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Rx7 13bt help please. I just bought an rx8 with the rx7 13bt conversion in it.

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Rx7 13bt help please. I just bought an rx8 with the rx7 13bt conversion in it.

Old 11-10-18, 07:03 AM
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Rx7 13bt help please. I just bought an rx8 with the rx7 13bt conversion in it.

So my problem is that. When I bought the car she was totally out of tune. Over fueling big time wouldn't idle from flooding and throwing fuel smoke out the pipe as she starts up . She has a spitstronic fuel management system . She has gone in for tuning and repairs, but with loads of problems reported back that needs to be sorted before she can be tuned they said.
.She has stage 3 porting
.Knock off turbo t4[that I'm replacing with a brand turbo rated up to 750hp]
.spitstronic fuel system
​​​​​​. Bugger rx7 injectors and pump
​​​​​​. 3mm apex seals
. Complete 75mm straight through free flow exhaust
That's all I know for now . But my question is Whats the best set up for this car for what iv got going on at the moment ?
My plan is to throw some big numbers on the dyno.

Thanks
Please no dumb criticize comments
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Old 11-15-18, 10:02 PM
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What ecu you have controlling everything?
what whp numbers are you chasing?
is the engine healthy?
what turbo are you planning on running?
I think you have to sort the issues first and get it up and running with out going into putting too much cash meanwhile you do some research of components that you need to make the whp goal or you can start fresh picking up the components injectors, intercooler, oil cooler, water injection kit or e85 etc...
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Old 11-17-18, 04:02 PM
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This won't go well
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Old 11-17-18, 09:25 PM
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I am agree.. eventhough some people had done it. Better look on rx8 club. Rx8 is 3200lbs car and that's why I sold mine and got my fd.
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Old 11-25-18, 02:41 AM
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Note to self

Originally Posted by TwinCharged RX7 View Post
This won't go well
I specifically said no criticism on my post did I not? Or can't your read?
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Old 11-25-18, 04:42 AM
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The point is your post is very light on actual details so people assume you are an idiot who will pop the motor. If you had have taken a bit more time and been clearer in your post you wouldn't get that response. If you post like a knuckle head people will respond accordingly. You can't demand service from people donating their time with a shitty post.
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Old 11-25-18, 08:15 AM
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Cool story. Anyway Moving on from the peanut gallery. Anyone willing to assist with some ideas ect or help can please do so on my other post under the new member technical rx7 section in "RX8 with rx7 13bt conversion" where there's more details and pictures please do so will appreciate it thanks
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Old 11-25-18, 08:58 AM
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You will probably kill an rx8 gearbox behind a decent turbo motor, but it may last a while. I'm not sure if there are any domestic market cars there with t56 gearboxes but that would be the most reliable swap, green brother's in NZ do steel bellhousings to suit tremecs and i think sell kits for both 5 and 6 speeds. What fuel do you intend to run? Does it have high flowed factory injectors all around (~1100/1300 numbers being claimed in aus but spray patterns not great, i have high flowed secondaries in mine) or just factory secondaries in a skimmed primary rail? You will likely need to go to at least an aftermarket secondary rail and injectors to go near using "750"hp (piston engine) worth of air, on a rotary that is more like a power limit of 550hp so you are aware. To make that power on an extend port you will almost certainly need an ignition upgrade, and either race hydrocarbon based fuel, ethanol/methanol fuel or mix or be running some form of water injection. If you haven't bought a turbo yet I would look to larger turbine ARs, personally I would prefer borg warner or garrett too. Fine wire irridium spark plugs in a cold heat range should be the most reliable and safest bet too. I would try to box the air filter and feed it cool air, a lower temp thermostat (and fan switch points) can improve bottom end torque too.

Last edited by Slides; 11-25-18 at 06:46 PM.
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