 123 Distributor, W/dual 40 Webbers Timing? suggestions?, Setting up the timing .new 123 tune distributor |
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| 914lasvegas |
 Jan 31 2021, 07:45 AM
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#1
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Newbie  Group: Members Posts: 4 Joined: 18-November 20 From: The LasVegas Member No.: 24,903 Region Association: None  |
Getting ready to install My new 123 tune distributor with Bluetooth . Not sure where to set the timing for my particular application . Hoping for some suggestions.
Motor is A freshly rebuilt 1.8 from 1974 914 Dual Weber. 40's IDF carburetors. no vac Motor is installed on a 1965 beetle (baja) BIG tires. I don't know if the cam was changed . I do know the motor has new heads on it . But I don't know anything about them. Besides the 123 tune I also bought a new set of wires and a Bosch blue. What should I set the rev limiter at? Any other suggestions regarding my install ? Any advice would be appreciated . I am a green newbee. Thank you .Stewart |
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Replies(1 - 4)
| 123ignitionusa |
Jan 31 2021, 02:45 PM
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#2
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Member Group: Members Posts: 62 Joined: 22-January 16 From: Ohio Member No.: 19,587 Region Association: North East States |
Stewart
Always stay on the conservative side to avoid to much advance and pinging which can damage your engine. The curve I sent you depends on you having a static time. From research on this forum that looks to be around 6 degrees When you add that into the figures for the curve it equals actual timing at the crank. Also I would set the rev limit to 6500 maybe 7000 if you can control your foot. See the underlined link below. 009 distributor curve w/no vacuum this is found in the PC programmable TUNE program. The alternative to this is to set number 1 cylinder to TDC (no static advance) program in exactly what you would like. Start by taking the degrees of advance in the link and add 6 deg to each value. 11 instead of 5 @ 500 rpm 11 instead of 5 @ 1600 rpm 27 instead of 21 @ 2600 rpm - this is all in advance 27 instead of 21 @ 8000 rpm Hope this helps Ed Found this on another thread - see attachment Attached thumbnail(s) 
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| 914lasvegas |
Feb 2 2021, 11:08 AM
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#3
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Newbie Group: Members Posts: 4 Joined: 18-November 20 From: The LasVegas Member No.: 24,903 Region Association: None |
Thank you, (IMG:style_emoticons/default/driving.gif)
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| Mark Henry |
Feb 2 2021, 01:32 PM
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#4
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Whatever gives you 800-900 RPM AT 8 degrees (7.5) BTDC and full advance 3000 rpm 28 degrees BTDC. So really it only gives you 20 degrees of mechanical advance.
I wouldn't exceed 28 degrees of total advance, but I'd play with any curve that stays within these parameters. |
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| 914lasvegas |
Feb 7 2021, 11:59 AM
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#5
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Newbie Group: Members Posts: 4 Joined: 18-November 20 From: The LasVegas Member No.: 24,903 Region Association: None |
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