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I have just fitted a 2.8 4M40 pump on my 3ltr 1KZ engine, she started first time on the garage floor, but sadly just ticks over and reves little more! can anyone shine some light on this please?
Ps; I am intending to fit the lump into my boat if I can get it sorted........
I've been driving a 3ltr surf for 4 years and love her! hence the boat engine choice.
Why dont you guys just put a 3L pump on, add a boost comp top cover, and be done with it.? The 3L has plenty of full load adjustment to get you fuel up to 1kz requirements, and the boost comp is simple to fit. And it will bolt up.
There are so many on ebay right now...
If anyone needs a boost comp top cover, we have about a 100 sitting in the back of the shop...
Just sayin.
Im not sure exact numbers, but i could find out...
I would think that you could make up for the .2L difference just fine +some. 1full turn usually equates to anywhere from 4-8cc/1000st or more. And you can probably get about 3 full turns before you hit the "just before runaway" area. You should only need 2 max or less.
Ill see if i can find the numbers.
Heres a rundown of all 3 pumps and their delivery numbers for various tests. Its in russian, but numbers are all there.
Basically the rpm is the 1200-800-1500etc
The column that says cm3 is the delivery qty, and the number of shots is always 200.
So not too bad to interpret.
Looks to be fairly close (within 5cc over 200st in most every test value.)
So i don't doubt at all that could be made up with a turn of the screw.
I had a 2.5L 4D56T pump on the bench on thursday that i had turned way up(after a rebuild), and got more than double the the test value at full boost full load@1200rpm. That was 2.5 turns in from spec. Just for loose reference. A little does a lot on the VE
Cheers
Thanks for the reply.....Youre timing might be out, or you have a fuel supply/return problem...
Make sure you get all the air out of the lines.
I followed advice from a thread on a site of a chap who had done the job, his advice was extend the slotted mounting holes by 1/4" and the timing would be spot on, that's what I did and when rotating pump a few deg adv/retard, she run's rougher. so I am taking the 7# number from his blog as I did everything he did and the engine runs but won't revve .........I've never timed a 4M40. But I've never met any diesel that injected *after* TDC.
Those are the factory calibration numbers. What is of the most interest is how much fuel each pump can deliver with the screws wound out.
For example the VE pump fitted to the cummins 4BT and 6BT are capable of ~180cc/1000 shots max.
you need to time the pump on the bench before you put it on the motor. Or, if you can see the keyway on the input shaft(take the gear off), you can do it on the motor. much easier on the bench though.
Get yourself the proper timing tool with a dial guage. theyre cheap and itll save you a ton of guessing. It should be timed to xx mm @ outlet A,B,C,D. It should be in your manual. The keyway on the input shaft will tell you what delivery outlet will fire and the rear of the pump has letters for each outlet. Pump shaft rotates to the right(looking at front of pump) so put it to the flat spot before A(it will move back and forth a bit with no tension before the next cam lobe) Make sure to zero your guage while rotating back and forth a little a few times to ensure you're at the BDC of that stroke.
Use the tool to attain the proper stroke of the plunger from the manual, lock it with the timing lock bolt at the front. kind of tricky with only two hands, but you'll get it.
install pump, install timing gear, make a new mark on the gear in relation to the case as well as the pump flange to the mounting. Timed. None of this degrees crap on a VE. and you now have your permanent marks for future reference, when you do a belt change, etc.