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Originally Posted by Richard L
I am looking forward to the comparison.
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I have some preliminary results: (This is what I e-mailed a customer of mine who is thinking of trying it himself)
Giving you an update on my W/M 50/50 test.
I mixed up a batch yesterday (will take pics of what I did if it helps you) I went out today for a 200km drive. On the first few km I gave it a few squirts to make sure the remaining water was used out of the line. About 10km down road pulled out of a junction and selected 2nd gear and it was drifting up road just about to activate the traction control and the engine note was totally different to ever before (much nicer and louder) *good start*
I built up my confidence along the way and started opening her up and the feeling I had in second was observed in 3rd and 4th, on my journey I was overtaking cars and 4wd?s towing caravans with crazy speed just leaving it in 4th (going to 160kph stupidly well). On my return leg after almost 2 hours running of the engine nonstop I overtook one car and revved it out in 3rd gear to 7100rpm on dead flat road I normally use, thing felt better than ever before (today is 25deg C). In this weather and on 1.20kg/cm boost at those revs it showed 254rwkw on my Blitz power measure, the previous highest was 232rwkw on 1.0kg/cm on about a 10 deg C day and engine was very cold (when I went to do my 90-140 test).
The impression of the 50/50 mix is that it does work far better in my engine set up when the water jet is set to 3 turns out (as today) on pure water I was having the jet out at about 2.5 turns and for like conditions the car now feels to me at least 10% more in power if not maybe a bit more? Can?t tell for sure till I hook up VBOX, it?s still got well over ? tank of fuel in it so when it works its way down to ? as per my other tests I will go out early in the morning and do another 90-140 test and get some more comparable figures.
I doubt I will ever go back to straight water again.
Specs:
3 turns out (water injector) = ~500cc/min on my system at this boost
AFR 10.9:1 at full throttle (was before 11.2 to 11.3)
About 13 deg ign timing 8 deg split
50/50 by weight methanol to water.
254rwkw on Blitz (from my experience engine is making around 450bhp region)
Peter
**foot note**
This power measure is off my on board boost controller which has a power meter also it reads a bit lower than what I obtain from the VBOX. The peak power as recorded on the Blitz data logging was at 6900rpm and the engine def does not fall off power nearly as bad as before, it does feel allot stronger especially given the car was heavier and also in about 15 deg C hotter test condition (not to mention motor had been running for 2 hours straight).