Thread: What year is this 4bd1

Originally Posted by Dougal

Did you ever run flow simulations on those CAD models Ben?

No not yet - still on the list...

Ok numbers are from the new engine/just brought ij pump
894455-6962
101401-0742
848m248590
1010408590
S4a95c412rs2s
I also rang the last owner and queried he on the date .he said the add was mistaken it actually came from a 1989 npr300 truck im thinking of trying the ij pump on my ute tomorrow because I'm not overly happy with it .I brought it 3 mouths ago a reco one its a turbo pump from a late 4bd1t. It hunts a little at idle and doesn't have as much torque down low as it should I have wondered if it is compatible with my 85 4bd1+t

Lack of torque down low was the issue Rijidij had with his 4BD1T before he tweaked the boost compensator. Pretty sure he posted up a good thread on what he did to sort it out.

IIRC the issue was the compensator was holding off the fuelling too much and resulting in much less low down that my 4bd1+t with the NA pump.

Steve

Thanks steve but my pump doesnt have a boost compensator most 4bd1t don't seem to in aust.

Originally Posted by Adrian18

Ok numbers are from the new engine/just brought ij pump
894455-6962
101401-0742
848m248590
1010408590
S4a95c412rs2s
I also rang the last owner and queried he on the date .he said the add was mistaken it actually came from a 1989 npr300 truck im thinking of trying the ij pump on my ute tomorrow because I'm not overly happy with it .I brought it 3 mouths ago a reco one its a turbo pump from a late 4bd1t. It hunts a little at idle and doesn't have as much torque down low as it should I have wondered if it is compatible with my 85 4bd1+t

The first number, 894455-6962, is the Isuzu part number for the fuel injection pump.

Unfortunately, my Isuzu 4BD1 parts book doesn't list that particular IP part number. Had it been among the list, I may have been able to find more info like year, etc.

BTW the book lists 62 different IP part numbers for 4BD1's, and also doesn't include the IP used in the last of the 4BD1T's supplied for the army 6x6's (Isuzu part number 897066-5020).

Originally Posted by steveG

Lack of torque down low was the issue Rijidij had with his 4BD1T before he tweaked the boost compensator. Pretty sure he posted up a good thread on what he did to sort it out.

He took it off IIRC.
I've got a thread somewhere on making an internal stop for the boost compensator to set off-boost fuelling independently from the preload adjustment.

Small changes (0.2mm) make a significant difference.

Originally Posted by Adrian18

Will get the nos .tonight bush 65 my plan is for the engine is the next project 4bd1t + mxa5 + lt230 remote mount ie tail shaft between in a 130 dualcab maybe is that whats in your 120 got any more pics

What I have is a 4BD1T (1989) + MXA-6R + Atlas II (5:1).

Because I had these in a rangie, there wasn't room to remote mount an LT230 behind an MXA-6, so I went with the Atlas II.

I wanted a 120 for years, but kept missing out on them (too slow off the mark ) when any came up. Then I found one with no engine, gearbox, or transfer case, so those were swapped out of the old rangie.

With a 110, etc. the cross member under the rear of the front seat box appears further back than what rangies have, but I may have still had problems remote mounting an LT230 behind the MXA-6. It is the extension housing for sixth gear that has the width problem (fouling the front drive extension of the LT230.

With an MXA-5, you have a shorter gearbox and the front extension housing of an LT230 will fit alongside. There may be enough clearance to the cross member to remote mount an LT230 with a minimum length tail shaft. If not, you have options, with a sympathetic engineer, for moving the location of the cross member.

What does the cable do heading around the back seems to contect to a cam on the back the other end goes to the what seems to be a stop solinoid it also has a normal stop lever on the top of the pump and a cable from there to the stop solinoid ive never seen one like this incidently the gear box is a msa-5p