S3 crankshaft sensors and flywheel position - Alfa Romeo Bulletin Board & Forums
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post #1 of 4 (permalink) Old 07-20-2019, 06:16 PM Thread Starter
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S3 crankshaft sensors and flywheel position

Question
I installed a rebuilt gearbox in my 1985 spider and after I had it bolted up, realized that I forgot to check the position of the flywheel when I reinstalled it.
One of six positions would be correct. I decided to go ahead and try to start the car before removing the gearbox and the clutch to check the flywheel.
Well, it started right up and idles smoothly. Revs up fine too.
Is it possible for a S3 to run if the flywheel is not in the correct position?
Am I just lucky? Still having trouble believing this.
Should I have bought a lottery ticket.
Logic tells me that if it were in one of the 5 incorrect positions, the car would not run. Agreed?

Thanks
Greg
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post #2 of 4 (permalink) Old 07-21-2019, 07:07 AM
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I believe you are correct. It can only go on one way that will allow the car to run. Don't bother buying a lottery ticket. You just won!
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Mike

'87 Quadrifoglio
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post #3 of 4 (permalink) Old 07-21-2019, 08:16 AM
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you installed a gearbox, but for that you don't/didn't remove the flywheel....
(or, did you, to get it resurfaced or something?)
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Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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post #4 of 4 (permalink) Old 07-21-2019, 09:43 AM Thread Starter
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Dom
That is true but while I was rebuilding the gear box, I also replaced the rear main seal, resurfaced the flywheel and installed a new clutch assembly.
New rear gear box mount, new exhaust hangers, new driveshaft donut and new parking brake cable.
Did not want to go back in there again even if i am planning to sell the car (1985) and keep my 1990.

Greg
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