My RX7SP build up

[RICE RACING]

Here is an update of the durability (measured by compression) of a stock 13B-REW (from brand new) when run at sustained high power. Taken form my postings on Aquamist Water Injection site.

Originally Posted by RICE RACING

Thanks Richard :smile:

I really have my heart set on it sitting on a steady 1.2 bar or 17.5psi inlet manifold pressure and when the weather cools down here maybe try 1.4bar ~20psi, I will update the VBOX3i testing figures once I get my hands on the methanol and mix up a batch. All levels I have run before in my old cars and in customers ones........

Tested the compression of the engine after 1800km and its good for a rotary at around ~122psi @ 250rpm (front and rear rotor same) cranking speed. Will keep an eye over this long term.



I changed the porting specification to give the engine much more mid range power and not concentrate on top end power so much, it is quite fast on road despite relative low levels of peak power. I am projecting it will have a honest 480bhp to 500bhp (at the higher 1.4 boost setting) but will see what happens when I get around to testing this.

So a full year on and covered another 6000km (to date: all up 8200km) of testing/racing/top speed trials.
Summary: Every drive has been quite high load 90-140 testing probably around 400 or so of these tests, many 100-200kmh & 60-130mph runs (3rd to top of 4th gear) and a few top speed runs (on special test track ). Last 3000km at ~500bhp level @ 1.53kg/cm Boost level.

I did one intermediate compression test between the 1800km and this one today, but only wrote those figures down rather than taking a photo/proof. They were close to the ones today.

Rear Rotor


Front Rotor


This test was fully dry (engine run till out of fuel) and EGI disconnected, First one cant remember but I think was not as "empty" of excess fluid, this makes a high difference to rotary engine compression readings FYI.

Anyway she is not too bad, I did not think it would hold up this good especially given its a mobile test bed each and every single time it gets driven.

I have it at its new boost level of 1.7bar (around 1.75kg/cm) and it is a rocket see if she can make another year of punishment

[RICE RACING]

Here is pics of the RR COP CD system mounted up (CD boxes next to battery on custom holder), wiring harness and COP's installed.

Few Grasshoppers & bugs from extensive real world testing on the front bumper! they stand no chance at "moderate" speeds













Covered 1600km in last 2 weeks big boost bro! CD makes a massive difference over the HKS DLI and stock coils/leads combo.

[RICE RACING]

Well its official CD ignition totally rapes inductive.

I set a new record for the 90-140kmh test of 2.48 seconds, going on a small incline as well this test was non ideal in the fact that the car is still learning the new boost setting so it was lacking some mid range boost which is critical for this test.

Of much more importance though is the fact that on the CD ignition I can run the engine properly the way I want and not the way the ign system wants or allows me to do. This is very important for control of charge temperature and EGT also.

I can't divulge the exact figures (as too many copy cats!) I'll let them try to make a living off my old discarded info while I will continue to test and show first hand long term how fucking good water injection is for rotaries and REAL STREET CARS! (still on petrol, and full quiet catalyst exhaust system!)

[RICE RACING]

Originally Posted by RICE RACING

I'll post up some other incremental times of the F40, I have 3 separate tests (one factory) two independent (USA and UERO models) and on peak power band test 60mph to 90mph and 70mph to 90mph I have ........

(Peak power band for all cars)

60mph-90mph
EURO F40 = 2.70 seconds
USA F40 = 2.90 seconds
RICESP = 2.59 seconds

70mph-90mph
EURO F40 = 1.90 seconds
USA F40 = 2.10 seconds
RICESP = 1.76 seconds

New Figures for the last test compared to the Ferrari F40.

60mph-90mph
RICESP = 2.42 seconds

70mph-90mph
RICESP = 1.64 seconds

I still have some fine tuning to do and a couple more little tricks up my sleeve then will organize another test to do a new 100kmh to 200kmh figure

[diabolical1]

Originally Posted by RICE RACING

Of much more importance though is the fact that on the CD ignition I can run the engine properly the way I want and not the way the ign system wants or allows me to do. This is very important for control of charge temperature and EGT also.

if you don't mind, can you expand on this a bit, Rice?

