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Old 01-16-2016, 06:03 PM   #1 (permalink)
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Old School Diesel thermal efficiency improvement?

Hello all,

My 1998 Peugeot 306 has a 1.9 litre XUD turbo diesel.

It has the intercooler on top of the engine, which is not ideal from a cooling point of view- it also means a fair whack of heat escapes via the bonnet.

Do I move the intercooler to the front and add insulation onto the bonnet?

Also the car has no undertray so I was considering putting foam insulation on the sump and block to improve warmup..

you can see what I mean in the pics below:

Intercooler setup

My bonnet after approx 10 mins and 1.5 mile running- seems to have melted a fair bit of snow!

This is the sump setup- just hanging out in the breeze:

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Old 01-16-2016, 09:44 PM   #2 (permalink)
It's all about Diesel
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Sure you should move the intercooler to the front and add an undertray, not just for heat retention but also to improve the underbody airflow. And you can add a layer of some thermal insulator to the external side of the oil pan and to the valve cover.

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