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Thread: What's your biggest ever "screw up" while working on your SC?

  1. #1
    Join Date
    Dec 2015
    Location
    Daytona Beach, FL
    Posts
    225

    What's your biggest ever "screw up" while working on your SC?

    So today I had to fork out $650 to my mechanic to replace my entire intake manifold after I snapped off an EZ Out inside a broken off thermostat housing bolt. After I finished beating myself over the head for being so stupid as to mess up that bad, I got to wondering, could it get any worse? So I'm just curious, what's the biggest mistake you've made while working on your SC?

  2. #2
    Join Date
    Dec 2007
    Location
    Salem OR
    Posts
    6,981
    Right after I got my SC, I discovered the driver side motor mount had seen better days, and was no longer doing it's job. Pass side was still good.

    I got underneath and put a jack on that side of the engine to see if I could lift/tilt it far enough to get the old mount out/new one in. Didn't take long to figure out that if I'd simply removed the thru-bolt on the pass. side mount, it wouldn't have popped like a grape in the jacking process. Oh well...back to the parts store.

  3. #3
    Join Date
    May 2012
    Location
    Denver Area
    Posts
    843
    I almost ruined my timing chain cover thinking the "gasket" was going to come out. Turns out the 89-93 and 94-95 DON'T use the same gasket on the cover behind the balancer

  4. #4
    Join Date
    Apr 2002
    Location
    Imperial, MO (near St. Louis)
    Posts
    4,355
    Buying it instead of the '64 GTO I was supposed to go look at that day. But oh well.

  5. #5
    Join Date
    May 2004
    Location
    Va. Beach,Va.
    Posts
    7,072
    Forgetting to lock my hood pins, I didn't have a hood latch due to front mount intercooler and the fiberglass hood flew up destroying it and the windshield.....................................TWI CE....
    SCCOA Member #2406
    '94 SC AUTO - 2.3 Whipple
    '90 SC AUTO - Bone Stock
    http://www.sccoa.com/forums/garage_v..._vehicle&id=19

  6. #6
    Join Date
    Jan 2005
    Location
    Northern Cambria PA
    Posts
    1,639
    Quote Originally Posted by nickleman60 View Post
    Forgetting to lock my hood pins, I didn't have a hood latch due to front mount intercooler and the fiberglass hood flew up destroying it and the windshield.....................................TWI CE....
    Been there and done that lol

  7. #7
    Join Date
    May 2003
    Location
    Omaha, Nebraska
    Posts
    6,237
    Quote Originally Posted by nickleman60 View Post
    Forgetting to lock my hood pins, I didn't have a hood latch due to front mount intercooler and the fiberglass hood flew up destroying it and the windshield.....................................TWI CE....
    Did the same thing just once though. Also dropped a small socket head bolt in the intake. Had to pull the heads to find it.

    Ken

    93 SC Whipple powered 11.648 @ 119.6
    Twin Turbo, air intercooled..yet to see

  8. #8
    Join Date
    Apr 2002
    Location
    Greenville, IN
    Posts
    4,432
    I broke off the "well" for the knock sensor in a freshened up long block right as I was getting ready to drop it in the car. I ended up spending around 12hrs with my dremel tool carefully cutting out what was left enough to get the rest out without damaging the threads in the block. All that, and I ended up deleting the knock sensor later anyway! lol
    Matt Haub
    Shootouts: '09 SS 1st | '10 Mod1 2nd | '11 Bracket 3rd | '12 Bracket 1st | 2013 | '14 Bracket 3rd | 2015 | '16 Bracket 1st & Mod2 2nd | 2017 |
    Black '89 5spd - 281K miles, MPx, E85, Alky-Inj RWHP: ? RWTQ: ? Best 1/4mi:12.521, MPH:107.23mph
    35th Anniversary Auto 46k miles | Red '93 Auto 186k miles
    My Garage

  9. #9
    Join Date
    Jul 2002
    Location
    Boston, MA
    Posts
    7,450
    Doing a cam swap and not changing the oil coolant trashes the bearings. After rebuilding...
    Forgetting to put the cam bearing spacer on and having the cam walk and trash the new rebuilt motor.

    Do I get a trophy?

  10. #10
    Join Date
    Dec 2015
    Location
    Daytona Beach, FL
    Posts
    225
    Quote Originally Posted by ricardoa1 View Post
    Doing a cam swap and not changing the oil coolant trashes the bearings. After rebuilding...
    Forgetting to put the cam bearing spacer on and having the cam walk and trash the new rebuilt motor.

