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Re: Spark plug wires-1955 V8
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Forum Ambassador
 
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Randy Maull,
 for including your '55 Clipper Custom Constellation Hardtop Coupe in the Registry. And, thanks for the clarification about the Spitfire and for including a photo of it!
Posted on: 3/24 14:27
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Mal
/o[]o\ ====  Bowral, Southern Highlands of NSW, Australia "Out of chaos comes order" - Nietzsche. 1938 Eight Touring Sedan - SOLD 1941 One-Twenty Club Coupe - SOLD 1948 Super Eight Limo, chassis RHD - SOLD 1950 Eight Touring Sedan - SOLD What's this?  Put your Packard in the Packard Vehicle Registry! Here's how! Any questions - PM or email me at ozstatman@gmail.com |
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Re: Spark plug wires-1955 V8
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Home away from home
 
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Quote:
My memory tells me they were Champion J-18Y. The J denotes the ⅜" reach, the 18 is the heat range and the Y is for the projected electrode. I colored the silver finish to black to resemble the original color of the plugs back in the day. Relying on memory again, I believe Packard changed the cylinder head design mid-year. The went from a machined combustion chamber to a cast finish and the spark plug reach was changed to 7/16". You do not want to put the shorter reach plugs in the newer heads, nor do you want to put the longer reach plugs in the older heads. Someone here with more recent and relevant experience will clarify what I just wrote. Jack Vines??? Good catch on the missing throttle linkage. I had removed the carb and manifold and needed to finish hooking up everything.
Posted on: 3/25 14:33
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We move toward
And make happen What occupies our mind... (W. Scherer) |
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Re: Spark plug wires-1955 V8
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Home away from home
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Quote:
I believe they were Champion J-18Y. I changed the silver color of the plugs to black to more resemble what the plugs looked like back in '55. Packard changed cylinder head design somewhere along the line. They went from a machined combustion chamber to cast finished and went to a longer reach spark plug. You do not want to put the shorter reach plugs in the newer heads nor do you want to put the longer reach plugs in the older heads. Someone here with more recent and relevant experience will clarify what I just wrote. Good Catch on the missing throttle linkage. I had removed the carb and manifold and needed to finish connecting things.
Posted on: 3/25 14:40
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We move toward
And make happen What occupies our mind... (W. Scherer) |
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Re: Spark plug wires-1955 V8
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Just popping in
 
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UPDATE: Well what Kanter sent me (and I installed) was the RH18Y plugs, so I going to presume these are merely resistor plugs and that all will be well.
Next on tap: putting the valve covers back on, then the new wires, finally get into the distributor. Moving along slowly but surely!
Posted on: 3/28 16:05
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Re: Spark plug wires-1955 V8
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Home away from home
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Quote:
RH18Y: R=Resistor, H=7/16" Reach, 18=Heat Range - hottest in the series, Y=Projected Electrode. RH18Y has a longer reach (threaded area) than J18Y which is a ⅜" reach plug. I may have been mistaken about using J18Ys in my 55 Clipper. The parts cross-reference shows H series Champion plugs for the V-8 along with the N series (depending upon which cylinder head - early or late). You don't need or want to use resistor spark plug cables with the resistor plugs. Plugs or wires, but not both.
Posted on: 3/30 13:50
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We move toward
And make happen What occupies our mind... (W. Scherer) |
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Re: Spark plug wires-1955 V8
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Quite a regular
 
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The 1955 spark plug wires, with 35 degree boots, are available on my website packardparts.org
Posted on: 4/21 0:55
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Dwight
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