Results of adding an IC to AI only cars
My temps at 23 psi boost pressure stay under 50c with a fast reacting open element sensor in the stock location. Temps under cruise conditions are 44c with a CAI on my turbo. This is in 95* F texas heat. It doesn't seem to matter how much boost i throw at it, the air temps stay reasonable, they still go higher then during cruise, but not near as high as without water. Preturbo will really shine once you get the boost high enough to generate enough heat for the water to flash. I would run more then 2 gph personally, probably more like 4. Course i wouldnt even bother with post turbo, i would just push it all preturbo.
My temps at 23 psi boost pressure stay under 50c with a fast reacting open element sensor in the stock location. Temps under cruise conditions are 44c with a CAI on my turbo. This is in 95* F texas heat. It doesn't seem to matter how much boost i throw at it, the air temps stay reasonable, they still go higher then during cruise, but not near as high as without water. Preturbo will really shine once you get the boost high enough to generate enough heat for the water to flash. I would run more then 2 gph personally, probably more like 4. Course i wouldnt even bother with post turbo, i would just push it all preturbo.
yup. put the bigger injector before the turbo.
i was cruising and had 112f intake temps, i started to boost and the temps would stay the same and start to climb alittle. the temps would only drop when i decel'ed
im doing 630cc post and 126cc pre. i wonder could 630 be too much post? my mixture is mostly water. maybe 70% water. running haltech GM intake sensor in stock location. not sure how everyone can get temps to drop with a little water and i cant get anything!
does the placement of filter really effect cooling capability of w.i. system?
im doing 630cc post and 126cc pre. i wonder could 630 be too much post? my mixture is mostly water. maybe 70% water. running haltech GM intake sensor in stock location. not sure how everyone can get temps to drop with a little water and i cant get anything!
does the placement of filter really effect cooling capability of w.i. system?
I doubt its the sensor. I think it would either work or not work, but you could always pull it and test it in water of known temperatures. Use room temp water, and hot water. I'm guessing you're using a haltech or something?
You might also test your water system to verify its flowing what you think.
Are you saying the temps are staying the same as they were before the water injection or just before the preturbo?
You might also test your water system to verify its flowing what you think.
Are you saying the temps are staying the same as they were before the water injection or just before the preturbo?
The same as before adding preturbo or before adding the whole kit?
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Also how much boost are you running and what size turbos/intercooler setup? Your temps don't sound like they are extremely high or anything. It's possible your temps are not really high enough for the water to pull much heat. Water cools the most when it flashes. It flashes at 212* F at 0 psi. This number increases as it's under more pressure. Since the majority of the water injected is after the intercooler, that water will not flash until it reaches the combustion chamber. Most of your cooling is being done by the intercooler, after that the water won't do much since the air is already cooled down quite a bit.
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Also how much boost are you running and what size turbos/intercooler setup? Your temps don't sound like they are extremely high or anything. It's possible your temps are not really high enough for the water to pull much heat. Water cools the most when it flashes. It flashes at 212* F at 0 psi. This number increases as it's under more pressure. Since the majority of the water injected is after the intercooler, that water will not flash until it reaches the combustion chamber. Most of your cooling is being done by the intercooler, after that the water won't do much since the air is already cooled down quite a bit.
ya i had the same problem even when i ran dual m10s (630cc+630cc= 1260cc)
i took a few logs one time with the kit off and seemed to read the same way. did a back n forth.
people claim of like instant drops in temps and im not seeing it.
i took a few logs one time with the kit off and seemed to read the same way. did a back n forth.
people claim of like instant drops in temps and im not seeing it.
I did some testing lastnight with the preturbo water only injection. Cruising temps were 33c (91*F) A good pull in 4th gear caused temps to increase to 42*c (107.6F) this was at 15 psi (low boost) I then let the temps settle back to 33C and did a pull on high boost (23 psi) temps went back to 42c. So it seems that even though the water isn't lowering the temps it's keeping them at a constant temperature regardless of how much boost I run. I would do a pull from 1st to 4th to further test, but my drag radials are too narrow and just spin all over the place. (even in 4th they spin w/ 23 psi)
I use the fast reacting sensor with the pfc as mentioned in other threads so temperatures are accurate.
I use the fast reacting sensor with the pfc as mentioned in other threads so temperatures are accurate.
