Serious question time - vintage 1hz close to 700 k km's - keep it going or rebuild/replace? (1 Viewer)

[sunrk]

Serious question time... My 80 is about 350 km off clocking 700 k km's still with original 1hz motor from factory. I know it will need the valve shims done plus the usually 100 k km stuff of replacement t-belt, tensioner, water pump and t-stat to make it viable for the next 100 k km's of life.

My question is this - should I bother investigating getting the current motor pulled out and rebuilt (if possible and worthwhile) or simply get it swapped with a reco engine? The cost of a 1hz+t or 1hdt or better is outside my budget scope without a lotto win so I'm limiting to just 1hz's for now.

I know zero about the motor's internal condition or the state of the head, but it still runs (was driving it today). Engine has never been disassembled or out of the vehicle since I've owned in from 2011.

I've toyed with the idea of a new 1hz but that's more than the whole vehicle is worth to buy a brand new engine (Toyota still make 1hz's).

 

[Hulsty]

Why not just keep running it? Compression test and if it starts/runs well keep on trucking.

 

[KiwiDingo]

What's wrong with it currently to warrant you wanting to pull it apart? If it's still running good just leave it alone, do the usual servicing maintenance and continue driving it.

 

[bj70bc]

if its good its good, replacing/rebuilding engines is not preventative maintanence

 

[sunrk]

Power is low and variable. It doesn't idle right. The oil pressure is lower than I would expect.

I have a full new set of injectors to fit (not a injector pump) and it needs shims done (I did them at 600 k km's about 6 years ago) plus due for new t-belt, tensioner, water pump and t-stat as well.

 

[dmjay]

Post up your compression test numbers.
Only then can you tell what the state of the engine is.
If you have not done this, then I am not sure what answers you seek from a forum.

 

[sunrk]

Going to get a $50 ebay diesel compression test kit and do that test. Most of the resources I've looked at say to do it with a non-cold slightly warm engine and to use the glowplug holes which are a lot easier to get to.

 

[Hulsty]

And after the valve adjustment.

 

[sunrk]

And after the valve adjustment.

Reminds me I need to try and find where I put the bag of spare shims left over from the doing the job at 600 k km's about 7 yrs ago.