Am I correct in assuming that the cheap little brass fittings that come with boost gauges will not hold up in an exhaust manifold? What type of fitting should I be using that can handle the heat?
What kind of fitting in exhaust manifold for drive pressure?
- Thread starter thunder550
- Start date
I used brass compression fittings. Worked just fine. Brass doesn't melt till 1700 degrees, so unless you get your manifolds glowing..you won't be melting it.
I've had brass compression fittings with about a foot of brass tubing, then nylon to my gauge. Going on 2 1/2 years I think? With no issues
Ok that's what I did as well. Coiled up about 2 feet maybe and then ran a poly line off that. Worked great.
Do you have any kind of valve or anything in line? I've read about putting something in there to reduce the pulsation/vibration?
Some guys run a brass inline filter, line will soot up eventually. Good practice to back purge the line every so often.
Me personally, I would run a SS swagelock fitting, and 12" of 1/4" OD .065 wall SS tube. Will handle heat, and vibrations better.
Me personally, I would run a SS swagelock fitting, and 12" of 1/4" OD .065 wall SS tube. Will handle heat, and vibrations better.
Mine is brass fittings to a copper coil. Then it's got a paintball gun filter on the end of the coil and then my gauge right on the filter.
I coiled up 3' of copper and put my Isspro sender on the end 2 or 3 years ago and haven't had a problem and the needle moves nice and smooth
Sounds like if I get a long enough length of copper tube I should be ok. I'll probably get about a 5 foot section to run directly from the gauge, then coil up all the excess down by the manifold.
I have used both mechanical and electric style drive psi gauges. The electric sending units seem to hold up much better to the soot, don't plug up. I used aluminum coil from a $9.00 choke kit through napa. I have used this setup for a year plus on the dodge with no issues.
Ok so what do you guys think of this? I have 12 feet of copper tubing between the manifold and the gauge. Will coiling up the tubing like this dissipate heat, or will the coils touching each other transfer heat like the coils aren't there? I can't figure out how to coil up the wire in a different way that doesn't flop around a lot.
So this little guy is ok?
That'll work fine, watch for it loosing up though. That is what I use, 2' of coiled copper and then an electric sending unit. The tube will soot up without a filter depending on the application, I change my copper tube once every two seasons on a race truck.
More footage coiled tight should be fine, if using normal boost tube to the gauge then try it out (nothing to lose except a couple inches of tubing). If using a electronic sensor, I think you'll be fine.