Vehicle & Technical > Defender
200 TDI TUNING TIPS PLEASE - Ian, Mike in particular !
Xtremeteam:
--- Quote from: "electricbluebadger" ---Downloaded this a long while ago and wont garantee anything... usual disclaimer :) but here goes...
"as the gods who run this site have deleted the main information from the arcive in the new website version I have re typed it ...at 2600 viewings it must be worth keeping!
First you need 16 psi boost on the inlet manifold. to get this you shorten the rod to the waste gate about 6mm its easy on a 200 but a pig on the 300. Loosen the lock nut first and dont loose the circlip! Manufacturers max is 20 psi so 16 is OK
Second remove the 4 screws from the power valve cover ( thats the squarish cover on top of the pump) and with the screws removed see how far the cover rises on the spring. Remove the cover and the diaphragm below...mark its positon if you like ..you lift the edges and pull upwards . Do not touch the accelerator whilst this part is out. Below the diaphragm you will see a knurled wheel .Rotate this down wards so that when the spring and diagphragm are re fitted you have about 2mm lift in the power valve cover plate as it sits on the spring ( on one I had to grind some off the bottom edge of the knurled ring ) Now examing the end of the rod fitted to the diaphragm...it has a cone shape on the bottom offset. re fit the diaphragm so that the deepest part of the cone is to the front of the pump. Re fit the top and off you go. I have done dozens of these and had no problems..dont fiddle with other screws as all you will get is smoke . This causes a fantastic improvement in autos ..they leave the line when you hit the pedal not 5 seconds later.....mot emmissions are not affected and some say fuel econemy is improved......
You need to do both the turbo pressue and the pump or you wont have the air to burn the extra fuel and you will get smoke....post below gives photos .."
May help...
Cheers Steve
--- End quote ---
mine goes fine running standard boost & dynos just nicely
tonycougar:
I think I saw an add on cheviot 4x4 website for replacement centre pipes at £47, quite reasonable I think
v8kenny:
--- Quote from: "tonycougar" ---I think I saw an add on cheviot 4x4 website for replacement centre pipes at £47, quite reasonable I think
--- End quote ---
Well spotted that man ! - thanks for that :wink:
Devon-Rover:
This forum seems to have a lot of info on tweeking the TDI.
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