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| 87 Chevy Sprint Turbo; what a blast | |
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| Tweet Topic Started: Aug 31 2011, 09:22 PM (20,433 Views) | |
| Jittney | Feb 4 2012, 02:14 AM Post #121 |
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Anchorage 92 XFi
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T3ragtop's ignition coil came. Hans installed it. Spark at beginning and end. No start. Code 41. Suggested he check the repaired 3 prong connector to the pickup coil. Not sure the wires are solid. Picked up a logic probe and a better testing instructions for him. Mwebb's comment, 'it's just a car' comes to mind. Edited by Jittney, Feb 17 2012, 11:24 PM.
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| Jittney | Feb 18 2012, 12:06 AM Post #122 |
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Anchorage 92 XFi
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Found the problem. Been busy for two weeks, but that's another story. Tonight there was time and daylight...not to mention a decent temperature. Crank...check Belts spin...check Camshaft spins....check. Cannot see cap, much less the rotor...as usual. It's all tucked away under the innercooler. Take off innercooler and distributor cap Crank....no rotor spinning. Take off distributor. Crank....seeing the end of the camshaft spin. What's wrong? I just replaced the dist oring on a metro last week, so I was finally familiar with the setup. (never did it on my 94) This was different, but then again, it's a different car. I got a good light in there and thought I saw something out of place down in a crevasse. I fished out all 4 broken pieces. Ah....the light dawns. Having pursued electrical diagnosis...we find it's mechanical. There are no decent pictures of this, as I'll now call it.....the dark side of the distributor. Not in the sprint manual, or the turbo supplement, or online diagrams. It was not obvious....until now. One does not see what one is not looking for. A tapered quasi roll pin holds the piece in place, but it does not come out. Either it's pressed in by machine, or its peened out a bit. It's not simple....like a transmission roll pin. ![]() Edited by Jittney, Feb 18 2012, 07:40 AM.
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| Memphis metro | Feb 18 2012, 06:36 AM Post #123 |
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That would definately shut you down with the quickness. The only thing here puzzling me is why you saw a spark at all. |
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| fainya | Feb 18 2012, 09:38 AM Post #124 |
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Fainya
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Yes I have a distributor for sale but it does not match yours. If you send me the distributor I can rebuild it. Also send the broken parts. I may have an extra part, but will need to see your to match it up. The distributor I have has 2 mounting slots/adjuster holes. Yours has only one. The part you broke has an offset to it and the drive dogs that broke on you usually only break if you but them in 180 degrees out of alignment. As for the pin that holds the drive dog in place, it is a press fit. I have the equipment to remove the pin without bending the shaft. Phil & Ed gave you the right contact information for me. |
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| Memphis metro | Feb 18 2012, 09:55 AM Post #125 |
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I was thinking since she had pulled the distributor to replace the pickup coil it probably broke upon reinstallation. |
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| t3ragtop | Feb 18 2012, 10:08 AM Post #126 |
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Turbo3 and Twincam Tweaker
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the mk1 distributors had a fairly fragile driver link between the dizzy shaft and the end of the cam. stamped thin steel. that was beefed up to a cast and machined steel part on the mk2 variants. they're keyed so that they'll only enter the slot in the cam one way so that you can't insert the distributor 180* out. easy fix but the part is unobtainium as new. be aware that the turbo3 distributor is special, while i think that the particular part is shared with the normally aspirated mk1 g10. |
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| clarkdw | Feb 18 2012, 11:00 AM Post #127 |
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You can get the same effect by connecting and disconnecting the coil primary wire mechanically with the key in the on position. Charge up the coil and interrupt the power and you will get a spark from the collapsing field. Try to start, coil charges, release key, coil discharges. Edited by clarkdw, Feb 18 2012, 11:01 AM.
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| bogs | Feb 18 2012, 01:21 PM Post #128 |
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Duct tape heals all wounds
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I would never have seen that one coming
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| Memphis metro | Feb 18 2012, 01:35 PM Post #129 |
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Yeah I get that but was thinking she was seeing more of a spark than just the flick of the switch. That would only create a single spark. She definately had a pickup coil problem. It cant pickup what aint there to pickup!
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| Jittney | Feb 18 2012, 01:52 PM Post #130 |
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Anchorage 92 XFi
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He said the end was broken when he took it out. He didn't realize it was broken, because it reminded him of this drywall toggle (we have some downstairs). He thought maybe it flipped up inside the camshaft. Now he knows. ![]() He's going to send it to Texas for rebuild. |
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| Memphis metro | Feb 18 2012, 02:14 PM Post #131 |
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Can not the pin be driven out with a punch and replace the tang and rock on? It should drive out. Maybe a little tough but it should come out. If you set it up on the jaws of a vice with the proper size punch, you can remove it. Not really much left to rebuild, you have already replaced most of the parts. Finding the replacement tang is probably the hardest part. |
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| Jittney | Feb 18 2012, 03:43 PM Post #132 |
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Anchorage 92 XFi
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It is not a simple roll pin, blue rhino. I'd rather send it intact to someone. Someone who does not need me to pre-dis-assemble it. Cost wise, it's worth it to have fainya (team swift) do it. Hans will get a rebuild of his distributor including a new shaft seal, a new bearing and a new retaining pin for the drive gear. I also value fainya's opinion, since he rebuilds distributors all the time. As a machinist, he would probably be able to tell if it was metal failure, if it was snagged, if it came apart one piece at a time, if it was because the bearing was going out, if the bearing was going out because of someone using dinosaur oil, if there is probably still a piece in the car....etc. Meanwhile, Hans has my car, and I am totally enjoying hiking, biking and taking the bus to/from work. ![]() It's all good. Edit: fainya was so generous and donated so much time and parts to the cause, that in fairness, I cannot list a price. Edited by Jittney, Mar 8 2012, 12:10 AM.
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| Memphis metro | Feb 18 2012, 04:59 PM Post #133 |
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From looking at that picture above I can tell you the reason for failure of the drive tang. It is cheesy made!
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| Woodie | Feb 19 2012, 04:49 AM Post #134 |
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I did http://geometroforum.com/single/?p=606602&t=4487433 |
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| Wolf | Feb 21 2012, 01:11 AM Post #135 |
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Member
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As I mentioned earlier in this thread, the turbo distributor's centrifugal advance mechanism is junk and you'll often find them broken. I wouldn't be surprised if some part of that mechanism broke off and wedged the distributor shaft making the ears sheer off. I don't think that damage would occur as natural wear. Edited by Wolf, Feb 21 2012, 01:15 AM.
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