Hello BHPians!
I’ve been here reading the forums since a long time and I had nothing on my own to post up until now!
Please note
1) This is an awfully long post as I'm posting a complete rebuild log
2) Methods used to do certain things may not be the actual way of doing things, since we are not professional mechanics
3) This is a hobby project which is still underway and any progress will be updated as it happens
We are not a professional mechanics, but we have a fairly good understanding about the way they work. I am a software engineer by profession and my brother is doing his 2nd year in mechanical engineering.
This post is about an on going restoration (/rebuild) of a December 2003 model Hyundai Santro, DIY style! Now you could ask, why Santro? Personally, I love it because it was the first car my family owned. I learned driving on it. Everyone will have that one car with an emotional attachment that they cannot seem to forget no matter how many better ones they own and in my case, it’s the Hyundai Santro.
The story
This story begins like this: Earlier this May, my brother and I were planning to get a new car. Our plan was to find a decent car, preferably a Skoda and make it stand out in the crowd. Being DIY’ers, we wanted to do everything on the car on our own and the project was meant to be a little technical exercise for us. We checked out a lot of them and we were sure about a 2010 Octavia. It was a Friday (1st May 2015) and as usual, I left for my office early - long before my brother woke up. At around 12 'o' clock, I got a call from my brother saying that I need to see something. After I came back home, we both went out to see this 'car'.
It was a Santro, just like ours, in white color! I saw the rear side of the car first. It was ok, with some major and minor dents and paint peels on the bumper and a lot of moss – signs of being there since some time. I looked at my brother in amazement and still I couldn’t see why he bought me to see this car. We had a usual talk with the owner and I found out that the car was simply sitting there since the past 6 years! Yes, 6 solid years! The reason for leaving the car there, in that condition was plain stupid – they bought another car (an Alto!!) and it was easier to drive
. This car was their first, so they had no mind to sell it. Instead, they left it in the rain and sun to rust!
All the 4 doors were stuck! We couldn't open any of them. But the driver side glass was down, letting in all the rain and dust! We could open the bonnet and the engine bay was in desperate condition! There was no battery, it was completely rusted and I could see the driver seat through the fire wall! It had simply rusted away! We were sure about the engine – 'it will (must) be ok' because we knew, it is so hard to kill! Also, the owner said they used to start the engine once every week till the battery was down and nobody has touched it (we could see that).
Now, they are looking get rid of it since it was taking up a lot of real estate and attachment to their 'first car' was long gone. They tried selling it to a scrap dealer. The guy came and left because he couldn't move the car as all the wheels were stuck – he told them that he can only take it from there after dismantling it into individual pieces and demanded money for his labour! It was about a week back. All the paper work was current, including the insurance! The car never met with an accident, the owner said (we're going to find out soon!).
Now I know why my brother brought me here! We’ve worked on almost all parts of our Santro, we have once changed the clutch facing on our own. This car looked like rubbish, but we knew this was only the skin (or is it?). We had to decide, go for this shitty car and spend the rest our lives being grease monkeys to fix this or buy the German and be happy. The decision was already made!
The plan was to buy this piece of junk anyway and fix it slowly and in the mean time, we'll get the Skoda too. We didn't bother bargaining. We offered 20K and if it was ok, we'd close the deal the next day, or else, it's bye bye. He said ok and showed us the paper work. We verified the chassis number and it was all good.
Moving the junk
On the way back, we realized the mammoth task we had in hand – getting the car to our home! This car was 2 km away from our home. Our plan was to start the engine, change the tyres and drive it home during the night. We didn't know that it was all about to change!
We went early to a battery shop and bought a new battery for the car, a 35 Ah Amaron. We took the magical WD-40 penetrating oil spray, rear break shoes, plug spanner, basic tools for battery changing and some engine oil for the car. We changed the tyres – there were no punctures, just filled them with air and they were good to go – of course they were in square shape but we just wanted to get the car to our home. The rear tyres were stuck – we knew this problem! This happens due to the friction lining in the brake shoes getting off. We immediately dismantled the wheel hub and changed the break shoes. The car was rolling again! Next, we opened the hood and connected the battery. The cluster lights went on – all good! We didn't try starting it. The idea was to remove the spark plugs and spray a little WD-40 directly into the cylinders to loosen the rust build up. We were also planning to pour some fresh oil into the engine.
