Oil cooler chat
![Post Post](./styles/AeroBlue/imageset/icon_post_target.gif)
Below is a an e-mail dicussion between Mark and myself...
I thought an oil cooler followed a simple princliple of cooling the oil as cooler oil makes more sense!! As per usual Marky Mark spends the rest of the day trying to explain these things to me!!
I thought it worth posting for discussion and also for other people who might know as little as me!!
Please read from the bottom!
-----Original Message-----
From: Mark Reynolds
Sent: 25 July 2007 15:05
To: Hughes, Stuart
Subject: RE: Oil cooler
Speaking to our oil bods at work, modern decent synthetics should be
fine at up to 150 degrees!
We do one engine that instead of having water cooling it is oil cooled.
It uses a radiator that the oil is pumped through and the same oil is
used as engine oil. Apparently normal running of this engine is in the
130-140 degree region, and they regularly get to 150.
On track I go to about 120 before I back off. My old engine let go at
about 125 but the P1 bearings are made of chocolate anyway! Lets wait
and see. I have to say that oil coolers are a bit 'funny' and I have
heard of so many bad stories about cars with them fitted (3 Bar oil
press under load, loads of air you can't get out of the pipework etc.)
that I would want to leave fitment to someone with a lot more
experience. That would be Zen performance probably. RCM are non -
believers in oil coolers by the way.
Note that with 15/50 oil in you will probably see higher temps than you
will with 5 or 10/40 with all other things being equal.
Oil and associated bits are one of them subjects that it's difficult to
get a handle on unless you understand the chemistry, specs, and EXACTLY
what is required from an oil etc. I don't, and I suspect a lot of people
don't either.
-----Original Message-----
From: Hughes, Stuart
Sent: 25 July 2007 14:10
To: Mark Reynolds
Subject: RE: Oil cooler
I regularly see temps of 110 when having a spirited road drive! To be
honest this really bugs me as you have to back off when the fun is just
starting.
Ooooo oil coolers aren't as simple as they sound!! I love to regularly
feel REALLY thick!
-----Original Message-----
From: Mark Reynolds
Sent: 25 July 2007 12:58
To: Hughes, Stuart
Subject: RE: Oil cooler
They are not pointless, but unless you suffer with high temps on the
road or do a lot of track work then I personally would not bother.
You re going to be creating similar heat to mine. I get 110 max on the
road so no problem, but I keep an eye on it if I am on track.
Lets do the conversion then see whats happening but I doubt you will
need it. There are lots of bad things about coolers as I state below.
Also listen to Ren who has been there and done it.
http://p1woc.co.uk/postnuke/index.php?n ... opic&t=177
56&highlight=oil+cooler
A Baffled sump is not required. This has no effect on heat. Yes you can
get big ones that carry more oil but they are mainly for track work or
really quick accelerating cars. The baffles stop the oil sloshing into
areas away from the pick up. If this happens you can get split seconds
where you suck air into the pump instead of oil.
-----Original Message-----
From: Hughes, Stuart
Sent: 25 July 2007 12:15
To: Mark Reynolds
Subject: Oil cooler
Hi ya matey... long time no hear...
Oil cooler - why did we not discuss these? Are they pointless at the
current power gain target?
Similarly, I remembered considering a baffled oil sump to allow better
cooling and more oil? Is this over kill too?
Your thoughts... probably something like "shut it fat boy"!
I thought an oil cooler followed a simple princliple of cooling the oil as cooler oil makes more sense!! As per usual Marky Mark spends the rest of the day trying to explain these things to me!!
I thought it worth posting for discussion and also for other people who might know as little as me!!
Please read from the bottom!
-----Original Message-----
From: Mark Reynolds
Sent: 25 July 2007 15:05
To: Hughes, Stuart
Subject: RE: Oil cooler
Speaking to our oil bods at work, modern decent synthetics should be
fine at up to 150 degrees!
We do one engine that instead of having water cooling it is oil cooled.
It uses a radiator that the oil is pumped through and the same oil is
used as engine oil. Apparently normal running of this engine is in the
130-140 degree region, and they regularly get to 150.
On track I go to about 120 before I back off. My old engine let go at
about 125 but the P1 bearings are made of chocolate anyway! Lets wait
and see. I have to say that oil coolers are a bit 'funny' and I have
heard of so many bad stories about cars with them fitted (3 Bar oil
press under load, loads of air you can't get out of the pipework etc.)
that I would want to leave fitment to someone with a lot more
experience. That would be Zen performance probably. RCM are non -
believers in oil coolers by the way.
Note that with 15/50 oil in you will probably see higher temps than you
will with 5 or 10/40 with all other things being equal.
Oil and associated bits are one of them subjects that it's difficult to
get a handle on unless you understand the chemistry, specs, and EXACTLY
what is required from an oil etc. I don't, and I suspect a lot of people
don't either.
-----Original Message-----
From: Hughes, Stuart
Sent: 25 July 2007 14:10
To: Mark Reynolds
Subject: RE: Oil cooler
I regularly see temps of 110 when having a spirited road drive! To be
honest this really bugs me as you have to back off when the fun is just
starting.
Ooooo oil coolers aren't as simple as they sound!! I love to regularly
feel REALLY thick!
-----Original Message-----
From: Mark Reynolds
Sent: 25 July 2007 12:58
To: Hughes, Stuart
Subject: RE: Oil cooler
They are not pointless, but unless you suffer with high temps on the
road or do a lot of track work then I personally would not bother.
You re going to be creating similar heat to mine. I get 110 max on the
road so no problem, but I keep an eye on it if I am on track.
Lets do the conversion then see whats happening but I doubt you will
need it. There are lots of bad things about coolers as I state below.
Also listen to Ren who has been there and done it.
http://p1woc.co.uk/postnuke/index.php?n ... opic&t=177
56&highlight=oil+cooler
A Baffled sump is not required. This has no effect on heat. Yes you can
get big ones that carry more oil but they are mainly for track work or
really quick accelerating cars. The baffles stop the oil sloshing into
areas away from the pick up. If this happens you can get split seconds
where you suck air into the pump instead of oil.
-----Original Message-----
From: Hughes, Stuart
Sent: 25 July 2007 12:15
To: Mark Reynolds
Subject: Oil cooler
Hi ya matey... long time no hear...
Oil cooler - why did we not discuss these? Are they pointless at the
current power gain target?
Similarly, I remembered considering a baffled oil sump to allow better
cooling and more oil? Is this over kill too?
Your thoughts... probably something like "shut it fat boy"!