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Going to be disassembling the 200 this weekend. Pictures to follow.
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Nov 3, 2017 12:09
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So, to improve the performance of the MC1 in the Doom Wagon, I'm going to swap out the anemic K26 for a K24 and add a MC2 WUR which references the intake manifold for regulating fuel pressure. Should give it a little more oomph.
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Nov 3, 2017 21:11
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Got her cleaned up for C&O car show. 
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Nov 5, 2017 19:13
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Ran into an issue where the engine would stumble at idle on the way home. Got home and thought I had a bad injector, so I disassembled and flow tested all the injectors: After putting it back together, issue remained...until I unplugged the O2 sensor line and it would smooth out, but would backfire occasionally at partial throttle. Confirmed my other suspicion  Cracked exhaust manifold pulling extra oxygen in causing the O2 sensor to realize there's extra O2 in the exhaust.
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Nov 7, 2017 01:22
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CommieGIR posted:Ran into an issue where the engine would stumble at idle on the way home. Got home and thought I had a bad injector, so I disassembled and flow tested all the injectors: You didn't happen to fill up at the QT on Sugarloaf and 316 just before did you? Both a coworker and myself have experienced killed injectors after getting 93 from there.
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Nov 7, 2017 14:37
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Crunchy Black posted:You didn't happen to fill up at the QT on Sugarloaf and 316 just before did you? Both a coworker and myself have experienced killed injectors after getting 93 from there. Nah, the injector was me being misled, CIS injectors are hard to kill too since they are just spring loaded. It was losing cylinder backpressure due to the crack in the exhaust manifold. CommieGIR fucked around with this message at 18:23 on Nov 7, 2017 |
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Nov 7, 2017 18:17
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Saw this parked out behind the place I work and thought you may enjoy it. The owner has a couple Audis so I suspect he has plans to fix this one up when he gets the chance. 
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Nov 7, 2017 18:48
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That's a beautiful classic Ur Quattro. Probably very early model based on the Diff Lock display, quad headlamps, and the Euro bumpers. Wish I could afford a Ur Quattro 
CommieGIR fucked around with this message at 01:21 on Nov 8, 2017 |
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Nov 8, 2017 01:19
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Anti-Archive bump: Welp, checked over the engine block for the 200:  Well gently caress. The block will need help, but there's supposedly a 5000 Turbo in a junkyard in South Atlanta that I can salvage the block from and swap the internals with. I may try to braze and weld the block to save it considering how hard its going to be to find this stuff in the near future.  With the 3D modelling skills of my younger brother, I've 3D printed a replacement Shifter Boot bracket:   I've also been 3D printing Shifter bushings, and have them installed on two of my cars with great success so far. https://www.thingiverse.com/thing:2642240 https://www.thingiverse.com/thing:2558263
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Nov 13, 2017 20:06
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Enjoy a video of the possibilities that await you in 5 cylinder Valhalla https://www.youtube.com/watch?v=ouGEIA7ElbY
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Nov 17, 2017 14:32
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Finally got around to welding up the crack in the cast steel manifold. I headed the manifold prior to doing this:  While I was in there, I also replaced the hardware on the wastegate pipe 
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Nov 20, 2017 05:12
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TDI bug has bit me again, working on acquiring the parts to build a 2.5l TDI for the wagon.
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Nov 25, 2017 02:55
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CommieGIR posted:TDI bug has bit me again, working on acquiring the parts to build a 2.5l TDI for the wagon.
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Nov 25, 2017 15:25
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InitialDave posted:Deviant. Is that the V6 2.5, or the inline 5? Inline 5, basically the same one that came in the VW transporter.
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Nov 25, 2017 18:54
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Repaired the MAF wiring and replaced the alternator on the TDI today. Boy, is it way happier with the MAF plugged in.
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Nov 26, 2017 22:43
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Do you always leave the timing belt cover off? I'd be way too paranoid something could get in there and break it.
