waterinjection.info  

Go Back   waterinjection.info > Injection Theory (what it is and what it does) > In Cylinder Effects

Reply
 
Thread Tools Display Modes
  #31  
Old 03-12-2003, 01:53 PM
Forum Admin Forum Admin is offline
Senior Member
 
Join Date: Oct 2003
Posts: 127
Default

With a properly implemented water/methanol injection system, you should be able to arrive at maximuum power AFR and MBT without ever experiencing knock.

I tune without water injection to the threshhold of knock and then pull back a bit to find my base tune that I revert to in the case of a WI system fault.

Generally I only monitor for knock during tuning - I use this:

http://home.netcom.com/~bsundahl/kno...nockSounds.htm

And the DIY knock cans:

http://home.netcom.com/~bsundahl/kno...ten/listen.htm

I attach this to my tuning computer while tuning.

Of course I am relying on my ECU's knock sensing / timing retard response if I cross the edge somehow.
__________________
Forumadmin
Forumadmin@waterinjection.info
Reply With Quote
  #32  
Old 03-12-2003, 02:29 PM
Philip Philip is offline
Member
 
Join Date: Nov 2003
Location: UK
Posts: 31
Default

Thanks, that seems the easiest to use and I could just keep an ear peice in whilst tuning and listen out for anything unusual. Would be a very nice facility and peice of mind whilst tuning. Where would you recommend putting the mic? I have a V8 so would it be possible to bolt it onto the inlet manifold?
Thanks again really pleased with that suggestion as it would be very cheap,
Phil :lol:
__________________
http://www.replica-cobra.co.uk
Reply With Quote
  #33  
Old 04-12-2003, 12:40 AM
Forum Admin Forum Admin is offline
Senior Member
 
Join Date: Oct 2003
Posts: 127
Default

This particular DIY relies on a factory knock sensor and taps into its signal. I use my laptop amplifier to listen in.

Another DIY that includes information on building one with a microphone -

http://www.autospeed.com/cms/article.html?&A=0353

If you do not have a factory knock sensor the mechanical one brad mentioned also works very very well and likely would be easier than building one with a microphone unless you already have the audio electronics skills.

You can get a stethoscope and tubing routed to a 4" copper tube with 2" flattened and a hole in the end for bolting to the engine.

The intake may work but attaching to the block would be preferable.
__________________
Forumadmin
Forumadmin@waterinjection.info
Reply With Quote
  #34  
Old 05-05-2004, 02:42 PM
blown408 blown408 is offline
Junior Member
 
Join Date: Mar 2004
Location: michigan
Posts: 5
Default

I made that DYI unit it works great and it is very cheap to make, try radio shack.
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 Off

Forum Jump


All times are GMT +1. The time now is 09:19 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.