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Chingy
30-12-2008, 04:07 PM
Hi guys. Iv just joined the forum,and im a newbie to methanol injection. I live in south africa and drive a uno turbo(mk2), which is a 1400cc turbocharged.

My mechanic has just installed a meth kit in the car for me,but its a self made kit. Never the less,it works,which is ok. I have a couple of questions reguarding my system though..

The injection sits in my intake pipe just before the throttlebody. Now,is it suppose to spray a mist of meth, or a fine jet of meth?

Secondly, its a very standard kit which kicks in at 1bar boost(via a adjustable hob switch), which i dont know how much PSI that is, but when do you guys suggest it kicks in? I must still get the car re mapped with the kit on.

I have 550cc injectors on, witha large intercooler, and a TD04L 13T Turbo running at 1bar, at which i made 115kw and 220nm(before the meth kit,and its flywheel reading). I want to push out as much boost as possible,
What size nozzle should i use on my 1400cc motor? You guys think il get near 2bar boost with this setup and meth? Its a alcahol pump by the way, so im running pure methanol. I want to run in the region of 150 - 200kw, so does the nozzle size depend on the power the car is currently making, or the power its planning on making with meth?

Replies will highly help me...thanx!
Richard L
30-12-2008, 05:33 PM
It will be easier to estimate the meth flow aganist the fuel flow.

I normally recommend the following:

- 100% water: 10-15% to fuel
- M50:W50 15-20% to fuel
- 100% methanol: 20-25% to fuel
(figures are based on knock free conditions)

Just total up your fuel injectors
Chingy
30-12-2008, 07:34 PM
I dont understand what u mean about the fuel percentage with 100% meth....

Could u please answer the rest of the questions, it will really help me understand more.
Chingy
01-01-2009, 03:06 PM
Anyone?
derbybrit1
11-01-2009, 06:22 AM
It will be easier to estimate the meth flow aganist the fuel flow.

I normally recommend the following:

- 100% water: 10-15% to fuel
- M50:W50 15-20% to fuel
- 100% methanol: 20-25% to fuel
(figures are based on knock free conditions)

Just total up your fuel injectors

I believe Richard is saying that you select a nozzle size where the added water/methanol by mass flow (#/hr) is 10%-15% of the fuel flow in #/hr. You are essentially feeding a fixed ratio of cooling/anti-knock fluid versus fuel
Richard L
13-01-2009, 11:32 AM
Can you tell me which meth system is on your car at the moment.
Chingy
16-01-2009, 02:13 PM
As i mentioned in my 1st post on this topic, its a kit my mechanic put together 4 me. Why?
nutron
16-01-2009, 03:12 PM
It is impossible to give you the answer you need without knowing the pressure and flow rate of you water/methanol pump and your fuel consumption rate. I would just start with the smallest nozzel you have and work up slowly until you experiance any sort of abnormal performance, then go back a nozzel size.
Chingy
17-01-2009, 01:43 AM
Grr..is there no one in cape town that can check my system out and help me :(
Richard L
17-01-2009, 12:00 PM
If you are not sure teh flwo of your system, spray the water into a measuring glass for one minute. Once you know the flow rate, you can then work out the water to fuel ratio of 10-15%.

It is very difficult to help you without this infomation.