Yes - the solvent based inks will turn the water based plastic bits like the head manifold to a sticky black puddle of goo literally within a couple of hours..... I've seen this firsthand. Solvent based inks will not work in a water based head manifold.
Aside from the heat issue while technically possible its not really economically feasible (and potentially not possible) to convert the machine to run solvent based inks. You will need to replace the following
Head Manifold (this one is particularly difficult. The problem is that machine has a relative of the DX5 head used in many solvent machines but the one in the 1100 is a 5 channel head instead of an 8 channel head. I've not looked into it but unless there is some solvent based machine that uses that same 5 channel head then you will not be able to get a solvent resistant head manifold. Now with the similarity to the DX5 you "might" be able to carefully hack up a DX5 head solvent manifold and then drill it in just the right spot within a 1/1000th of an inch so that it will properly screw down to the head and seal.
So if you manage to get past this hurdle. Then you will need a lot more..... dampers. I have no idea what the dampers in that machine look like. If they are like many of the Epson pro desktop machines though, they might be built into the small ink cartridges. Again - not going to be solvent resistant so you will have to do some digging to see what that is setup like.
The pump - the tubing in the pump will need to be replaced with Tygon or some sort of exact equivalent size inside and outside diameter solvent resistant tubing of the exact same shore # (this is a rating of firmness which the pump will need to be the same).
Capping station top.
All ink lines.
Possibly the waste ink container (don't want that to melt and leak)...
The print head itself less the manifold they generally come with will almost certainly be fine with the solvent ink. Another issue though is solvent inks have a different density/viscosity than water based inks. As such they require different voltages for the head to properly jet them. This is why machines like Mimaki you have to tell the machine what type of ink you are using. Its so that the printer uses the right voltage waveform for the type of ink being used. It would likely work though even without this. The print quality might suffer a bit though.
In the end. Not worth the trouble. What is your time worth? You can get a used Mimaki JV33 or some other recent generation
eco solvent based machine for three to ten grand depending on the size, features, brand, condition, etc.
