Thread: allisport double core?

G'day Don,
My '96 130 has the big Alisport rad and intercooler, and a VNT.......it gets along very well. You don't have to go VNT to significally increase performance, there are other turbo upgrades out there.

A couple of things I highly recommend fitting with any tweaking going on is an EGT gauge to keep an eye on exhaust temps and a boost guage. With these two you can 'play' with things and easily check that you haven't gone to far with the tweaking.

Cheers, Murray

For radiators, intercoolers and air conditioners to work you need plenty of air through them. Installing bigger ones will not necessarily give an improvement unless more cooling air can go through them. Am sure original ones work considerably better than with standard setup when stuff that obstructs wind flow is removed and respectable looking vents added to sides of guards at rear to allow more air out so more can come in front. Think I recall on this forum seeing complaints of lack of improvement with larger intercooler installed. Seems important firstly to get plenty of cooling air through whatever intercooler you have. With radiator just need enough so engine does not get hotter than proper operating temperature. Often partially blocked radiator is not a problem in cool conditions.




I have a 105 degree temperature sensitive switch on the cylinder head of my Defender 130 Tdi which the wire to the fuel solenoid on the injector pump goes through. Motor will stop before any overheating damage can occur. About 6 years ago when changing timing belt, removed (Australian) air conditioner condenser. Have not yet got around to putting in replacement one. However, it is smaller so to only go in front of radiator (NOT INTERCOOLER TOO!) has larger fins - less efficient when clean but less prone to blockage and be connected with hoses rather than metal pipes so it can be moved a bit to allow better and easier cleaning of both radiator and AC condenser. There was an auxiliary electric fan in front of condenser. Looked to me that it was a significant air obstructer in itself and would often need switching on because of this.
My viscous fan is stored behind the seat in extended truck cab in case required. Shroud has also been removed. To me on 300Tdi it looks an aerodynamic abomination regarding air flow through the standard intercooler. Most likely more air generally goes through it from just forward vehicle speed with no shroud and no fan.


In about 6 years think I have put fan on 4 times to cool motor down. Including after prolonged stationary idling on hot day, when original black radiator header tank split, as it seems they all eventually do and when front of radiator got covered with wild oat seeds in paddock. Only overheated once with heavy load on hot day. Had large wind catching things on both tray of vehicle and trailer. Have done some more modifications to improve air flow since so probably it would now cope with more severe conditions before fan would need installing. This is easy with no shroud in place. ( Just wish I had known spanners for Falcon viscous fans fitted before going to trouble of making my own out of spring leaves!)






I think that with diesel engines it is more likely to be possible to get away without a fan than when similar power is produced from a petrol motor. They are less efficient and more heat is dissipated out the exhaust and radiator. However it is worth noting about a Riley sports car my uncle had in the 1950's. It had one belt driving the water pump and generator and a separate one for the radiator fan. He drove it around Melbourne for 8 years with no fan belt. Sometimes close to overheating idling in traffic jams but also sometimes in heat waves was passing the likes of FJ Holdens, supposedly built for Australian conditions by side of road with bonnet up.

At the moment, I'm more wondering if Allisport is the best brand and the double core, the best option for my truck as it is equipped.
Don.