306oc - Peugeot 306 Owners Club & Forum

Had a thought on this so made the changes according but what are others thoughts on the following..

Ph1 front grill looks pretty restrictive to air flow but opeing out and shoving more air into the front surely requires more air to be escaping from the back of the engine bay to increase flow?

So what I have done is open out the cutouts in the front grill to get more high pressure air in and removed the rubber sealing strips at the back of the engine bay to let more air (hopefully warm) out.

The only flaw I can see is if the engine bay air pressure is lower than that at the base of the windscreen - which would cause air to enter the engine bay at the back and hinder flow from front to back?

Have more temp sensor in position so will report back in due course anyhow...

You need to put the rubber strip back in, all you need is a good radiator.

Typically when you are at speed air flowing through the engine bay goes out at the base of the windscreen so I wouldn't worry about that.

Bear in mind that you mostly want to maximise air flow to the radiator as it is water cooled.

You could also use a p.1 grille from a sports model, as yours looks like it barely has any holes in it.

Car designers know what they're doing

(14-07-2014, 12:28 PM)RetroPug Wrote: [ -> ]Typically when you are at speed air flowing through the engine bay goes out at the base of the windscreen so I wouldn't worry about that.

Bear in mind that you mostly want to maximise air flow to the radiator as it is water cooled.

You could also use a p.1 grille from a sports model, as yours looks like it barely has any holes in it.

That was my thought with the grill so I have cut back faces out to make the proper "louves" pic to follow...

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(14-07-2014, 12:39 PM)tigerstyle Wrote: [ -> ]Car designers know what they're doing

Yes they do, but also have a different goal from myself i.e. they are not trying to produce 150% of the stock bhp

[attachment=17641]
[attachment=17642] opened out grill & upturned cold air feed

the air flow is more restricted going in that it ever will be flowing out.. lots of spaces (under the car, out the windscreen, even out the sides of the bonnet..

focus on getting more air through/across the radiator,