Oil Cooler Pipes

I am struggling with the oil cooler pipes for my 200tdi disco conversion as part of my rebuild after an engine fire (thread)
I previously had a discovery 200tdi conversion in my '89 110 and used the following oil cooler pipes:
NTC2928
NTC2927
These are the oil cooler pipes with the conical fitting that is a compression fit.



These are the fitting I have on my old engines oil filter and my all metal radiator so these are what I ordered as replacements to fit my new (to me) engine. The new engine has the later style o-ring oil cooler fitting on the oil filter.



No problem I though I will just swap the fittings over from my old oil filter. However this is not possible as the adapter is a different thread and will not screw into the oil filter housing. After a little research the old style cone fitting seems to be imperial and the new o-ring style fitting are metric.



I believe this leaves me with two options either get the radiator adapters for the o-ring style cooler lines or swap the complete oil filter housing over. Are there any other options?

I think my preference is to get the o-ring adapters for the radiator as I can then use the Steve Parker conversion pipes which have a far better routing paths than the ones I was using previously. I believe to go this route I need to get a pair of ESR1262 but suppliers are saying you now need to use NTC3858 is that correct?

Did you get this sorted with regards to adapters?

Anaconda said:

Did you get this sorted with regards to adapters?

Click to expand...

I did as mentioned on my other thread with you in the discovery section. I ended up needing new oil cooler pipes and new radiator adapters.

Here is the section discussing it on my rebuild thread: LINK

dag019 said:

I am struggling with the oil cooler pipes for my 200tdi disco conversion as part of my rebuild after an engine fire (thread)
I previously had a discovery 200tdi conversion in my '89 110 and used the following oil cooler pipes:
NTC2928
NTC2927
These are the oil cooler pipes with the conical fitting that is a compression fit.

View attachment 273513 View attachment 273514

These are the fitting I have on my old engines oil filter and my all metal radiator so these are what I ordered as replacements to fit my new (to me) engine. The new engine has the later style o-ring oil cooler fitting on the oil filter.

View attachment 273512

No problem I though I will just swap the fittings over from my old oil filter. However this is not possible as the adapter is a different thread and will not screw into the braided oil cooler hose. After a little research the old style cone fitting seems to be imperial and the new o-ring style fitting are metric.

View attachment 273515 View attachment 273516

I believe this leaves me with two options either get the radiator adapters for the o-ring style cooler lines or swap the complete oil filter housing over. Are there any other options?

I think my preference is to get the o-ring adapters for the radiator as I can then use the Steve Parker conversion pipes which have a far better routing paths than the ones I was using previously. I believe to go this route I need to get a pair of ESR1262 but suppliers are saying you now need to use NTC3858 is that correct?

Click to expand...

You're correct on the incompatibility. The older conical fittings (NTC2927/NTC2928) are imperial, while the newer o-ring type fittings are metric, so they won’t interchange. Swapping the old oil filter housing won’t work due to the different thread pitch. Using the o-ring style system and adapting the radiator is the best route, especially if you want to use the Steve Parker pipes with improved routing. You’re right that ESR1262 was originally used, but NTC3858 is now the correct updated part and will work with M22 o-ring fittings. Just make sure your radiator ports match and seal properly.