What Fuel temps are you folks seeing?

 

I want to use 1/4 inch air line left over from putting in air bags.  Going to install  a test port off a Airdog DF-100.  Tubing also known as "Air brake" line.  Which is nylon I believe.  Best I can see online nylon tubing starts to fall apart around 200 degrees?   I have 190 or 195 thermostat.  Tubing is stamped SAE j844.  Well with in psi but not sure about temps. 

Any body know what fuel temps we are dealing with?

 

 

 

 

 

Should be anything even close to 200* for monitoring at the lift pump.  Highest I've seen was 162* and that was from the VP's internal temp sensor.

Edited January 19, 20187 yr by trreed

Thanks

I always like "safety" margin built in.

I've used air brake line for quite awhile and rare for me to get over 140*F fuel temp. 

 

I have autometer gauges.  (I like type of gauges you have with blinking light as alarm but already bought auto meter gauge when I started project).  I only have one sender for pressure gauge.  I'm also coming up with air line to be used as test port.  Subber to needle valve to "T" then air line to sender and other air line as test port.  Booth air lines connected with ferrile compression fittings.

 

In the pic, you have two senders for fuel pressure?  Or is second sender for another gauge?  And title of article is plural.  If running 2 FP gauges could you explain where 2nd is reading pressure from?  

 

 

  

Boost and fuel pressure. The reason also is if i have to test either gauge I can hook a tee and second gauge for testing. Much easier than digging at the VP44 or the back of the head. Right there easy access.

What temp does the stock fuel filter heater turn on and off? 

IiRC 60*F. Non computer controlled.

So just an on/off above/below type thing?

Thermostatic heater all embedded in the filter housing.

Be a nice one to have a heat exchanger blow heat off the exhaust over to near the lift pump that you can pull a cable and shut it off for summer. I'm always thinking outside the oil drum.

Ummm not be Mr obvious here but even dot grade airline won't handle fuel for long

9 hours ago, JAG1 said:

Be a nice one to have a heat exchanger blow heat off the exhaust over to near the lift pump that you can pull a cable and shut it off for summer. I'm always thinking outside the oil drum.

I've been thinking bout heat tape but DC type

I did not know there is a DC current type. Sounds good.

1 hour ago, outlaw7 said:

Ummm not be Mr obvious here but even dot grade airline won't handle fuel for long

 

My old DiPricol gauges went 10 years. Now I'm on my ISSPro EV2 gauges I think 3 years now. 

I didn't think air line would work ether when I seen people use it, but after some research I did it myself 1/8" and as long as it's away from anything that can melt it it works great, I even used quick push in connectors, one screwed right on the back side of the gauge and the other in my brass T (one male one female). I ran it inside a 1/2" fuel line from under the hood to the gauge and it slipped perfectly over the quick connect fitting on the guage, so if plastic line ever breaks it will leak outside the firewall, plus I'm using niddle valve that is just cracked open so even if it did Leak it would be a very small drip.

Methanol is used in big truck air brake systems and doesn’t seem to limit life expectancy of air lines 

Believe it or not when I was a pre newbie on here, a so called mechanic used some PVC pipe in my fuel system.  I questioned him about it.  He pulled up a chart of diesel compatibility.  Also listed is nylon.  Both had a rating of "A".  I had some air brake hose left over from air bag job, so thought I would use it.  I also have a fuel module that has lots of plastic in it.  I did find out the plastic that draw straws are Teflon.  My fuel tank is a form of plastic.  

But I'd be more concerned if I had to use b100 as a fuel in my rubber fuel line.  

Edited January 23, 20187 yr by 015point9

3 hours ago, Royal Squire said:

Methanol is used in big truck air brake systems and doesn’t seem to limit life expectancy of air lines 

 

I'm curious what for?  Ice melter/prevent ice ?

methanol keeps air lines brake chambers etc from icing over in cold temps believe me from experience it aint no fun to have a trailor or your whole rig freeze up due to ice because your preety well screwed unless you have more brakeline antifreeze or a warm shop or a shitload of patience. ive actually thawed a 30 ft dump wagon out once by preesureing up and then fanning down the brakes to the low psi warning and rebuilding psi in the tanks. it takes a while but the fresh hot compressed air from the compressor head slowly warms the system up finally

my thing about your nylon airline is a... it came from an air bag kit, which ive used the same stuffits pretty cheap most of the time and b you don't really know the composition of it most of the time on the small bag kits especially

 

and as for the dc type heat tape ....there aint no such bird........yet hmmmmmm I smell another project in the air gotta finish one before the other but how cool what that be... the other idea ive had which ive mixed feelings on is encasing the fuel line into essentially an airduct say 1 1/2" pipe thin wall and hooking to its own lil heater, problem is great in winter and temp spikes the rest of the time  and who really wants to install and uninstall that every year....not me so the tape thing sounds more logical and really I wonder if of the shelf stuff like smaller lengths with less wattage might not be convertible to 12vdc or maybe a stepper power supply up to like 48 from 12vdc its real simple to do that idk have to play with it some time

The markings on hoses are handy.  Most NAPA stores use Weatherhead which is a Eaton brand (according to my local store)  while I can't look up the dot number specs, usually I can find something online that gives a clue to the pressure or temps hose will hold up to.  In this case I didn't know what fuel temps I was playing with.  

 

 (At work we used airline anti freeze when cold.)