Re: alfa-digest V8 #210 - flywheel position

[AlfaNeely@domain.elided]

       The shops that balance engines put the marks where ever they want.  
They may or may not be in line with TDC.  However, EVERY part that was 
balanced will be marked with a similar mark.  Look on the back of the 
crankshaft flange for a mark to match that on the flywheel.  Or call the shop 
and ask them where the other mark is located.  Plus there should be a mark on 
the pressure plate, it you had it balanced with the engine.
       All four cylinder Alfa flywheels fit in any position prior to the 
electronically injected Alfas.  However, once an engine is balanced as a 
unit, then everything needs to be assembled the way it was balanced.  That is 
why the marks are there.  A good shop should be able to balance each 
component separately so they can fit in any position, however, most of them 
balance the assembly as a unit.  Therefore, you need to align the marks they 
left for you.
       As noted by Charles.Slayman in AD V8 #211, the magnetic trigger on the 
flywheel for the L Jetronic engines needs to be in the correct position, so 
those flywheels fit one way only.  On my 82 and 84 L Jetronic engines, I made 
sure to point out to the shop that balanced my engine the way the flywheel 
HAD to fit.  I checked to make sure the O's they marked for alignment were 
correct before I paid them.  Since the crank sensor moved to the harmonic 
balancer on the Motronic engines, the flywheel position may make no 
difference again.

       I have no idea why your shop and mine both used an O to indicate the 
alignment.  Are yours also painted white?  Maybe that is ona them thar trade 
secrets....

Ciao,
Russ Neely
Oklahoma City



In a message dated 11/07/2001 8:06:01 AM Central Standard Time, 
owner-alfa-digest@domain.elided writes:




> 
> Date: Tue, 6 Nov 2001 21:42:05 -0800
> From: "pi" <pi@domain.elided>
> Subject: flywheel position
> 
> 'Project Alfa' was on hold for awhile as I was waiting for the "economic
> boom" to catch up to me (I'm an airline mechanic). Well it doesn't look like
> the "boom" is ever going to get to me and the poor old Alfetta only has a
> few more months of life left in her so I'm putting 'Project Alfa' back
> together due to the need of having a car to get to work with.
> 
> Anyway - enough whining. I had the engine balanced before I put it together
> and all the marks are there for the flywheel and pressure plate but I can't
> remember how to align the flywheel with the crank. There's a big "O" stamped
> on the flywheel. Does this line up with #1 TDC or something like that?
> 
> this is a 1972 2 liter
> 
> Paul Irvine  - Antioch CA
> 72 Spider - 79 Sprint Veloce - 82 GTV6
> - ---------------------------------------------
> Project Alfa

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