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Registered User
Join Date: May 2013
Posts: 9
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Flywheel installation
I recently picked up a 1987 944 2.5 Base which had not been running for some time, after going through the normal checks, got it running. When checking the timing I had noticed that the flywheel timing mark (groove on flywheel) was off by some 30 or 40 degrees. Now I did check the timing mark at the distributor for DTC, balance roller, etc were dead on, cold compression check (142-44 psi) and number 1 piston was all the way up, prior to starting. My only conclusion is that at some point in the past, someone had misaligned/installed the flywheel. Have done clutches on these cars in the past, I tend to remember that the flywheel had a dowel and can only be installed in one position and that would put the flywheel time mark dead on in the inspection port-how can this one be off that much? (And run?) Anyone have an idea before I go through the effort of realignment?
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05-24-2013, 09:05 AM
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944 addict
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I wonder if this flywheel is off a different model, i.e., 968, 944S, etc. Don't know if that makes a difference or not but it's my first thought. Beyond that, is it possible that another manufacturer's flywheel has been installed, i.e. BMW, AUDI, VW, etc.
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3 944's, 2 Boxsters and one Caman S, and now one 951 turbo. Really miss the Cayman. Some people try to turn back their "odometers." Not me. I want people to know 'why' I look this way. I've traveled a long way and some of the roads weren't paved. |
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05-24-2013, 10:46 AM
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Registered User
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Grove on flywheel....... by that do you mean the grove that should be at the bottom when you are at TDC, the one that can be viewed fwd of the starter?
The early cars don't have that one, so maybe the flywheel is from one. Maybe you are seeing some other kind of notch.... I put an 84 flywheel in my 86, so I can only check TDC by the OT viewed from the upper part of the bellhousing.
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1986 944 NA Sapphire Metallic http://944porsche.blogspot.ca/ |
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05-24-2013, 05:24 PM
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If it ain't broke, don't fix it!!!
Is it running like it should? if it is leave it alone, make a mental note and fix/correct (whatever) the next time you pull it apart to replace the clutch. |
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05-25-2013, 05:50 AM
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White and Nerdy
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It could be you are seeing a ding from something else, and not the real mark?
The flywheel has a steel stud passing past the reference sensor, if something were array, I doubt it'd run...
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Shadilay. |
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05-25-2013, 02:23 PM
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Frankly my dear....
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Quote:
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Porsche - accept no substitute Blue 1999 Boxster - Brief encounter! Black 1988 944S - Ongoing project Black 1987 944S - Gone but not forgotten Metallic Black 1980 924 - Those were the days.... Red 1979 924 - Hmm Minerva blue 1979 924 - Where it all began! |
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05-25-2013, 03:28 PM
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Registered User
Join Date: May 2013
Posts: 9
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It has to be an aftermarket flywheel-can't find the OT mark anywhere. It's definitely a machine cut, not something stray. I never keep these cars, just like to sort them out and move on-it's all about the puzzle and then sell it to buy another (and parts to fix). The wife has me on a strict 6 car limit and won't let me have any of her money. I've rebuilt at least 8 of these motors and have done over a dozen clutches-hate leaving anything that I don't feel is right. Damned thing does runs well but I'll need to explain that to the next owner. Waiting for new cross drilled disc's and ceramic pads and its done-on to the next project! Thanks guys!
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05-26-2013, 12:28 PM
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Porsche 944 NA
1986 Porsche 951
1986 Porsche 944 NA
Copenhagen Blue
