Hi All,
bare with me and I'll try to give you all information so you can help me with the analysis of my problem.
I have restored a 1971 2.2T engine to almost stock spec. The only derivation from stock are an 123-ignition distributor and K&N air cleaners.
A friend of mine and myself did all the work. We had new rings, bearings, cam drive and chain, valve guides etc. Old cam, pistons and cylinders. Restored original TIN40 carbs.
I did the break in as per Wayne's book.
When the engine was broken in I went to a very well reputed engine shop that specializes on air cooled hi performance engines. We ran it on his dyno and he did some small adjustments to carb and ignition and it delivered up to 6000 the expected 130 hp. He gave me thumbs up. It all sounded very nice!
Now I have driven it about 1500 kilometers since break in. It ran really good without any issues in all conditions.
I while ago I heard some ticking. It got worse slowly buy shurely. It sounded like a sewing machine and I knew someting was not right. I was hoping I missed to safely secure one of the valve adjusters.
I had a stethoscope and the ticking came from 6th cylinder on top. I removed the valve cover and the 6th cylinder intake valve adjuster was way off, about 1,5 mm. The adjuster locking nut was tight so it had not moved.
What kind of problem do I have here? I'm thinking broken valve spring...
What do you think? Thanks for any input!
Here is it on the dyno:
https://youtube.com/shorts/xg7KAiTAlE8?feature=share
Jörgen Forssling
Gothenburg
SWEDEN