[russjonesr]

Hi Raj,

Just wanted to post a pic..

[Tinsta]

Ahh cool, thanks been looking at options. Think I sussed you're secret, the magic cable-tie 😋

[RajB]

Much appreciated Russ.

Tin and I will be getting the welding gear out LOL.

[Cerbera9]

What size nozzles are you running in this dual set up?

[Tinsta]

I think for dual setups, it's better to go with twin CM7s, which is what Russ is running.
Once I get the 2nd bung welded, I've got a CM10 at the moment, but will try with a CM5 too.

[russjonesr]

Yep as Tinsta says I'm running DO7's. I think the Devils Own and Cool mist work out pretty much the same. I added the extra bung as I was having issues with my trims... Meth was flowing to bank 1 more than bank 2. I pleased to say the improved atomisation and position of the second Bing has improved the balance.

[AWSAWS]

Originally Posted by russjonesr

Yep as Tinsta says I'm running DO7's. I think the Devils Own and Cool mist work out pretty much the same. I added the extra bung as I was having issues with my trims... Meth was flowing to bank 1 more than bank 2. I pleased to say the improved atomisation and position of the second Bing has improved the balance.

Was it bank 1 that was richer Russ? (Lower trims)
That's really interesting if it is because you'd think the meth would flow to 4,5,6 more easily with our manifold design.

The mass of the meth would obviously not make it want to change direction and momentum. Angular acceleration etc.

One chap did some flow simulations:


http://dreamdesigndrive.blogspot.co....?view=flipcard

I run a pair of CM7's guys and they are like a hose. Russ did a calc and I think they were spraying more than I need but I'm never going to complain about to much methanol

I think a pair of cm5s was closer to what is suggested as ideal.

[RajB]

I'm still torn whether to just go with the single CM10 to start with or straight to dual CM7's as both of yourselves (Jack/Russ) have had issues and had to go this route anyway.

[AWSAWS]

I went dual after reading about the issues people with singles were often having. The main benefit is that the duals produce a finer spray but if you had a big single as far away from the throttle body and manifold as possible, you'd probably be OK.

[AWSAWS]

I think some have still had trims problems even with a dual setup.

[russjonesr]

You are correct Jack...Bank 1 was richer...now I'm using the DO7's the trims are much much closer!
Just looking back on the data..>Devils Own link the name with the flow so a DO7 flows at 441cc/min which works out at 7 US gallons, a DO10 is 10 US gallons and so on. Coolmists CM7 is actually flows at 10 US gallons per hour. So I'm pumping 14 US gallons per hour...a little more than a single CM10 (13 US gallons)


http://www.promracing.com/methanol.php
http://forums.nasioc.com/forums/show....php?t=2466060
http://www.methanol-injection.co.uk/...ion/nozzlecalc

I think dual is better simply because of atomisation...not because you can push more in.

[Cerbera9]

How much are people paying for Meth? I just bought 205L which works out to £0.70 per Litre (inc delivery)

[AWSAWS]

Originally Posted by Cerbera9

How much are people paying for Meth? I just bought 205L which works out to £0.70 per Litre (inc delivery)

That's wayyyyyyyyyyyy cheaper than me but I generally only buy 20 to 25L each time. Methanol is hygroscopic. It will absorb any water in the air space of the container, which should be kept sealed. Keep it out of direct sunlight as well. I know bacteria will also break it down but I don't know at what rate.

That won't matter too much if you plan to dilute it down.

I pay something like £1.55 a litre. I suppose it lasts around 3 months.

[Cerbera9]

I have a friend who uses it in his Supercharged E39 M5 at about the same rate (50/50mix) I do so we went halves on a barrel, financially it made sense as like you we were buying 20 to 25L each time we ordered.

[russjonesr]

Originally Posted by Cerbera9

How much are people paying for Meth? I just bought 205L which works out to £0.70 per Litre (inc delivery)

Holy shit, 205L a time

I wouldn't be happy storing that much fuel in my garage There maybe a clause in your home insurance?

Plus a 20L drum last me around 8 months...

[AWSAWS]

Originally Posted by russjonesr

Holy shit, 205L a time

I wouldn't be happy storing that much fuel in my garage There maybe a clause in your home insurance?

Plus a 20L drum last me around 8 months...

Make that 4 now you've got dual nozzles

Come on Russ. You can do better haha!

[Cerbera9]

Originally Posted by russjonesr

Holy shit, 205L a time

I wouldn't be happy storing that much fuel in my garage There maybe a clause in your home insurance?

Plus a 20L drum last me around 8 months...

Haha I would dream of storing that much at home! No my mate that I share the drum with has a commercial garage with secure storage for drums like this. I can just fill up or collect as I need it, just works out much cheaper for us this way

[Cerbera9]

Originally Posted by AWSAWS

Make that 4 now you've got dual nozzles

Come on Russ. You can do better haha!

I use approx 4L of 50/50 mix per week

So half a 205L drum should be a years supply

[russjonesr]

You two have a heavy right foot

I know Jack will race a disability scooter

[AWSAWS]

Originally Posted by russjonesr

You two have a heavy right foot

I know Jack will race a disability scooter

Electric vehicles are the new contenders

Did I post this before?

Postman Pat is actually a race gokart.

[RajB]

Ha ha quality.

So is that the way to go now. I might as well forget Meth and just go ERS.