Mondial 8 distributor cap orientation

The orientation in your picture seems to match the SPC figure:

ENGINE - GEARBOX AND SUPPORTS - Ricambi America, Inc.

but the wires could still be mixed up in the cap.

 

Turn flywheel in correct direction of rotation to timing mark PM 1-4. That corresponds to TDC on pistons 1 and 4. Check which one is on compression stroke (both valves closed and nowhere near opening) and that the distributor rotor/cap is in "fire" position for that cylinder. If you cannot figure out which one is on compression stroke (the other one is in transition from exhaust to intake stroke), put a rubber hose in the sparkplug hole and blow as you turn the fw and approach the tdc mark. The cyl that makes your cheeks bulge for the 160 degrees or so before you get to the timing mark is the one.

The wires should then be inserted into the cap following the firing order which is stamped on the motor someplace, don't remember where possibly valve cover. As long as one is correct as established by the TDC mark, and the others are in the correct sequence, you are good.

Repeat for other bank 5 and 8, there is a separate mark on the flywheel for those two.

There are many reasons why a motor will not start. But basically you need to check fuel (should be able to smell that), compression (easy to measure) and spark (see above for spark timing, visual test to see if there is actual discharge).

It's possible the cam belts were installed incorrectly in which case you may not be able to turn the motor through a full revolution. Good to find that out before you fire it up. Or the belts could be installed so the motor turns, the distributors are correct, but the valve timing is 180 degrees off on the cams (one full rotation of the cranks). There are marks on the timing gear that correspond to TDC marks on the flywheel and plenty of tutorials online as to how all this should be lined up.

Before installing motor check/replace the water pump and slave cyl. Also the a/c compressor if it's not working. A lot easier to do that now.

 

I use my CSI, compression stroke indicator, to find just that. Developed in a secret lab in Japan for many years. Battery not included in picture.
Works? Absolutely.
/Peter
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In reference to the PM 1-4 mark on the flywheel...where exactly is TDC? The P, the M the dash or?? It seemed to be a rather vague mark so I used a long screwdriver inserted through #1 spark plug hole and a dial gauge to determine when the piston was at TDC.

Brock

 

It is the vertical line symbol of the PM1-4 marking. Some example photos in this thread:

http://www.ferrarichat.com/forum/mondial/506595-flywheel-timing-markings.html

but the position of the vertical line symbol within the PM1-4 mark varies - sometimes at start, sometimes in middle, sometimes at end, etc..

 

Thanks Steve!

 

TDC does not necessarily mean compression. It could be at TDC on the exhaust stroke. You need to make sure it's on the compression stroke (ie that the valve timing and distributor spark are in sync). and it does not need to be exactly on the mark to figure out if the spark is pointed at the right cylinder.

Having said that if they were 180 degrees out and everything else was good, you would be getting some nice exhaust detonation as the spark ignited the unburned exhaust charge. And since the inlet is also just opening, you would probably blow your plenum off and destroy your air filter.

 

Are you sure you have the flywheel sensors plugged into the correct places? That too can cause exhaust detonation if they are switched up.....

Brock

 

Rear most bank 1-4 looks wrong as compared to my Qv.
Just for your info
On checking further it looks like there is some various versions, so check firing order against rotation of the rotor arm.