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Topic: Orifice Tube (Read 2564 times) previous topic - next topic

Orifice Tube

Anyone ever replaced one?  When I got my coug, it had a sized compressor.  I swapped it out for a known good used unit.  It would build pressure and then over pressure and click off (per my valves).  My suspicion is the old compressor screwed the pooch and shot crud all into the orifice tube, plugging it up. 

Autozone sells an orifice tube kit.  It appears to come with two compression fittings, a piece of tube, and a new Orifice tube.  I know the dang thing is located in the lower ac liquid line running along the passenger chassis leg.  Since I have the engine out, I feel this would be a good time to do it.

So, if you have used that kit.  Did it work or did it leak like all hell?  Can I get the whole liquid line from somewhere?

Found that rock auto has the assembly for about $30.  Should I try back flushing the orifice tube or is that a waste of time?

Thanks,
DZ

Orifice Tube

Reply #1 –
If you disconnect both ends of the line sometimes you can blow the  back out of the orifice tube with low pressure compressed air <50 psi or it can break the orifice tube.
Matt
1984 Thunderbird - 89 302 HO, GT40 heads w/ Trick Flow springs, E303 cam, Edelbrock Performer 289 intake and 600 cfm 4bbl, Mustang headers, Jegs o/r H pipe, Dynomax lers, Mustang AOD and shifter, Mustang 8.8 w/ 3.73s, 3G alternator, Mustang front and rear sway bars, KYB 87-88 Turbo Coupe shocks and struts, and 11" front brakes.

1988 Mustang GT - GT40 heads, Explorer intake, 70mm throttle body, 70mm MAF, Crane 1.7 rrs, E303 cam, Kirban Kwik shifter w/ Pro 5.0 deluxe handle, aluminum clutch quadrant and firewall adjuster, o/r h pipe, Dynomax lers, 3G alternator, aluminum radiator, and 3.27 gears.
 
1986 Cougar 5.0, 1989 Mark VII LSC 5 speed, 1980 Mercury Zephyr 4 door (sold)

Orifice Tube

Reply #2 –
Just replace the line. The amount of R134 loss will cost more than the line.
  Just  2 cents




SCT Tuned by Me(Greg@SpeedyDyno.com)

E.T. 10.28 @ 136.5 MPH 1/4 mile: List of Mods; 351 EFI, AFR heads,AOD,Rousch 13in frt brakes,11in rear brakes, AirRide Tech air ride system, Sub frame connetors,2400 RPM stall, 3.50,BBK shorties,T62PT Turbos  air to air intercooled, Home built kit.
Car weights 3705lbs without driver:burnout:

Orifice Tube

Reply #3 –
Oreilly's or autozone should have the whole liquid line with orfice tube.  I have installed one in my TC with no problems. also since you will have the system open you should replace your accumulator as it could be clogged up as well.
 

Orifice Tube

Reply #4 –
AZ didn't have it.  Advance has them on clearance.  I plan on picking one up tomorrow if they can get one.  I will get it from Rock Auto if Advance can't get one.

For now I will brag about my freshly painted engine bay.  Why does Ford poke all those holes in the shock towers?  There are way more holes than there are things to bolt to them.
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