Slant Six Forum :: Uncloaking Mystery camshaft.. Now I have Numbers!

After a comedy of errors during a valve adjustment involving a dropped 3/8 wrench and a retrieval magnet, I just did this on a 83 Dodge van yesterday. Pull the spark plug, plug tube, and pushrods from the area directly above the lifter. You will likely need to pull the rocker shaft too. Drop the lifter down into the gallery bottom end down. Now, using a weak magnet on an extension, or using a pushrod or two, and maybe a long thin screwdriver, carefully maneuver the lifter until it is sitting on top of its hole. Now press down until the lifter drops back into its happy home. Put it all back together and you are done.
If I can do this on the #1 exhaust lifter of a slant six in a 83 Dodge van, then you can definitely do this in any A body with a hood that opens.

All went swimmingly until I pulled one of the lifters out of its socket, and it laid over on its side under the Peanut Head. Yeah itâ€™s the one with little push rod holesâ€¦

Author:	wjajr [ Sat Jan 15, 2011 2:02 pm ]
Post subject:	Uncloaking Mystery camshaft.. Now I have Numbers!
Me quoting me: [quote][quote]Quote: My birthday present arrived this morning (Jan. 4) via Fed Ex. Soon the mystery cam will be uncloaked.[/quote] Wife has liberated the degree wheel, wrapped it up with a bow, and said I canâ€™t play with my new toy until the 15thâ€¦ Crap! And to think I complemented her for the foresight to select such a handy, and needed deviceâ€¦ At which point she asked; â€œwhatâ€™s that thing for?â€ [/quote] Well Birthday present has been officially opened: Tric Flow Cam Degreeing Kit with case; TFS 90000 [img]http://i294.photobucket.com/albums/mm87/wjajr/Dart%20Engine/100_1365.jpg[/img] Now to go pull valve cover, and get this new rigging strapped on, and figure out what secretes my little sweetie has been keeping from me since Febuary 2008â€¦ Bill

Author:	Aggressive Ted [ Sat Jan 15, 2011 5:52 pm ]
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Very nice wife. That should keep you busy!

Author:	emsvitil [ Sat Jan 15, 2011 6:24 pm ]
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Did you figure out the specs yet?

Author:	wjajr [ Sun Jan 16, 2011 6:10 am ]
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Ed, I have to acquire a few bolts, and a bit 1/8thâ€ plate to fabricate a stable platform to mount the dial indicatorâ€™s crane, than the fun begins.

Author:	wjajr [ Mon Jan 17, 2011 7:21 pm ]
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Disclaimer: I wish someone was here to observe this procedure as I went through the various steps. Iâ€™m listing the data in the order that the directions prescribed. Actual TDC dead center determined by use of a piston stop is indicated at Zero on the little timing tab attached to the chain cover. So my timing marks are right on. After setting the degree wheelâ€™s zero mark to engineâ€™s TDC I checked for Max lift or center line of intake @ 0.050â€ Intake 144.5* + 54* = 198.5* 198.5/ 2 = 99.25 Intake Theoretical Center Line = 99.25 degrees Start of intake ramp 71* Open & closing at 0.050â€: Before full lift opening @ 0.050â€ = 15.5* After full lift closing @ 0.050â€ = 142* End of ramp closing = xxx* (pulled lifter out of socket, yet to get it back in place. Love those Peanut Heads!) Intake Lift @ lifter: 0.322â€ Gross lift at valve 0.322 x 1.5 = 0.483â€ With 0.024â€ lash = 0.459â€ Exhaust: @ 0.050â€ before full lift = 158* @0.050â€ after full lift = 69* 158* + 69* = 227* 227* / 2 = 113.5* Theoretical Center line, or Max lift = 113.5 Degrees Beginning of ramp 75* Beginning ramp @ 0.050â€ = 128* End of ram fully closed = 70* End of ramp @ 0.050â€ = 5* Total lift at lifter = 0.325â€ Gross lift at valve = 0.325â€ x 1.5 = 0.487â€ Lashed Lift at valve = 0.487â€ â€“ 0.026â€ = 0.461â€ Iâ€™m not sure how to calculate duration & overlap. Not sure how Iâ€™m going to get that tipped over Dog Bone type lifter back in to its socket with out pulling the head. Any ideas welcome. Bill

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Author:	Reed [ Mon Jan 17, 2011 7:44 pm ]
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Quote: Not sure how Iâ€™m going to get that tipped over Dog Bone type lifter back in to its socket with out pulling the head. Any ideas welcome. Bill After a comedy of errors during a valve adjustment involving a dropped 3/8 wrench and a retrieval magnet, I just did this on a 83 Dodge van yesterday. Pull the spark plug, plug tube, and pushrods from the area directly above the lifter. You will likely need to pull the rocker shaft too. Drop the lifter down into the gallery bottom end down. Now, using a weak magnet on an extension, or using a pushrod or two, and maybe a long thin screwdriver, carefully maneuver the lifter until it is sitting on top of its hole. Now press down until the lifter drops back into its happy home. Put it all back together and you are done. If I can do this on the #1 exhaust lifter of a slant six in a 83 Dodge van, then you can definitely do this in any A body with a hood that opens.

