3rd Gen General Discussion The place for non-technical discussion about 3rd Gen RX-7s or if there's no better place for your topic

Leaking oil cooler fittings

Thread Tools
 
Search this Thread
 
Old Apr 15, 2024 | 03:37 PM
  #1  
Blutz3's Avatar
Thread Starter
Full Member
Tenured Member: 5 Years
iTrader: (2)
 
Joined: Apr 2020
Posts: 122
Likes: 10
From: OH
Leaking oil cooler fittings

Hey all. I built my own oil cooler setup on my car. This was before the smart cooler came out.
I initially used all brand new vibrant fittings w vibant hose. Iv assembled hundred of fittings on hose throughtout the years. I have the adjustable wrenches, the cutters, aluminum plates for vice, use silicone grease on assembly, etc.
I know for a fact none of the threads are galled and they come apart and back on w ease. W all of this being said, the 2 fittings to fittings on top of the cooler and on the thermostat absolutely will not seal 100%. Its more of a "weep."
I swapped out one fitting w a summit one to test it to no avail. I even called vibrant and they recommended the 37° conical caps which didnt do anything, either. Im at a bit of a loss here, and really dont want to put xrp wiggins clamps on such a hilariously simple setup that shouldnt be leaking.
I love the smart cooler, but this setup works and is totally new. Plus, if vibrant fittings just inherently weep at high pressures like this I dont want to waste my time changing setups either.


Give me your .02 and let me know any thoughts.
Reply
Old Apr 15, 2024 | 04:07 PM
  #2  
billyboy's Avatar
Rotary Freak
Tenured Member: 20 Years
Liked
Loved
Community Favorite
 
Joined: Jun 2005
Posts: 1,673
Likes: 287
From: sydney
Unless the seat was mangled, or the manufacturing process was *****, I don't know why they'd be recommending a flare seal!

Are you sure it's leaking at that connection? Hard to make out, it looks like the adaptors are screwed straight into the cooler and thermostat, I'd be using crush washers under all four at least, more than likely dowtys though.
Reply
Old Apr 15, 2024 | 04:23 PM
  #3  
Blutz3's Avatar
Thread Starter
Full Member
Tenured Member: 5 Years
iTrader: (2)
 
Joined: Apr 2020
Posts: 122
Likes: 10
From: OH
Originally Posted by billyboy
Unless the seat was mangled, or the manufacturing process was *****, I don't know why they'd be recommending a flare seal!

Are you sure it's leaking at that connection? Hard to make out, it looks like the adaptors are screwed straight into the cooler and thermostat, I'd be using crush washers under all four at least, more than likely dowtys though.
Yep leaking at those connections. The 4 adapters use o rings and dont leak
Reply
Old Apr 15, 2024 | 08:28 PM
  #4  
cloud9's Avatar
The bomb is in the toy!1!
Tenured Member: 20 Years
Loved
Community Favorite
Top Answer: 1
iTrader: (6)
 
Joined: Oct 2003
Posts: 2,224
Likes: 290
From: Dallas Tx.
I experienced what I would also describe as a weeping during my oil cooler install. After observing my fittings leak initially, I put SECO7 37° conical seals in place at those fittings then ran the car back up to temperature and I experienced less of a leak but still a tiny bit. At that point I let the car fully cool and tightened the fittings just a little bit more, then brought the car up to temp again and no leaks since.
Reply
Old Apr 27, 2024 | 03:08 PM
  #5  
avensis's Avatar
Banned
 
Joined: Jan 2022
Posts: 10
Likes: 0
From: Alger
Hi, did you manage to resolve the problem ?
Reply
Old Apr 27, 2024 | 08:52 PM
  #6  
Blutz3's Avatar
Thread Starter
Full Member
Tenured Member: 5 Years
iTrader: (2)
 
Joined: Apr 2020
Posts: 122
Likes: 10
From: OH
Originally Posted by cloud9
I experienced what I would also describe as a weeping during my oil cooler install. After observing my fittings leak initially, I put SECO7 37° conical seals in place at those fittings then ran the car back up to temperature and I experienced less of a leak but still a tiny bit. At that point I let the car fully cool and tightened the fittings just a little bit more, then brought the car up to temp again and no leaks since.

I did this. No change.
Reply
Old Apr 27, 2024 | 08:52 PM
  #7  
Blutz3's Avatar
Thread Starter
Full Member
Tenured Member: 5 Years
iTrader: (2)
 
Joined: Apr 2020
Posts: 122
Likes: 10
From: OH
Originally Posted by Blutz3
I did this. No change.

Nope
Reply
Old Mar 27, 2025 | 12:11 AM
  #8  
rx7bri's Avatar
Junior Member
Tenured Member: 5 Years
 
Joined: Feb 2021
Posts: 18
Likes: 0
From: NJ
did you find a solution? i just recently switched my oil cooler fittings to vibrant and 3 out of 4 are leaking at the conical seal. did you end up switching to a different brand?
Reply
Old Mar 27, 2025 | 06:23 AM
  #9  
Blutz3's Avatar
Thread Starter
Full Member
Tenured Member: 5 Years
iTrader: (2)
 
Joined: Apr 2020
Posts: 122
Likes: 10
From: OH
Originally Posted by rx7bri
did you find a solution? i just recently switched my oil cooler fittings to vibrant and 3 out of 4 are leaking at the conical seal. did you end up switching to a different brand?
Yes, and i apologize for not updating the thread. I talked to a porsche race car mechanic who deals w an hoses every day. He told me they have to be installed 100% dry. I cleaned the hell out of the thread and the mating surfaces and they sealed right up.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
existanzrx7
3rd Generation Specific (1993-2002)
12
Sep 16, 2020 11:29 PM
RotaryRoadkill
1st Generation Specific (1979-1985)
38
Mar 15, 2019 11:49 AM
TTBullet
3rd Generation Specific (1993-2002)
2
Mar 1, 2005 10:50 PM
FB II
1st Generation Specific (1979-1985)
9
May 3, 2003 08:17 PM
bigtwan25
2nd Generation Specific (1986-1992)
9
Apr 2, 2003 09:57 PM




All times are GMT -5. The time now is 12:42 AM.