Well I double clamped a 3/8" hose onto my stock cut off and not flared 5/16" lines and it worked great for 5-6 years until the car was wrecked. On the new car, my cooler allowed me to select the fittings to use, so I ran 5/16" transmission cooler hose all the way. My new car also has the hoses double clamped onto the un-flared tubing.
On one cooler install, the cooler had 3/8" barbs and the truck transmission lines were 5/16" So I got one of those compression fittings for 5/16" tube and the other side was female NPT thread. I was able to put 3/8" cooler hose onto it then with a 3/8" barb/male NPT fitting.
You should just use transmission cooler hose for this application, imo. Also, I have heard in the past that you cant use the newer condensers for transmission coolers because they dont flow well enough, but supposedly the older fin & tube style condensers will work. I dont know if there is any truth to this, but a dirt track racer told me that, lol
Let me know if you have heard otherwise.
Last I checked, this car is 17 years old and the design dates back over 20...
I'll let you know what I figure out.
Unless I can find an appropriate Springlock -> 3/8" barb adapter for a viable price, I'm going to re-purpose the A/C lines and cut the ends off. this should (need to confirm) leave me with 1/2" metal pipe on which i can use a 1/2" compression fitting.
A quick trip to a hardware store yielded the following bits/options:
* Cut off A/C hoses to make female Springlock -> 1/2" metal pipe adapters
Buy (2) 1/2" Compression Nut (to 1/2" FPT) $3.98
Buy (2) 3/8" Barb to 1/2" MPT $11.18
Total for A/C condensor => new hose adapters $15.16
Buy 3/8" high temp hose x 5ft (however much I need) TBD
Cut existing ATF cooling lines to make engine -> 5/16" metal pipe
Buy (2) 5/16" compression Nuts (to 5/16" FPT) $3.58
Buy (2) 5/16" Flare (male) to 1/4" FPT $3.98
Buy (2) 3/8" Barb to 1/4" MPT adapter $6.58
Total cost for Engine => new hose adapters $14.14
Buy (1) 5/16"" pipe joiner. Essentially 2 comp nuts plus a male-male adapter.
- 5/16" compression nut to 1/4" MPT (confirm threading on the male-male adapter)
- 5/16"" compression nut to 1/4"" FPT (confirm threading on the male-male adapter)
$3.99 for set
Buy (1) 3/8" Barb to 1/4" MPT adapter $3.29
Buy (1) 3/8" Barb to 1/4" FPT adapter $3.29
Total for this Option $10.57
Scenario 1 Total $29.30
Scenario 2 Total $25.73
If I can buy the springlock -> barb adapter for less than $10, it'll be worth it (esp if one of you guys will buy my AC bits come summer).
Q: Any ideas on where I can take the A/C hoses for comparison?
I don't know if what an A/C specialty store would be called.