Has anybody got a source for Spark Plug Tubes? PN?

CJ
74 Valiant

Aha! Stop trying to buy things from aftermarket sources and call Dodge!

$3.60 each

Got six ordered.

CJ

$19.95 for a set of six on Ebay, Central Jersey Auto Parts is the keyword. I have two sets on the way. Some of their stuff is outlandishly priced but this seems reasonable.

http://cgi.ebay.com/ebaymotors/ws/eBayI ... AMEWA%3AIT

The link says "bidding over" but I have it from a reliable source that there are more sets.

The gaskets are $.50 a piece from NAPA.

Pulled the plugs and installed fresh plug tubes and gaskets.
The plugs were bone white. We'll see how they color now that I've pulled the plug crush washers.
If they don't take on some color, I'll drop a heat range. I'm not getting any pinging. Gotta be getting close. Coaxed the car up around 80 today. It's running fine, and has good power. WIth a 63 Main, I shouldn't be running lean. I've got a 65 in my tool box. But....
WIth the -7 Power Valve, I may be holding the mixture on the lean side. Since the actuator piston for the power valve isn't adjustable, will going to the -13 increase fuel delivery at lower throttle settings?


CJ
74 Valiant
1945 Holley...for now.

what are plug tubes?
my plugs are also bone white but the timing is 1 degree before tdc and the carb (holley 1945) fuel/air screw is set at 1 3/4 turns which everyone gives as default. i have a 160 dgree thermostat and the engine runs real cool. what could cause the plugs (ngk) to get white so fast, as they were changed 30 miles ago?

Check out some of Slantsixdan's posts. He's the guru on this stuff.

Your spark plugs go into the head through some steel or aluminum "Tubes" that are held to the head by the spark plug. At the top of the tube, there is a seal that keeps the oil in the motor.
Your Spark Plugs should not have the crush washers on them in a /6 w/tubes. This allows for better heat transfer from the plug to the head. The tube serves as a "Gasket" for the Spark Plug.
As far as 1 3/4 turns on your mixture, that may be a starting point. I'm out around 2+ turns. Make the mixture adjustment as your Service Manual describes. I'm also running a richer main jet now. The idle circuit isn't where your plug color is going to get the most effect. Your main circuit will determine this. Plug color should be checked after running a few miles down the road. If you let the car idle for any period of time, it can effect the reading. Get home and shut it right down.

I'm now running at 12 degrees base advance, and have picked up 2 MPG with two steps richer main. (63) The performance is Much Improved.

CJ

You haven't got 'em on a '75, which uses taper-seat spark plugs. On '60-'74 engines, the plugs are of the gasket-seat type and they "live" in drawn-aluminum tubes that have an oil seal at the outboard flange where they mate to the cylinder head. On '60-'62 heads, the spark plug gaskets must be used. On '63-'74 heads, you're not supposed to use the gasket that comes with the plug.

Too cool; it's costing you gasoline. Put in a 180°.

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Thanks Dan!

CJ