Aftermarket intake for single turbo.

Rx7>Rx8 · 08-14-2009, 06:48 PM

Does anyone with a single turbo RX7 run an aftermarket intake either custom built or is stock good enough? I was also going to try "Nitrous cooling" and the kit sprays in front of the intercooler but i think i can modify it to spray in front of the intake for colder air. Has anyone tried this?

RotaryProphet · 08-15-2009, 09:46 AM

I had very -very- good luck with a Weber downdraft style intake with a pair of EFI IDA style 52-48mm tapered throttle bodies.

Tweakit.net sells the throttle bodies and the plenum to go over top of them, but it'll be coming from Australia.

IR Performance · 08-19-2009, 11:03 AM

I have seen some people modify an M2 or other box-style intake to work with a single turbo. This will really depend on the turbo kit as the turbo will have to be placed far back to make room for the box.

Signal 2 · 08-19-2009, 12:37 PM

A friend made his own CAI on his single...sourcing air from the nose. Given that his car is tracked regularly and it wasn't built for looks, it's really pretty clean. Unfortunately I can't seem to find any pictures and he's out of the country for another week or so. If your interested I'll try to get him to post pictures or send me some when he gets back.

Also, check your PMs.

Rx7>Rx8 · 08-19-2009, 06:22 PM

Have you ever dabbled in nitrous cooling Signal 2? apparently it leaves the bottle at -147F.

Signal 2 · 08-19-2009, 07:28 PM

Quote:

Originally Posted by Rx7>Rx8

Have you ever dabbled in nitrous cooling Signal 2? apparently it leaves the bottle at -147F.

No, sorry. Old and boring. Still running the stock twins with just bolt-ons and a PFC.
I'm not a guru, but FWIW I would never tune to an artificially cooled intake like that. There would be no room for error if it malfunctioned.

Rx7>Rx8 · 08-20-2009, 04:40 PM

Nonono i wouldn't tune running that all the time. I would just let the IAT sensor handle it. If it would that is my experiance with sensors is very limited.

dudemaaan · 08-21-2009, 12:57 PM

I'm running a CAI on my T70. I don't have pop up headlights anymore, not sure if that matters or not, but I ran a 4" duct from the turbo to under the headlight, where the second oil cooler is on the R1/2 models. I have a preturbo water injection kit mounted in it also.

IR Performance · 08-22-2009, 09:11 AM

Interesting setup but that stock ast has to go.

dudemaaan · 08-22-2009, 01:08 PM

Yeah one of these days. It was replaced before i got the car, and my car runs alot cooler so it should hold up better.

Rx7>Rx8 · 08-26-2009, 09:20 PM

I'm running the crooked willow dual oil coolers so your setup won't work. The main question im asking now is would the IAT sensor make running a nitrous cooled intake feasible? I wouldn't always be running the nitrous, it's just a small, safe power adder.

dudemaaan · 08-26-2009, 11:02 PM

Just to be clear.... you're not talking about any nitrous going into the engine correct? You're specifically using it to cool the intake charge by blasting the intercooler or some other part of the intake system?

Assuming this is what you're plan is then yes the IAT will adjust according to the air temperatures. BUT, the stock sensor is known to be very slow reacting. If you have an open element sensor such as the one being discussed in the 3rd gen section, link follows (http://rotarycarclub.com/rotary_foru...ead.php?t=8381) then it will work quite well with a setup like this. If you're running the stock sensor then your fuel maps will either be too lean, or overly rich once the sensor reacts to the air temperature change. If you don't have the fast reacting sensor then I can get one for you.

Now if you're talking about spraying the intake with nitrous, such as the air filter or something. The nitrous will go into the engine and if you don't add fuel you're engine will blow that instant. Spraying the air filter with nitrous would be the same as injecting it into the elbow or whatever. In which case you're better off injecting it into the elbow. Hope this helps. Let me know if you need a fast reacting IAT.

Rx7>Rx8 · 08-27-2009, 07:08 AM

Ya thats exactly what I was talking about and I saw that aftermarket IAT sensor. I want this car to last for a while before a rebuild and correct me if im wrong but Injecting nitrous is VERY hard on cars lol

dudemaaan · 08-27-2009, 01:03 PM

Well nitrous in itself isn't hard on cars, provided you tune properly for it. But It's more difficult to tune for. And it's one more variable that has to be accounted for. Nitrous use on any engine is very similar to modifying a rotary, they both have a bad wrap in the reliability department. This is mainly due to people not understanding what it takes to make the rotary, or a nitrous system work successfuly. With the right knowledge in both areas nitrous could be ran reliably on a rotary. For the most part though, a turbocharger can make all the power you'll ever need so nitrous just isn't necessary.

fitzrx7 · 08-31-2009, 05:44 PM

Signal 2 tipped me off on this thread.

This is my setup, don't know if this picture helps it's the best I could find. PM me if any additional photos would help

08-14-2009, 06:48 PM	#1
Rx7>Rx8 Rotary Fan in Training Join Date: Jun 2009 Location: Indianola, Ne Posts: 30 Rep Power: 0	Aftermarket intake for single turbo. Does anyone with a single turbo RX7 run an aftermarket intake either custom built or is stock good enough? I was also going to try "Nitrous cooling" and the kit sprays in front of the intercooler but i think i can modify it to spray in front of the intake for colder air. Has anyone tried this?

