Wednesday, August 29, 2018

109 Land Rover changing the engine yet again.............Part 2

Now the old engine is out and I have to remove the clutch/flywheel/flywheel housing. Pretty straightforward and it all came apart easy enough. I used an alignment tools tapered end for holding the flywheel while loosening the bolts.




You can see in the pictures that I have a gravel drive and it is on a slope. I have to put down plywood to get the engine hoist to roll. I was able to remove the engine from the frame by myself, although I eventually had to put in some wooden cleats to keep it from rolling back into the bumper.



Once the flywheel was off I could see some damage done at the timing slot. I can only wonder what kind of forces were used to do that!



Now if you are not familiar with the 200TDI it is a direct injected engine and fuel delivery timing is as critical as spark timing on a petrol engine. Accurate timing is accomplished by inserting a pin thru the bottom of the flywheel housing and locking the flywheel in place via the slot pictured above. Once this is done the crankshaft is now immobilized in the correct position. Next the camshaft is aligned to marks on the case and the injector pump is locked into position via a similar pin. Set on the belt and you have an uncle named Bob.
    With the 200 not being native to the 1960 109 the flywheel drain/timing hole is blocked by the crossmember. This results in setting the timing by measuring the TDC of  #1 piston and can lead to small error. I wanted to avoid this, and had found it frustrating with the engine I just removed to not "know" how off I might be and how much of the smoke/oil leakage might be from this mistiming.
    I decided to modify my crossmember to allow access top the drain/timing hole. I could only do this with any accuracy with the engine removed so now was the time if I was going to do it.  Finally after much thinking I decided to just remove part of the front of the crossmember and weld in the pieces. It came out OK, I should have made the cut 1/4"-3/8" deeper. It was a process of cleaning, marking and cutting and welding. I coated it with the zinc spray and then an industrial gray paint. I can easily get my fat hand in there and see up into the hole.




Have to admit I was disappointed to find the galvanizing dip I had done to the frame did not penetrate much inside. You can see in the second pic how much rust came out of the crossmember.




    That done I waited the new block and made the screens for my front windows and did the seals on the timing chest front cover which I covered in an earlier post.  http://poppageno.blogspot.com/2018/08/200tdi-seal-tool.html



   Then came the big day, the long block arrived July 19 2018.



At this point I want to go over my reasoning for getting a long block or what's known in the UK as a 3/4 engine. Partly due to the difficulty finding a shop to do my old engine. I found someone who would machine it but because they never worked on them would not put it back together. That brings me to me, I'm not comfortable in doing all the shimming and measuring with cams and thrust bearings that I want to do one. So I bought a long block. What came with it you might ask? I thought at time of purchase it was just going to be the block, crank, pistons, cam, rollers, lifters, freeze plugs. What came included oil pump, ladder frame and oil pan. I had only to drop in my oil pump drive shaft and the bottom end was done!
Some pics of the long block;







I started with the back and the flywheel housing so I could get it off the ground and into my "engine stand".



I also put on the vacuum pump to cover the hole after dropping in the oil pump drive shaft along with the side covers while access was easy.


On the other side I put in the dipstick to fill that hole.


The flywheel housing and clutch went on OK.





Then it was time to put it on the engine stand;




 I tried to put it in with the engine mounting brackets on but because of the angles I had to take them off. I did it by myself and had to reposition the chain twice. I sat it on a pallet on the frame for the resets.



   It only took me  around 70 minutes to get it in. I used alignment bolts in the flywheel housing to line up the bellhousing and using the old crankshaft timing gear on the crankshaft I was able to rotate the flywheel for the splines to line up.




It wasn't hanging straight so at one point I had to lever it straight.



Then it was a matter of putting on the engine mounts.



And timing chest. It was a bit fiddlely as I had left the injector pump on. Then I could install the crank and cam seals with the new tool I made.


With the seals in I could put on the crankshaft timing gear and the camshaft pulley and the injector pump timing pulley. Line up all the timing marks. You'll remember the crankshaft is locked in by the flywheel timing pin. I looked under thru the hole to see if my crankshaft was lined up.


   Since the slot wasn't visible I knew I was 180° out and rotated the crankshaft so I could see this;


That is when I found out that I had not cut my crossmember deep enough to fit the locking pin.


I ground down the OD of the locking pin until it fit. It took about 5 trips under the 109 for test fitting until I got it.




The injector pump has it's own timing lock on the side which I set when I took things apart so it was just a matter of putting the pulley on correctly. The camshaft is indexed for it's pulley and then spun around to the timing mark. The idle pulley is put on. Before I put on the timing belt I snapped some pics of the cylinders. Then the belt. After the belt is on the tensioning pulley is put on and double tensioned.


With everything all lined up and double tensioned;



I did notice that there were 3 bolts missing from the oil pan during one of my many excursions under the engine.


 
With the timing belt all done I put on a new head gasket(2 holer according to my measurements) and set the head on with the push rods and rocker arms ready. I set in the head bolts and because it was evening and I was tired n hungry, Quickly I put on the crankshaft damper then I quit for the night.






    After dinner I downloaded my pics on my computer and that's when I noticed 2 things; 1 no real new crosshatching and this;


I feared it was a scratch or a crack.

To be continued........on Part 3.

2 comments:

  1. Is the engine finally running well are everything right in the world or what? No October update...maddening!

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    1. I only have 470 miles on it. It runs fine, smoke free, about the same power, no leaks in the manifold area so it must have been rings. There is however a slight leak from what I figure is the rear main seal coming out the flywheel housing drain hole. So I'm 95% happy with it. I have not done more than a hour at a time yet and need to do a couple of hours run to make sure it all holds together, but now I am having some other noise at speed I have to figure out before I can do that. It is rotational and I can only hear it at around 30mph.

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