Oil seals and Old Datsun’s
Why is it that every webpage in the world has got it all wrong when it comes to oil seals for The Daihatsu Move? I ask for a Front crank oil seal and what I keep getting is a Camshaft oil seal.
All I want is the one that goes on the end of the crank shaft as shown in this image. I have also measured it and measured the camshaft oil seals and no matter what I ask for the auto factors always know better and what appears in the post is the wrong one, three times now, and three returns! Hopefully I have managed to convince them that what I want is what I want and not what they think I need.
Anyway to pass the time I have been helping next door with his Datsun 160J projects, (He has several!). The big bugger is the blue 1800 sat in front of the workshop. In a previous post (July 6th) I talked about how we fitted the engine to the car, but I didn’t tell you what happened next!
July 6th 2014:
Last item of the day was to assist my next door “car nutter” with fitting a 1800 engine to one of his Datsun’s. We had attempted to fit one on Friday, only to find the sump was the wrong model, and the whole engine/gearbox unit needed pulling out and the sump swapping over for the right version (to which I left him to it). By the time I had finished the paint on the MOVE, he had the sump ready to fit.
A few technical issues with dip sticks needed sorting out (yes we had a couple of dip sticks alright on the engine!), we also had an engine mount position to sort, but all was overcome and the engine is now in the car sat on the engine mounts.
A few days after fitting this, We attempted to start the engine after checking everything and hey presto it started, in fact it ran very well. Minimal tinkering was required and we were both pleased as punch, the world was a loverly place yadda yadda. I packed up my tools and left him with the car, went off to play with the MOVE and the GT (as you do). A few hours later I came home to find a disappointed looking Datsun owner bent over his 160J stripping the engine! Curious as I am I asked what was going on to discover the valves had seized in the head. Not good, thats two engines seized!
Cut a long story short, I helped remove the head from the engine and yes two of the valves were rock solid in the head, and required some effort to get out of the head. What was weird was that they were all covered in what looked like varnish? The head was left with its owner to clean up and de-coke. The valves were not bent and it all looked saveable.
A few days passed, I got on with whatever it is I do (time waste normally), and the head was ready to refit. There is some learning to do with these old Datsun engines, especially when it comes to timing chains, but the head goes back on the car, and within a few hours we are ready to restart the engine. A turn of the key a few cranks of the throttle and he presto its back running again and sounding sweet, over the next 20 minutes or so we tinker and agree the engine is saved. But I notice smoke starts to appear in the exhaust fumes.
let me digress for a Minute. “What the hell are you doing playing with a Datsun”, I hear a lot of you say? and more to the point “what on earth does one of these Datuns things look like?” Well wonder no more, here is a picture of one.
Why a Rally version? because thats whay this is all about, getting a road car running, so it can become a test mule and sort out the rally bits for his rally version of the 160j. Here is the rally car shell being rebuilt
Right now you know what it is, lets get on with the story….
So at the sign of smoke I start to wonder if this 1800 engine is a bit of a dog and the 15 odd years its been sat in a garage was for a good reason e.g. its knackered. Best I exit stage right at this point and go do something else.
Start Déjà vu
…I packed up my tools and left him with the car and went off to play with the MOVE and the GT (as you do). A few hours later I came home to find a disappointed looking Datsun owner bent over his 160J stripping the engine! Curious as I am I asked what was going on to discover the valves had seized in the head…
End Déjà vu
You have got to be kidding me, thats three times now (one with the original 1660 and twice with this 1800)! We conclude its time to shut the bonnet and walk away for a while.
Some days later (yesterday to be exact) we return the the scene of the crime and after some internet searches and advice we have concluded that the fuel is causing the issue. Having taken the fuel hose off the pump and turned it over, the liquid that came out looked like it had just come out of a can of Rola Cola.
Fowl smelling dark old nasty fuel, this stuff was turning to varnish when the hot engine was left to cool down. The stuff was coating the valves and being drawn up the valve guides until the valves seized solid in the head.
So off came the head again, and yes all the inlets were like treacle, the valves were coated in thick varnish and after working the valves out of the guides again, they were coated in varnish. Some hours were spent cleaning the head and rebuilding it again, By 8:30pm last night the head was back on the car, and awaiting the rest of the engine to be built around it.
Today in theory we should have it running again, this time off a separate fuel supply, the fuel tank has already been removed and given a good clean out. I think the fuel lines will need replacing as I realistically think, for the time and energy it takes to chemically clean the old ones its easier and cheaper to stick new ones on. The Carb needs stripping down and cleaning out as well. Its amazing that this engine did run at all and was smooth?
Hindsight is a wonderful thing, and the internet is full of experts in the practice of “told you so’s” or “well you should of asked me”, but life isn’t like that.
Right here we are as of Sunday AM, will it start? more on that later… Will it Varnish up? More on that later….