RICESP Water Injected RX7

[RICE RACING]

This web site is the resource on the topic that makes engines the most reliable and the most powerful they can be.

It's where the best water injection manufacturer resides (my friend Richard L) and it is where you (and others) have open information on cars and theology that works. There are many many capable people (not including myself there!) and a literal plethora of good/excellent information to follow across a variety of platforms.

My process of learning would have been accelerated many times if this place was available back many years ago when I started on this "science" of water injection. Still you are right that there are MANY capable people in the world who do not use the internet or don't post on forums or in some cases don't care to share information. That is life, but all of the information you need is already out there anyway, it just needs to be put into a modern context and some adjustments made for today's higher speed engines and addressing some basics like *ignition strength*, once you are on the way you will be surprised how quickly you will gain the experience.

[RICE RACING]

I thought I better put up some new ECU log's to back up what I have been saying
Went out for a run this morning to capture some data for a friend of mine I am helping to inspire in America *hello*

The following are screen shots of the captured ECU information showing the start of the logging (test conditions at start prior to engine firing up) *test day was 19deg C at 10am. Shows MAP sensor calibrated to BAP sensor in ECU.

Second file is the highlighted 90-140kmh test in 3rd gear, showing peak boost in mid range revs (around 33.2psi on Blitz unit and around 32psi on Engine MAP sensor)

Third is the 140kph time increment, this showing the end boost (still over 30psi) Blitz shows 32psi or so, important is the sub 40deg C intake charge temperature, and low Exhaust gas temperature....... the time to do the speed increment speaks for it's self!!! THE THING IS LIKE A F7CKING SPACE SHUTTLE !!! it literally LAUNCHES down the road

[RICE RACING]

Here is pics as promised

Parameters at start of test (before starting engine) 18deg C day


Mid range mega boost, 33.2psi!


1.742 seconds 90kmh to 140kmh! excellent charge temps, mega boost

[RICE RACING]

Forgot to add, did 100kmh to 169kmh in ~3.71 seconds on the ECU log (0.4 seconds faster to that point than when I did my 6.25 second 100kmh to 200kmh run on lower boost), ran out of test track to do 200kmh test, and only did easy shifting 3rd to 4th, with flat shift (on the race logic traction control) and run it out to 200kmh it will do this in the high 5 second range easy. This car is QUICK!

Log

[stevieturbo]

images arent working ?

[RICE RACING]

Image Shack eats balls! hope this works now.

Conditions at start of test, 18 deg C Ambient


Mid range boost 33.2 psi Blitz boost SBC I-Color


90kmh to 140kmh 3rd gear test std power band test, very quick.


100kmh to 169kmh = 3.71 seconds short test

[RICE RACING]

Originally Posted by stevieturbo

Keonigsegg and Veyron really are animals !!

*page 13 supercar performance list post*

The only car faster than mine from 100kmh to 200kmh is the Veyron now

4.8 seconds is hard to match let alone beat, but I only have a 2.6lt motor not 8lt nor 3 extra turbo's hahahaha

[RICE RACING]

THREAD I POSTED UP HERE (LINK) > http://www.rotarycarclub.com/rotary_...ad.php?t=14704
(PASTED BELOW)






Acceleration tests of FD rotary RX7's (VBOX data only accepted) verified by RICE RACING.
Only will accept flat road runs, any downward slopes greater then ~1.5 degree's over the length of the test will be rejected
Ranked FASTEST to SLOWEST
A little background information on acceleration times in gear/s: To do half the time of a stock weight FD you need basically double the power (simple), if you can do it in 1/3rd of the time you need 3 times the power (simple again) and so on it goes..... In your VBOX log the distance taken to achieve the speed is also exactly half if you had half the time taken, thus double the power (see proven example at end of post) eg: double the power also equals double the acceleration (Longitudinal G force average) *IT ALL ADDS UP IN REALITY! real world testing!!!*. These test really do separate the bullshit (dyno sheets) from the reality of practical acceleration tests.SEE EXAMPLE TEST @ BOTTOM OF THIS POST

OFFICIAL LIST
100kmh to 200kmh (Any gear or gears you like!)
User name - Time (seconds) - basic spec
smg944 - 5.12 sec - C16 water injected 27psi 525rwhp http://www.rotarycarclub.com/rotary_...ad.php?t=14704
Ferrari ENZO - 5.80 sec - Blueprinted rebuilt motor (est 687bhp, 1505kg run weight) > http://www.ferrarichat.com/forum/sho...#post141406422
"A new engine is $250K USD and a re-built one from the factory is about $150K. We did ours for under $100K."
Ferrari ENZO - 6.20 sec - Factory motor > http://www.ferrarichat.com/forum/sho...#post141406422
RICE RACING - 6.25 sec - 93 oct water injected 24psi run http://www.aquamist.co.uk/vbulletin/...?t=1590&page=3
smg944 - 6.39 sec - 93 oct water injected 23psi 473rwhp
Ferrari F40 - 6.74sec sec - The super car reference, 1421kg run weight ~500bhp catless http://www.carobu.com/F40%20LM%20510hp%20dyno.html
Docmar - 6.90 sec - 93 oct 22psi 2 people in car http://www.rotarycarclub.com/rotary_...t=14704&page=3
Nathan - 10.82 sec - 93 oct 18.5psi RF420 twins
Kila13B - 15.52 sec - 93 oct 15psi 100% stock std RX7 Spirit R Type A



