Timing Mark 1800cc 1978 spider
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psg
Timing Mark 1800cc 1978 spider
I cannot locate the timing mark on my engine pulley. I have a second engine out of the car and I found the mark easily as a couple of notches on the pulley. Did the italians use different types of marks? and please don't tell me it is painted on because this pulley has been repainted. psg
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TulsaSpider
- Posts: 1547
- Joined: Tue Apr 29, 2008 7:33 pm
- Your car is a: 1978 Spyder 124 2L
- Location: Tulsa, Ok
Re: Timing Mark 1800cc 1978 spider
no, it's a mark, maybe get a brighter flashlight?
1978 Spyder 1800 make that 2L! Finally making real progress!
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manoa matt
- Posts: 3442
- Joined: Thu Oct 26, 2006 4:28 pm
- Your car is a: 1978 Fiat 124 Spider 1800
- Location: Honolulu, Hawaii
Re: Timing Mark 1800cc 1978 spider
The mark was originally painted on either white or yellow. If the pully has been repainted the painted mark will not be visible, however the painted mark corresponds with either a notch or ridge in the pully face.
Turn the engine over by hand untill your cam pullys line up with their marks, then check your crank against the timing belt shield mark. If you don't see the mark on the crank pully, then turn it over again untill the cam pullys line up again.
The cam pullies turn over once for every two revolutions of the crank.
Turn the engine over by hand untill your cam pullys line up with their marks, then check your crank against the timing belt shield mark. If you don't see the mark on the crank pully, then turn it over again untill the cam pullys line up again.
The cam pullies turn over once for every two revolutions of the crank.
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psg
Re: Timing Mark 1800cc 1978 spider
found them and the brighter light did help. I guess my alternator after 57 years isn't putting out like it used to, oh well. psg
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psg
Re: Timing Mark 1800cc 1978 spider
I am stymied. I noticed your comment that the cams turn over once for two revs of the crank. Does that mean it would be possible to set the crank 180degrees off and not damage the valves because the valves are opening in the wrong order but right piston? I cannot get this engine to catch. I have spark at the plugs and fuel and I get nothing except twice a feeble sounding backfire through the carb. The timing mark lines up but the cam wheel marks are 180 degrees out. I was sure when I set this up I had the cams properly oriented to the flywheel but now that I have the yellow cover off I see the cam marks are not at the reference pointers when the timing mark is set. Advice and recommendation? psg
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ventura ace
Re: Timing Mark 1800cc 1978 spider
I believe Matt meant to say things a little differently. His last sentence is straightforward. The cam pulley's turn once for every 2 turns of the cranshaft.
If the cams are on their marks, then the crankshaft has to be on it's TDC, but not necessarily the other way around. So if the cranshaft is at TDC, and the cams are 180° out, this could be normal. Just rotate the cranshaft one more complete turn, and the cams will turn 180°, and hopefully end up at the marks. If not, remove the belt, put the pulleys on their marks (and the aux pulley pointing to about 1:00), and put the belt back on. Now, at this point your distributor rotor should be pointed pretty close to the #4 contact inside the dizzy cap (be sure to check inside the cap -- the inside contacts don't line up with the outside wiring on the cap). If not, then pull the distributor out and turn the rotor such that when it is reinstalled, it points to #4. You will be rotating the dizzy back and forth when trying to crank the car, to fine tune this part of the adjustment.
Have the cam pulleys been removed?? If yes, and if they were accidentally swapped, then the engine will not run, but will backfire and spit a lot of fuel back out of the carburetor. How do you tell if the cam pulleys are on the right cams? Well, if the dowel pin hole is straight up, then the timing hole should be pointing toward the center of the engine (and not toward the fender).
Good luck with it!
A
If the cams are on their marks, then the crankshaft has to be on it's TDC, but not necessarily the other way around. So if the cranshaft is at TDC, and the cams are 180° out, this could be normal. Just rotate the cranshaft one more complete turn, and the cams will turn 180°, and hopefully end up at the marks. If not, remove the belt, put the pulleys on their marks (and the aux pulley pointing to about 1:00), and put the belt back on. Now, at this point your distributor rotor should be pointed pretty close to the #4 contact inside the dizzy cap (be sure to check inside the cap -- the inside contacts don't line up with the outside wiring on the cap). If not, then pull the distributor out and turn the rotor such that when it is reinstalled, it points to #4. You will be rotating the dizzy back and forth when trying to crank the car, to fine tune this part of the adjustment.
Have the cam pulleys been removed?? If yes, and if they were accidentally swapped, then the engine will not run, but will backfire and spit a lot of fuel back out of the carburetor. How do you tell if the cam pulleys are on the right cams? Well, if the dowel pin hole is straight up, then the timing hole should be pointing toward the center of the engine (and not toward the fender).
Good luck with it!
A