He’s dead Jim
We tried removing the plugs, they were stuck. So stuck, that they made our plug spanner round! Next, we tried cranking the engine – it was stuck! There was no cranking, just a click! We thought it need a push to loosen up the engine. Next task was to get the car into a gear – before that, we had to open the driver side door. After some fiddling, we opened it and it was a sh*t hole! The floor was there no more! We saw this earlier but it was much worse! Back to the main business, we tried to give the car a push start and tried it – no use! The car simply stopped like sudden brakes were applied. We were sure the engine has seized. This must be on the news. They killed a Hyundai engine!
Tug of war
The car was full of cockroaches, snails, lizards and rats! It was an ecosystem on its own. It was around 3 pm when we decided to tow the car to our place with our mighty Santro! To tow this car, someone must get into the driver seat. It was no easy task. We bought 2 huge bottles of 'Hit all insect spray' and started spraying it all over. All hell was let loose! Roaches and lizards everywhere! Hundreds of roaches were killed that day, but the car became free of insects. We decided to tow the car during the night as the way to our home is a high-traffic road.
We checked and verified that the brakes are working fine. We waited till 11 'o' clock and pushed the car to the main road, tied up the tow clamps on both cars using a sturdy rope and started the commute!
Realization
We reached by around 11:30 and got the car into our little DIY 'workshop'. Next day, we managed to remove the plugs and sprayed the cylinders with WD-40. Still there was no cranking. The engine was still stuck. We tried loosening up all the belts and still no luck, but we found that the alternator was stuck. We wanted to start this motor at any cost. We used jacks to lift the front wheels and used a box spanner to rotate the crank shaft pulley. At last we were successful in rotating it. We could hear the pistons moving up and down. We tried starting again, the engine cranked! But it wasn't starting, it was simply cranking. We immediately found out that there was no compression in the cylinders because the engine cranking sounded easier for the starter than usual.
We thought the rings were gone or something, but to be sure, we decided to open up the valve case. We removed it and cranked the engine once again. The valves were not moving. The timing belt was broken. We broke it - to be exact. During our workout in rotating the crank shaft, we broke the timing belt and now the timing was off!
Luckily, we had the shop manual for the Hyundai Atos, which is the Malaysian version of Santro. We found that there were timing marks on the pulley and the engine case and we knew we could fix this. We just had to align the timing marks on the pulleys and the engine case and we are good to go! Sounded too simple to be true! We removed all the pulleys on the way to remove the timing belt case but we couldn't remove the crank shaft pulley! It was so tight and to further worsen the situation, we couldn’t stop the pulley to stop rotating! We consulted a local workshop to get an idea about loosening it. They said, we'd have to somehow stop it from turning by putting the car in gear and trying, which of course, was the info we already knew. The wheels was turning, making it impossible to loosen.
DIY tool to the rescue
We made a tool out of some scrap iron pieces that we had lying around. It was simply an "A" shape with holes to put in bolts. The idea was to tighten this to the crank shaft pulley and turn it and it would get stuck on the suspension frame and prevent the pulley from rotating. It worked! We loosened the pulley and took the timing belt case. It was full of rust and dust. As suspected, the timing belt was broken. The belt tensioner pulley was stuck. We had to remove it and fix it using WD-40 and brute force!
We successfully fixed the timing belt and everything was put back into place, except the valve case. We wanted to see the working of the valves :P . Once again, we cranked the engine and this time, the engine was cranking, but it wasn't fast enough. The battery was drained during our past attempts and the juice left wasn't enough to do the job.
Again, our mighty to the rescue! We used jump start cables in an attempt to jump start the dead one. Tried it almost 5 times and suddenly it came to life. It was so quiet! But since we left the valve case open, the oil was everywhere. We left the engine running for about 5 seconds only before putting the valve case back.
We drained the old oil and filled it with new oil, topped the radiator fluid and once again cranked the engine. This time, the engine RPM was very high. We thought it had something to do with the throttle cable, but it wasn't the culprit. We found out that the idle speed actuator (ISA) was dead – it was full of corrosion and it died while it was half open during our first start.
We replaced the idle speed actuator and now the engine runs fine. It's quiet and has no issues like squeaking sounds or cramps, but there seems to be a random RPM change issue while idling . It starts on the first turn of the key. We have tried driving the car for a short distance as we are not sure about its structural integrity. Next plan is to replace the gear box oil and start sorting out the body damage. The floor panel of the car is completely rusted and we are unsure about the depth of the rust. We are going to completely dismantle the car to its bare shell to see the extent of the rust.
Sorry again for the long post! More updates will be posted soon.