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Vibration Damper misaligned (in fact whole engine misaligned!!!!! :-o)
Hi
I’ve had a summer project of getting a 964 back on the road. I’ve been searching and getting help from pervious post on this forum, but now I got a problem I can seem to find an answer to! Today I was reinstalling the cylinder heads and camshaft housing when I notice that aligning the “Z1” grove on the vibration damper did not lead to number one and four cylinders being TDC. In fact the “Z1” mark directly up left cylinders 2 and 5 TDC! The best I can come up with is that the vibration damper has been taken apart some time in the past and put back together misaligned. Question is why would someone take the damper to bits? and would it be ok to simply unbolt the damper and realign it? Thanks Sam |
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08-21-2011, 12:45 PM
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After a bit more research I can't find any reason why I couldn't undo the 10 bolts in the middle of the pulley and reattach it back correctly. Does any one know if there is a more complicated balancing procedure?
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08-22-2011, 02:25 AM
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Registered
Join Date: Nov 2001
Location: Denver
Posts: 9,751
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Pretty sure the crank is indexed so the center part will only go on one way but I also thought the outer was only possible to install one way.
Might as well try it. |
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08-22-2011, 06:10 AM
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There is a pin that means you can only put the pulley back on the crank in one way. However there is a ring of ten bolts as shown in this photo:
 As the pulley doesn’t align I’m assuming that if you undo those bolts you can spin the pull around. Although all I can find is a note in the Bentley manual saying don’t undo these nuts! After taking a closer look none of the notches line up exactly with top dead centre they all seem to be about 30deg out. S |
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08-22-2011, 06:45 AM
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