| Author |
Message |
Dirk Rabenschwanz (Dirk)
New member
Username: Dirk
Post Number: 42
Registered: 4-2001
| | Posted on Friday, October 11, 2002 - 1:58 pm: | |
AF 3 is the mark for timing at idle.
The US-QVs has 3 degrees late at idle.
This is the reason, for my opinion, why some QVs
has a little firing problem at idle.
The 3 degree late firing works only fine if
all injection parts are nearly perfect.
If the injectors are a little bad its a problem to fire up the gas at these timing.
The US-cars has these •••• timing only for the emissions.
The euro cars has 12 degrees before at idle.
Dirk
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Verell Boaen (Verell)
Member
Username: Verell
Post Number: 404
Registered: 5-2001
| | Posted on Friday, October 11, 2002 - 10:39 am: | |
Tim,
See this thread for a photo of my '80 Euro 308's PM1-4 mark:
http://server.ferrarichat.com/~ferrari/ferrarichat.com/discus/messages/112/129380.html
Forgot to suggest using Binder Clips when re-installing belts. See:
http://server.ferrarichat.com/~ferrari/ferrarichat.com/discus/messages/112/102062.html
Some tips on Cam mark alignment:
http://server.ferrarichat.com/~ferrari/ferrarichat.com/discus/messages/112/107771.html
Craig Dewey's TDC mark was between the PM & the 1-4!:
http://server.ferrarichat.com/~ferrari/ferrarichat.com/discus/messages/112/28013.html
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billy bob (Fatbillybob)
Junior Member
Username: Fatbillybob
Post Number: 58
Registered: 8-2002
| | Posted on Thursday, October 10, 2002 - 12:01 am: | |
The cams turn 50% of the crank so that is why you the marks on the cams seem to line up whether on pm1-4 or af3. The way to set the static timing up is to only rotate the motor in the driven direction and bring up pm14. The set the cams to line up. You only go to the other numbers (except pm58) when adjusting/testing distributor timing. |
Steve Magnusson (91tr)
Intermediate Member
Username: 91tr
Post Number: 1115
Registered: 1-2001
| | Posted on Wednesday, October 09, 2002 - 4:00 pm: | |
Bob -- You can edit your posts by clicking on the little notepad in the upper right corner of your messages (within 1 hour of posting). I saw you fixed the notation to ATDC in the second post, but do you literally mean "6 minutes" ATDC (I'd have guessed 3 deg ATDC). |
Robert Moore (Nail_it)
New member
Username: Nail_it
Post Number: 18
Registered: 6-2002
| | Posted on Wednesday, October 09, 2002 - 3:41 pm: | |
AF3 is a ignition timing mark = 6'ATDC
As you turn the flywheel you should see five marking for each bank PM 1-4 and PM 5-8
A5 34' / AF 16' / +6' / PM 1-4 / AF 3
All four cams should line up on the PM 1-4 mark. Only turn the flywheel CCW to avoid loosening timing belts.
Bob |
Robert Moore (Nail_it)
New member
Username: Nail_it
Post Number: 17
Registered: 6-2002
| | Posted on Wednesday, October 09, 2002 - 3:38 pm: | |
AF3 is a ignition timing mark = 6'BTDC
As you turn the flywheel you should see five marking for each bank PM 1-4 and PM 5-8
A5 34' / AF 16' / +6' / PM 1-4 / AF 3
All four cams should line up on the PM 1-4 mark. Only turn the flywheel CCW to avoid loosening timing belts.
Bob |
Steve Magnusson (91tr)
Intermediate Member
Username: 91tr
Post Number: 1114
Registered: 1-2001
| | Posted on Wednesday, October 09, 2002 - 3:20 pm: | |
The slash after the 4 is the T.D.C. mark for cylinder #1.
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Timothy Fulmer (Tf308)
New member
Username: Tf308
Post Number: 5
Registered: 5-2002
| | Posted on Wednesday, October 09, 2002 - 3:03 pm: | |
Looking through the inspection cover I see:
PM1-4| |AF3
Which horizontal slash is the TDC? There is such a small distance (maybe .5 inch) between the 2 that the cams still appear to be lined up. Which is the correct mark and what does AF3 mean? |