Re: Injecting prior to turbo comp' impellers
 

Ok I'll take a look without the pre-turbo jet then with.

Re: Injecting prior to turbo comp' impellers
 

Is the weather still cold in New Jersey?

Re: Injecting prior to turbo comp' impellers
 

Not today, a beautiful sunny 45 degree day. This thread got me pumped up to finish the install, just mounted the tank and pump, connected the level sensor connector, fluid lines and pump connector. Moved the jumper to DHB and turned the gauge on, the entire system is alive again! Time to go out for a ride a little later today!

Re: Injecting prior to turbo comp' impellers
 

http://farm8.staticflickr.com/7008/6...1e98f17e_b.jpg

Found this dyno at this location

A 315 cc nozzle pre turbo and a 130 cc nozzle post ic. Nothing else was done.

His spool was later, but his torque extended more. Is this the SHIFT of the compressor map that is talked about?

Re: Injecting prior to turbo comp' impellers
 

If anything, the nozzles position should be reversed. Also to make it a fair comparison, we would need more data like boost pressure to even make a call...

Re: Injecting prior to turbo comp' impellers
 

Man I can't wait to get on the dyno and even run some data logs around my .3mm pre-turbo setup. Just got a new clutch installed, need to break it in before I can really run 3rd gear full throttle logs. 450 miles to go.

Re: Injecting prior to turbo comp' impellers
 

On his website there is the Pre-Turbo-WI-Dyno-Test.zip attachment. In it there are .txt files that contain all data.

I sorted out the data into an excel file and removed the insignificant data.

Between 4250RPM and 5250RPM Post turbo map had more boost compared to Pre-Turbo and continues like that till redline but after 5250RPM PRE-Turbo makes more power and torque

Could be turbo efficiency ?

Re: Injecting prior to turbo comp' impellers
 

so, just activate injection past 5200 rpm...
I found .3mm pr compressor (Rotrex) having little effect.
.7 mm worked well.
I use 4x 0.3mm direct port now.

In genera found the more water methanol I injected the more power I was able to extract.
Sweet spot seem to be around 300 ml/min for my engine flowing about 1.5l of fuel per minute. injecting more adds not enough to justify the extra consumption.

Re: Injecting prior to turbo comp' impellers
 

I'll be testing a .3mm jet post MAF (3 feed from turbo compressor), boost activated at 5psi.

Re: Injecting prior to turbo comp' impellers
 

That's my thinking too. I'm actually thinking of doing a two stage with a ~50cc nozzle pre turbo @4psi and second stage @18psi (190cc).

Maybe 50cc not enough? I just need it to help me launch my autobox better.

Re: Injecting prior to turbo comp' impellers
 

This just in from my customer with RRWEP140 water injected 4cyl Volvo, power ~1000bhp

"Hi Mate,

First track test today. First run 309 kph @ 2,2 bar boost and second run 324 kph @ 2,6 bar boost and fastest speed for cars..:) I think 340 is reachable with this set up.

No engine problems this time and WI rocked...:) Couple of engine damages occured, one 5 cyl Audi and brand new Ford Focus RS. No happy faces from those guys but no WI either..😋 Below video from first run.

https://youtu.be/ZjCg1O2Tobc
"

Re: Injecting prior to turbo comp' impellers
 

It's been a while! I didn't even remember posting in this thread 14 years ago! I'm still messing around with turbo set ups, although they have grown a little since the early days. I re read this whole thread through to familiarise myself with findings and data from the past. Unfortunately for me there is nothing to compare to what we are trying to achieve.
I'd like to ask a couple of things from the technical guys here. I worked out that my total CFM capability of the engine/turbo combination is 5803cfm. This is an 8.6ltr V8 with twin 102mm turbos and based on 85% VE.
The system i'm using is a home brewed boost pressurised bottle with a 3 way switched by the ECU solenoid. The reasoning for this is keep it simple to find out how good it works first. 62psi of boost is the current level we are at.
This is being done for one reason. IAT's are 380f on meth with no intercooler. There is no room for the latter, so we figured this would be cheap and quick method to test.
The nozzles are aquamist 1.2mm check valve ones (440cc/min @ 60psi) mounted 1 inch from the compressor wheel. This was figured by holding the nozzle in my hand at 60psi, and "measuring" the cone. That distance makes the cone the approximate size of the inlet (102mm).

Obviously all of this is guesswork,and our R+D will tell us if it works or not. As helpful as Richard L is he can't tell us what we need to use as he has no data to back it up.We have plenty of sensors to know if our set up works or not.
It would be interesting to know if the nozzles we have now will be in the 2 to 3 % range, or will we be pissing in the wind...
Any tech guys left on this thread?

Re: Injecting prior to turbo comp' impellers
 

https://www.facebook.com/andy.frost....1781689836778/

Video of the aquamist nozzle we plan on using. Not sure anyone will be able to see this video but let's give it a shot.

Re: Injecting prior to turbo comp' impellers
 

I cannot see it as I do not have face book. Can you post it to youtube?

Re: Injecting prior to turbo comp' impellers
 

Try this Richard. https://www.youtube.com/watch?v=vgRd...ature=youtu.be

Re: Injecting prior to turbo comp' impellers
 

Nozzle set up on the Precision 102mm turbos. Obviously this is just the one turbo.
http://www.aquamist.co.uk/forum2/vbu...1&d=1550092986

Re: Injecting prior to turbo comp' impellers
 

Interesting idea to mount the nozzle.
Does anyone know if the atomization of an 1,2mm nozzle will be acceptable (for pre-turbo injection) between 20-30psi of pressure?

especially if compared against a nozzle with external air supply?

But if the atomization will be acceptable, it would make piping simpler.