Supercharging the 9N Polo

[woter324]

Ok then guys. How do we do this one. Any kits out there? what are these things on eBay any good or as cheap as they look?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 76399&rd=1

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 76412&rd=1

One of them I checked out the site. The tacky appearance didn't do anything to boost my confidence:

http://www.kamann-autosport.com/Start2.htm

Some intersting kits for VW's generaly here:
http://www.nsracing.com/vw/turbo.htm


Anyone know a place that may be able to supercharge the 1.4 16V 9N Polo.

Many thanks[/url]

[Joy]

A Polo has got a high compression (10,5:1). Without adjustments to the engine to lower that compression I garantee you that the engine will blow.

A friend of mine had a Volkswagen Lupo 1.4 16V 75 HP. He added a turbocharger which boosted the poweroutput to 120 HP.

After 2500 miles the engine stopped working. A look under the bonnet revealed a huge crack in the lower part of the engine. It was just torn apart.

So, to make a turbocharger work you should lower compression first.

[woter324]

Thanks for info,

Do you know if the compression can be changed electronically, via ECU or in another funky way?

Thanks

[Joy]

The "supercharger" you are reffering to isn't the same as a conventional turbocharger of course.

The advert promises a lot. But I'm very suspicious. The price is even lower than a 57i kit from K&N.


10,5:1 is nearly the perfect compression to detonate fuel.

When adding a turbo the compression will rise to >15.

So you have to lower the mechanical (10,5:1) compression to make some room for the pressure delivered by the turbo.
This can be done by mounting a metal headgasket sealed by 2 normal headgaskets on both sides of the metal one.

The best way to lower that compression is to install new welded pistons with a smaller bore. But that's very expensive.

[dxg]

Thanks for info,

Do you know if the compression can be changed electronically, via ECU or in another funky way?

Thanks

I'm by no means an expert, but I understand that a thicker (or a couple of standard ones) head gasket is a bodge that will achieve this.

I've seen the calculations you do to work the CR's out and they scare me!

Deek.