Thread: Our Defender/County 120?

Finally Boost and phyro is fitted up and working.

I put them on the top right as out of harms way of some of the employees we get here.



Sees 515 deg on a long hill under full noise (post turbo)and making almost 10 psi boost.


Not sure if I should push it any further fuel or boost wise with out a fridge on it..

Cheers Tony

Add intercooler, add boost, add fuel accordingly

Originally Posted by rovercare

Add intercooler, add boost, add fuel accordingly

I'm looking at http://www.dencodiesel.com/pdf/broch...20Brochure.pdf but would have to go inplace of the air filter Be comes a can of worms I seem to think.

I want to put aircon in this one so a big fridge infront of my rad won't be so good.

Originally Posted by rovercare

Add intercooler, add boost, add fuel accordingly

How much of each is the question, what figures do you consider to be maximum boost and EGT Matt?, if you expect the Isuzu to survive a reasonable amount of kays.

Originally Posted by Rangier Rover

Sees 515 deg on a long hill under full noise (post turbo)and making almost 10 psi boost.


Not sure if I should push it any further fuel or boost wise with out a fridge on it..

Cheers Tony

You can get either a green sleeve to go over the backlight bulb in that boost guage or a green LED. I went green LED in mine and fitted resistors to dim them back to the factory gauge brightness. Wired in through the dimmer switch too.

Shift the probe to pre-turbo if you can.

Would you beleive they are both VDO. The pyro came with red and green sleeves, the boost didnt I also thought the compensating loom on thermo probe was poorly made Not soldered and poorly crimped.


Re putting the probe pre turbo. I'm not sure I should drill and tap the manifold with turbo still fitted for obvious reasons. I don't have time to pull it off ATM.

I see some one here did it with the engine running etc.

Cheers Tony

Originally Posted by Rangier Rover

Would you beleive they are both VDO. The pyro came with red and green sleeves, the boost didnt I also thought the compensating loom on thermo probe was poorly made Not soldered and poorly crimped.


Re putting the probe pre turbo. I'm not sure I should drill and tap the manifold with turbo still fitted for obvious reasons. I don't have time to pull it off ATM.

I see some one here did it with the engine running etc.

Cheers Tony

Yes I've got the same gauges, went to a green LED for the same reason (no green sleeve) and had the compensating loom attachment break it's wires. I now use mini K type connectors.

Originally Posted by 1103.9TDI

How much of each is the question, what figures do you consider to be maximum boost and EGT Matt?, if you expect the Isuzu to survive a reasonable amount of kays.

I'm hoping for 30 to 40 psi boost from compound turbo's.

Intercooler is custom air to water unit with 8 Laminova cores.

Still looking for a bigger IP with boost compensator.