request a lesson on engine timing |
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request a lesson on engine timing |
type47 |
Dec 8 2013, 08:09 AM
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#1
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
I'd like to know on what parameters does the timing of an engine depend: induction? cam? I am resurrecting a 2L with a carb cam and installing a CIS basic system. We started the engine at the ECC in Oct and am progressing very slowly. I think the engine has an 009 dizzy (engine is still at ECC site so can't check now); at least it has a non-vacuum advance dizzy. I have a 2L D-Jet dizzy ready to install and that will probably be one of the next steps. When we started the engine, it did not sound smooth running but it started and that was the intent at the time,
http://www.youtube.com/watch?v=gRLyDnp7G_0#t=15 but there could be other things that caused that. My question is really to what specs do I time the engine; 27 degrees @ 3500 rpm like a D-Jet? |
injunmort |
Dec 9 2013, 07:23 PM
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#2
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Senior Member Group: Members Posts: 1,024 Joined: 12-April 10 From: sugarloaf ny Member No.: 11,604 Region Association: North East States |
euro, that is how indian and dusenberg did it. advance, under load until it pings and retard a 1/4 turn. very much like a mag set up. after changing dist in my chevy truck, timing marks were irrelevant, advance the dist til it ran smooth then drive it under load und backed off timing until it stopped pinging under load.
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gothspeed |
Dec 9 2013, 07:55 PM
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#3
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Senior Member Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None |
euro, that is how indian and dusenberg did it. advance, under load until it pings and retard a 1/4 turn. very much like a mag set up. after changing dist in my chevy truck, timing marks were irrelevant, advance the dist til it ran smooth then drive it under load und backed off timing until it stopped pinging under load. That method served me well in my early days, before knock sensors and non adjustable EFI timing came along. Also as a teenager, when I did not have enough money to own a timing light. (IMG:style_emoticons/default/unsure.gif) This worked well as a fine tuning method also, as the resultant setting will be optimized for whatever elevation one finds oneself in. Although I only retarded a little bit below the 'ping' zone. (IMG:style_emoticons/default/smile.gif) |
euro911 |
Dec 9 2013, 09:43 PM
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#4
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
euro, that is how indian and dusenberg did it. ... A friend's dad's old Harley '45' is where I got the idea from. I still remember the first time I tried kicking it over - and being thrown over the handlebars (IMG:style_emoticons/default/w00t.gif) |
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