waterinjection.info  

Go Back   waterinjection.info > Injection Applications (making it work) > Gasoline Forced-Induction

Reply
 
Thread Tools Display Modes
  #51  
Old 19-07-2017, 09:40 AM
rotrex rotrex is offline
Senior Member
 
Join Date: Jan 2014
Location: Germany
Posts: 153
Default Re: Nozzle spray angle...

Again,
please measure the pressure after the throttle body before swapping air filters.
Only takes a few minutes and gets you a real idea how good or bad that or the new filter is.

You can literally route a silicone pipe through the passenger window. it is only a temporary measurement.
Hook up a analog gauge from eBay and record it with your cell phone. After than watching the gauge at WOT.

Just swapping and hoping things get better is the most expensive way to do things.
This is why most car dealers this days lost the art of properly diagnosing issues.
They read codes and swap expensive ECUs and other modules to only find that it was a single blown or corroded fuse socket in the end or water in spark plug holes.
They don't care and write you a 1000$ bill that should have been a $50 bill with common (car) sense.
Reply With Quote
  #52  
Old 20-07-2017, 02:15 AM
jondee86 jondee86 is offline
Member
 
Join Date: Dec 2015
Location: New Zealand
Posts: 36
Thumbs up Re: Nozzle spray angle...

Quote:
Originally Posted by rotrex View Post
Please measure the pressure after the throttle body before swapping air filters.
Good suggestion Since the pressure loss of the ducting between the throttle
plate and the s/c inlet is fixed, I shall tap a fitting into the throttlebody in front
of the throttle plate. That way I can measure the pressure loss of the section
of ducting with filter that will be changed.

I have found cheap China made digital differential pressure meters on Aliexpress,
and this gives me a good reason to buy one, plus an infrared thermometer for
reading the temperature from each cylinder at the exhaust manifold.

Cheers... jondee86
Reply With Quote
  #53  
Old 16-08-2017, 01:23 AM
jondee86 jondee86 is offline
Member
 
Join Date: Dec 2015
Location: New Zealand
Posts: 36
Default Re: Nozzle spray angle...

Have the meter and found a ready made tube under the throttle body that
I could connect the meter to with a short hose. Just a medium kind of free
rev from under the hood gave a reading of negative 10.67kPa, so I would
expect more if I revved to redline. The meter holds max and min pressure.

Have to check to make sure the tapping is in front of the throttle body, and
figure out a way to secure the meter in the car when I do a pull to redline.
I'm not a fan of free revving an engine to the limiter.

EDIT: Tapping comes from the throttle just in front of the closed butterfly.
When the butterfly opens it passes over the hole after moving only about
3mm from fully closed. I think the tapping was for the evap system. I'll have
to do a few tests to make sure the max pressure drop readings are logged
when the butterfly is fully open.

Cheers... jondee86

Last edited by jondee86; 16-08-2017 at 07:12 AM. Reason: More information added...
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT +1. The time now is 12:17 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.