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Registered
Join Date: Mar 2002
Location: So. Cali
Posts: 189
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TDC mark and timing
I did a search and could not find one with my problem -- I have a number of marks on pulley I believe six. Of which 4 a relatively close to each other (I gues 20 degrees) the two marks two the left are blue and red and the two marks to the right are both yellow.
Which one is TDC -- I timed it to the marks on left it is idleing kind of rough. I tried the markd to the right and the idle sped up?? This is right after a rebuild Thanks
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1978 911 3.0 fully rebuilt and for sale |
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07-27-2004, 06:40 PM
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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,748
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Z1 is TDC. Next to it on the right is BTDC. If it's your 3.0, that's marked 5 for 5 degrees BTDC. Time it to that mark with the vac hoses off.
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07-27-2004, 07:39 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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I believe the 3.0 engines used the same pulley as 2.4s and 2.7s, complete with leftover MFI mark 'FE' for setting injection pump timing! The complete set of marks are -- 'FE' [40° ATDC], 5° ATDC, Z1 [TDC], 30° BTDC, 35° BTDC, Z2, Z3 ...
Check and see if the following marks aren't what you see??? 
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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07-27-2004, 08:25 PM
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Registered
Join Date: Mar 2002
Location: So. Cali
Posts: 189
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Thats exactly how it looks -- Thanks for the huge help. By the way -- I finally have the car running. Once I adjust the clutch, I'm off
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1978 911 3.0 fully rebuilt and for sale |
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07-27-2004, 08:29 PM
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