My RX7SP build up

[RICE RACING]

Originally Posted by knonfs

INDEED!

Peter - Are you still running 100% water? My car is finally getting tuned sometime this month, and Dave at KDR recommended a 50/50 mix (I have your kit)

Hey there,

No I use and recommend only WM50 (by weight!), I have been using this for a LONG time now and documented all of the testing here > http://www.aquamist.co.uk/vbulletin/...?t=1590&page=8
^(there is a ton of info, and the performance is ALWAYS increasing *to give you an idea post #74 or so lists power as 278rwkw and now I have much more*, but you will get the idea, its worth the read)
I tried all kinds of permutations even different fluids, trying to replicate what I have in old testing papers on the subject, in the end I got a pretty good correlation and I personally found that 50/50 water to methanol *by weight* cools the best, and makes the most power by a long long way.

I have upgraded my WI systems just recently to fully exploit this system change, you can still run it on pure water if you wish, you just wont make the same power or have the same detonation resistance as the latest specification systems (all that is different is the nozzle calibration, all the system parts are the same).

Peter

[knonfs]

Originally Posted by RICE RACING

Hey there,

No I use and recommend only WM50 (by weight!), I have been using this for a LONG time now and documented all of the testing here > http://www.aquamist.co.uk/vbulletin/...?t=1590&page=8
^(there is a ton of info, and the performance is ALWAYS increasing *to give you an idea post #74 or so lists power as 278rwkw and now I have 379rwkw!!!*, but you will get the idea, its worth the read)
I tried all kinds of permutations even different fluids, trying to replicate what I have in old testing papers on the subject, in the end I got a pretty good correlation and I personally found that 50/50 water to methanol *by weight* cools the best, and makes the most power by a long long way.

I have upgraded my WI systems just recently to fully exploit this system change, you can still run it on pure water if you wish, you just wont make the same power or have the same detonation resistance as the latest specification systems (all that is different is the nozzle calibration, all the system parts are the same).

Peter

Love to hear that, seems like Dave is on the right track! The nozzle calibration that you speak of, is that by adjusting the plastic turn knob on the side of the nozzle?

[RICE RACING]

Originally Posted by knonfs

Love to hear that, seems like Dave is on the right track! The nozzle calibration that you speak of, is that by adjusting the plastic turn knob on the side of the nozzle?

Yes, best to E-Mail me as I don't really freely share specs (only with customers like you) peter@riceracing.com.au

The RRWEP110 set up you have can get you pretty high up, for more you would have to send the atomizer back to me and I can modify it to the new specifications *its only if you want to run ~36psi boost* < and the power that goes with it

[RICE RACING]

O.K. Remember pump petrol here !

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 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 !@

[1FaastFd3s]

Great read and what a last update! Do you have any videos of the current setup? Cant wait to see what 30+psi on this setup will do. You are currently running 50/50 water/meth, no longer just water correct?
David

Originally Posted by RICE RACING

O.K. Remember pump petrol here !

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 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]

Originally Posted by 1FaastFd3s

Great read and what a last update! Do you have any videos of the current setup? Cant wait to see what 30+psi on this setup will do. You are currently running 50/50 water/meth, no longer just water correct?
David

Hey David,

On holidays now, so start of next year will get back into testing and updates

I'll fit up my new tires and the camera and take some video of how she goes, currently its on 26.3psi or 1.8bar gauge boost pressure.

I have run WM50 for the last 2 years, logical progression from water really. I did allot of my own tests on a host of fluid mixtures, verifying old test reports and found in my own case that WM50 (50:50 by mass, not volume) works the best for me. I don't disclose the WI rate exactly (something I keep for my customers) but its "high", and it needs to be to run this level of boost pressure and certified performance on the VBOX

Last year I did tests on 30+psi but was not overly happy with some parameters for long term use, last month I finally got around to re-engineering some system set up parts and now its much better as a long term proposition. All on the same 13B-REW I have been running for 3 years and its not ever been touched! (testament to reliability of water injection). This set up will easily do 2.5bar gauge boost pressure or ~36psi on normal BP Ultimate Petrol. What cant be conveyed over the internet is the speed of the way it is now on ~26psi! it flat out hauls!