I've spent the past several days trying to hunt down someone who stocks or can order a set of NGK B4 spark plugs, which are widely identified in the archives as a good replacement for C2 small blocks. The places I've tried either don't carry NGK at all, can't find the number in their book (they all want to look up the car, not the plug number), or find the number but say they can't get the plug. If you've been successful getting these plugs recently, either by mail or at a store, I'd be grateful if you'd post where you got them. Thanks.
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Re: Source for NGK Spark Plugs
In southwest Missouri I've purchased NGK plugs from O'Reilly Auto Parts. They have always had the plugs (including B4's) in stock. Joe -
Re: Source for NGK Spark Plugs
You might try the NGK web site and see if you can e-mail them and ask where they can be ordered. Also, look for the Denso W14-U. Like the NGK B4, it is a non-resistor equivalent to the AC 45, and it also has Denso's "u-groove" ground electrode, which is probably technically superior to a conventional electrode. Both should be priced about the same - a list price of about $2.50, and most places charge less than list.
About ten years ago I was trying to find a set of Denso T20EPR-U to run in my MR2 for track events. It's one heat range colder than OEM, but I couldn't find any place that could order them. I finally called Denso and ended up talking to the sales secretary. She found a box in their sample supply and sent them to me complimentary!
DukeComment
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Re: Source for NGK Spark Plugs
check out the following link:
www.sparkplugs.com - they have Denso W14PRU's for $2.24 eachRick Aleshire
2016 Ebony C7R Z06 "ROSA"Comment
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Re: Source for NGK Spark Plugs
as a follow-up, did a search for plugs on my 1963 and the following link shows all of the plugs that are available for my car:
http://www.sparkplugs.com/results_ap...1&AAIA=1324460
Duke, based on this link, what would be the appropriate plug for my "fuelly"?
FYI - checked NGK website and NGK B4 not listed as being available anymore? What their site recommends is VPower XR5, Platinum XR5VX or Standard B6S - these are for a 5.4 motor, with no other indicationRick Aleshire
2016 Ebony C7R Z06 "ROSA"Comment
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Re: Source for NGK Spark Plugs
W14PR-U is a projected tip plug with a resistor. There is also a non-resistor version of this, the W14P-U, which is equivalent to the AC 45S. The exact equivalent to the old non-resistor, non-projected tip AC 45 is the W14-U, and this is what I recommend for all vintage small blocks (and the NGK B4, which is equivalent). The projected version is okay on engines without domed pistons, but there may be a chance of interfere with the domes on engines with 11:1 or more CR.
Most outlets no longer carry non-resistor plugs and may not be willing/able to order from the entire manufacturer's line, so you have to search to find correct non-resistor plugs. If all else fails, call NGK and Denso and ask them how you can buy a set of B4 or W14-U.
DueComment
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Success!!
A second go-around with NAPA produced good results - 10 of them in the warehouse, I pick them up at the store tomorrow. Just goes to show you need to know what you are talking about and get a counter person who has a clue.
Assuming I put the engine together right, how many years can I get out of a set of plugs? I may buy 2 or three sets and call it a lifetime supply!
Thanks for the help and the suggestions.
MarkComment
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Re: Success!!
Recommended plug change interval back in that era was 12K miles, but with unleaded fuel and reasonably good mixture control from a carburetor they should last 15-30K miles. Fouling will probably be more an issue than electrode wear, so if you have access to a plug cleaner they can probaby be run 30K easy with a cleaning every 10-15K.
DukeComment
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Re: Success!!
Thanks, Duke. At 3000 to 5000 miles a year, that's 6-10 years a set. 5 sets and I'm 90. That should do it. :o)Comment
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