NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   125 Shot on a 6 Port NA (https://www.nopistons.com/2nd-generation-specific-17/125-shot-6-port-na-55754/)

fc3s4utnv 12-16-2005 02:17 PM

Okay after doing some searching I am revising what I was thinking.



I belive it probably would hold up to a 125 or maybe evne a 150 shot. I wasnt thinking about it to clearly, I forgot volume has a big impact on nitrous, and a rotary will act like a v-6 or maybe even a small v8 with nitrous. I am curious to see if this will actually be the case and the "engine" will hold. The drivetrain, yes it will go sooner or later, thats alot of extra stress for the na drivetrain.



I would like to see some dyno results if anyone can find some on a rotary with nitrous, I am curious to see how much tq one can make on a 100 shot.

Stock Josh 12-16-2005 03:12 PM


Originally Posted by fc3s4utnv' post='787307' date='Dec 16 2005, 12:17 PM

Okay after doing some searching I am revising what I was thinking.



I belive it probably would hold up to a 125 or maybe evne a 150 shot. I wasnt thinking about it to clearly, I forgot volume has a big impact on nitrous, and a rotary will act like a v-6 or maybe even a small v8 with nitrous. I am curious to see if this will actually be the case and the "engine" will hold. The drivetrain, yes it will go sooner or later, thats alot of extra stress for the na drivetrain.



I would like to see some dyno results if anyone can find some on a rotary with nitrous, I am curious to see how much tq one can make on a 100 shot.





I amazed can even use the internet because you obviously dont know your a$$ from a hole in the ground.

fc3s4utnv 12-16-2005 03:37 PM

Wow, someone took their bitch pill, thanks for the input.

teknics 12-16-2005 05:09 PM

Find some PR guys dyno's, seriously they all run crazy N/A setups with huge shots of nitrous. it's like their thing to do. goopy told me of some sick setups.



kevin.

fc3s4utnv 12-16-2005 05:49 PM

I was talking to the guy I work for, I can get a NX wet efi kit for pretty damn cheap, and hell I get nitrous cheaper than dog ****.

RONIN FC 12-16-2005 05:55 PM


Originally Posted by teknics' post='787339' date='Dec 16 2005, 06:09 PM
Find some PR guys dyno's, seriously they all run crazy N/A setups with huge shots of nitrous. it's like their thing to do. goopy told me of some sick setups.



kevin.

Thats all you see (and hear) at the Import Wars in NH. Bridged, carbed, high rpm, and a whole lotta n2o. And of course the occasional trailer queen RX3 with a 4-link. You see PR guys running 11s with engines they built in their basements.



Makes me wish I had a Puerto Rican grand father or uncle with decades of rotary experience. That way I wouldnt need to **** up as much to learn.

mazdaspeed7 12-16-2005 10:25 PM


Originally Posted by RONIN FC' post='787235' date='Dec 16 2005, 11:53 AM

This is where i disagree...



Dry kits are made for people wanting to run a big shot and have engines with manifolds that are designed only to flow air "dry manifold". Meaning the injectors are at or near the engine and no fuel actually goes through the manifold. (unlike a carbed manifold) You need to add your own fuel with a dry n20 kit. Like with an EMS or the MS whatever.



Dry manifolds have dead spots and places where n20/fuel can accumulate, cause issues, and even have a backfire through the manifold that can blow it appart. Running a TB nozzle with a high shot is not very safe on most modern cars





Yes, dry manifolds have spots where nitrous cam accumulate causing it to backfire through the engine. But a good wet kit will still flow perfectly fine through a "dry" manifold provided the shot size isnt too high(and I dont consider 125 on a n/a too high) and you adhere to a minimum rpm limit when spraying. I bet you could make a 50 shot backfire through the intake if you tried to spray at 1k rpm. The risk of backfiring through the intake is much lower than the risk of leaning out with a dry kit on a rotary with a thought-out nitrous system, and a reasonable shot.



I still would not recommend a dry nitrous kit on a rotary, because there isnt a lot of working room with the stock fuel system, and I simply dont see the pros of a dry system coming even close to outweighing the cons.



Worst case scenerio? Whats cheaper to replace, an intake manifold or an engine?

j9fd3s 12-17-2005 11:08 PM


Originally Posted by mazdaspeed7' post='787472' date='Dec 16 2005, 08:25 PM

Worst case scenerio? Whats cheaper to replace, an intake manifold or an engine?



i know its a different car, but on the rx8 the intake is more than the engine, or the intakes are more than the engine.

teknics 12-18-2005 09:33 AM


Originally Posted by j9fd3s' post='787663' date='Dec 18 2005, 12:08 AM



i know its a different car, but on the rx8 the intake is more than the engine, or the intakes are more than the engine.



owned.



kevin.

RONIN FC 12-18-2005 10:39 AM


Originally Posted by mazdaspeed7' post='787472 (Post 695217)
I still would not recommend a dry nitrous kit on a rotary, because there isnt a lot of working room with the stock fuel system, and I simply dont see the pros of a dry system coming even close to outweighing the cons.

Stock system bieng key words. Hes gonna be running the MS. If he got it dyno tuned with a dry kit it would be a good system with actual fuel injectors doing the fueling instead of a series of holes drilled in a pipe like i and many others foolishly depend on.



And if you think about it, What engine can really sustain running lean with N20 that would make it OK to run a dry kit? None. You need to compensate however you see fit.




Originally Posted by mazdaspeed7' post='787472' date='Dec 16 2005, 11:25 PM
Worst case scenerio? Whats cheaper to replace, an intake manifold or an engine?

Problem is a blast like that doesnt only kill the manifold. It usually takes your engine and hood with it. Ive seen a exhaust backfire turn a flowmaster into a pillow looking ball of steel.


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