100% meth causes weeping issues with push fittings, even if cut square. I've tried many different types, some are better than others, but it's usually only a matter of time. Water seems to be fine with the quick connect fittings. This is why the Aquamist systems have been changed over to 100% compression fittings. Custom peices are being fabricated for the "Y", "T" and other such fittings to complete the product line.

 

There are a lot of cheap low cost push connect fittings out there that are not rated for the pressures and will lead to leaks. Problem with compression fittings is if you get the ferrule slightly cocked during assembly it will score or deform and leak.

Had some compression fitting fail on my dishwasher a while back, leaked all over after 2 years of service. Replaced them with push connect fittings and problem solved

I think one thing people are not considering with direct port injection is that you have constant spray. This can result in fluid accumulation on a closed inlet valve. Port Fuel Injectors are timed to the opening of the inlet valves and so should the meth injection if doing this option.

 

^^^ BINGO!

This is why smaller jet sizes are better. After market IGNITION systems are a must. With 100% meth corrosion to the valve seat can and will happen much faster.

As for the line, with 100% meth I have seen a need of replacing the line every 6 months or so to help with this weeping issue. A new square cut line wont leak, but over time and heat it can and often does. Just one of the many issues with a 100% meth mixture. More maintenance.


Evan Smith

 

It's to bad your dishwasher doesn't run on methanol. It would seem that push style fittings need to be installed correctly to not have issues as well...I guess I will keep everyone posted on how long they last.

I have not even thought meth accumulation on a closed valve. Do you feel that it would not be an issue normally?, if a system was oversized?

 

I think push connect is better if there isn't much vibration like this application in cars.
I am looking to change all mine to compression fitting.s

 

quick connect is definitely better. once that ferrule crushes it's on the line for good. only way to fix a leak is to cut it off and install another ferrule.

 

There are basically two types of compression fittings:

One uses a ferrule and the other uses a "squeeze action" between a hosetail and nut. The ferrule type is quite an old design in the pneumatic industry.

 

the hosetail type that i've used have also crushed and locked onto the tubing. maybe i'm stronger than i thought.

 

You must be Mr ironman!

Here is what they look like:

 

lol i must be thinking of something else. nm.

 

must be the type with ferrule?

 

To update an old thread, here are the production pieces on their way across the pond.

 

Wow, the finished product looks great! About how much are they going for?

Any updates on the direct port setup?