    Do I get a trophy?
    Good lord...yeah I think you win

  11. #11
    Join Date
    Apr 2002
    Location
    Milwaukee, Wisconsin
    Posts
    3,387

    my mess

    buying an engine and being told that for $ XXXX it would be up and running only to find out that the number is less than HALF of what I got into it now... oh well I can say I do got a one of a kind SC in my garage....Rich
    Too many cars,too little time to drive them. Anything less than 500 cubes is a small block. If you slow down in life you will get run over..

  12. #12
    Join Date
    Apr 2002
    Location
    St. Charles, MO
    Posts
    21,040
    I once had a new torque converter shipped via air freight from Lentech in Canada because my transmission shop identified it as the source of a whining noise (sounded like it was low on PS fluid). Over $1100 later the noise was still there, and ended up being the vacuum hose fell off the supercharger bypass valve. This is why I zip tie the ~~~~ out of every vacuum hose on the car now.

    David
    Last edited by David Neibert; 02-02-2019 at 11:36 AM.
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat.............10.597 @ 135.78

    My Garage

  13. #13
    Join Date
    Mar 2011
    Location
    SF, CA
    Posts
    224
    Not a SC but with my 302 in my tbird, I rebuilt the engine, mated it to the m5r2 trans, reinstalled the exhaust, and had it all ready to start up and set timing:

    As my teammate (lemons car) was priming the pump when the 10mm socket jbwelded to a long extension (worked for the last 3 rebuilds) we had used to engage the oil pump drive shaft, he dropped the @#$@#$#$ socket into the oil pan. I was cursing him all the way to the airport as I dropped him off. I drained the oil pan and did all sorts of fishing for it (even with a camera). I even pulled off the upper & lower intakes on the off chance it had made it into the valley. Eventually, I just disconnected everything and lifted the engine back out enough to pull the pan and get the stupid socket.

    A few years later, on my last rebuild, I had forgotten to put the little retaining ring around the same oil pump driveshaft. This prevents the oil pump driveshaft from going anywhere between the block and the pump. Under normal operation, this wouldn't have been an issue because the distributor will hold it in place. Well, as I was priming it again this time and had to restab the distributor, I accidentally lifted up unretained pump driveshaft and dropped it into the pan. At least this time I didn't both wasting any time trying to fish it out. I just went straight back to pulling the engine.

    Let that be a lesson to you: use the damn retaining ring and the proper drive shaft priming tool (it's one piece of metal and costs like $10) or potentially suffer the consequences.

  14. #14
    Last edited by Nettlesd; 01-31-2019 at 03:05 PM.
    SCCoA Member #247
    Hardcore TBU #5 (in tow)

  15. #15
    Join Date
    Nov 2012
    Location
    Canton, GA
    Posts
    223
    Because my first car was a Supercoupe, most of my mistakes were the kind of stupid things that new drivers do. For example, the first time I "changed" its oil, I replaced the oil filter (but forgot to drain the engine oil). I added 5 quarts of oil (on top of the 5 that was already there). Thankfully, I checked my dipstick before starting the car and saw it was WAY too full.

    I've snapped a lot of plastic trim pieces and mangled the crap out of my headliner (which needs to be replaced). I accidentally bent the cardboard backing as I removed it from my car (it's a moonroof, so it has narrow sides that bent easily).

    Probably the BIGGEST mistake I made was buying my Supercoupe from a redneck that drove it like he stole it (and had crashed it into a pole while hydroplaning on bald tires). Then I spent thousands of dollars replacing the fenders, bumper cover, doors, trunklid, wheels & used tires, motor mount, transmission, rear differential, axle half-shafts, coil springs (the car was lowered too close to the ground), accumulator ball, and repainted the whole car except the hood. It still needs a new windshield (it's cracked), new interior (it's ripped up and smells like cigarettes), new headlights (the corner ones are busted), new power steering pump (LOUD NOISES), the radiator fan doesn't always come on (it's almost overheated 3 times), and the A/C doesn't work (not sure if I'll fix it), and I still need to paint the hood (It's a Cervini hood that needs some fiberglass patches). It hasn't driven since spring 2015. It's almost roadworthy, so I'm kinda excited.

    It turns out for $3,000 I could have just bought a Supercoupe that looked ok and drove normally. Oh well
    I definitely SAVED this car, because nobody else would have been stupid enough to save an MN12 that needed this much work, even if it was a 5-speed

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