CRG Discussion Forum

Camaro Research Group Discussion => Restoration => Topic started by: 68camaroz28 on June 10, 2020, 02:52:56 AM

Title: AC43 Original vs. AC43 reproduction
Post by: 68camaroz28 on June 10, 2020, 02:52:56 AM
Recently I purchased a set of the AC43 reproduction spark plugs for $59.95 to compare to originals. I must say after installation one would have a difficult time knowing original or repro, as the differences are in the spring washer and script & knurl on the lower barrel of the spark plug. Script on the originals is "AC SPARK PLUG FLINT MICH MADE IN U.S.A." Repro plug on right side!
(https://live.staticflickr.com/65535/49989514133_0c15efb72f_k.jpg) (https://flic.kr/p/2japjWH)

(https://live.staticflickr.com/65535/49990281117_db531dd1f2_k.jpg) (https://flic.kr/p/2jatfWz)
Title: Re: AC43 Original vs. AC43 reproduction
Post by: z28z11 on June 10, 2020, 03:04:37 AM
Look pretty good - I didn't realize somebody was reproducing them.

Besides the barrel knurling and washer, there's another hidden difference in the electrode tip (fluted). I'd be proud to use these - who's offering them ?

Regards,
Steve
Title: Re: AC43 Original vs. AC43 reproduction
Post by: ZLP955 on June 10, 2020, 09:12:11 AM
Thanks for the comparison Chick!
Title: Re: AC43 Original vs. AC43 reproduction
Post by: 68camaroz28 on June 10, 2020, 10:41:15 AM
Look pretty good - I didn't realize somebody was reproducing them.

Besides the barrel knurling and washer, there's another hidden difference in the electrode tip (fluted). I'd be proud to use these - who's offering them ?

Regards,
Steve

Steve, happened to see and purchase from Zip Corvette for $59.95. They also have R44 for same price!
https://www.zip-corvette.com/instantsearchplus/result/?q=reproduction%20ac%2043
Title: Re: AC43 Original vs. AC43 reproduction
Post by: mgreenz on June 10, 2020, 05:06:55 PM
Great information Chick. Thanks for posting it. I’ve recently looked at purchasing original AC 43’s and will use the info to either do so or to purchase the reproductions.