#21
|
|||
|
|||
Quote:
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#22
|
|||
|
|||
Quote:
I did a compression test before dismantling all the exterior bits today and it was pretty sad, around 280 psi average, but the engine has been sitting a long time. It did hold pressure so I think it will be ok. There was one potentially major problem, the #4 injector was burned up on the tip, I think the crush washer wasn't seated properly by the PO and it wasn't emitting diesel, so that cylinder was running dry for I don't know how long. It only had 50psi dry, but when I put oil in the cylinder it went up to 220. I'll be taking the head off tomorrow and see what's up. Stay tuned.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#23
|
|||
|
|||
Here's a partial answer about your thermostat/coolant flow questions:
In the 7xx series at least, the heater valve is always open, except when running max A/C. Might want to check that your tstat is the correct one. I would have thought that when fully opened, the block-off disc would completely close up the recirculation port-- isn't that what it's there for? Greenbook shows the disc should move 8mm min. (fully open) at 216degF (for stock 87degC tstat).
__________________
1985 744 gle d24t 1985 745 gle d24t |
#24
|
|||
|
|||
OK I see my misunderstanding of your question about blocking the recirc port.
__________________
1985 744 gle d24t 1985 745 gle d24t |
#25
|
|||
|
|||
Interesting question, right. I hope to get some feedback. There's no flow out of the back of the head/block. On the 1.6 in my '85 Jetta the heater core circuit is always open so there's always flow out the back of the block/head.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#26
|
|||
|
|||
Day 2 update.
Cylinder walls 1 through five in sequence. #4 is the problem, as stated earlier the injector for that cylinder was burned closed, ie. no fuel injected, so the piston was just going through the motions without any action. That's also the cylinder I snapped the glow plug head off, and still can't get it out. There's some rust on the walls but that's about it. The walls themselves look good and there's very little lip at the top where the rings finish their stroke. I'm just going to do a light hone and install new rings.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg Last edited by Nevadan; 05-22-2020 at 09:00 PM. |
#27
|
|||
|
|||
Head gasket and head. I'm convinced this engine was recently overhauled, recent in miles or hours not recent in days or years. That's a clean looking gasket. It's hard to see in the photo but there's only one small crack between the valves. I still need to get the frozen glow plug out of cylinder number 4 but the head is very useable.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#28
|
|||
|
|||
Indication of prior rebuild, punch marks on the rods and caps.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#29
|
|||
|
|||
Broken oil squirter in cylinder 1, I have one, I think I got them from Anders several years ago.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
#30
|
|||
|
|||
Vinegar soak! I'll leave the vinegar in the block overnight and flush it out tomorrow, will probably do one more soak tomorrow night. The block holds 3 quarts of water/vinegar.
__________________
J.D. in Reno 1958 Mercedes 180D (rebuilding now) 1985 VW Jetta 1.6TD 1985 Volvo 745 Wagon 2.4TD (sold but still maintain it) 1987 VW Quantum Syncro 2.2 (converting to 2.0TD) 1996 TDI Passat 1997 Chevy 3/4 ton 6.5TD 2006 V10 TDI Touareg |
|
|