Omitting stock oil cooler from doghouse shroud

[Nando_b63]

So I heard back in 2003/2004 about some people were omitting the doghouse oil cooler on big engines up to 2275cc , but never saw compression numbers.

They block off the cooler on the case , ran lines to remote oil cooler and thermostatically switched fan under the car on left of trans.
They would prop the bottom of the deck lid , Accor to them no heating issues.
I now see this in 2021 still and they still utilizing this method.

So does it really work on big engines with 8:0:1 to 10:0:5 compression,
Driven on street?

Thanks in advance

[Glenn]

Bad idea.

I have a 2180 and it runs as cool as stock with just the stock oil cooler.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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[txoval]

Works fine with mine…

2100cc, 9.8:1

[UK Luke 72]

So many variables.

There's no real reason to defeat the very nicely engineered stock cooler although adding an aux cooler is nice insurance.

Thats what I have done with my 2276 street car at 11:1
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[nextgen]

In my manual I told customers of my Type 4 Conversion manual to use the larger T-4 Oil cooler.

I drive a 2.0 914 in my bug and personally found out the stock T-1 cooler was enough to cool my engine.

A point some guys miss if you have an engine that is putting out more HP, the engine will hardly be working to to push the car.

Less work, less heat.

Sure if you go High Compression etc. you just jumped into the unknown.
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[Ohio Tom]

I run a remote cooler "only'' on both of my street cars.

No issues at all. Regulates oil at 195F no matter what.
I saw the oil temp hit 205F once after a long highway trip on a 90F+ day.

So I run a late model fan (wider) in an early shroud.

[Nando_b63]

[94touring]

I run remote only on a 2110 bus but only because I kept getting leaks off the oil adapter and got sick of dropping the motor. End result is I still run 180-200 everywhere I go. No fan on the cooler, just a scoop to direct air over it.

[txoval]

My numbers are similar to Tom’s. My fan comes on at 190F and my oil never gets above 195F. I live in Texas and it gets plenty hot.

Setrab oil cooler and fan

[UK Luke 72]

[Wreck]

So far every one as just mentioned oil temps , what about the more important CHT difference ? Has anyone done a back to back change and noted the difference or difference in CHT's , particularly on a hot day over 30C , 90F ambients ?

[Nando_b63]

[94touring]

[Wreck]

[FreeBug]

My first thought : why? There's delicate balances going on inside those shrouds, figured out by engineers who knew what they were doing.

Then I read :

[txoval]

Yes,

[txoval]

I have been running the Setrab for two years, before that I had a 6 pass cooler.

The Setrab is much more efficient and a better cooler by far. It is tiny too, 6”x6”

It is an inline electronic thermostat, no a bypass…oil gets to 190F and the fan kicks on. Thermostat is on the outlet side of the cooler

[Nando_b63]

[pupjoint]

[txoval]

Stock spring and piston…

My stock cooler block off allows flow thru it…the ports aren’t plugged, so the oil system doesn’t know the cooler isn’t installed

Just as a warning, the Setrab setup is not cheap

https://www.thesamba.com/vw/classifieds/detail.php?id=2278097