90mh to 140kmh (3rd gear only) power band acceleration test ~4500rpm to ~8000rpm < *rough rpm range* for typical FD's
User name - Time (seconds) - basic spec
RICE RACING - 1.91sec - 93 oct water injected 31psi run http://imageshack.us/f/806/191secvbox30psisicbro.jpg
smg944 - 2.18 sec - C16 water injected 27psi 525rwhp
RICE RACING - 2.26 sec - 93 oct water injected 24psi run
smg944 - 2.59 sec - 93 oct water injected 23psi 473rwhp
Nathan - 3.25 sec - 93 oct 18.5psi RF420 twins http://www.riceracing.com.au/vbox-ii...ing-tuning.htm
Kila13B - 5.70 sec - 93 oct 15psi 100% stock std RX7 Spirit R Type A http://www.riceracing.com.au/vbox-ii...ing-tuning.htm
Docmar -


OFFICIAL LIST of some real fast tuned & factory super cars & a few shit box porsches mixed in as well


EXAMPLE TEST OF PROOF OF POWER RELATIONSHIP TO TIMES TAKEN TO ACCELERATE
This is another interesting comparison: From my collection of VBOX tests http://www.riceracing.com.au/vbox-ii...ing-tuning.htm
90kmh to 135kmh (best power gearing for the stock RX7) see rpm logging.

RICESP V Spirit R Type A (stock standard)

Car specs:
Spirit R Type A
1335kg as run
280PS factory rated engine (100% stock std no mods at all)
Car ran 0-100kmh in 5.55 seconds & 13.85 second @ 104.78mph RR V-BOX Recorded for 1/4 mile *no roll out*
Time = 5.06 seconds & 158 meters

RICESP:
~21psi Rice Racing Engineered Water Injected Monster
1310kg as run
Power is over double a factory RX7 (see actual VBOX RR rwkw measure) so roughly double the power, double the acceleration & half the time required to do it and distance as well
Time = 2.21 seconds & 69 meters

VBOX File report


Another power analysis graph of RICESP using VBOX3i instrument
This is another interesting comparison: From my collection of VBOX tests http://www.riceracing.com.au/vbox-ii...ing-tuning.htm
Here is the 3 rd gear acceleration of the stock RX7 SP, tested by Motor Magazine with Correvit digital timing.

RX7SP stock 1995 test
204kw
276bhp claimed power factory rated engine (100% stock std no mods at all)

100kmh = 0 sec
110kmh = 0.87 sec
120kmh = 1.83 sec
130kmh = 2.84 sec
140kmh = 4.58 sec

RICESP
You guess the power

100kmh = 0 sec
110kmh = 0.51 sec
120kmh = 0.99 sec
130kmh = 1.51 sec
140kmh = 2.01 sec



VBOX proof of my figures at mid range boost on our list, HIGH BOOST VBOX runs to come stay tuned
O.K. Remember pump petrol/gasoline here only ! ***OFFICIAL VBOX test results***

90kmh-140kmh = 2.26 seconds!
100kmh-150kmh = 2.39 seoconds!
100kmh-200kmh = 6.25 seconds!





Still on old tires, and showing about 24psi boost on the VBOX, and ~330rwkw VBOX POWER

Tested at 1320kg run weight and 25 deg C ambient day, still doing boost learning procedure so there is a bit more in at this level and fuel mixture set rich to be on safe side.

Fact V's Fiction

Will put up some VBOX graphs when I get them off the lap dancer top

Here is the graph of the 2.26 second 90-140 test this car has a *massive* power band, not normally seen on genuine 13B road cars of this level of performance and speed!@ the word "response" does not do it justice! It builds one bar of boost at around 3400rpm in a transient test, and near its maximum boost setting well before 4600rpm and it does it even in the low gears which only take a second or two for 8000rpm, its fantastic..... best road car set up ever !@

[RICE RACING]

Did a new record 90kmh to 140kmh test today

1.91 seconds for 30.5psi boost pressure, exhaust manifold pressure is starting to rise too high and the turbo is over speeding a bit. This is about the limit of the set up I say, showing 354rwkw or about 580bhp figured back to the engine from experience.

[madbouncy]

Originally Posted by RICE RACING

Did a new record 90kmh to 140kmh test today

1.91 seconds for 30.5psi boost pressure, exhaust manifold pressure is starting to rise too high and the turbo is over speeding a bit. This is about the limit of the set up I say, showing 354rwkw or about 580bhp figured back to the engine from experience.

In the picture it looks like your manifold pressure is 30psi and the exhaust is almost 38 psi. That doesn't seem like it's getting that high compared to a lot of logs I see on other cars, mainly subarus. Exhaust pressure never really seems to get talked about a whole lot so I'm definitely interested if you have suggestions on what you look for. For my subaru the recommended ratio is around 1.5 to 2 and they don't consider it high until around 60psi. Obviously the RPM is turbo dependent so that I can understand getting too high and is easier to know when you're going too far.

Also, do you think a lot of the exhaust pressure has to do with overlap? Say an engine with almost no overlap could get away with more exhaust pressure than a car with moderate or extreme overlap? From a theory standpoint that would make sense to me but the theory only talks about a concept and doesn't give any insight on an actual optimal setup.

Lastly, is the boost engine that is at 30 psi the actual manifold pressure or is it before the intercooler and everything?

- Matt