snoopyspaz

I recently couldn't pass up an awesome buy for a 3.0. It's coming from a 1993 T100. I hvae an '89 p/u, dlx 3.0. Mine has a blown head and many more miles than I can account for (OD says 430k). Just wanted to see if there are possibly any issues I may run into, electronic or otherwise. I'm going to ask for the computer from the other truck (complete motor, pulled from truck) as well as any odds and ends he's willing to give me. Anything I should be looking out for? I tried searching for anything on here or just google searches but haven't found anything that sticks out. Thanks in advance for any help, much appreciated.

Peter

justin_4runner

if i was doing it i would run all the sensors off your 89 unless they are the same (type). the wiring harness might not be the same, so i would look at both the diagrams and make sure u are not going to fry the ecu...

snoopyspaz

Yeah, going to swap over everything possible from the 89 motor to the 93 motor sensor related. Going to be trying to salvage as much as possible. I've read that the older 3.0 motors were not hydrolic motors, used a cheaper spring method? Anyone know if this will cause an issue?

blake.nemitz

just use the tensioner from the new one its a better setup that the spring

snoopyspaz

Anything else I should be looking for? Will the computer make that big of a difference? Should I be using the computer from the doner car or should I keep mine? I'm thinking since I have my engine, going to keep all the current sensors, plugs, etc to avoid any issues but wanted to see if others have any info on what else to lookout for. thanks again, you guys are awesome!

tlrskunk

Keep yours and use your sensors. if the plugs match check part numbers and run the newer sensors and save your old ones as spares. Toyota(and most car manufactures) like to reuse parts between models as it is cheaper so just remember that.

snoopyspaz

Yes, was planning on reusing as much of the newer sensors as possible, when possible. I'm more interested in the computer, is there the possibility of computer issues using my old computer and like newer sensors? I can't imagine so, since theoretically, it is the same motor, just uses hydrolics instead of springs. Thanks again for the help, really helping me out here

tlrskunk

No just run your old computer. I would be willing to bet(I have never seen a T100/89 computer side by side) that the T100 is a different plug and would be a nightmare to swap into working.

justin_4runner

if the sensors have the same part numbers then it wont matter. now if u want to run the newer computer get a wiring schematic for the 93 and one for the 89 and check that the plug ins are the same. meaning like where the wires go into the ecu. i would really just run the ecu from the 89 so i wouldn't have to worry.

4toy89

I just had a new 3.0 put I to my 4runner about a month ago and I'm using up oil somewhere... I dont see it leaking anywhere but I just added a quart and it barely showed up Also I'm losing coolant. The weird thing is I believe I need a new radiator as well because the water isn't flowing through mine like it should be. I'm not overheating according to my temp gauge, in fact I'm below the half way point... I'm lost as too what's going on.

Chuki

I'd start off by running a compression test.

4toy89

But the motor only has 400 or less miles on it....

snoopyspaz

Well, got the motor Saturday morning, looks really good out of the truck. Got the comptuer anyways for $10 bucks, looks just like mine but will use my old one for now. Only bummer is the guy cut the wire harness, so, gotta make sure to be extra careful with mine when taking apart (hate broken connectors). Going to rebuild the motor, new head gasket and any other gasket/seal I can possibly do.

Quick question, more of a personal preference I'm sure, if the engine was running fine and I want to swap out the head gaskets (engine has 154k miles on it), should I be taking the heads down to be machined at the local machine shop or should I go ahead and just swap out the head gasket? I'm on a tight budget and if I can get away with saving a little more cash, I'd skip the machine work. On the other hand, having the heads reqorked can't hurt and will most likely save me in the long run. With 154k miles, it's past middle life currently but if I can squeek out another 75k-100k miles out of this, I would be more than happy. If doing the head gasket and, since everything will be opened up and out of the truck, timing belt job (all related components), possibly oil pump, general clean up, etc, etc. Been doing a lot of reading here lately, not an easy job but I have time and general knowledge of engine swaps, just no rebuild like this experience. Valve jobs scare me

Guess I'm just looking for advice on having the heads reworked or going with the cheaper way out and just cleaning them up and slapping them back on. Currently as far as I know, there haven't been any issues with the engine regarding head gaskets but since it will be out of the vehicle and lots easier to work on, thought I'd go ahead and do what I can. thanks again guys for all your input, much appreciated.

snoopyspaz

Anyone have any thoughts to the above post? Just looking to cross all my t's and dot my i's before diving in. Thanks again for any help. Still scouring the site for more info as usual.