hadyn Posted December 10, 2005 Share Posted December 10, 2005 Im struggling to find any info on exactly what hose I should plumb my ACT gauge into. Anyone got any pics of which hose I should T into please? Link to comment Share on other sites More sharing options...
uk-rich Posted December 10, 2005 Share Posted December 10, 2005 after the intercooler and before the throttle body Link to comment Share on other sites More sharing options...
Justin Posted December 10, 2005 Share Posted December 10, 2005 I've got one probe in my turbo out air pipe before intercooler and one probe in intake manifold. Link to comment Share on other sites More sharing options...
JohnA Posted December 10, 2005 Share Posted December 10, 2005 #2 location is the most critical. Just make sure that the probe is meant to survive under those conditions (thermal cycles, boost). Some have been known to snap off and go for a ride --- perhaps eating up valve seats in the process Link to comment Share on other sites More sharing options...
hadyn Posted December 11, 2005 Author Share Posted December 11, 2005 Thanks for the info guys Just make sure that the probe is meant to survive under those conditions (thermal cycles, boost). Some have been known to snap off and go for a ride --- perhaps eating up valve seats in the process This is most worrying! Im presuming the kit i've got is meant for turbo'd car applications as it has intstructions that are for applying it to a car and has a ready made T-piece. How likely is the above to happen? Link to comment Share on other sites More sharing options...
JohnA Posted December 11, 2005 Share Posted December 11, 2005 One I've got is from nomadracing and it is specific for charge temps on cossies and the like. The guy said explicitly NOT to fit it straight in the charge air path, because he knows of several that eventually broke off and got sucked in by the engines. I followed his instructions and fitted it in a T that is dead end (going to a pressure sensor I've got) but it's a crap location. It doesn't follow the variations of charge temps, rather becomes a glorified engine temp gauge. Link to comment Share on other sites More sharing options...
hadyn Posted December 11, 2005 Author Share Posted December 11, 2005 So you're saying theres a big risk of this happening if i fit it in location 2? Link to comment Share on other sites More sharing options...
Dragonball Posted December 11, 2005 Share Posted December 11, 2005 What about using the same fittings as the NOS on both of the plastic stock pipes - One on the S shaped one (turbo side) and the other on the 90 degree bend going to throttle body...? Link to comment Share on other sites More sharing options...
hadyn Posted December 11, 2005 Author Share Posted December 11, 2005 Thats an idea if it means it will protect the sensor Link to comment Share on other sites More sharing options...
JohnA Posted December 11, 2005 Share Posted December 11, 2005 So you're saying theres a big risk of this happening if i fit it in location 2? location 2 is the one that will give you the best results. Just make sure that the sensor tip is engineered sod that it will not flake off, that's all. Link to comment Share on other sites More sharing options...
hadyn Posted December 11, 2005 Author Share Posted December 11, 2005 Thanks for making me worry about the sensor and not fit it today John!! Link to comment Share on other sites More sharing options...
hadyn Posted December 19, 2005 Author Share Posted December 19, 2005 Would I be OK to plumb the gauge into pipe A in this pic, which im currently T'd into for a boost guage? The instructions in my kit say that you should look for a boost gauge pipe? Link to comment Share on other sites More sharing options...
Dragonball Posted December 19, 2005 Share Posted December 19, 2005 What are you trying to measure?? If you want to measure the air temp before the turbos etc - then this has to be in a relevant air flow Link to comment Share on other sites More sharing options...
hadyn Posted December 19, 2005 Author Share Posted December 19, 2005 air temp after turbos and intercooler Link to comment Share on other sites More sharing options...
JohnA Posted December 19, 2005 Share Posted December 19, 2005 It really has to stick out in the airflow. I can't see it following the charge-air temps otherwise. Link to comment Share on other sites More sharing options...
hadyn Posted December 19, 2005 Author Share Posted December 19, 2005 surely the air fed the boost gauge will be of temperature? Link to comment Share on other sites More sharing options...
JohnA Posted December 20, 2005 Share Posted December 20, 2005 yeah, but it doesn't follow the temperature changes closely enough. Once the engine hits operating temps the charge temp will appear to be static, irrespective of boost conditions. It will appear to be affected much more from the radiator fan than boost, which is not true for charge-air temps. Link to comment Share on other sites More sharing options...
Lucifer Posted December 20, 2005 Share Posted December 20, 2005 The probe must be in the flow of air, not taken from a Tee. Fluid Dynamics 101:- "a locked volume of Fluid (air) will not show a thermal change as rapidly as the source" locked volume meaning a pipe with a tee that is not flowing. If you teed both sides then you will see much better results as you will have a flow over the probe. Not sure if this is what you are doing. Link to comment Share on other sites More sharing options...
JohnA Posted December 20, 2005 Share Posted December 20, 2005 ...If you teed both sides then you will see much better results as you will have a flow over the probe. . Why would there be flow over the probe? To have flow we need a pressure difference across the ends of the pipe, and this one won't have much of that, will it? I guess it's worth trying, it can't be worse than the T Link to comment Share on other sites More sharing options...
Lucifer Posted December 20, 2005 Share Posted December 20, 2005 It would require a 1 way valve on the exit side. My Bad. Link to comment Share on other sites More sharing options...
hadyn Posted December 20, 2005 Author Share Posted December 20, 2005 Bloody hell, people didnt seem to have these problems figuring out where to fit them on their 200SXs Link to comment Share on other sites More sharing options...
JohnA Posted December 20, 2005 Share Posted December 20, 2005 Same principles, what makes you think that they were doing it right over there? Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 20, 2005 Share Posted December 20, 2005 Drill and tap the plenum and put it in there, if the probe is so fragile that you fear it may break off bin it, and buy a proper one, an engine eating a probe tip WILL suffer serious indigestion! Link to comment Share on other sites More sharing options...
JohnK Posted December 20, 2005 Share Posted December 20, 2005 I am still trying to work out the effect of air velocity on temprature. I had a probe just in front of the throttle butterfys, The temp dropped while moving (open throttle) but shot up while stationary. I have my doubts that the reading is correct as for a simple test I let the probe settle in still air outside the car then drove down the road with it out the window, this too measured a drop. So hadyn, even if you fit your sensor in the correct place you may just have another gauge with meaningless numbers displayed. Expensive gauges are normally expensive for a reason. Link to comment Share on other sites More sharing options...
hadyn Posted December 20, 2005 Author Share Posted December 20, 2005 Oh dear I thought one of these things would be very useful for measuring the effectiveness of your intercooler Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now