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Nov 26, 2017 23:05
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shy boy from chess club posted:Do you always leave the timing belt cover off? I'd be way too paranoid something could get in there and break it. It never had one, as this engine was pulled from a front end collision and the timing belt cover and accessory bracket was totally destroyed. I'd love to put a timing belt cover back on it, but its done 50,000 miles since it was overhauled with no issues.
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Nov 26, 2017 23:11
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Oh right on. Never found one in the junkyard? But yea you would have to have really bad luck for something to get up there and then get directly stuck between the belt and a pulley.
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Nov 26, 2017 23:18
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shy boy from chess club posted:Oh right on. Never found one in the junkyard? But yea you would have to have really bad luck for something to get up there and then get directly stuck between the belt and a pulley. There's one or two engines in the yard right now, good point. Its almost due for an oil change and timing belt/water pump change anyways.
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Nov 26, 2017 23:19
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shy boy from chess club posted:I'd be way too paranoid something could get in there and break it. 
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Nov 27, 2017 00:40
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So, took the 4000q Race Car to a car show today, then to a friend's shop and smoke tested the intake side to hopefully trace a boost leak. Found a vacuum leak: the wastegate housing has a broken stud and was leaking vacuum and causing the engine to buck under load. Accelerates much better. Also: picked up a chipped ECU for the race car, should be up to 285 crank horses
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Dec 4, 2017 00:08
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Picked up an AAN for the 90q
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Dec 5, 2017 04:26
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Here's the AAN! Stripped it down to inspect, its very clean and smooth. Good journals, pistons are gonna be cleaned and reinstalled So, the problem is the PO didn't return the timing belt tensioner bracket, so I'm going to work around that by using a 3B oil pump housing and water pump instead, as the 3B uses the water pump to set timing belt tension instead. So it'll have AAN COP, Wiring Harness, and ECU, but 3B timing belt setup.
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Dec 6, 2017 17:06
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CommieGIR posted:Here's the AAN! Stripped it down to inspect, its very clean and smooth. Good journals, pistons are gonna be cleaned and reinstalled I can't remember if it has something to do with the harmonic balancer or the oil pump, but 3B/7A and AAN/ABY/ADU have different bolt lengths for the main crank bolt. Just FYI.
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Dec 6, 2017 18:27
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afen posted:I can't remember if it has something to do with the harmonic balancer or the oil pump, but 3B/7A and AAN/ABY/ADU have different bolt lengths for the main crank bolt. Just FYI. That's fine, I'm reusing the crank bolt, but I'll verify the depth on the balancer before I install it. Thanks for the warning!
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Dec 6, 2017 18:30
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Progress on the 3BAAN   Tested the timing belt setup, it all lines up, and testing the V Belt harmonic balancer and it'll fit just fine, just had to remove the washer from the AAN Serpentine belt.
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Dec 8, 2017 01:17
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It snowed today in Atlanta: Good thing I came prepared with the right car   I'm part time employed as an engine builder now!   To be fair, the first engine is mine, but they have a need. Good supplementary income to my day job. And I enjoy it. CommieGIR fucked around with this message at 02:28 on Dec 9, 2017 |
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Dec 9, 2017 02:21
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Please keep posting. Old Audis are rad.
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Dec 9, 2017 05:34
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Wrar posted:Please keep posting. Old Audis are rad. 
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Dec 9, 2017 17:49
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Merry Christmas from the VAG Farm:  The 90 is going this week to the shop to start the motor swap.
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Dec 9, 2017 22:12
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Stripped some parts off the 3B for the 3BAAN build   Previous owner really did care for the car, tons of aftermarket parts including 034 Coolant Hoses, Intake spacer, and Samco air hoses as well. Unfortunately, the intake spacer is known for leaking, so that won't go on the new car. CommieGIR fucked around with this message at 23:15 on Dec 10, 2017 |
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Dec 10, 2017 22:48
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CommieGIR posted:
I know it's old and all but I didn't know ECU's came in 2RU,
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Dec 11, 2017 08:31
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Don Dongington posted:I know it's old and all but I didn't know ECU's came in 2RU, Only makes sense, right? Might as well standardize ECU sizes.
