Jump to content
SAU Community

Recommended Posts

RE - The pic below...

I have a brass nut which my temperature probe fits into and will be using it to measure intake temps. What is this intake piece (circled in red in the pic) made from? Cast Aluminium? Can it be soldered/brazed/welded to brass at all?

If not, how else can I join this brass nut onto the intake pipe? Maybe a steel washer between the brass nut and intake pipe?

post-1179-1146109224.jpg

Link to comment
https://www.sau.com.au/forums/topic/115141-what-is-this-intake-pipe-made-from/
Share on other sites

I'm looking to do much the same thing! I'd really like to know what the intake temps are, and find a good location to mount something threaded. If you don't mind, mearcat, what kind of temp probe are you going to use? (and come round and make my engine bay as clean as yours!)

I'm actually measuring 4 temps, with 3 of them using a K-Type thermocouple probe - mainly designed for testing flue gasses. I'll PM you with more details

As for the engine bay - it came like that from Japan a few months ago! Nice eh? :P

Why not simply tap a hole into the cross-over pipe, and screw the temp probe directly, rather than through an adapter?

I did think of that but I talked a welder this morning and he said that the wall thickness of the cross over pipe is not really thick enough for a decent thread for (relatively soft) aluminium. I have got him to weld a small block of ally on the side on the pipe to increase the thickness and tap a thread through that block and the pipe wall instead.

So I will now end up screwing the probes' compression gland directly into the pipe.

wow! Great read, Mearcat!

I only want the intake temp... would you suggest that a thermistor for budget/heat-range?

Pity that I can't find a decent threaded temp probe with display... I spent aaages making the consult cable, and I don't have much time on my hands these days. =[

wow! Great read, Mearcat!

I only want the intake temp... would you suggest that a thermistor for budget/heat-range?

Pity that I can't find a decent threaded temp probe with display... I spent aaages making the consult cable, and I don't have much time on my hands these days. =[

If you wanted to read a single temp, as a cheap option I would suggest this thermometer from Jaycar http://www.jaycar.com.au/productView.asp?ID=XC0224 These are quite accurate and if the cable isn't long enough, you can solder some more wire on it without affecting it's accuracy too much. This reads from -50degC to +150degC too.

My temperature gauge project is using thermocouples with braided stainless sheath to stop the wiring from frying around the turbo and engine - they are a little more expensive that std thermocouples that you get from Jaycar etc, but temperature probes and thermocouples genarally are not threaded. You will need a compression gland to seal around the probe.

btw - See the attached pic for my weld & thread tap result

post-1179-1146206924.jpg

LOL! I have been looking at that unit for a while actually!

I was a bit concerned about how hard it may be making it sit in a hole, but the gland option is always there. Threaded like the o2 or cat sensor would have been nice though.

Weld/tap job looks good!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • careful when running the car after a boil over. Ive heard you can lose enough coolant that it won't show the right temps because of too much air in the system (or something like that). Make sure the levels are good before trying again.  Maybe a mobile mechanic can come have a look with their scan tool ?
    • OK, just for some extra clarity - there is more than one option at Frenchy's. 1. You can buy the whole kit - with or without the actual compressor. The whole kit includes mounts, hoses, condensor, etc. That's either ~$2200 or ~$2800. No surgery required with this option. 2. You can buy just the bracket (~$600), or the bracket with the compressor (~$1200). Either of this or the above option "without the compressor" is if you already have an Echo comp or you are able to source one locally. Whatever the case, in this option, you will need surgery done on your hoses to adapt to the new compressor. When I said "the Frenchy's kit", I meant the whole kit in option 1. It is obviously somewhat more $$ than a $1500 OEM compressor. But if I had to spend $1500 on an OEM compressor, I would certainly consider spending double that to renew and significantly update everything forward of the firewall. Another option is to rebuild your original compressor. My R34 comp is currently dead and I will be most likely doing that to it if the spare one in the shed is also leaky.
    • I’m thinking that’s the route I’ll  go, thanks for the input!
    • Hey all, my 2004 Nissan Skyline 350GT overheated the other day with coolant boiling and leaking out of the coolant reservoir when I was parking. So today, I started it up again just to see if it was a thermostat/head gasket issue. After about 20 mins of running, temps were normal again, no coolant was leaking out and the upper reservoir hose was warm but my engine suddenly cut off. I checked the oil dipstick and cap when it was running and there was no white foamy residue and the exhaust did not have white smoke. I tried starting up the car again but it would only crank, similar to when I had a camshaft sensor issue just that now there’s no check engine light on the dash. Any ideas? Unfortunately I don’t have an OBD2 that can read the Nissan's programme.
    • Bump on this to not make another post, had a ‘head drain’ leak on me and have the engine out as we speak. Planning on just putting a new freeze plug back in , plug the tapped holes and just be done with that headache.    Now I still want to relieve pressure to allow oil to pass down the blocks returns easier. I’ve seen catch cans with multiple vents help folks with this issue on this forum.  I’m wanting to make my own. I have some pictures here of my setup if anyone can help how I should plumb and design the catch can I would deeply appreciate it !   rb25 Oil upgrades: 1.0mm restrictor n1 pump/billet gears extended crank collar  extended sump with trap doors/w welded fitting    
×
×
  • Create New...