primitive 4agze rebuild

[themaleman]

ok its time for me to get off my ass and finish my dam project. all that is holding me up is..

firstly, i want to replace the berings, gaskets, mabey pistons and rings, and basically take the engine apart and tidy it up.

secondly, i need to wire in the lem and get it tuned.

everything else is done, for example..
turbo and manifolds are on the engine (exaust is all plumbed up), intercooler piping is one the engine, oil filter has been moved so the turbo will fit, powerstering pump has been modifued so it runs without the aircon, and battery is in the boot.

i need to know exactly what is involved in rebuilding the engine. the only experience i have with doing this (which is fu#k all) was taking my old ford laser engine apart, at this stage i dont think ill be taking the head apart

where is a good place to start?.....

[rollaholic]

the place to start is to get the engine out of the car imo, makes life much easier. if you are going to replace rings and pistons you should check the bores, as they will probably want at the least a light hone.

i've been a mechanic for three years, and i plan to send my bottom end to a reconditioning specialist before it goes into the car - i'm capable of doing it myself but theres alot of small details involved that i would feel more comfortable trusting to the hands of a pro.

in your case with a turbo in the mix i would highly recommend doing this also

[themaleman]

the engine is out of the car, its from a 1989 gtz i believe, i also have a ae101 4agze in the shed 2, how much is it costing you for the rebuild? i got quoted $2300 (not including touching the head). i dont have that sort of money so im wanting to try it myself

[DFECTED]

yip take it to a reconditioners, its worth getting a valve grind on the head to if they have the good gear. strip it down and just take in the short block and head.

that price is a bit high if that doesnt include doing the head.

[themaleman]

i need to know exactly what is involved in rebuilding the engine.

[2LTR Rona]

Based on your comment above about NOT pulling the head apart the rebuild you are thinking about doing is commonly referred to as a bottom end rebuild.

First point of call is breaking it all down...
remove items attached to block i.e. oil filter, water pump, water lines etc etc
remove head
remove sump
remove end caps etc & crank

when done you have a stack of parts like this


And a block that looks something like this


in order for it to all go back together nicely you will need to invest in new gasket set, new bearings, depending on how far you want to take it new rings & or pistons, this is what went back in my bluetop along with all new bearings


while it is all apart you may want to send the crank off to be crack tested & polished, in doing this I found that mine was cracked, along with number 2 conrod & thus both were replaced

While a bottom end rebuild seems like something thats pretty straight forward, one slight fck up during installation = kiss engine goodbye when turning key.

I did most of the grunt work on my rebuild however throughout the whole process I had a mate with good knows how many years experience there to walk me through bits n pieces. I would never attempt this by myself first time round without that sort of help / knowledge available

The above is all off the top of my head & I am sure there are parts missing which others will fill in, but hope it helps.

A few more pics of the re-build are here http://www.villagephotos.com/pubbrowse. ... id=1655868
Might help to give you an idea of it all going back together and whats involved

[frost]

most important thing i have to say is, when removing parts like caps, rods, pistons, make sure you mark them so you know this rod with this cap into this bore, us a vivid,

[themaleman]

cheers thats very help full, how much did gaskets and berngs end up costing? tryna workout how much $ i have 2 save

[2LTR Rona]

to be honest its been that long ago now I cant recall

Best bet would be to ring your local Toyota dealership and price it up, if you are purely want to do a cost exercise, then any price Revhead can get you will be slightly better than that.

I have receipts for my rebuild and all up it was in the ball park of $2000, however that included a reconditioned T50 from rear drive, some work done on the head, crack test on crank & number two rod, replacement crank & rod.

when doing a rebuild like this you will need to also factor in all the miscellaneous bits n pieces like tools you dont have i.e. ring compressors, brake clean (best invention ever!), sealant, new oil filter, new thermostat etc etc, and it can add up dam quickly too.

[hsmidy]

if your not modifiying anything eg boreing it out etc then a rebuild in itself is fairly straight forward just make sure ya measure your bearing clearence's

[Voyeur]

Try reading this. its the most information i have seen regarding blacktop rebuilds www.wheelsjamaica.com/wheels_forum/inde ... ic=69286.0

You may need to sign up to see it, but it's free and well worth it[/url]

[tsoob]

powerstering pump has been modifued so it runs without the aircon,

Can any one tell me how to do this?

[themaleman]

we welded another pully on the powerstering pump so it sits further out, inline with a free crank pully
[img][img]http://img512.imageshack.us/img512/9496/image587cc7.th.jpg[/img]
then we had 2 modify the pipe that runs over the pully as the new pully was higher (gtz) [/img]