag on a NA rx-8 than a turbo one.
edit: on a properly sized turbo. :) |
^^ lol, you know what he means :)
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Speedsource dyno'd 260hp at the crank on their ST class Renesis race engines. I think that's probably the number we should be shooting at without serious internal design changes.
Although it would be interesting to have some of the RX7 folks take a look at our Renesis rotors and see what they think. |
That is with the Bosch stand-alone engine management.
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So does that mean you can get more with the AP?:)
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Originally Posted by MazdaManiac
(Post 2593728)
That is with the Bosch stand-alone engine management.
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