600cc preturbo that is WAY too much. I generally run an M1 injector pre-turbo. I have killed 4 T4 turbos figuring that out.
Anyhow I finished two more Rx-7s in the past two days...
First FD is on stock twins at 11.6 PSI. For the last year + it has been running water only 1 M1 injector pre-turbo with an ambient air intake and a blitz stock mount with OEM duct work.
Car would generally run in the 60s/70s for intake temps here in the summer time at the track.
I recently added a 500CC injector post-compressor and switched to 50/50 mix. After the car has been running for about a 30 hour and a little boosting the intake temps are 40-44C. If I give it 7~ish psi the temps will drop about 2C after a complete 3rd gear run. If I run 1st/2nd/3RD at 11.6psi intake temps will remain the same. If the car heatsoaks about 56C then the temps will raise 2C. To get he car to heatsoak to those temps it has to be run for and shutoff and completely heat soaked. It has the stock hood too. I have modified the stock AIT and its in stock location, same for the following car.
Next car runs an apexi Rx6 turbo. Very similiar in size to stylemon's 57 trim. This car has an XS stock mount intercooler, no ducting, vented hood, turbo blanket, lim heatshield. Intake is still in the engine bay, sees small amounts of outside air( shielded). Its very close to the above car. However it runs the nicest aquamist jets( right side of the picture). The other cars are running coolingmists stuff.Temps will remain the same if under 55C, if about they will raise. This car on average runs 10C hotter than above car; I believe its the duct work to the IC. We are planning on adding a fmic after sevenstock.
Real key here is having a FMIC in addition to the water/methanol, regardless of mixtures or pre/post turbo...
Anyhow I finished two more Rx-7s in the past two days...
First FD is on stock twins at 11.6 PSI. For the last year + it has been running water only 1 M1 injector pre-turbo with an ambient air intake and a blitz stock mount with OEM duct work.
Car would generally run in the 60s/70s for intake temps here in the summer time at the track.
I recently added a 500CC injector post-compressor and switched to 50/50 mix. After the car has been running for about a 30 hour and a little boosting the intake temps are 40-44C. If I give it 7~ish psi the temps will drop about 2C after a complete 3rd gear run. If I run 1st/2nd/3RD at 11.6psi intake temps will remain the same. If the car heatsoaks about 56C then the temps will raise 2C. To get he car to heatsoak to those temps it has to be run for and shutoff and completely heat soaked. It has the stock hood too. I have modified the stock AIT and its in stock location, same for the following car.
Next car runs an apexi Rx6 turbo. Very similiar in size to stylemon's 57 trim. This car has an XS stock mount intercooler, no ducting, vented hood, turbo blanket, lim heatshield. Intake is still in the engine bay, sees small amounts of outside air( shielded). Its very close to the above car. However it runs the nicest aquamist jets( right side of the picture). The other cars are running coolingmists stuff.Temps will remain the same if under 55C, if about they will raise. This car on average runs 10C hotter than above car; I believe its the duct work to the IC. We are planning on adding a fmic after sevenstock.
Real key here is having a FMIC in addition to the water/methanol, regardless of mixtures or pre/post turbo...
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 237
From: Twin Cities, MN
I don't know what to tell you.
I will mention that now Stylemon's car is up to 20psi doing a complete 4th gear pull will yeild a 2C increase in intake temps at the end of the run. However if its just a 3rd gear pull temps will drop down to the 25C range...
I will mention that now Stylemon's car is up to 20psi doing a complete 4th gear pull will yeild a 2C increase in intake temps at the end of the run. However if its just a 3rd gear pull temps will drop down to the 25C range...
Thread Starter
Joined: Dec 2001
Posts: 7,174
Likes: 237
From: Twin Cities, MN
That is your problem...
Windshield washer fluid contains a VERY low amount of alcohol. Go get some methanol...
I did some more testing on stylemon's car today. I changed the 500cc nozzel location from post intercooler to pre-turbo and the temps went up 7C. Switched back and they came right back down.. Interesting...
Windshield washer fluid contains a VERY low amount of alcohol. Go get some methanol...
I did some more testing on stylemon's car today. I changed the 500cc nozzel location from post intercooler to pre-turbo and the temps went up 7C. Switched back and they came right back down.. Interesting...