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question for the timing guru's

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Old Apr 14, 2012 | 04:48 PM
  #1  
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question for the timing guru's

OK guys this is gonna be a little long sorry. I have one of those fox valley eBay timing adapters, I know it wont work as a stand alone unit for timing but I figure I can make it work, here is my idea...

Since no timing light will let me time ATDC I figure I can do the math myself, I remember reading somewhere that 1/16" on our balancer is 1*. (I will actually do the math myself before I try this to make sure) I also remember reading that lumy prob at sea level (I'm on long island) should be 7* ATDC. (please someone correct my if my numbers are wrong)

So I figure if I make a nice visable mark on my timing plate 7/16" above the 0, hook up the fox valley adapter and use it to trigger my timing light. Then bring her up to 1400 RPM and time the groove on my balancer to the mark I made on the timing plate I would be at 7* ATDC

Does this make sense? Or have I been drinking to much today? Any advise or comments would be appreciated
 
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Old Apr 14, 2012 | 08:27 PM
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Fill me in here. How does this Fox Valley adapter attach to the engine? Does it go in a glow plug hole, or does it clamp to an injector line? We need to know this to help you out accurately.
 
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Old Apr 14, 2012 | 09:02 PM
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Sorry it goes in the glow plug hole.
 
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Old Apr 15, 2012 | 07:49 AM
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You sound like you are heading in the right direction, but I think you need to time to about 2* ATDC instead of 7* ATDC.
 
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Old Apr 15, 2012 | 09:58 AM
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atdc??? should be btdc shouldn't it?
 
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Old Apr 15, 2012 | 12:58 PM
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He's using lumy method, not the pulse method. Lumy method is ATDC, pulse method is BTDC.
 
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Old Apr 15, 2012 | 03:47 PM
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the 1/16" to 1* is not always 100% accurate though its a good base line to start with
 
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Old Apr 15, 2012 | 05:15 PM
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OK cool thanks a lot guys. I figure this will get me much closer then by ear after I change my IP. At the very least it will be close enough to run good for a while till I either find someone with all the proper tools or find some money so I can splurge on some more tools for myself
 
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Old Apr 15, 2012 | 08:19 PM
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i did my injectors and ip about a year ago and just timed it by ear which i know im pry off but believe me it cant be by more than a 1* or so, runs great, high idle and all sounds the way it should and ive had 0 problems. However i know a guy at a local big name diesel shop here who has the meter to time it but getting our schedules to line up is darn near impossible lol

sounds like u are on ur way man
 
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Old Apr 15, 2012 | 08:26 PM
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this will come in handy.


6 makes mine go nice.however iv felt her retard after the tune up now,and i bet she's closer to 7-8 right now.a bit down on power,BUT economy is up.i'll be checking it again soon to see,but been busy.
 
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Old Apr 15, 2012 | 09:12 PM
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Nice thanks you guys are great and the wealth of knowledge on here just can't be beat. I figure it was like 50 bucks on eBay so it was worth a shot. Reading the instructions its clear it was intended for something like a true lumy probe set up. But it will trigger my timing light and i can do math so i figured i could make it work besides using things they way they were intended is never any fun LOL. Thanks a million brothers. I hope to at least try and give it a go on my present shot IP next weekend and ill keep u posted
 
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Old Apr 15, 2012 | 09:21 PM
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After seeing that dynamic timing spec. sheet, I guess 2* ATDC is a little to advanced. About 4 or 5* ATDC would be more ideal.
 
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