Source for dizzy gear? |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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I'll agree with Tim..................................... WTF
You're the ................................... that threw away the old distributor which more than likely had the gear you need. (fill in the blank yourself) You have a Sierra part number, but it's too expensive. Don't use Duane's number, it'll be a really, really sloppy fit |
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Duane in Indy
Platinum Member Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
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OOPS the 28714a was the wrong # on e-bay. Pace Performance and O"Riley have the gear below. I copied and pasted from their ad the following:
Mallory Distributor Drive Gear 28034A Mallory Mallory - Mallory Distributor Drive Gear 28034A Click on image to zoom SKU: 28034A LH Rotation - Shaft Outside/Gear Inside Dia. .467 in. - For Reverse Rotation Engine - Alloy Steel |
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Keep it as original as YOU want it
1978 Mustang (modified) |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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Grant
I'm still on the WTF train of thought I looked at your website and your engine originally had a timing chain. Look at engine page 9 on YOUR website and you'll clearly see the chain right near the cam gear in the pile of parts along with your RR distributor that's long gone. Your comments on distributor clockwise rotation make no sense for a small block Ford distributor. Given your confusion/misinformation you need to spit out some accurate info if you're going to get this right. Anything posted today is pretty confusing |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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You are right - - I AM
I was told the cam was directly gear-driven. Glad I made those photos and glad you looked at them. Now I am more confused than ever and can't think of how this distributor can be made to function on this engine. Sorry to have caused confusion. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Grant, It looks like you've already spent plenty so what's another $80 for a gear? |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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No problem, nobody's perfect, I know I'm not. I usually learn something from my mistakes
Even if a gear drive setup was newly put in the cam will still rotate the same direction as the crankshaft because of the idler gears. Being curious and stubborn, how about a picture of this distributor from the top showing the flyweights. How about serial numbers or whatever for the Pertronix distributor. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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Per request:
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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I thought it should rotate counter-clockwise, but others showed me how the springs behaved when the shaft was rotated while the top mechanism is held tight. They had me convinced the dizzy should rotate clockwise.(To me, the weights should swing from the pivots at the LEADING edge of the weights.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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Hi Grant
It looks to me like the flyweights get thrown outwards when the distributor is rotating counterclockwise. That would be right for a Ford. I think you just need a gear. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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It's not the money fr the gear. It's that I'm not sure it will work, and it seems I might be buying another dizzy altogether. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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That's what I thought, but was convinced otherwise. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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Another sketch:
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JPASS
Grand Poobah Joined: June-17-2013 Location: Orlando Status: Offline Points: 2283 |
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Am I missing something here? To me it appears the dizzy should turn CW in order to push the heads of weights outwards. I know it's automotive and a GM, but in this vid it shows a CW dizzy rotation swinging the weights, not CCW. Go to the 6:00 minute mark to see what I'm referring to: |
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'92 Correctcraft Ski Nautique
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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Hi Grant
Go to ebasicpower.com and type in SIE 18-26823 You might be surprised at the price KenO |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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As for as the weights,you could stick the shaft in a 1/2 inch reversible drill and see which way makes the weights get flung outwards
Then you'll know for sure |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Don't get your hopes up with ebasicpower until you have the part in your hands. Something's they show are dropped shipped. I found that out with PCM cooling parts
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Doughtful there is a distributor that turns opposite,there would then be a need for a reverse rotation oil pump then
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwj8w6f4wa7KAhUBdj4KHVlLCYoQtwIIHDAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D1_0p6OCg8VQ&usg=AFQjCNFogh5zgRhMvfxbMJdBJffRcP4gJw
Don't have a clue if the link I tried to post will actually work, I'm sure somebody will make it work though. (J Pass is good at that) If not do a google search for "Pertronix youtube Episode 34 part 1" and at about the 10 minute mark and several times after that you'll see good shots of a Pertronix advance mechanism in a 302 Ford distributor. Looks just like Grant's setup Don't forget, no matter the engine rotation, the distributor always turns CCW in these SBF's |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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Thanks again for all the help.
(I'll post this as soon as CCF is functioning again. It's not working at all for me as I write this.) OF COURSE the dizzy rotates Counter Clockwise -- the same way I spun the oil pump to "prime" the oil system. duh! I looked at the youtube showing the Pertronix Flame Thrower III, but did not see any rotation. No matter, just my comment saying I did view it. Also, not important, mine has the Flame Thrower II -- without the rev limiter. I've now seem 100s of photos of the chain-driven cam in the 302. The Sierra gear appears to be a good one, maybe the best for me. Wish I could see all the recent comments. I'll look at them when I'm back on CC Fan. BTW, it might interest you to know I phoned the tech line at Pertronix 3 times in the past week. At first, looking for the gear I need. The gear they do not make, nor sell. Each time I asked: "Looking at it from the top, which way does your distributor turn on a "right-hand" Ford 302?" Not a one of the three could answer. Yes, I know it was downright stupid of me to can my old distributor. (I've promised to free up one of 3 garage bays for my wife's car. Pitching old motor stuff was part of that effort.) |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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The you tube video reference was to show the flyweight arrangement in that 302 distributor,
It's the same as yours. A Chevy distributor rotates CW and the flyweight arrangement is a mirror image of that due to the opposite rotation. You can find shots of that also on you tube Just sayin' your advance mechanism is correct KenO |
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JPASS
Grand Poobah Joined: June-17-2013 Location: Orlando Status: Offline Points: 2283 |
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Here you go KENO |
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'92 Correctcraft Ski Nautique
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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ALSO -- as Ken informed me here, the shaft diameter differs from base diameter to diameter under gear. The new gear will be carefully fitted to the shaft, both diameter, and distance from shaft end. Thanks to all -- esp. Ken -- I've learned more than I thought I'd ever need, or want, to know about dizzy gears.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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Nice "find" Grant
Grant seems to have stumbled into a 351W RR gear rather cheaply and his engine guy/machinist is going to bush it to get the correct ID just like Duane suggested. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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This may explain why Pertronix does not find it necessary to provide RH rotation gears for their distributors:
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Welcome to the world of Pertronix,you won't find many happy users here. D.U.I seem to be the performance distributor of choice and come with the proper gear for your application
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Grant, I sure agree with Gary and sure hope you picked up that Pertronix real cheap. Don't forget to factor in the gear you thought was expensive! When you make a purchase like this, I'd say it pays to ask here first. |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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Pictures, . . . always asking for pictures . . .
So, here are two pictures: |
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GMacLaren
Senior Member Joined: August-22-2013 Location: St. Louis, MO Status: Offline Points: 495 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11127 |
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Looks good Grant
I did the easy part, Duane.s the talented one who did the hard part. Since the 302 RR gears are pretty scarce and expensive these days, Duane took a 351 RR gear and sleeved it to fit the shaft, drilled a new hole for the pin and you're in business. Maybe Duane will post any issues he may have run into since this might be the easiest route for people with a 302RR if needing a new gear KenO |
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