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P80 Oil Cooler Hose Replacement Topic is solved

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
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Sveedy
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Re: P80 Oil Cooler Hose Replacement

Post by Sveedy »

A little side note regarding oil coolers -
I have had a few vehicles where the oil cooler ran through the radiator, like the early style Volvos. A mechanic told me that the design set-up was done to serve two purposes; cool the oil when hot, but also warm the oil up when cold. I guess kind of an equalizer of sorts.
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Chuck W
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Post by Chuck W »

Yeah.

You said you talked with do88. Their Heater Hoses for the RN P80s might be usable, but I don't remember the size of the hoses offhand. I want to say 5/8"/16mm.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6

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Chuck W
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Post by Chuck W »

Sveedy wrote: 31 Jan 2024, 09:47 A little side note regarding oil coolers -
I have had a few vehicles where the oil cooler ran through the radiator, like the early style Volvos. A mechanic told me that the design set-up was done to serve two purposes; cool the oil when hot, but also warm the oil up when cold. I guess kind of an equalizer of sorts.
The cooler (exchanger) on the pan does the same thing, just without the tedious hoses out front.
I did my pan swap as part of a manual swap and did away with ALL of those stupid hoses out at the radiator.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6

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Post by ericmci »

Chuck W wrote: 31 Jan 2024, 09:48 Yeah.

You said you talked with do88. Their Heater Hoses for the RN P80s might be usable, but I don't remember the size of the hoses offhand. I want to say 5/8"/16mm.
Oh- you might be on to something there!
Looks like maybe some trimming but I think that could work.

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Post by foggydogg »

Chuck W wrote: 31 Jan 2024, 05:09

The OP has an RN motored car. The oil cooler is on the pan, not in the radiator. This was one of the reasons I swapped pans on my '97.


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Post by jmartin919 »

This uses a Gates 18821 hose on his P1
'00 S70 GLT SE
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Post by Sveedy »

Chuck W wrote: 31 Jan 2024, 09:50
The cooler (exchanger) on the pan does the same thing, just without the tedious hoses out front.
I did my pan swap as part of a manual swap and did away with ALL of those stupid hoses out at the radiator.
[/quote]


I see. That makes a bit more sense.
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Post by Chuck W »

jmartin919 wrote: 31 Jan 2024, 10:53 This uses a Gates 18821 hose on his P1
That might work as a non-silicone substitute for the left hose on the cooler. The way it bends back out would be beneficial.

The P80 and P2 coolant pipes don't elbow out like the P1's evidently do, so saving some of that straightened leg would be good. I'd still personally rather have silicone hoses though.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6

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Post by ericmci »

DO88's latest response:

Hi Eric.

Thank you. Provided that the connection is indeed 14 mm, I suggest you buy one meter of this hose. Should be plenty enough to make a soft bend.
https://www.do88performance.com/en/arti ... -13mm.html


What do you think?

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Post by jmartin919 »

Seems like it would kink over time.
'00 S70 GLT SE
'82 MB 380SL
'11 MB E350 Sport
'84 Chevy C10
'93 850 GLT NA SOLD

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