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Thread: Grading On The Timing Curve....
          
   
   

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  1. #16
    Good Wrench's Avatar
    Good Wrench is offline CHR Member Visit my Photo Gallery
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    Aww don't mind me i'm just pouting cause I gotta go buy another timing light and spend $100.

    Bout the only way to know really.

    Thanks.
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

  2. #17
    erik erikson's Avatar
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    Quote Originally Posted by DennyW
    Well, that's what I was thinking....
    I meant for me.

  3. #18
    Good Wrench's Avatar
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    I painted it silver an it still shows up. Just a sliver of it though. That stupid aftermarket pointer about covers it up.


    PS, My wife had a different suggestion on what to do with my new timing light. Personally, I think it's anatomically impossible.
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

  4. #19
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    Am i gonna have to seperate you two again?

  5. #20
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    Quote Originally Posted by Good Wrench
    I painted it silver an it still shows up. Just a sliver of it though. That stupid aftermarket pointer about covers it up.


    PS, My wife had a different suggestion on what to do with my new timing light. Personally, I think it's anatomically impossible.
    Im sure there is a website out there where this has been done!! But i would not recommend trying it at home !!!!

  6. #21
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    Quote Originally Posted by Dave Severson
    Some days your reading comprehension is really off....New Meds????
    TRASH Reply's Like this one ! Is the # one reason so many Members have to go to other Forums to get there info . Dave you really need to Clean it up ( NOW ) NOT COOL / SB Chevy Tango

  7. #22
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Quote Originally Posted by DennyW
    Ah O, did you hear that Tech...???? No more book Tech stuff....
    What I said was don't get stuck on the book stuff, then of course you took that to be no more book stuff...... See the difference???? Just a comprehension deal, or reading things in to what I wrote..... whichever..... My complaint is that people can't take things the way they're wrote..... It seems Good Wrench understood and it's his thread so I guess that's all that counts,..,,,,,
    Yesterday is history, tomorrow is a mystery, Live for Today!
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    Learning must be difficult for those who already know it all!!!!

  8. #23
    65ny's Avatar
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    Quote Originally Posted by DennyW
    A link to info...? I don't think so. You are relaying info for this club...Could be wrong, but I have done it in the past...

    The link is from another forum. I was trying to avoid any mud-slinging. But...here is the link. I found it to be VERY helpful.

    http://www.chevelles.com/forums/show...t=ignition+101

    I'm not going to argue with anyone, I can't say that I know as much or more as some others here, but I know how I set my timing, and it is working for me. I was a little surprised with the results too.

  9. #24
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    Quote Originally Posted by 65cayne

    I dont think that sounds unreasonable (52 deg). I think what he is alluding to is cruise/no load timing such as the highway where he might be running @ 2900rpm or so, initial + mechanical +vac adv puts you right in that ballpark wouldnt it?

    Backing down to 3000rpm...you have 4+18+24 = 46 degrees total timing.

    Okay, not quite 52 degrees , but more than 36 degrees. Point being, if the car is tuned to run lean and clean, should it not be able to handle the extra timing at cruise?
    Bingo. We are on the same page.

    And BTW: I used a timing tape.....no guesswork.
    Last edited by 65ny; 03-16-2008 at 08:27 PM.

  10. #25
    Good Wrench's Avatar
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    HIya Denny if your still on.....

    OK Got the $^#$% timing light...

    12 degrees initial...

    19.3 @3000 RPM no vaccum advance

    36.6 @ 3000 RPM with vaccum advance.

    Changed springs in centrifigul advance to play out at 23 degrees @ 3000 RPM
    Once again I mixed springs, one medium, one light.

    Total advance now is 39.9

    Too much?
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

  11. #26
    Good Wrench's Avatar
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    Yeah, thanks!

    Now if I may ask a real stupid question. In college I set my timing by the book and it was usually 8 BTDC on Chevy motors. But I personally have always kept it on 12 BTDC.

    I never really got this down.

    Is there an optimum setting? I know it depends on everything else but just general?

    It was mentioned to set initial timing at 16 BTDC but it tends to fire through my carb on occasion. In cold weather.

    Ohh not to get off subject but what temprature range should the engine run warm at?

    160? 180?

    Mines usually 130.

    Thermostat works too.
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

  12. #27
    Good Wrench's Avatar
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    Ahhh, OK. Yeah, You see the car kinda stumbles in cold weather. Choke works fine,

    When I put the engine together I did everything i could think of to keep it as cool as possible. I got a Milodon deep sump oil pan that holds 12 quarts of oil, a high volume oil pump to move it around. One of them fat desert cooler radiators with all the fins in. A flex fan with the stock shroud still in, a transmission cooler and I painted the engine black. Best I got was 145 temprature at the radiator. Ususally the under dash mechanical gauge barely lifts off the peg at freeway speed. Most I seen it rise was 130.

    Thats probably whats throwing me off then.

    All these years I just had only the stock dash idiot light. Now I know.

    Now, do I try to make it run hotter or do something else?
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

  13. #28
    Good Wrench's Avatar
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    Hiya Denny w,

    I got 2 temp gauges on the car and both say average 130 degrees. Goes up to 140 if I keep revvin the engine but cools back down. My lovely wife checked as well on one while I did the other. Thermostat is recent.

    Well, I redid initial timing to 8 degrees an got 35.6 total timing. Gonna try that an see wot it does.

    Here's another wrinkle, I hooked my vaccum gauge to the carb and i'm only pulling 16.2 inches of vaccum at idle. I pulled off all the leeches on the vaccum and it remains unchanged. I reset the idle mixture screws, no change. I changed around the timing. No change.

    The heads have been recently rebuilt and the car usually runs as smooth as a cats back. So, no lope. Just developed an off idle stumble, or mini surge. But yesterday morning the car ran as smooth as silk. Got the stumble early in the morning with outside temprature at 25 degrees. Had the heater on. No reading on the uderdash gauge.



    A surly fellow at the speed shop said to configure my 1406 carb to 1405 specs. This I have done as close as I can.
    .98 jets .075x.042 needles, orange 5 kg springs.

    I tell ya, i'm getting kinda confused now.

    Will test it out though. See what it does.

    Wish I was rich enough to run the Holly again. Dumping huge amounts of gas down that engine makes it run lika scalded chicken. An no problems.
    Got lots of chrome,
    It's good for show,
    But when I hit the gas,
    The pig won't go!

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