OldMav technical information thread!

[OldMav]

Paul I brought a Nissan patrol coil cab/chassis March 1990 I had ordered it 3 months earlier, back then it was impossible to buy one off the floor But when I was picking it up a youngish pretty married property owner had come into the office very upset as her husband had given her a hard time about the new Maverick cab chassis she had ordered and pickup the afternoon before. He had told her to buy a Maverick him thinking Mavs came with coil springs lol. She was crying somewhat when my uncle who owned a nissan/Ford dealership told her you cannot buy a Nissan coil CAB/ chassis without at least a 3 month wait. Mmm she had that country pretty look and I gave in and told my Uncle to swap our rigs. So I ended up with quite a few thousand dollars extra in my pocket as she brought her Maverick primary producers discounted Tax etc in those days + a bonus of 3 years Rego free lol. So I was very happy even though I had leaf springs which didn't bother me as I had some serious mods I could trial to see if it worked on leafs. I never drove my rig N/A it was pushed into the workshop and I removed the engine for a full blue print and balance. silly eh. + a turbo and, and, etc, etc.

I am still in rebuild mods and haven't done any tuning with the new turbo GTX3071. But the KKK it replaced was always fuelled for 180rwkw about 141cc/1000 shots. I have had it at 200rwkw or a bit more but having done torsional vibration analysis back in the 90's it suggested 180 should be a safe tune before crank issues become apparent. I have always had torque in the low 700nm 690Nm area and boost at the 28 psi mark all in buy 2100 rpm. I tuned this thing to do odd accelerations but I can tell you a HSV dunnydoor looks pretty silly compared to this rig in 4 gear 80 to 120 klms or for that matter most sports cars. We will see how it goes with the new turbo. All this is about torque response not outright KW's. so the new turbo will be set up with the same sort of tune I hope.

Fuel economy well I never really think about that as it is what it is. But remember this thing has a 12mm element so lots of fuel can be pumped if required. If my Dad drives he will consistently get 26MPG or 10.8 litres per 100 but I have never got those figures ever. I usually see 20MPG or 14's litres/100 but I have actually got 12.5 once at night and empty on the very odd time I actually drove on bitumen highway. Water injection set at 11psi and cruising at 110+klms with 10 psi and that + is a big plus.