Technical 1978 124 Project

[smahaley]

Sometimes you can swap some of your existing shims around to reduce the number of shims you have to buy.

One way, having measured your valve clearances, is to remove all the shims, measure them and see if you can indeed swap some around. The cam lobes should be fine operating the valve buckets (followers) with the shims removed, when just turning over the engine manually using a wrench.

However, a really smart person would probably have measured each shim before assembling the head and then he'd know which size shim was installed on each valve and could determine if any could be swapped around before he removed them....

(lmao) a really smart person…. I noted TWO of the shim numbers before installing and then just lost my way, so….

I’ll pull them each and note and see about swapping….

 

[smahaley]

Ok: I will have to buy the little tool to hold the buckets / valves down. I’ve tried some things I have and nothing works. Meanwhile, I’m not sure what this is about:

That looks like a crankshaft pulley (although mine has 3 grooves to accomodate a deleted air pump assembly) and I have no memory of there having been an o-ring.

I do have a rubber o-ring that came in my gasket kit - this just seems weird to me (deeply scientific and often incorrect gut feeling).

 

[Slotman]

I had my crank pulley off 2 months ago and don't recall any "o" ring either..

 

[smahaley]

To remount the flywheel I had to build a box stand for the motor so I could take off the engine stand.
Question: torque spec for flywheel bolts is listed in Haynes as 58 ft lb, while in Pininfarina shop manual at 105 ft lb.

I’m thinking 105? Wildly different numbers…

 

[Slotman]

Could it be there's different size bolts for different years?
Just for fun I asked A.I. and it came back with 65 to 75 "typically " for a 78 further confusing things...to really mess things up in will go check my Chilton manual and add it to this post

 

[smahaley]

Could it be there's different size bolts for different years?
Just for fun I asked A.I. and it came back with 65 to 75 "typically " for a 78 further confusing things...to really mess things up in will go check my Chilton manual and add it to this post

Yeah I saw a post somewhere talking about 10 mm bolts taking something like 40 and 12 mm taking 60 or so - and these 6 bolts are 19mm! So I went toward 105… seemed like the correct setting and is aligned with Pininfarina…

The other fun bit on this step is that my friend removed the pressure plate without marking it. SO. I’ve looked all over it for a mark but, none seen - so I have just put it on in one of the 3 possible orientations… (shrugging my shoulders).

 

[Slotman]

Chiltons comes in at 61lbs for flywheel to crank bolts for a 78., on the pressure plate you have a clutch pilot tool for alignment correct?
Opps, see the pilot tool!