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Author Topic: Oil Cooler Ideas  (Read 2667 times)

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JamesV6CDX

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Oil Cooler Ideas
« on: 06 December 2022, 13:43:28 »

I'll post about the project itself in a different thread - but, recently, I acquired a V6 Omega having bought it blind - and it needs an Oil Cooler (Brown goo in the coolant). Thankfully, it's been caught very early, so nothing is particularly gummed up - but, it has failed nonetheless.

So I am considering my options for replacement.

1) New oil cooler.

Cost of between £350 and £400. Ouch. Don't really want to - it's a project car afterall and I don't want to throw loads of money at it.

2) Used Oil cooler.

Chap on the Omega Facebook page sold me used cooler for a tenner, which looks clean and I've no reason to believe it's faulty, he seems trustworthy enough. But something doesn't sit right about fitting a used cooler.

3) External cooler

- Fit an external cooler behind the bumper and run oil pipes to it. Cost effective at under £100, but I share concerns others have that it may result in the oil becoming too cold, and lose efficiency / prolong warmup times, which is never great.


4) No cooler (bypass it)

Someone suggested this on the parts thread. I am not sure what I think of this personally, don't think I like the idea, but throwing it out to the floor as a possible option.

5) Possible brainwave, or terrible idea (You tell me)

I have a new radiator for this car in the shed (Eg, main coolant radiator). This radiator has got a built in oil - cooler which was primarily designed to be an ATF cooler for older models, however, I don't need to use it, because my Autobox has the later, external cooler.

So, could I essentially just route the engine oil through this cooler which is built into the radiator? The negative is it would need a longer pipe run, although, I wonder if I could come out from the front of the "V" and therefore not have to extend it for too long.

This also would keep SOME originality, in as much as, it's a water/oil based heat exchanger, so should function in a similar way to the factory cooler inside the engine and not cause overcooling.

It's also a nearly-FREE solution, which has much appeal, and is a "new" oil cooler, albeit located elsewhere.

I might be talking rubbish, but I'm interested in thoughts around this. I did worry it wouldn't be robust enough, but if it can take hot ATF, surely it would be OK with engine oil?

Thoughts Please :y
« Last Edit: 06 December 2022, 13:45:00 by JamesV6CDX »
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Marks DTM Calib

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Re: Oil Cooler Ideas
« Reply #1 on: 06 December 2022, 13:56:06 »

Fit the right part in the right place.

The engine oil system is likely to be higher pressue than the gearbox oil system, you will also gobble a fortune in pipes to get the oil to the other side of the engine bay to use the integrated gearbox cooler.

Genuine new part is 93176626 and sub £150 on the bay, so not that hard to get or silly expensive
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JamesV6CDX

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Re: Oil Cooler Ideas
« Reply #2 on: 06 December 2022, 14:06:41 »

I'd pay £150 all day long to keep it original!

Can you give me a link please, I can't find one at that price?

Best prices I can find is £180 for the radiator. I am OK with that, but, it's quite damaged looking at the photos. Maybe been dropped.

Seller assures me it's okay, though.

What are your thoughts? Here are the pics of the damage. Personally I'm not sure about fitting a damaged component, but if you're happy it will stay oil tight, it'll do the job........




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Marks DTM Calib

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Re: Oil Cooler Ideas
« Reply #3 on: 06 December 2022, 14:14:48 »

That wants pressure testing!

Drop this guy a message, have bought one from him recently for 145:

https://www.ebay.co.uk/str/saabtechpartseuropeltd
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JamesV6CDX

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Re: Oil Cooler Ideas
« Reply #4 on: 06 December 2022, 14:16:15 »

That wants pressure testing!

Drop this guy a message, have bought one from him recently for 145:

https://www.ebay.co.uk/str/saabtechpartseuropeltd

Yes I thought that, I'm not happy to fit it to be honest. I think I'd rather take a punt with the used, intact one I've been given!

Sadly that seller has none left, I tried him recently :y

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Marks DTM Calib

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Re: Oil Cooler Ideas
« Reply #6 on: 06 December 2022, 14:34:28 »

That wants pressure testing!

Drop this guy a message, have bought one from him recently for 145:

https://www.ebay.co.uk/str/saabtechpartseuropeltd

Yes I thought that, I'm not happy to fit it to be honest. I think I'd rather take a punt with the used, intact one I've been given!

