I just installed a nitrous system on my z06 and I mounted the fuel and nitrous solenoids on a bracket I made. The bracket is made of aluminum and attaches right to the cylinder head.

I havent run the system yet because I am waiting to get it on the dyno to check AFR, but I noticed after a drive when I pop the hood and touch the solenoids, they are very hot. So the heat from the head is heating up the bracket and thus heating the noids. I am guessing they are at least 150*. I doubt they get as hot as the motor (~190-200)

So my question is, do you guys think I should try to relocate the noids or is this amount of heat fine? I also worry about this heating up the fuel and nitrous as it passes through. I really like the location of the noids, but I guess I could relocate them although it would be a couple more hours work. I am thinking I could make another bracket that attaches to the intake behind the throttle body.

 

https://ls1tech.com/forums/nitrous-oxide/663361-heat-solenoids.html

 

 

http://www.retrorelics.net/jim/Board.../Hosting/1.jpg

http://www.retrorelics.net/jim/Board...Hosting/13.jpg

Here is what I did. My brackets are mounted to the head and they get so hot they will burn you as soon as the engine gets hot. I found the 4 round silicone insulators at McMaster Carr. The aluminum plate that the solenoids mount to and the solenoids them selves stays soooo much cooler than the brackets. It sure can't hurt.
Not great pics but you can get the idea. Also don't use rubber insulators because they get soft way below 200 degrees.

 

That's a pretty standard location. Good noids and you'll be fine. Most anywhere under the vette hood will reach the same temp. I tested this therory with a heat temp gun, you can do the same with your hand.
Robert

 

if you used steel instead of aluminum it wouldnt get so hot, thin aluminum will pull heat off that location very quick, thicker aluminum might help and would take a little longer to heat up, steel would be your best bet, it will get warm still but take a lot longer...

 

You are right. Aluminum does transfer heat faster than steel but the brackets are steel and they get hot as heck as soon as the engine gets up to temp which is not verry long.

 

I copied TerryS and in the short term it does help using the rubber isolation method. However, over a longer period of time, heat soak will heat everything to about the same temp under the hood. Now this can still be benificial if you have time to open your hood between runs, the noids will cool off quiker with rubber mounts because of being isolated from the big heat sink-the engine, so...
Robert

 

I have felt the solenoids it the summer time when it is 100 degrees out side. If you drive the car long enough the solenoids do get warm but not close to how hot the head and bracket get. If I put my fingers on the head or bracket I will get burned. When I put them on the solenoids or the plate they are mounted on it is pretty warm but not close to how hot the head & bracket get. I don't know for sure but I will guess the solenoids are 50 degrees cooler than the head & bracket.

 

i used a 3/16 steel plate welded to my 1/8 steel bracket, while the bracket gets warm it doesnt get "hot"....

 

What is your bracket bolted to?

 

True story. My noids mounted directly to the heads on a L bracket where allways a tad cooler than the engine, but the same as everything else outside the block. I used 3/4 inch spacers from the head. When i changed to isolation mounts I found minimal improvemenets, and have since moved back to my original mount technique for looks sake. I also upgraded noids to more powerfull NX Stg 6 over the whimpy NOS power shot noids.
Robert

 

passenger side head

 

You will not have a problem, good noids will not be effected. All metal parts will be very close to the same temp after awhile. Not sure but over temp saving maybe 20-30 degrees isolating from the head..

 

That is a new one on me. I do not see any way a steel bracket bolted to the head will not get the same temperature as the head pretty quick. I know mine did.

 

it will get close to the same temp......eventually...but not like aluminum,especially thinner stock

 

Thanks for all the responses, but I think I got the best spot of all here. I ended up changing the location....

NEW LOCATION:




OLD LOCATION:

 

Looks nice, The line could be made a tad shorter.

 

Its in the works. Gonna do 2 new hoses with 90* bends on each end.
One will be 4" long and the other about 7".