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pete
01-24-2007, 10:36 PM
champion h14y
bosch w8fc
ac 43ls
motorcraft al52
autolite 436
ngk not available

53k
01-25-2007, 04:27 PM
quote:Originally posted by pete

champion h14y
bosch w8fc
ac 43ls
motorcraft al52
autolite 436
ngk not available


I haven't had very good luck with modern Champions. I have used Autolite 437s in cars ranging from a '53 232 to a '64 R-2 Avanti with excellent results in all cases.


[img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/R-4.JPG[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/64L.JPG[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/64P.jpg[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/53K.jpg[/img=right]Paul Johnson
'53 Commander Starliner (since 1966)
'64 Daytona Wagonaire (original owner)
'64 Daytona Convertible (2006)
Museum R-4 engine

skyway
01-25-2007, 06:28 PM
I'm with 53k; avoid Champion plugs. In any old car, great luck with Autolites, and Bosch too!

N8N
01-25-2007, 07:05 PM
Bosch SUPERS that is - stay away from the Platinums in any car without closed-loop (i.e. with an oxygen sensor) fuel injection. When they foul, they never clear!

nate

--
55 Commander Starlight
http://home.comcast.net/~njnagel

Lenny R2
01-25-2007, 09:01 PM
When my Avanti R2 arived from Kansas it had Autolite 216 in it.
I bought a new set the same number.The plugs near the back
always had black looking color.I have since installed a Dave
t-Bow electronic distributor with the orange box.I have a
45,000 volt mopar coil not installed yet.The plugs have been
burning much cleaner since the distributor change.Are the
437 a hotter plug ?

Lenny

skyway
01-26-2007, 12:45 PM
I appreciate N8N's warning about platinums and Bosch Platinums.

To clarify, the Boschs that I was endorsing were their old 145T1's, which I believe have become their current w8's.

imitiday
01-26-2007, 05:34 PM
splitfires work well in my r2

63R2AVANTI JOHN

53k
01-26-2007, 08:03 PM
quote:Originally posted by Lenny R2

When my Avanti R2 arived from Kansas it had Autolite 216 in it.
I bought a new set the same number.The plugs near the back
always had black looking color.I have since installed a Dave
t-Bow electronic distributor with the orange box.I have a
45,000 volt mopar coil not installed yet.The plugs have been
burning much cleaner since the distributor change.Are the
437 a hotter plug ?


I don't know. I'm not familiar with Autolite's numbering system. I went to 437s based on the recommendation of a long-time mechanic/Studebaker driver. I was having real fouling problems on our Route 66 trip with the J-12s I had in the Avanti. He gave me a set of 437s in Albuquerque(?) and I didn't have any spark plug trouble the rest of the trip (about 5,000 miles).


[img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/R-4.JPG[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/64L.JPG[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/64P.jpg[/img=right][img=right]http://www.frontiernet.net/~thejohnsons/Forum%20signature%20pix/53K.jpg[/img=right]Paul Johnson
'53 Commander Starliner (since 1966)
'64 Daytona Wagonaire (original owner)
'64 Daytona Convertible (2006)
Museum R-4 engine

John Kirchhoff
01-26-2007, 11:55 PM
53k, you mentioned not having any problems after putting in new plugs. Old motorcycles had notoriously weak ignition systems with lots not putting out more than about 12,000 volts. I found that wish such low voltage, a plug could look perfect but literally refuse to fire after only 5,000 miles. Put in a new one and away I'd go. I figure that somehow resistance must build up inside the plug with use. My present bike came with NGK's and they were spitting and sputtering upon acceleration at 5,000 miles. I put in ND (Nippondenso) and they were good for only 6,000 miles. I could run Champions and Autolites over 10,000 miles and never have a lick of trouble, so after that is was American made plugs only. With today's 40-60,000 volt ignition systems, I've seen people that had 100,000 miles on the orginal set of plugs and never cleaned, gapped or did anything to them. But with that much voltage, you could probably shove a corn cob in the spark plug hole and it would fire.

John Kirchhoff
01-27-2007, 12:06 AM
53k, you mentioned not having any problems after putting in new plugs. Old motorcycles had notoriously weak ignition systems with lots not putting out more than about 12,000 volts. I found that wish such low voltage, a plug could look perfect but literally refuse to fire after only 5,000 miles. Put in a new one and away I'd go. I figure that somehow resistance must build up inside the plug with use. My present bike came with NGK's and they were spitting and sputtering upon acceleration at 5,000 miles. I put in ND (Nippondenso) and they were good for only 6,000 miles. I could run Champions and Autolites over 10,000 miles and never have a lick of trouble, so after that is was American made plugs only. With today's 40-60,000 volt ignition systems, I've seen people that had 100,000 miles on the orginal set of plugs and never cleaned, gapped or did anything to them. But with that much voltage, you could probably shove a corn cob in the spark plug hole and it would fire.

Electronic ignitions work much better than old systems even if they don't put out any more voltage because of their quicker rise time, or the lenght of time it takes to produce peak voltage. Even if the plug is cruddy, the quick rise time doesn't allow time for the spark to leak through the deposits rather than jump the air gap. that's what makes them more resistant to fouling. The super high voltage jobs are great for getting an .080 plug gap to ignite a overly lean mixture but if you lt the gap wear too wide, the electricity is going to find the path of least resistance whether it's across the distributor terminals, through the plug wires or from the coil terminal. I still try to change plugs every 30,000 miles or so even though they are still running fine. I figure running them 100k is probably false economy.

N8N
01-27-2007, 07:34 AM
Somewhere on Autolite's web site there is an explanation of their numbering system; I've downloaded it but am too lazy to look it up at the moment.

yes, I am also running the Bosch W8AC's in my car with no problems, but haven't had any major problems with other plugs either.

nate

--
55 Commander Starlight
http://home.comcast.net/~njnagel

Lenny R2
01-27-2007, 11:33 AM
On the Autolite web site they listed the 437 plugs for the V8 studebaker cars.
No listing for an Avanti R2.I did not see a heat range
chart or number chart will check more or go to nappa and check
there listing.

Lenny

pete
01-28-2007, 02:16 AM
looking at a spark plug chart the plugs are of mod heat range or mid heat range for standard stude motors but i notice for all high performance cars eg. fast ones they have cold plugs like champion n4 n7y is coldish