sicripp83 Posted May 1, 2015 Share Posted May 1, 2015 hello all, I have been reading for some time on the building of l28et motors. I have read that some people run water injection, while others do not. I understand that it is used to cool the air/fuel mix. but wouldn't a efficient I/C be a cheaper, less headache solution? I only ask because im trying to get ready to build one, and trying to do my home work. any input would be great Quote Link to comment Share on other sites More sharing options...
ktm Posted May 1, 2015 Share Posted May 1, 2015 Water/methanol injection is used to pull a significant amount of heat out of the process albeit it differently. Methanol evaporates much more quickly than water and is best used to cool the intake charge. I used to dump upwards of 1000 cc/min of methanol at full boost and my intake charge would be around 50 degrees. While some would reach the combustion chamber, it is not nearly as effective as water for in-cylinder temperature reduction. Water, on the other hand, has a much higher latent heat of evaporization and does not evaporate as quickly. However, it has a much greater potential to pull more heat out of the process. It primarily pulls heat out of the combustion chamber itself. The IC, while effective and better than nothing, is not nearly as "efficient" as removing heat as methanol/water. However, it is MUCH safer. Water and methanol injection are great......if you have fail safes. Quote Link to comment Share on other sites More sharing options...
sicripp83 Posted May 3, 2015 Author Share Posted May 3, 2015 that makes sence. to be honest, iv heard it mentioned here on HybridZ more than any mustang web site I used to browse back when I was into fox bodies. so I had to find out what it was all about. thanks going to do more google searches and see what else I can find. Quote Link to comment Share on other sites More sharing options...
ktm Posted May 7, 2015 Share Posted May 7, 2015 There is a TON of information out there. I highly recommend www.turbobuick.com for some good discussions on the subject. They are primarily GN guys but know their stuff. Quote Link to comment Share on other sites More sharing options...
gorillaman2012 Posted May 31, 2015 Share Posted May 31, 2015 For a turbo Tom setup (holley 4 barrel turbo system) using an intercooler was a little difficult since the system was what's called a "draw through" system instead of the usual "blow through" meaning the intake side of the turbo is after the carb which is drawing in air/fuel mix instead of just air. Fuel helps to cool the intake charge but since it's butted up right next to the turbo you can't get an intercooler in there. So having a water/methanol system in that kind of kit helps to reduce heat and push the boost you can run. Just don't run out of water with this and no problems! Lol Quote Link to comment Share on other sites More sharing options...
280zex Posted June 12, 2015 Share Posted June 12, 2015 My blow thru holley didnt like water/alcohol spray, so i went with a/c cooled intercooler Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted November 28, 2015 Share Posted November 28, 2015 Two side benefits of water injection are a bit more torque (steam expands) and keeping carbon deposits down in combution chamber and back of valves... Quote Link to comment Share on other sites More sharing options...
NewZed Posted November 28, 2015 Share Posted November 28, 2015 BMW's using it in their Safety car. It must be safer. http://m-power.com/_open/s/varlink2.jsp?id=3301&lang=en Quote Link to comment Share on other sites More sharing options...
ihiryu Posted November 30, 2015 Share Posted November 30, 2015 The problem with water/meth is that you really have to tune for it. Virtually what you end up doing is leaning out the mixture for the meth to make up for it, then you can add timing. Problem is the lack of fail safe measures. Most of the time, the ECU won't know if it's spraying meth or not. And then it runs leans and goes boom. Quote Link to comment Share on other sites More sharing options...
Gixxer Squid Posted December 3, 2015 Share Posted December 3, 2015 I am in the process to full E85 conversion. No more heat issues....Granted I went with larger fuel lines and injectors to support. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.