123 Install Today - GETTING CLOSER..., PROGRESS: BAD MPS |
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123 Install Today - GETTING CLOSER..., PROGRESS: BAD MPS |
FlacaProductions |
Dec 14 2023, 09:50 AM
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#1
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Senior Member Group: Members Posts: 1,733 Joined: 24-November 17 From: LA Member No.: 21,628 Region Association: Southern California |
74 2.0 D-Jet
Heading to the garage now to start the install and my main, unresolved-in-my-brain question is if i need to hook up the vacuum line that is on my current stock distributor, on the 123. |
technicalninja |
Dec 20 2023, 04:22 PM
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#2
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Senior Member Group: Members Posts: 1,827 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
We need 33-39 degrees advance at high-speed full load. This number is dependent on cylinder head design and the use of quench. The more efficient the engine the less total advance we need. Super common is the number 37... I believe this is the red mark on most of the fans on T4s that you adjust timing too at 3K rpm. They're having you set MAX timing at MAX load this way. Don't the instructions tell you to disconnect vacuum hoses and plug? @technicalninja The red line is set for 27*, not 37* on a stock system. Its common for carbs to go up to 32* I think that's where I have my 2.3 timed. By 37* you are likely over advanced. But stock for a 1.7 or 2.0 is 27* #3000 RPM. Zach I stand corrected. Thanks, VaccaRabite! Just verified I'm not spouting trash regarding ignition requirements. I'm not, those advance numbers are correct for water cooled stuff. Air cooled stuff is sometimes different in ways that I didn't expect. I apologize if I overstepped... I do believe I answered the intitial questions that started this thread! |
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