Thread: c.h.i.e.f 's 110 Isuzu county

Are you intercooled Cheif?

Originally Posted by Dougal

Are you intercooled Cheif?

Yes air to air front mount but im considering other options all the time...

One other question c.h.i.e.f

When you had your injection pump on a test bench for adjustment, how many cc's per 1000 strokes did you achieve/set it to?

This figure will determine how much air you needed and a reasonable ballpark for what power you might obtain.

If you had an 89 or later 4BD1T (stronger pistons with better oil cooling) instead of what you are playing with, I would suggest adjusting the rpm to 4000 or more for 25+% power increase (power ~ torque x revs).

I'll try and find the figures ASAP ... I wish I had a factory turbo motor so I could open it up a bit more but trying to find one or even a whole truck is near impossible at least everywhere I have tryed once this motor has a problem depending on what the problem is I will probably be putting a cummins 6bt motor in it if I can find one with a inline IP and not the rotary ..

Have not found the paper I printed off with the fuel/delivery settings (still looking though) I'm trying to convince my mate to spare some time and give it a test again he couldn't remember now what he set it at either but he said he thinks it was 25% extra fuel at standard fuel screw position but I said I need the cc's per 1000 shots reading so still waiting on some usefull info guys ...

Originally Posted by c.h.i.e.f

Have not found the paper I printed off with the fuel/delivery settings (still looking though) I'm trying to convince my mate to spare some time and give it a test again he couldn't remember now what he set it at either but he said he thinks it was 25% extra fuel at standard fuel screw position but I said I need the cc's per 1000 shots reading so still waiting on some usefull info guys ...

From my info for the 86 to 88 4BD1 the stock calibration for fuel delivery ranges from 67 to 74 cc/1000 strokes at full load - this range takes in allowable variation as well as an rpm range.

Plus 25% would give 84 to 92 cc/1000 str.

For the same years 4BD1T the range is 70 to 78 cc/1000 str - this is approx 5% greater than for the 4BD1.

Originally Posted by Bush65

From my info for the 86 to 88 4BD1 the stock calibration for fuel delivery ranges from 67 to 74 cc/1000 strokes at full load - this range takes in allowable variation as well as an rpm range.

Plus 25% would give 84 to 92 cc/1000 str.

For the same years 4BD1T the range is 70 to 78 cc/1000 str - this is approx 5% greater than for the 4BD1.

Thanks John
No matter how hard I try to remember the factory setting mine was at I can't recall the exact number so I wish not to comment at this stage... You maths are the same as I figured also...I'll still try and get real life figures though.

Just received my mxa-6r ,truck sump and oil filter arrangement