KKK Diesel Turbo
The following content originates from www.johns306.com, and is used with permission of the author John Blackmore.
Here's the pics I've been promising people for ages. It's the elusive KKK turbo fitted to a majority of 306 turbo diesels. The pictures here should help people who are trying to increase the fuel and boost settings to increase power, hopefully by looking here you'll see what you need to be looking for before you take the plunge.
First jack the car up on the front drivers side and secure on axle stands. I have found it's easiest and safest to put the stand as shown to the left.
From where the jack is in the previous picture, if you look in behind the wheel into the engine bay you will see this. Almost exactly in the middle of this picture is the waste-gate adjustment of the KKK turbo. You can see the bell shaped housing just above the steering rod.
If you now crawl under the car and lie with your head under the steering rod and your feet out the front of the car under the bumper and look up you will see this. You can see the bell housing tucked behind the black pipe hanging down. You can also just make out the nut you have to remove to adjust the waste-gate (and hence turbo boost pressure). The adjuster inside it turned using a 2.5mm allen key.
View from directly under the turbo unit looking up. For a clearance point of view this is probably the easiest place to put you arm up to do the adjustments.
View from the other end of the turbo, this is how you tell if you got a KKK or a garret. Note the KKK logo stamped on the side of the unit, dead centre in the picture. The waste-gate bell housing can be seen on the far right.
For more information about tuning the KKK turbo you can check out the Club-306 turbo-diesel tuning guide and the AutoSpeed article on Peugeot diesel boost and injection system.
Peugeot 306 diesel tuning is a simple and effective way of creating more power from your Peugeot 306 Dturbo. 306 Dturbo tuning is something you can do with a few simple tools but Peugeot 306 turbo-diesel models were fitted with two types of turbocharger so it is important to determine if your turbo is manufactured by Garrett or KKK. KKK pictures are shown here so you can identify your turbo. Peugeot diesel tuning is something you can do for free.