Author:	ceej [ Mon Jan 17, 2011 8:26 pm ]
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With a peanut head, you will need to pull it to reinstall the lifter. If you come up with a method that works, I'd love to learn it! CJ

Author:	wjajr [ Mon Jan 17, 2011 8:26 pm ]
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Reed: Quote: After a comedy of errors during a valve adjustment involving a dropped 3/8 wrench and a retrieval magnet, I just did this on a 83 Dodge van yesterday. Pull the spark plug, plug tube, and pushrods from the area directly above the lifter. You will likely need to pull the rocker shaft too. Drop the lifter down into the gallery bottom end down. Now, using a weak magnet on an extension, or using a pushrod or two, and maybe a long thin screwdriver, carefully maneuver the lifter until it is sitting on top of its hole. Now press down until the lifter drops back into its happy home. Put it all back together and you are done. If I can do this on the #1 exhaust lifter of a slant six in a 83 Dodge van, then you can definitely do this in any A body with a hood that opens. Me quoting me: Quote: All went swimmingly until I pulled one of the lifters out of its socket, and it laid over on its side under the Peanut Head. Yeah itâ€™s the one with little push rod holesâ€¦ Not much room to maneuver in a 9/16" hole, no drool tubes. Lucky it is #1 intake so I can get to either side of it. Perhaps a home made electromagnet will be able to right it... It has been one of those days; three steps ahead, two back--- all in slow-mo. CJ, I'll come up with something, last thing I want to do is pull that stinking head. Bill

Author:	ceej [ Mon Jan 17, 2011 8:34 pm ]
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I like it! Home made electromagnet, and a bore scope! You might be able to pull it off! Of course, with the head off, you'll be able to CC the head, check how far down the hole your pistons are and stuff. CJ

Author:	DusterIdiot [ Mon Jan 17, 2011 8:46 pm ]
Post subject:	Lol...
Quote: If you come up with a method that works, I'd love to learn it! It involves a stock noodle pushrod...and a bit of "sticky" goo to the end of the rod... Worst case scenario...pull push rod from the neighboring lifter and use a slightly curved piece of coat hanger to help probe it in place... Might have to make this a game at the BBQ...see who can get the lifter back in the hole...after some high octane... -D.Idiot

Author:	ceej [ Mon Jan 17, 2011 8:51 pm ]
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Good idea DI! The yard down 99 near Eugene has a bunch of Slants available for $125 a piece. I'll grab a couple and we can set them up on stands at the BBQ! "Nope, you dropped it. Gotta take a swig!" Hopefully Bill isn't out breaking the head bolts loose as we type! CJ

Author:	wjajr [ Mon Jan 17, 2011 9:03 pm ]
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CJ: [quote]Of course, with the head off, you'll be able to CC the head, check how far down the hole your pistons are and stuff. [/quote] Got all that jazz recorded when I super sized the valves: 44cc head, cut 0.075â€ head, piston down in hole 0.153â€, 0.030â€ over, 9.5:1 CR, and stuff. CJ: [quote]Hopefully Bill isn't out breaking the head bolts loose as we type![/quote] Not tonight, I've had it for today. Tomorrow I'll renew my fish'in license, and have at it. Crap, it's tomorrow all ready. So I get to it later this morning.

Author:	emsvitil [ Mon Jan 17, 2011 10:38 pm ]
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I'm trying to decipher your numbers using the calculator in the Dyno2000 program. Numbers aren't making sense. Your intake duration seems too small with too much lift, and the exhaust seems duration seems too long (lift about right). Can't figure out what numbers to put into program. It wants: Intake Valve open as degrees Before TDC Intake valve close as degrees After BDC (bottom dead center) Exhaust valve open Before BDC Exhaust valve close After TDC Can you translate to these figures?

Author:	Reed [ Mon Jan 17, 2011 10:41 pm ]
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Whoops, I missed the peanut head part. If you are really really good, you could get a small magnet on a long stick (like those 1/8 inch diameter retrieval magnets), stick the magnet in the cup of the lifter, snake it through the hole, look through the other pushrod hole, get the lifter in the bore, then use a long stick or screwdriver to get the magnet off the lifter. Otherwise it is head pulling time. Sorry.

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Author:	Fopar [ Mon Jan 17, 2011 10:55 pm ]
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How about one of those "push the button to open the fingers" pick-up tools Richard