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FS: Curtis Counter 951 Knock Counter
Posted: Thu May 21, 2026 5:06 pm
by Tom
For the 951, having some way to monitor knock is especially important on modified cars running higher boost. I previously outlined
here how to make your own knock counter using an inexpensive Curtis Instruments 703PR-102 event counter.
I recently discovered that these counters are now out of production, which is a bummer for 951 owners. Not really sure if they stopped making them forever, but all of the normal US suppliers are out of stock. There are certainly other counters that can be used, but they all have their own specs and may not produce directly comparable results to the cars that already have this knock counter in them.
When I learned these were NLA, I found some old stock on eBay and decided to buy them to preserve them for the 951 crowd.
If you want one, send me an email at
[email protected]. I’ll sell them for $45 each, shipped to the 50 states. Only 8 available (one is already spoken for), and once they’re gone, they’re gone.
- curtis-counter.jpg (221.94 KiB) Viewed 638 times
Re: FS: Curtis Counter 951 Knock Counter
Posted: Thu May 21, 2026 6:19 pm
by Mscromer
Tom wrote: Thu May 21, 2026 5:06 pm
For the 951, having some way to monitor knock is especially important on modified cars running higher boost. I previously outlined
here how to make your own knock counter using an inexpensive Curtis Instruments 703PR-102 event counter.
Email sent if you still have one.
I recently discovered that these counters are now out of production, which is a bummer for 951 owners. Not really sure if they stopped making them forever, but all of the normal US suppliers are out of stock. There are certainly other counters that can be used, but they all have their own specs and may not produce directly comparable results to the cars that already have this knock counter in them.
When I learned these were NLA, I found some old stock on eBay and decided to buy them to preserve them for the 951 crowd.
If you want one, send me an email at
[email protected]. I’ll sell them for $45 each, shipped to the 50 states. Only 8 available (one is already spoken for), and once they’re gone, they’re gone.
curtis-counter.jpg
Email sent if you still have one
Re: FS: Curtis Counter 951 Knock Counter
Posted: Fri May 22, 2026 3:57 pm
by Clifton Anderson
Tom
I will purchase one of the Curtis Counters
Clifton Anderson
[contact info redacted]
Re: FS: Curtis Counter 951 Knock Counter
Posted: Sun May 24, 2026 10:45 pm
by Rroberts
Good evening, Tom
I would like to buy one if any are still available.
I have sent an email.
Thanks, Randy.
Re: FS: Curtis Counter 951 Knock Counter
Posted: Sat Jun 27, 2026 8:56 pm
by vacobra
Are any of these available I would like to purchase one
Re: FS: Curtis Counter 951 Knock Counter
Posted: Sun Jun 28, 2026 7:36 am
by Tom
vacobra wrote: Sat Jun 27, 2026 8:56 pm
Are any of these available I would like to purchase one
I still have two left. Send me an email at
[email protected] and I can get you one.
Re: FS: Curtis Counter 951 Knock Counter
Posted: Sun Jun 28, 2026 7:39 am
by Tom
Tom wrote: Sun Jun 28, 2026 7:36 am
vacobra wrote: Sat Jun 27, 2026 8:56 pm
Are any of these available I would like to purchase one
I still have two left. Send me an email at
[email protected] and I can get you one.
Actually, I just checked and digikey has them back in stock. I guess it was a temporary back-order thing...
https://www.digikey.com/en/products/det ... 102/254344
Re: FS: Curtis Counter 951 Knock Counter
Posted: Sun Jun 28, 2026 8:26 am
by vacobra
Tom wrote: Sun Jun 28, 2026 7:36 am
vacobra wrote: Sat Jun 27, 2026 8:56 pm
Are any of these available I would like to purchase one
I still have two left. Send me an email at
[email protected] and I can get you one.
I sent you an email