[Fot] Was: Oil Cooler or Oil filter first? Now how to ID flowoutthe adapter?

Thu Dec 6 13:45:14 MST 2018

Once upon a time I got this nifty new fiberglass air dam for my Spitfire, mounted it and went racing. First time out my oil shot up to 250°! Yow! Found someone with a drill in the paddock and drilled a bunch of holes in the dam where it was blocking flow to the the oil cooler. Ahhhh, back to 180-200° or so. –Rocky

From: van.mulders.marcel at telenet.be 
Sent: Thursday, December 6, 2018 5:02 AM
To: Rocky Entriken 
Cc: fot 
Subject: Re: [Fot] Was: Oil Cooler or Oil filter first? Now how to ID flowoutthe adapter?

When starting road racing (circuit racing) I had an oil cooler in my car just like about everyone else. The oil T° was always low, less than 100°C/212°F. In 2010, to get my car nearer the minimum weight, I removed the oil cooler and I'm racing always without the cooler since then.
Can't say that the oil T°  is higher without the cooler, maybe a little bit, but still always lower than 100°C , even after 1 hour races. I'd like to have the oil T° a bit higher!  So I believe most Triumph TR 4 cyl  cars don't need an oil cooler at all, maybe the oil T° is remaining too low in sprint races. There are only 3 main bearings and 4 big end bearings to heat the oil by friction. Compared to a modern engine, the oil isn't heated up much by the distribition parts and in the cylinder head. About 80 bhp / litre is a lot for our old engines, but I think the modern oils have a rather easy life in it.
Marcel

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Van: "fot" <fot at autox.team.net>
Aan: "Bud Rolofson" <levilevi at comcast.net>, "Kas Kastner" <kaskastner at gmail.com>, "fot" <fot at autox.team.net>
Verzonden: Donderdag 6 december 2018 06:11:12
Onderwerp: Re: [Fot] Was: Oil Cooler or Oil filter first? Now how to ID flow        outthe adapter?

Bud--

On your oil pressure situation, here’s a couple fuzzy pix of the adjustable oil pressure relieve valve my brother Buck made  up many years ago on my Spitfire. He drilled out the end of the stock valve and threaded it to take a fully threaded bolt (no shoulder) on which there is a nut. The bolt itself is also drilled out to take the stem of the valve’s plunger and spring. Then, loosen the nut, with engine running turn the bolt until pressure is where you want it, tighten the nut against the end of the valve. I run about 80 psi at full throttle.

And here’s my oil line setup. Oil comes out the side hole in the adapter, to filter, into/out of cooler, through checkvalve, back to engine through center hole of the adapter. A Tee in the cooler lets me install the oil temp sensor – I want to know the temp at its hottest, not after it’s been cooled. Another tee at the engine adaptor feeds the Accusump. It’s been a trouble-free system. I got the Earl’s hoses with the screw ends because the Tees have to go in first and then there’s no room for the hose beside it to turn.  --Rocky Entriken

From: Bud Rolofson via Fot 
Sent: Wednesday, December 5, 2018 8:53 PM
To: Kas Kastner ; FOT 
Subject: [Fot] Was: Oil Cooler or Oil filter first? Now how to ID flow outthe adapter?

List, 

Thanks to all who responded about this. The consensus was to go to the oil filter first to catch as much debris as possible before it collects in the oil cooler. Everyone said with an exploded engine (like I experienced) replacing the oil cooler is a requirement.

So I did replace the oil cooler after blowing up the engine, but TWICE I’ve had them ($160 Earl’s oil coolers) blow out and leak all over the engine bay when doing a test and tune day at the track. I’m on my third oil cooler and trying to reduce the oil pressure that on my gage says 85-90 psi to see if that is what is causing the coolers to leak, although they are rated at 150 psi or more. I put an extra copper washer on the oil pressure relief valve but I’m not sure what is really causing two oil coolers to blow out. Bad luck? Coincidence? Bad parts?  I’m getting tired of oiling/cleaning my engine bay. I’ll find out if my washers help on the next track day cause it has happened after 4-5 laps the last two times when I was breaking in new rings. Unfortunately the next track day could be a couple more months.

So the next question I have is how to know which way the flow is out of the adapter on the engine. See pic below and please tell me if the oil is coming OUT of engine from the right or left fitting in the picture. There are absolutely no markings or clues to tell me.

Also do most of you measure oil temp on the oil coming out or going into the engine?

Thanks
Bud

  On Dec 3, 2018, at 8:39 AM, Kas Kastner <kaskastner at gmail.com> wrote:

  Go to the filter first so any junk in the oil does not contaminat the cooler which is almost impossible to lean completly. If you ever have any engine serious problem  and the oil goes to the cooler first you can count on having to replace it also.

  Never be beaten by equipment.

  On Sun, Dec 2, 2018 at 11:38 PM Bud Rolofson via Fot <fot at autox.team.net> wrote:

    Listerati,

    For those of you running a remote oil cooler and remote oil filter do you run the hose coming OUT of the engine into the cooler first or the filter first? Just wanted to see how and why (if there’s a reason) most run their lines.

    Thanks
    Bud
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