Build Isuzu 4BD1T Lexus LX450 (Land Cruiser) Build

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I will have to call and see what they say about how the process goes and how they verify everything. If they truly just look at the cover only then I might be game. Otherwise I could just get an id plate from a 4bd2t and put it on the 1. Right now the only affordable engine is the 4bd2. Others they want like 6k for the whole truck. Shoot, the one I am looking at with the 4bd2t wants 4k for the whole truck.

Iwas hoping to use my A442
 
I also ordered a Gates waterpump
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I bought one. It was a Chinese pump in a Gates box. Maybe it's what Gates sells?
Either that or it got swapped out for the Chinese one by the Ebay seller I bought it from.

Anyway it lasted about four months. The bearing seized, shaft came out, and the fan went into the radiator:mad:
 
FL cruiser said:
I bought one. It was a Chinese pump in a Gates box. Maybe it's what Gates sells?
Either that or it got swapped out for the Chinese one by the Ebay seller I bought it from.

Anyway it lasted about four months. The bearing seized, shaft came out, and the fan went into the radiator:mad:
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Wonderful.....sigh maybe i will run the old one and keep this as an in stock replacement.
 
Wheelingnoob said:
Wonderful.....sigh maybe i will run the old one and keep this as an in stock replacement.
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The stock water pump is fully rebuildable. I wouldn't ditch it for anything except another Isuzu part.

Mine is still original. Never been reconditioned to my knowledge.
 
Are u going to run a tranny filter? I know a lot of vehicles do, but wasn't sure of the pump was strong enough in the a440.
 
mjosoba said:
Are u going to run a tranny filter? I know a lot of vehicles do, but wasn't sure of the pump was strong enough in the a440.
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I would like too, I have the same concern about the restriction on the cooling curcuit.
 
Here's a simple idea to determine flow rate...

Remove both lines from the Trans cooler, place one in a measured bucket of ATF, the other goes in an empty bucket.

Pull out your trusty stop watch and do the math at various RPM.
 
ForealBoreal said:
I wonder how much of a restriction this would be.
Anyway to find out what the flow rate of one of these trans is?
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I'm not sure, I can't imagine the restriction would be too great.

I would like to know how much the flow is as well, mine will be diffrent than stock once the VB has been modded though.
 
The newer NPRs all have an external spin-on filter for the AW450 transmission. IIRC, the AW450 pump is essentially the same as the one in a A440F so I would not expect it to be a problem. You might even be able to snag the filter assembly of a '99+ NPR for low $$. It is a nicely built unit that is mounted on the frame next to the water separator on the DS just ahead of the battery box.
 
Thanks ASTR for the info on the AW450 filter setup. I didn't know they came with one.

Jeremy,
I am looking at putting filters on both of mine as well. I don't think it will be an issue with pressure, especially once we open up the circuit to the cooler a little. but I was planning on putting an inline gauge for pressure just to see if there is an increase over time as filter media fills with particulate.

Don
 
Do any trannys come with bypass filter set ups? It would avoid the worry of clogging and restricting flow and would also be able to filter much smaller particulate. I run a bypass on my enigne oil and the restictor oriface is something like 1mm diameter. Might flow the whole engine oil volume in an hour or something like that.
 
All of the tranny filters that I've seen go in the return line from the cooler and that just dumps back into the trans oil pan. The automatics that I'm familiar with have a bypass valve within the transmission in case the cooler gets plugged which would also protect you if the filter gets plugged. I think most spin on filters also have an internal bypass valve should they be clogged.

I added an external filter on my Ford E350 which I connected in series with the tranny cooler. I bought the filter mount from a local hydraulic shop. It came with an external port. I just replaced the port plug with a pressure switch (5 psi IIRC) and wired it to an indicator lamp on the dash. Should the pressure between the cooler and filter exceed the switch limit, the light should come on to tell me that the filter is clogged. So far, it has not and I did test it by pinching off the line from the filter back to the tranny. Still, my transmission took a crap :frown: Another unexpected repair project!
 
Thanks for all the information on the trans filters, I am defiantly going to include that in my setup.

Well I have been out of town working for the last two weeks straight so nothing got done. This weekend my wife let me use one of "our together days" to work on the engine. I leave again for another two week stint tomorrow.

Today I set about getting the block painted, I like a few other Isuzu 4BD swapwers chose "New Ford Gray" Engine block paint. I (my 70 year old father actually) masked off everything on the fresh stripped block but what I wanted to paint. I started laying coats at and 3 coats in a had a great glossy covering.

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Looks really good, paint went on great. I plan to paint again once a get more of the bits are on such as oil cooler and front and rear covers as well as head.

I went over all the threaded holes with the correct size bottoming tap to clean out the threads (glad I did this most had a good build up of gunk) I then washed out with break clean. I also went through each of the head bolt holes same thing lots of crud and very glad I did it.

While I was painting my dad got the liners in the deep freeze, 2 hours later they where frozen. and the block was ready for liners. Sorry no pictures on them going in I had my hands full. They all went in well and fit nice and snug.

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Starting to look like new!

I also went over the two small scratches in the block deck with some JB weld, I let it set up then used a razor to shave off the excess. You can not feel the scratch at all now with a fingernail.

After the liners where in I attached the pistons to the corresponding balanced rods and set them aside for next time. I also got the freshly cleaned up oil cooler back on the block.

I found that the Vinegar really is not good for cast parts, the put the timing gear rear housing in for two weeks.......yeah its destroyed. Should have learned my lesson first time round. I found used one on Ebay today and ordered it ($150 mistake). :bang:

Anyway that's it for now, I hope to be back at it just before May.

Some had asked in the pistons where Alfin style with the steel ring insert and they are, I did a scratch test on them.
 
It looks like you may be changing the progress from "two steps forward, one step back" to "get'n er done!" after all the gremlins youve found up to this point!

Im curious about the engine paint, I know you can find paint on the shelf of every canadian tire and NAPA, but I assume your using something specific for yours. What is it, did you need primer? Where'd you get it?
 
Thanks Doug


cody c said:
It looks like you may be changing the progress from "two steps forward, one step back" to "get'n er done!" after all the gremlins youve found up to this point!

Im curious about the engine paint, I know you can find paint on the shelf of every canadian tire and NAPA, but I assume your using something specific for yours. What is it, did you need primer? Where'd you get it?
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Yes I finally feel like I took a few steps forward yesterday. If I was not out of town so much this month I would have a runner in a couple weekends.

I cant remember the manufacturer of the paint but it was bought at NAPA. Its a commercial engine epoxy, no primer is needed. It cures once it reaches 400f but even so after a few hours this stuff was hard and quite tough. I was really impressed how well it went on, put on 3 coats total allowing 10min between each for it to flash.

Thanks!
 
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