Thread: Injector pump problems!

Chief I do believe you have found the reasaon your rig doesen't go all that hard compared to others. An unusual problem for a Kiki pump as they are the bees knees I am led to believe. (At least they were back when these inline pumps were all the rage, still a great bit of design and jap quality build IMO)

Not sure what the problem actually IS, but time to take it off and drop it into a specialist.

JC

or grab the emei and redo it yourself, you can make up a test rack with 4 test tubes and some pipes on the HP lines...

One 4BD2 owner on 4BTswaps accidentally rotated some of his injector barrels and found a whole lot more go, but of course this unbalanced the injection amounts. He then took it to an injection shop and had them reset the lot for him.

If you've got the time and a clean enough workshop Blacknight's suggestion is worth following. If you haven't then drop it off to a pump shop and ask them to check what the maximum delivery is while they've got it on the bench.

thanks guys hoping you few were to inform me i am very happy with the power (blasts most diesel off the road)but still think there should be more on tap... i have been told about checking the pumps yourself but i have nothing to guide me i know a few fellas that work at a injection shop in town they said they will put it on the test machine and check all the settings how many cc's can a stock pump pump out if tuned ? i recall dougal saying about carcrafter having 300cc per 1000shots would this involve different plungers and full rebuil ?

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

i know a few fellas that work at a injection shop in town they said they will put it on the test machine and check all the settings how many cc's can a stock pump pump out if tuned ? i recall dougal saying about carcrafter having 300cc per 1000shots would this involve different plungers and full rebuil ?

Excellent. I'd expect around 100-120cc/1000 from a stock non-turbo pump, the lads might be able to tickle some more out.

Apparently 800cc is possible from these pumps, but with very few standard parts. I forget the exact amount that carcrafter is running but he had to fit a different governor and shave the cylinder block quite a lot to get it to physically fit.

120cc of fuel can be burnt clean with just over 20psi boost and a good intercooler. This is a little over 600Nm and over 200hp.

i hav been told by other diesel places that standard it will be around 50-70cc when i told them about carcrafter having 800cc they laughed at me and said a 15L cummins wouldnt be capable of that i then said that it has had alot of work done,over 60psi boost and is producing ALOT of HP they then said that they doubt that it would be making that much power and dissmissed the whole idea

dougal have you had any work done to your pump ? also i remember you saying carcrafter had his reving to 5k is he running a very big risk ? or has he done other mods to compensate ?

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

i hav been told by other diesel places that standard it will be around 50-70cc when i told them about carcrafter having 800cc they laughed at me and said a 15L cummins wouldnt be capable of that i then said that it has had alot of work done,over 60psi boost and is producing ALOT of HP they then said that they doubt that it would be making that much power and dissmissed the whole idea

Fair enough too. If I hadn't followed the project from the start I wouldn't believe him either. Stiffer valve springs and head studs are the only internal mods I'm aware of. He doesn't run it at full power much, traction is a problem.

I have some EPA tag photos which show the stock fuelling.

1980 4BD1 53.9 cc/1000 shots 87hp.
1985 4BD1T 70.4 cc/1000 shots 116hp.
1985 4BD1 65.1 cc/1000 shots 100hp.
1989 4BD1T 70.0 cc/1000 shots, 121hp.
1991 4BD2T 76.0 cc/1000 shots, 129hp.