DIY R134a Conversion - 83 928S
#19
#20
Rennlist Member
Just that the title said conversion of the system. The condenser is a part that might bear upgrading. If all's good, then no problem, but running R134 sometimes needs a little help.
Good luck,
Dave
Good luck,
Dave
#22
Rennlist Member
Thread Starter
Title says "DIY R134a Conversion" so if I don't need to do it to run R134a then I'm not spending they money. The car ran R134a all of last summer and was very cold so the condenser efficiency for Charlotte, NC is not an issue.
#23
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Thread Starter
The R134a project took a little detour as the brakes needed some attention. The brake reservoir had dropped fluid level triggering the brake warning so upon inspection I see the DS front brake line is leaking. Since I have some new friends at the hydraulic shop I had them make me some new ones. I could have done them in standard rubber for ~$20/line, but I chose the black coated stainless steel lines with fancy colored ends. $115 later and I had 4 new brake lines and a chance to test out the new PowerBleeder by Motive. I ended up taking off the plastic spiral protector from the old hose and winding it onto the new one.
I should have the new barrier hoses installed tomorrow and hopefully the manifold gauge set I ordered will arrive as well. I plan to pressurize the system to 250psi using one of my welding bottles to test for leaks. I also need to take a trip to Harbor Freight to pick up a new vacuum pump.
I should have the new barrier hoses installed tomorrow and hopefully the manifold gauge set I ordered will arrive as well. I plan to pressurize the system to 250psi using one of my welding bottles to test for leaks. I also need to take a trip to Harbor Freight to pick up a new vacuum pump.
#24
Rennlist Member
#27
Rennlist Member
Good luck,
Dave
#28
Rennlist Member
Thread Starter
Conversion as in, what needs to be changed to run R134a. My local mechanic charged the system last year by adding R134a to my R12 system. Compressor leaked out all the freon from the manifold o-ring so I am converting the necessary parts to run R134a.
#29
Rennlist Member
#30
Rennlist Member
Thread Starter
Everything is installed and ready to go so I hope to recharge the system no later than tomorrow. Finally received all the gear today to charge this myself.
Purchased the single stage pump from Harbor Freight and also purchased the 2-year warranty. Don't forget to use your 20% off Coupon! $119 out the door.
I took the advice from the reviews and purchased a good quality vacuum oil. $11.25
I also purchased a set of gauges from Amazon that got favorable reviews....$27! Make sure you purchase the adapter that converts the yellow line to the spout on the R134a tap.
$26.99 -
Final step to test the pump for performance. As best I tell, with just about 15 seconds of pump time it sits at ~28 InHg.
Purchased the single stage pump from Harbor Freight and also purchased the 2-year warranty. Don't forget to use your 20% off Coupon! $119 out the door.
I took the advice from the reviews and purchased a good quality vacuum oil. $11.25
I also purchased a set of gauges from Amazon that got favorable reviews....$27! Make sure you purchase the adapter that converts the yellow line to the spout on the R134a tap.
$26.99 -
Orion Motor Tech 5FT AC Diagnostic Manifold Freon Gauge Set for R134A R12, R22, R502 Refrigerants, with Couplers and ACME Adapter
$7.21 -
Final step to test the pump for performance. As best I tell, with just about 15 seconds of pump time it sits at ~28 InHg.