Sadly that seller has none left, I tried him recently :y

Have you actually called him?
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JamesV6CDX

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Re: Oil Cooler Ideas
« Reply #7 on: 06 December 2022, 14:41:01 »

I sent an email - he replied straight away saying he can’t get any more
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Re: Oil Cooler Ideas
« Reply #8 on: 06 December 2022, 16:24:26 »

Awaiting a reply from the Cadillac dealer in Denver, (as I am there at the end of the week, and they're 30 minutes walk from my hotel), to get an accurate idea of cost/availability of these over there.
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Doctor Gollum

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Re: Oil Cooler Ideas
« Reply #9 on: 06 December 2022, 17:45:25 »

Awaiting a reply from the Cadillac dealer in Denver, (as I am there at the end of the week, and they're 30 minutes walk from my hotel), to get an accurate idea of cost/availability of these over there.
The number I gave in your wanted post is the latest, and last, part number.

Basically, they are Discontinued in the US as well unless you can find a GM dealer that happens to have one buried on a shelf.

Parts wholesalers may have any remaining stock, but it will be slim pickings.
GM parts direct are now listing it as discontinued. Should have bought it a month ago :-X
« Last Edit: 06 December 2022, 17:51:33 by Doctor Gollum »
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Re: Oil Cooler Ideas
« Reply #10 on: 06 December 2022, 17:47:39 »

Both of those used ones are potentially junk. Both look like they've been dug out with a prybar :o
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Migv6 le Frog Fan

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Re: Oil Cooler Ideas
« Reply #11 on: 06 December 2022, 17:51:30 »

Cant see the harm in just bypassing it tbh. Doesnt get that hot or cold in the UK. Might take a little longer to warm up the oil from cold, but cant see that being a major issue.
Cant see the oil getting too hot unless doing trackdays or towing a large burger van.
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Re: Oil Cooler Ideas
« Reply #12 on: 06 December 2022, 18:00:50 »

Cant see the harm in just bypassing it tbh. Doesnt get that hot or cold in the UK. Might take a little longer to warm up the oil from cold, but cant see that being a major issue.
Cant see the oil getting too hot unless doing trackdays or towing a large burger van.
40°C is quite hot, Albs  ;D
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Migv6 le Frog Fan

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Re: Oil Cooler Ideas
« Reply #13 on: 06 December 2022, 18:19:33 »

A couple of days a year though.  ;)
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Re: Oil Cooler Ideas
« Reply #14 on: 06 December 2022, 18:35:03 »

Same problem with the engine going in the Austin and not found on yet, did think about getting a pipe welded to the fittings cut from cooler shaped in a shallow U. Need some 15mm pipe for that and needs 2 90deg bends in it.
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JamesV6CDX

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Re: Oil Cooler Ideas
« Reply #15 on: 06 December 2022, 18:51:08 »

Both of those used ones are potentially junk. Both look like they've been dug out with a prybar :o

They are not even used. Just new but damaged.

Bit regardless, I agree. I think It would be a better idea to fit the known good used cooler than those damaged ones!
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Doctor Gollum

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Re: Oil Cooler Ideas
« Reply #16 on: 06 December 2022, 19:25:43 »

Same problem with the engine going in the Austin and not found on yet, did think about getting a pipe welded to the fittings cut from cooler shaped in a shallow U. Need some 15mm pipe for that and needs 2 90deg bends in it.
That's about the most viable compromise.
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JamesV6CDX

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Re: Oil Cooler Ideas
« Reply #17 on: 07 December 2022, 13:09:47 »

Had a look at the used cooler I obtained.

It's actually not too bad looking. Threads are all intact.

In the spirit of "right part, right place" yet not shelling out excess money for a new cooler, I am thinking - pressure test it, and if it's ok, fit and forget.

I presume I can just pressure test it in a bucket of water and an air-line? Could anyone advise of what pressure to test up to, and the best way of hooking up the air to it? Thanks a million  :y
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Doctor Gollum

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Re: Oil Cooler Ideas
« Reply #18 on: 07 December 2022, 13:18:04 »

Had a look at the used cooler I obtained.

It's actually not too bad looking. Threads are all intact.

In the spirit of "right part, right place" yet not shelling out excess money for a new cooler, I am thinking - pressure test it, and if it's ok, fit and forget.

I presume I can just pressure test it in a bucket of water and an air-line? Could anyone advise of what pressure to test up to, and the best way of hooking up the air to it? Thanks a million  :y
It seems that new ones are globally no longer available. You missed that boat, so good used or damaged stock is the only direct replacement option.

As for testing, do you have a coolant pressure test kit? 🤔
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Raeturbo

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Re: Oil Cooler Ideas
« Reply #19 on: 07 December 2022, 21:47:52 »

Replace it with one from a good running car…. Job done :y
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Re: Oil Cooler Ideas
« Reply #20 on: 07 December 2022, 21:59:26 »

Replace it with one from a good running car…. Job done :y

I know of one in deepest darkest South Wales which could be whipped out one dark night!  >:D
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Re: Oil Cooler Ideas
« Reply #21 on: 07 December 2022, 22:57:10 »

Now now Steven🤨✋😂
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