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Join Date: Apr 2000
Location: San Francisco, CA
Posts: 610
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How To Adjust Timing & Mixture on Twin Plug Carrera 3.0 Engine?
How does one go about adjusting the timing on a twin plug Carrera 3.0 engine with an older Electromotive crankfire ignition system? My mechanic says the timing is too advanced. Also, he was going to adjust fuel mixture, but said he couldn't find the fuel mixture adjustment screw for the CIS injection system installed. Any reason why someone would remove it? Any other way to adjust the fuel mixture on a CIS car?
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05-14-2016, 10:48 PM
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,117
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What other kind of CIS do you have ?
He is scaring me...
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D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
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05-14-2016, 11:00 PM
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28 deg total advance (adjusted above 3000rpm) on my twin plug 3.0L
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Kent Olsen 72 911 SCT upgraded 3.0L McMinnville, Ore |
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05-15-2016, 08:36 AM
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Location: San Francisco, CA
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Quote:
Thanks Kent. Do you have crankfire ignition, so no distributor installed? If so, ho do you adjust your timing? |
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05-15-2016, 08:38 AM
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Sorry no, twin plug distributor
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Kent Olsen 72 911 SCT upgraded 3.0L McMinnville, Ore |
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05-15-2016, 11:04 AM
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Registered
Join Date: Apr 2008
Location: Miami
Posts: 961
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Go here and look for the model you have.
Manuals and Technical Docs - Electromotive I have been using the old HPX system for a few years. Turn a few knobs and voila, timing adjusted. I also check with a timing light as it is difficult to be precise on the printed numbers. As for the mixture, can you take a picture of the engine bay or fuel distributer?
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1979 SC, Slant nose wide-body cab conversion. AEM Infinity EFI, COP, supercharged! |
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05-15-2016, 11:46 AM
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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dyno
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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05-15-2016, 08:50 PM
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Registered
Join Date: Apr 2007
Location: I live on the road, I just stay here sometimes...
Posts: 7,104
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Quote:
What compression are you running? (We are about to fire my 10.5:1 3.0 up for the first time )
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73 RSR replica (soon for sale) SOLD - 928 5 speed with phone dials and Pasha seats SOLD - 914 wide body hot rod My 73RSR build http://forums.pelicanparts.com/porsche-911-technical-forum/893954-saving-73-crusher-again.html |
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05-16-2016, 03:28 AM
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Chevy
1972 Porsche 911T
Classic Mini
