cooling a 2ltr Aircooled

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Pilks
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cooling a 2ltr Aircooled

Post by Pilks »

anyone got suggestions on the best way of further cooling the engine of my 2ltr Aircooled.

Am starting to consider changing the oil cooler for a bigger one. is there much gain in doing this,is it simply bolting on a bigger unit?

Or are there better ways of bringing the temp down.
:?
cheers
Dave

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steve8090
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Post by steve8090 »

Dave

Are you having cooling problems? if so then you really need to look at the current setup you have, tinware in good condition, thermostat working? if not then flaps in max cooling position? etc etc, you know what I'm saying.
As for extra oil cooling I've done this two ways, the original oil cooler is integral to he engine and cooling housing but you can either put a sandwich plate between the oil filter and the engine case that will run a twin take off to an external oil cooler or you can change the oil pump to a full flow pump such as the gene berg or bugpack pumps again an external cooler can be fixed, both have worked very well, the full flow pump was used in a couple of bugs for customers I built were the tinware was scapped and the sandwich plate used on a "hotted up" 2.1 overbored type 4 motor, if you are staying as standard then there really is no further need to add extra cooling unless one of the standard systems is not functioning properly.
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Anonymous

Post by Anonymous »

Why do you think that it needs extra cooling? Is it overheating?

Do you have a temperature guage on the engine so you can keep an eye on it? If not then I would suggest that this is the first thing I would spend money on before anything else.

If the engine IS overheating, try to look at why rather than just going around the problem. If the engine is in good condition (good compression etc) and you are asking more from it (driving it faster that it wants or a heavy right foot!?) then maybe a larger oil cooler would help... but this should only be looked into after you are sure everything else on and in the engine is in tip top condition including a good service.

MG

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Oil cooling

Post by Pilks »

Thanks for the feed-back gents.
I suppose the reason I am now asking this type of question is that I have now fitted a oil temp gauge. The van is running very well and no sign of overheating.

However when im averaging say 65mph the van is running at just under 130 degrees! and I just thought are there ways of reducing that temp without the need to say reduce my speed.

Ive been told that I shouldn't allow the van to get any hotter than 130??

Regards
Dave

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Post by HarryMann »

http://www.type2.com/library/heat/heat-soundproof.html

This should shed some light, it doesn't apply specifically to your T3, but it certainly covers the subject in depth.
Use the 3 links at the bottom that take you even further... the diagrams are useful, but the main thrust is 'complete and good close fitting tinware' but as Steve suggests, whilst being basic pre-requisites, these may not always be the easiest route to a solution.

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Anonymous

Post by Anonymous »

130oC is a little hot. I'd certainley advise against going any faster if your van is reaching that kind of temp!

Have a good look around at the tinwear, thermostat and flaps and make sure that its all working as per factory.

If yes, does the engine use much oil? a compression test gives a good insight into just how well your engine is, or rather not!

If need a hand over the phone or are not a million miles away, give me a call.

MG

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HarryMann
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Post by HarryMann »

Michael is right I think, 130 C getting about as much as you'd want to see on an oil temp gauge.

Compression Test is here in our Wiki:-

http://www.club80-90.co.uk/wiki/index.p ... 31d69c80cd

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badger
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Post by badger »

Are you sure it's 130 C and not 130 F?
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Post by camper »

steve8090 wrote:Dave

Are you having cooling problems? if so then you really need to look at the current setup you have, tinware in good condition, thermostat working? if not then flaps in max cooling position? etc etc, you know what I'm saying.
As for extra oil cooling I've done this two ways, the original oil cooler is integral to he engine and cooling housing but you can either put a sandwich plate between the oil filter and the engine case that will run a twin take off to an external oil cooler or you can change the oil pump to a full flow pump such as the gene berg or bugpack pumps again an external cooler can be fixed, both have worked very well, the full flow pump was used in a couple of bugs for customers I built were the tinware was scapped and the sandwich plate used on a "hotted up" 2.1 overbored type 4 motor, if you are staying as standard then there really is no further need to add extra cooling unless one of the standard systems is not functioning properly.
As i understand when the thermostat is closed the off side flap is closed and the nearside fully open.There is a pict in the haynes manual which shows this.Can you help me out a little please as i am replacing the flaps that was missing off mine.I would like to no what the flaps should look like when both are in the fully open position.I was thinking at how critical the postion of the flap should be for the air to be directed into the oil cooler.Thanks

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Flaps

Post by cumbriankeith »

Have a look at this page. There is a pic which may help.
In the details for adjusting the stat cable it says:
"When the flaps are closed the 1/2 side flap is facing down and blocking the cylinders and when open it is level. If you rock the shaft you will hear the flap hitting the tin indicating it's at the top." (BTW "1/2" doesn't mean "half" it means the right-hand pair of cyls! But everyone knew that straight away but me, right?)
Lots of other good stuff on the site for these TypeIV engines, too.
Keith
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Post by camper »

I have obtained some second hand replacement flaps with the control rod the factory settings are not there .The tinware that sits on the oil cooler has turned edges that give me the impression it might be a close fit to the oil cooler flap under certain conditions ie the cranking action of the control rod.I set the flaps to match up with the pict in the link you kindly provided Keith .There are diffrences in the half way hight on the oil cooler flap from closed to both flaps fully open .

camper
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Post by camper »

camper wrote:I have obtained some second hand replacement flaps with the control rod the factory settings are not there .The tinware that sits on the oil cooler has turned edges that give me the impression it might be a close fit to the oil cooler flap under certain conditions ie the cranking action of the control rod.I set the flaps to match up with the pict in the link you kindly provided Keith .There are diffrences in the half way hight on the oil cooler flap from closed to both flaps fully open .
Managed to get them to work i think correctly after fitting the fan housing back on the engine and its tinware.Thanks for the reply Keith.

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