Help me figure out why cyl 1 has 0 compression….

[RCP Phx]

There's definitely something going on with the shimming and the rocker studs.

[TheVintageVw]

took a couple more pictures of the rockers...

[Chickensoup]

No way in hell those are set up right.
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-'85 c10 5.3 LS, 222 cam, long tubes, x pipe, 3 inch spin tech's
-'05 B5.5 TDI Wagon 17in sport rims ;EGR + BSM + ASV Delete, Stage-2 Tune, straight pipe
'65 Tourist Delivery Build
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[QRP]

Note to self . . . Don't roll motor around in a sand box before disassembling.

[sjbartnik]

What's going on in the circled area? Try and get a better pic - original pic is too low res but looks like a divot and maybe a crack between the valve seats?

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1965 Volkswagen 1500 Variant S
2000 Kawasaki W650

[TheVintageVw]

Good eye. Its def chipped. I dont think it crosses into the valve seat. Will clean it up and see....

[dogmeat]

its almost certainly the rings and/or cylinder and nothing to do with the valves. the proof of that would be to see if there is a valve that is really loose in the guide. especially the intake guide.

3 ways to get oil in the cylinder are worn out guide, worn rings/ barrel, or a crack (the crack has to enter an oil area).

feel the outer edge of the rings. is there any feathering? does it feel like a step? even a tiny one. if so that a sign of worn out. measure the side clearance and end gaps on the rings

also, look at the forward edge of the piston. see how clean it looks. to me that indicates burning lean due to an air leak. my bet is it was constantly overheating that cylinder and took the temper out of the rings

[modok]

When are we going to check the ring gap?
Check for light tight?
Measure the cylinder?

[oprn]

That isn't gas in the cylinder and head, that's pure oil. That engine must have been putting out a blue smoke screen where ever it went. Unless of course that plug was fouled up so bad it was not firing anymore.

Show us the spark plugs.
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[VW_Jimbo]

I vote for a full rebuild. Stop looking at it. The pistons show clearly that the engine overheated. I bet that happened due to a lack of air flow past the cylinders, due to the dirt dam! Seen that one a few times.

Your best bet is to tear it all down. Send the case out to get inspected for cracks and to be sure the lifters bores are still good. Then get it aligned bored and rebuild it.

And when you do go through the mud, be sure to rinse the engine really good when you get back home!
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Jimbo

There is never enough time to do it right the first time, but all the time necessary the second time!

[KEGZ]

@OP - did you run the engine? Was there obvious blow-by?

[AlteWagen]

In the other thread you said fuel was pouring out the booster on the 1/2 side, for how long? If running for any amount of time you are going to fuel wash that cylinder and eventually loose compression.

The heads are mexican vw castings and the lack of burnt oil in the rocker area doesnt look overheated much. If you dont clearance the stock rocker when running the swivel foot adjuster you have to space the shit out of the rockers to get some adjustability. That scoring on the cylinder doesnt help. The amount of oil in the cylinder shows why you have low compression, if you cant control oil no way to hold pressure.
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