#41
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Quote:
Fluid flow engineering and head gasket holes answers the question for me. There's a "whitepaper" on these 4 and 5 cylinder IDI engines that says something like 40 gallons per minute gets pumped through the system (I'll find it, I think it's even on this site) so, with the somewhat larger holes near the 4th and 5th cylinder that's enough flow to move a lot of water through the system. I was thinking more in a low flow scenario, where the water's slowly pumped into the block and then goes right back out the hole in the head, and that's not going to happen. Maybe at idle but even then it's doubtful. I'll inspect the QSW plumbing tomorrow and see exactly how it's plumbed. Just a thought on a solution to keeping the thermostat wide open: install a pushrod in the tstat cover (on my version it's an elbow) so you could manually force the tstat to stay forced against the block.
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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 |
#42
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Oil squirters in place
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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 |
#43
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Rings and bearings in.
You can see I really should have had this bored to the next oversized piston. This is the first engine I've ever painted! It's getting it's second vinegar soak which will be it's last.
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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 |
#44
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Old head, still very useable I just need to get that frozen glow plug out. I may just have the machine shop do it when I eventually get it rebuilt.
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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 |
#45
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Rebuilt head I purchased years ago with a few missing cups. I'll be installing it tomorrow.
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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 |
#46
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Waxstat/thermostat for oil cooler.
This is not working, part number 035 115 429. I know it's not on the D24T but it's on several turbo Audi's. I'm looking for one. Heated to 250 in the oven, even though the thermometer says less, it read 250 when I opened the door. That's 10-40 oil in my saucepan! It's hard to see but the plunger hasn't moved.
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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 |
#47
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Head gasket holes identified. Thanks for your knowledge v8volvo.
It's very visible what the head gasket is doing to the water flow. Your issue of overheating in subzero temps is another item.
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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 |
#48
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Excellent block heater but not able to find that one. I've been using Kats for years but this one was much better. It was extremely hard to remove and turns out I may not have had to, it was just a broken wire at the plug. The frost plug hole is clean now. An interesting engineering feat is that frost plug is cast with a bulge so there's plenty of room for the block heater and no concern about it hitting the cylinder wall, excellent idea. I don't remember if it was that way on the 2.4.
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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 |
#49
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End of day 3.
Head installed, valves adjusted, block heater, timing belt, oil pump, etc. Whoever rebuilt this head really ground the valves down, I've had to order some spacer disks/pucks between 3.90 and 4.25. There adjusted as close as I can get them and I'll run the engine on the stand in the next few days just to see how it sounds. Ready for the IP tomorrow! I temporarily installed the flywheel from the automatic so I can run it on the stand and will put on the big heavy diesel flywheel when I put it in the car.
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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; 05-24-2020 at 09:54 PM. |
#50
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It runs!!
I'll post a few questions tomorrow.
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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 |
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