Thread: Turning the fuel up on the isuzu..

oh, in that case...

when you get your new turbocharger, remove and mod the manifold so that its got the provision for an EGT thermocouple.

then

FIT An EGT GAUGE.

the max......

Originally Posted by Blknight.aus

oh, its a turbo...


FIT AN EGT GAUGE....


650 is the reccomended max temp....

The suzi can produce metal melting temps if it tweaked up and pushed too hard.

750 is the reccomended max in the Isuzu w/shop manual. Not that I would hold that for too long. 650 is quite common up hills with 35" tyres and the trailer.

Justin

depends on your turbo....

650 is the minimum maximum sustainable temperature that IVe found so I use that as a generic max pyro figure.

of course I could assume that your using a ceramic lined turbo with the gucci lightweight ceramic turbine wheel in which case you can run about 1400 deg C before you melt the turbo, IF you can stop the manifold from melting.

I've seen the 750 figure before for the suzi and I personally think its also fairly conservative for the -t varients and wouldnt mind betting that so long as you didnt mind the increased rebuild frequency and shortened oil life that you could push and sustain over 900 if you could keep the turbo together.

Originally Posted by DRanged

750 is the reccomended max in the Isuzu w/shop manual. Not that I would hold that for too long. 650 is quite common up hills with 35" tyres and the trailer.

Justin

As Dave said it does depend on the turbo, but the IHI was rated to 750C and the T25 used on later models at least that.

Personally I run 750 for short bursts (i.e. overtaking and short hills), longer slogs I back off to around 650C.
Seems to be working so far, I've been running those temps for about a year and a half with no (related) issues.

Gave in to curiosity over the weekend, turned the fuel & boost up. One turn for anticlockwise for the fuel and adjusted the boost to 15PSI, figuring the intercooler would allow possibly more, but without an EGT gauge, further fuel/boost would be risky.

What a difference!, the change is as much as going from an NA to a Turbo-charger!. With a heap of gear, two adults and a child, this thing just eats any hill, and continues to accelerate until I pike out, which scares the hell out of the missus. She actually worked up a nervous sweat while we drove around this arvo, I can't help myself. Late model Hiluxes look out, an empty twincab couldn't keep up on Sunday, and I'm only carrying around a rooftent & ladder, chainsaw, 150ltrs fuel, 20ltrs of H2O, slab of cold Gold in an Engel, a generator, heavy toolbox/spares and heaps of camping/fishing gear; let alone the weight of the vehicle & accessories!.

EGT gauge to be fitted this week, to make it easy it'll go in the exhaust, like most trucks. Interesting to see if there's much left temp-wise and what the economy is like with the little black plume showing on initial throttle.

Originally Posted by 1103.9TDI

One turn for anticlockwise for the fuel .............

EGT gauge to be fitted this week, to make it easy it'll go in the exhaust, like most trucks.

A full turn is a LOT of extra fuel, so until you get an EGT gauge I'd be taking it easy with the right foot..........don't want to burn holes in the top of the pistons do we

Also, it is highly recommended to fit the EGT gauge pre turbo.

Cheers, Murray

1/4 turn is a significant amount more fuel.

Originally Posted by rijidij

A full turn is a LOT of extra fuel, so until you get an EGT gauge I'd be taking it easy with the right foot..........don't want to burn holes in the top of the pistons do we

Also, it is highly recommended to fit the EGT gauge pre turbo.

Cheers, Murray

Mine is 2 and 3/4's

I cranked it out 5 just for fun, man the temps pick up quick, but fug does it hit the governor quick!