that's news to me.......I am used to messing with nitrous solenoids, and it will will certainly roast a nitrous solenoid if you hold it in the energized position. I have one here that failed; fortunately, it was just the purge solenoid. I was dicking around with the purge solenoid doing some testing, and it just stuck open and starting smoking.

 

Thats interesting - I've used solednoids to control almost anything imagineable - including gasoline vapors, liquid gasoline, air (both vacuum and pressure), water, hydraulic fluid, etc and the only time I've ever seen a modulated solenoid was in turbo applications. Solenoids are typically on or off.

When I get home tonight I'll power up my spare solenoid and see what happens.

I'm not all that familiar with the nitrous purge solenoids - do they have an internal valve or an external valve? Like I said before, if the coil can be detached from the valve that can cause coils to melt, but on these 'all in one' smaller solenoids I can't imagine the coil generating much heat at all.

 

I am not sure of the valving on that nitrous solenoid. the purge solenoids are the same as a regular nitrous solenoid though.

here's a note from Nitrous Express's website:

"Note: The nitrous and fuel solenoids are rated only for intermittent duty. Do not engage either solenoid for more than 20 continuous seconds. Solenoids that have “burned or scorched” electro-magnets will not be replaced under warranty."

 

That's interesting - I've never seen a solenoid 'rated' for intermittent duty. I'm guessing that that is just a way to make them cheaper?

 

I am thinking that it has more to due with the current needed to drive those solenoids (due to the pressure of well over 1000 psi pressing against the gate.) all that current in a compact solenoid is bound to generate heat.

anyway, we are getting away from the BCS........ the BCS doesn't need to be as strong, and I suppose it can take the heat without burning up its coil. I've never even checked it out.

 

I was using the Unichip one that came with the APS kit. It wasn't holding the boost up at altitude like it should have, plus the perrin offers a little more because it has 3 ports.

 

Isn't the Unichip solenoid a 3 port? I still have mine, I'll take a look at it tonight.

There was a lot of controversy over the Unichip solenoid not working with the UTEC, but I keep wondering how it could work perfectly with the Unichip but not the Utec???