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Dec 11, 2017 14:43
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So, my friend brought in a UrS4 that he had sold to one of his employees, but said employee tried doing burnouts, now compression levels looks like this: 1 - 70 PSI 2 - 120 PSI 3 - 60 PSI 4 - 30 PSI 5 - 0 PSI Not good. 0 means either hole in piston or valve. Engine still ran, amazingly, but rough. I'll have more photos tomorrow, but we did pull the head, and sure enough a valve is cracked and its chewed through one corner of the valve seat as well. However, pistons look good and clean, and block looks fine. The head gasket was compromised too, there was burn marks between #4 and #5 which no doubt exasperate the issue. We can save it. Didn't get photos because it was closing time, and I only get 3 hours or so at the shop a day since I'm exclusively doing engine builds and 5 cylinder stuff, and since I still have my full time Systems/Network Admin job as well.  Lessons from this? 1. Audi 5 cylinders were build and deliver their best power below 5500 RPMs. 2. Running a K24, or in this case an RS2 K24, means you get your best power around 3500-4500 RPMs, after that its just not delivering anymore boost 3. Don't do burn outs with a Quattro. That's stupid. There is a reason most guys burning rubber with a Quattro are doing donuts: Quattro can do donuts all day, burnouts just isn't its thing, its made to deliver the best grip from launch, its not conducive to burnouts. CommieGIR fucked around with this message at 04:21 on Dec 13, 2017 |
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Dec 13, 2017 04:08
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Valve failure 
CommieGIR fucked around with this message at 05:03 on Dec 14, 2017 |
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Dec 14, 2017 05:00
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Good god. Any chance of saving the head?
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Dec 14, 2017 06:46
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Yu-Gi-Ho! posted:Good god. Yes, but not for this build. Machine shop will have to remove valves and valve seats, TIG backfill the hole, then re-cut the valve seat
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Dec 14, 2017 11:20
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CommieGIR posted:Stripped some parts off the 3B for the 3BAAN build ... funny question. Is there a different water manifold that can go there, and would it be possible to make like, a no-go box (like, "this is a hard limit don't put manifold here")? I've had the urge for years to do a GTO-style twin plenum manifold for the 20V I5, and I'm kind of looking for things to try casting that would be actual parts.
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Dec 17, 2017 21:30
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mekilljoydammit posted:... funny question. Is there a different water manifold that can go there, and would it be possible to make like, a no-go box (like, "this is a hard limit don't put manifold here")? I've had the urge for years to do a GTO-style twin plenum manifold for the 20V I5, and I'm kind of looking for things to try casting that would be actual parts. There are two distinct OEM water manifolds: The 3B and AAN styles: AAN:  3B:  Frankly, you are fine as long as you are not routing the manifolds near the exhaust side. Recognize as well: The 7A head basically has the same setup, but no water manifold, just a single flange that goes to the center of the head. You can machine and open up the head to use a 3B or AAN manifold, and some people are even more nuts and have machined flanges for their 10vTs:  Now, by No-Go box, you mean an area to avoid putting the coolant flange? In other news: I've discovered the parts 200 was heavily modded: RS2 Turbo Chipped ECU (2 Bar, RS2 timing table) 034/Samco Hoses CommieGIR fucked around with this message at 03:04 on Dec 18, 2017 |
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Dec 18, 2017 02:55
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CommieGIR posted:Now, by No-Go box, you mean an area to avoid putting the coolant flange? Ah, the AAN manifold looks more suited in some ways. What I mean is... like, a hypothetical box that could contain an intake manifold without hitting anything important - hood, radiator, brake booster, stuff like that. Someone on grabcad actually did a model of the flange side, but it's not too useful to make a manifold that doesn't fit in the car, you know? This is at least partially a... stretching my reach to improve my ability to design and make stuff, if you get what I mean, I appreciate your indulgence.
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Dec 18, 2017 03:18
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