08-19-2009, 11:03 AM	#3
IR Performance Rotary Fanatic Join Date: Feb 2008 Location: Metuchen, NJ Posts: 249 Rep Power: 18	I have seen some people modify an M2 or other box-style intake to work with a single turbo. This will really depend on the turbo kit as the turbo will have to be placed far back to make room for the box. __________________ Providing rotary engine rebuilds, porting, turbo installs, parts installations, full maintenance, etc. We work on all cars. www.irperformance.com www.myspace.com/rotaryexperimentseven irperformance@live.com 732-662-1794

08-19-2009, 12:37 PM	#4
Signal 2 Viable Fossil Join Date: Mar 2008 Location: Mid-West Posts: 199 Rep Power: 18	A friend made his own CAI on his single...sourcing air from the nose. Given that his car is tracked regularly and it wasn't built for looks, it's really pretty clean. Unfortunately I can't seem to find any pictures and he's out of the country for another week or so. If your interested I'll try to get him to post pictures or send me some when he gets back. Also, check your PMs. __________________ Jim VR R1 FD Last edited by Signal 2; 08-19-2009 at 12:43 PM.

08-21-2009, 12:57 PM	#8
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	I'm running a CAI on my T70. I don't have pop up headlights anymore, not sure if that matters or not, but I ran a 4" duct from the turbo to under the headlight, where the second oil cooler is on the R1/2 models. I have a preturbo water injection kit mounted in it also. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

08-22-2009, 09:11 AM	#9
IR Performance Rotary Fanatic Join Date: Feb 2008 Location: Metuchen, NJ Posts: 249 Rep Power: 18	Interesting setup but that stock ast has to go. __________________ Providing rotary engine rebuilds, porting, turbo installs, parts installations, full maintenance, etc. We work on all cars. www.irperformance.com www.myspace.com/rotaryexperimentseven irperformance@live.com 732-662-1794

08-15-2009, 09:46 AM	#2
RotaryProphet Rotary Fanatic Join Date: Sep 2008 Posts: 147 Rep Power: 17	I had very -very- good luck with a Weber downdraft style intake with a pair of EFI IDA style 52-48mm tapered throttle bodies. Tweakit.net sells the throttle bodies and the plenum to go over top of them, but it'll be coming from Australia.

08-19-2009, 06:22 PM	#5
Rx7>Rx8 Rotary Fan in Training Join Date: Jun 2009 Location: Indianola, Ne Posts: 30 Rep Power: 0	Have you ever dabbled in nitrous cooling Signal 2? apparently it leaves the bottle at -147F.

08-20-2009, 04:40 PM	#7
Rx7>Rx8 Rotary Fan in Training Join Date: Jun 2009 Location: Indianola, Ne Posts: 30 Rep Power: 0	Nonono i wouldn't tune running that all the time. I would just let the IAT sensor handle it. If it would that is my experiance with sensors is very limited.

08-22-2009, 01:08 PM	#10
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	Yeah one of these days. It was replaced before i got the car, and my car runs alot cooler so it should hold up better. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

08-26-2009, 09:20 PM	#11
Rx7>Rx8 Rotary Fan in Training Join Date: Jun 2009 Location: Indianola, Ne Posts: 30 Rep Power: 0	I'm running the crooked willow dual oil coolers so your setup won't work. The main question im asking now is would the IAT sensor make running a nitrous cooled intake feasible? I wouldn't always be running the nitrous, it's just a small, safe power adder.

08-26-2009, 11:02 PM	#12
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	Just to be clear.... you're not talking about any nitrous going into the engine correct? You're specifically using it to cool the intake charge by blasting the intercooler or some other part of the intake system? Assuming this is what you're plan is then yes the IAT will adjust according to the air temperatures. BUT, the stock sensor is known to be very slow reacting. If you have an open element sensor such as the one being discussed in the 3rd gen section, link follows (http://rotarycarclub.com/rotary_foru...ead.php?t=8381) then it will work quite well with a setup like this. If you're running the stock sensor then your fuel maps will either be too lean, or overly rich once the sensor reacts to the air temperature change. If you don't have the fast reacting sensor then I can get one for you. Now if you're talking about spraying the intake with nitrous, such as the air filter or something. The nitrous will go into the engine and if you don't add fuel you're engine will blow that instant. Spraying the air filter with nitrous would be the same as injecting it into the elbow or whatever. In which case you're better off injecting it into the elbow. Hope this helps. Let me know if you need a fast reacting IAT. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

08-27-2009, 07:08 AM	#13
Rx7>Rx8 Rotary Fan in Training Join Date: Jun 2009 Location: Indianola, Ne Posts: 30 Rep Power: 0	Ya thats exactly what I was talking about and I saw that aftermarket IAT sensor. I want this car to last for a while before a rebuild and correct me if im wrong but Injecting nitrous is VERY hard on cars lol

08-27-2009, 01:03 PM	#14
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	Well nitrous in itself isn't hard on cars, provided you tune properly for it. But It's more difficult to tune for. And it's one more variable that has to be accounted for. Nitrous use on any engine is very similar to modifying a rotary, they both have a bad wrap in the reliability department. This is mainly due to people not understanding what it takes to make the rotary, or a nitrous system work successfuly. With the right knowledge in both areas nitrous could be ran reliably on a rotary. For the most part though, a turbocharger can make all the power you'll ever need so nitrous just isn't necessary. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

08-31-2009, 05:44 PM	#15
fitzrx7 The Newbie Join Date: Mar 2009 Location: Running lean Posts: 5 Rep Power: 0	Signal 2 tipped me off on this thread. This is my setup, don't know if this picture helps it's the best I could find. PM me if any additional photos would help __________________ Fitz '93 TGM base, streetported, T4/GT40 w/ a few other little mods...