We found the problem.



Timing marks aligned together, while the manual calls for them to be seven links apart (12 pins). Timing chain was reset and compression tested again. It's up at 110 where it should be after a rebuild.

We'll close up the engine and re-install everything that was removed today on Thursday. Hoping to fire it up on Friday or this weekend.

 

Ilya,
I'm so happy you found the problem with the engine after all the headaches. I have been wondering for the last week how it was coming. It is like watching a tv program that was continued.

Happpy driving!!

Now possibly you will have time to police up the parts we have been going back and forth about over the last few months.

TractormanBill

 

Glad you sorted it out Ilya. Looking forward to seeing it back in the truck and going. I'll be discussing this with my engine builder too. Stu

 

That's real good news, one step closer!!

 

Congratulations! Always nice to find the solution, even if it did drive you crazy for a while. I hope the engine builder compensated you for your headaches or has a least learned the lesson. Some of us just don't like to read directions sometimes...

 

Hmmm, kinda what I thought....glad it wasn't anything more serious! Too bad you had to go through all of the wondering and worrying.
That motor should last forever....get it together and drive it!

 

Not to this interesting thread, but anyone know or speculate why Ford broke from normal industry standard protocol when they went into the OHV engines? They went back std with small blocks and the FE series.

 

Thanks for reporting your findings.

 

Not exactly on subject, but I look at this picture, I do some work around cranes here and there, and I see "LINKBELT FMC" on that cam gear.
I feel a cross between work and play...I think I need to find a councelor...I don't like it.
On a positive note glad you figured it out!
Another classic case of...if you want to done right, do it yourself.
That's just my excuse for not being able to pay anyone to do anything for me..
Hang in there by the towel tag Ilya! You are almost there buddy!

 

Hey Ilya,
Let me show my ignorance (happens a lot on here).
I look at that picture of the timing gear & I don't see a thing about timing
marks lining up. What are you looking at on that pic that jumps out at you? Just watching & learning....

Glad you found the problem!

Ben in Austin

 

Ben, get your glasses and you can see a small circle on the top gear that the builder ligned up with the circle on the lower gear which lots of engines use this method.

I'm looking in my 49-51 repair manual and it shows an H & M series 6 cylinder engines that were used,

Both of them have the crank and cam bear meshed with no chain. Of course the marks on them line up like the engine builder tired to assemble yours with the marks together.

What 6 cyl. used the chain?

TractormanBill

 

Ben,
A camshaft has to be in coordinated time with the crankshaft rotation so the valves open and close at the proper time compared to their piston position. The cam usually is designed to turn at 1/2 the crankshaft speed. To drive the camshaft and keep it in proper time a timing chain or toothed belt or gears are used.
To orient the cam drive at the proper relationship some sort of marker is used. If you look closely at the picture above you will see a "o" stamped on the crank gear and the cam gear (harder to see on the cam gear, look on the tooth below the "e" in link belt)
On most engines the two marks are aligned with each other when the cam gear is bolted in place to set the timing. I suspect Ford in his famous frugality (read CHEAP!) decided to use a gear already in inventory from and marked for another engine on this motor. To properly time this engine the timing marks must be offset by 7 teeth. If you don't carefully read the manual, most mechanics would set the marks in alignment, as done on almost all other engines.
Two lessons to be learned: 1. Always read the directions, no matter how many times you've done something before. 2. Ford often bucked the system to use parts already in inventory to save money.

 

YEA !!!!! Truely a Happy 4th for Ilya .Good for you . Perserverance pays off .

 

Thanks Guys - I now see the faint circles that line up. I've seen timing marks before - but they were lines & I was looking while shining a timing light on them. I continue my truck education daily on here!

Ben in Austin

 

Still do not have an answer to the 6 cyl. question as to which one used a chain on the timing gears?

I'm looking in my 49-51 repair manual and it shows an H & M series 6 cylinder engines that were used and both have the gears meshing with no chain.

By the way I do not have a 6 cyl. in my truck but am just interested.

TractormanBill