Oil Cooler Hoses - 4.5 V8

[Shanksy87]

Afternoon all,

I'm looking to replace a leaking oil cooler hose, but like others in the past I've not found much information about how best to do this other than a trip down to the local Pirtek and hope they feel generous. I noticed in one past thread that www.hosemaker.co.uk supplied some very competitively priced items. I want to get together the correct information to go into the alternative parts list so that a cheap mail order part could be documented for all to work from.

As I understand it one of the hoses cannot be re-manufactured and must be repaired due to a unique hose termination, but the one running from the oil cooler to the remote oil filter housing could be made very easily and fortunately for me this is the one in question right now.

I believe all fitting are 5/8" BSP, and for this particular hose should be straight female unions, correct me where wrong? The hose I believe to be around 1-1.2m long, but will get an exact measurement when the old one is removed.

The main question is what type and size of hose should be used? Going by the hosemaker website even the cheapest should be massively overkill for this application. And what may sound like a stupid question, what size of hose to use, I assume 5/8" to match the unions?

If this is the case then its ~£26 delivered, £50 less than my local Pirtek man suggested.

[AnimalMother]

You could make your own using 5/8BSP push on fittings and 5/8 or -10AN/JIC stainless braided hose or rubber hose. But make sure the hose is designed for push on fittings as the hose that's for the normal AN/JIC fittings wont stretch enough to get a push on fitting in it.

Also some later cars (or all 4.5s?) have a slight different setup where one hose goes direct from the oil pump, I think that fitting is 1/2 BSP...so there must be a step up adapter in there somewhere too, anyone?

(old 4.2's have both oil hoses enter/exit the engine on the passenger side of the engine)

Edited by AnimalMother on Monday 8th December 15:49

[AnimalMother]

I know this because I had to make a new oil hose when fitting a 4.5 into a early 4.2 on my own car.

I used the following, which I found on the shelf where I work ( best to declare it my interest / place of work :-) ):


http://www.motorsport-tools.com/motamec-an-10-an10...

http://www.motorsport-tools.com/58-bsp-straight-fi...

http://www.motorsport-tools.com/58-bsp-90-degree-f...

(dont currently have the stainless steel braided to suite push on fittings unfortunately)


But as I said somewhere on later cars there must be a 1/2 BSP to 5/8 BSP adapter used?

Edited by AnimalMother on Monday 8th December 16:50

[ukkid35]

I used Pirtek, not cheap though

http://www.pistonheads.com/gassing/topic.asp?f=6&a...

[Supateg]

I used hose tails and jubilee clips with std oil pipe to connect the cooler to the stat.
All off eBay for under £30. Been fine the last two years.

[pmessling]

I've had some made up from a local hydraulics place. I think I paid about £150 for a complete set although I changed mine slightly as I fitted an oil stat.

[pmessling]

I've had some made up from a local hydraulics place. I think I paid about £150 for a complete set although I changed mine slightly as I fitted an oil stat.

[Shanksy87]

Thanks for the information guys. Could anyone confirm beyond doubt that the oil cooler and remote oil filter housing are both 5/8" fittings?

[Supateg]

I can confirm the oil cooler is 5/8 bsp.

N.b unless the union has been off within the last year; it will be seized solid.
Aluminium and zinc coated fittings are a recipe for disaster.

(Best to have oil cooler off and clamped)

To save my perfect oil cooler I had to saw the union diagonally to split the nut. This allowed me to undo it. A quick wire brush up and the new 5/8 tails screwed on no problem.
Hth

[pmessling]

I had no trouble getting the hoses off the cooler they been on there 10 years now. Perhaps I was just lucky.

[Supateg]

Perhaps I was unlucky

I always plan for the worse case.