[RICE RACING]

Originally Posted by diabolical1

if you don't mind, can you expand on this a bit, Rice?

It's a hard concept to relay over the internet, but I will try.

The inductive based ignition (even with HKS booster) is very limited in ability to fire and initiate spark, so much so that you end up compromising things like water rate you can use, plug gaps, heat range, ignition timing, and other parameters.... there are as a result losses of performance and non audible misfires which otherwise show up as a power loss when you test in the real world with the best equipment like the Race Logic VBOX3i (as I exclusively use).

The CD based ignition and in particular when equipped to its maximum with coil on plug system (even less losses of ign energy) just free you up to not work under the same constraints as a limited ignition systems imparts on you.

The performance I have out of RICESP now is just astounding! its a BIG JUMP over what I have listed here it's not something I am willing to share openly on forums however as always I do give about 1 million times more information for free and more openly than anyone else ever has or ever will. None of this is rocket science I need to reiterate its just repeating basic tuning knowledge as used by BMW to win the F1 world title using turbo's and also Porsche who used CD ignition on the 917/30 (nothing car that never did anything lol). For my own car I was VERY HAPPY with the way it was, but I am glad I went back to the full CD and COP set up, as I said it just another world in terms of performance levels that can be easily exploited through water injection and normal old pump petrol/gasoline

[RICE RACING]

To give this comparison test some context:
RICESP (stock std 13B-REW engine, full catalyst exhaust, T04 type turbo, plumb back waste gate, small standard inter cooler 1310kg)
*fully compliant genuine road car*

ND4SPD (Cosmo 13B, full bridge port, T51 type turbo charger, large front mounted inter cooler, gutted exhaust, open waste gate pipe 1250kg)
*quasi race car!*

I did some very interesting comparisons to ND4SPD (Mazda Capella I tuned with RRWEP110 WI) V's RICESP via the immense analysis power of the VBOX

I'll list up some comparison results: About the total FALLACY of " typical dyno sheets"! v's real world power and times taken for vehicles to actually do "work" with known levels of weight/mass!!!

This car makes on a dynohomodynamics ~390rwkw on 19psi boost (full bridge port & T51 turbo 1250kg as run at race track) where we got these recordings. You will see RICESP at 1310kg run weight is just as powerful (real rwkw! power as measured by me via VBOX!) and its just as fast in peak power band too (what really matters at the end of the day rather than poofter dyno sheet comparisons)

This report is of ND4SPD in its peak power band (6000rpm to 8200rpm) = 110kph to 150kph in 3rd gear on 19psi boost (VBOX measure = ~310rwkw owner has sheets of 380 to 390rwkw on homo dynamics guess machine)
ND4SPD = 110kmh to 150kmh = 2.07 seconds


This report shows RICESP and the first one is a FC RX7 fitted with a bridge port 13B running 15psi boost and a GT35 turbo lol (you can see I am twice as fast as it lol 4.43 seconds V's 2.06 seconds!) This car apparently makes 270rwkw dynohomodynaimcs @ 16psi boost LOL! You can see these dyno figures are not worth pissing on in the REAL WORLD! and are vastly overstated from what the cars actually makes when you apply real physics to them!!!


And the other result table is at full boost when I tuned it (ND4SPD) on road just before setting national dyno record http://www.riceracing.com.au/water-injection.htm < *read customer testimonial* (which to this day still stands!) for the only ever 13B rotary to lay down 3 back to back power runs of this level and still be able to drive home on pump petrol
Boost, EGT, RPM, AFR sensors fitted in this tuning session.
RICESP = 110kmh to 150kmh = 2.06 seconds


My RX7 is pretty quick I think you will all agree and this is still not sharing the current state of high power tune *I'll save that for another day*