93 Gas cap - ZR-1 Net Registry Forums

SitkaSam · 07-29-2019

Does anybody have the correct number for the gas cap for NCRS judging?
I think mine had a locking cap as the keys are here but has been replaced. Not sure if this one is correct?
Thanks so much

jrd1990zr1 · 07-30-2019

I believe the OEM gas caps were non-locking. They are also date coded if you are doing the NCRS process. Date code is embossed on the underside of the cap and is normally checked by the judges.

Joelbbvette · 07-30-2019

Correct, mine got hit for being a replacement date for a point or two. No biggie.

TX '90 ZR1 · 07-31-2019

OK guys.
You have me all worried now about having the correct date on my gas cap!!
Where is the date exactly? Mine has numbers 2(space)269 on the bottom side of the threaded part. Does this tell us anything??

jrd1990zr1 · 07-31-2019

Quote:

Originally Posted by TX '90 ZR1

OK guys.
You have me all worried now about having the correct date on my gas cap!!
Where is the date exactly? Mine has numbers 2(space)269 on the bottom side of the threaded part. Does this tell us anything??

The date is in small raised numbers on the treaded side of the cap. On the end which goes in the tank first. First number is the year followed by a space then followed by the julian day of the year. So your cap if it is a "slant" cap and looks like the one in my post above, appears to be dated 1992, the 269th day of the year. The cap on my 1990 is 0 180, which is a 1990, 180th day of the calendar year which follows the build date of my car.

From a judging perspective (since yourcar is a MY 1990) the most I can see you could lose is 20% of the originality points assocated with the cap, due to the cap having the wrong date code. Condition points could also be taken if the cap is damaged or aged (discolored).

Sorry for being long winded.

TX '90 ZR1 · 07-31-2019

Thanks for the reply. I appreciate the thorough explanation.
My cap does look exactly like the one in the pic.
Looks like I will be putting a correct date coded fuel cap on my list of things to keep an eye out for.
Thanks again,

Joelbbvette · 08-01-2019

Kenny,

Don't let the gas cap stop you as long as it looks correct, then it is a GM replacement part. Small deduct but nothing huge.

Joel

TX '90 ZR1 · 08-01-2019

Quote:

Originally Posted by Joelbbvette

Kenny,

Don't let the gas cap stop you as long as it looks correct, then it is a GM replacement part. Small deduct but nothing huge.

Joel

Hey Joel,
Not letting these "little things" stop anything, but it is amazing how many of the "little things" I have been able to locate just by keeping my eyes open.
Looks like you did great with your car. Congratulations!!

jrd1990zr1 · 08-01-2019

Quote:

Originally Posted by TX '90 ZR1

Hey Joel,
Not letting these "little things" stop anything, but it is amazing how many of the "little things" I have been able to locate just by keeping my eyes open.
Looks like you did great with your car. Congratulations!!

As mentioned above the date code alone shouldn't be more than a 1 point deduct.

SitkaSam · 08-13-2019

Thanks for all the info...but.....
My 93ZR1 has 8,000 miles on her and the original owner was anal about his Z, keeping everything from the key punch-outs and every document that came the car. He had two gas cap keys for locking cap, the window sticker has "Delco locking ll" Am wondering of that was an option?
I would appreciate any technical information if this was an option. The NCRS Judging manual says absolutely nothing about a locking cap, only that it is peaked and "Caution Remove slowly as spray may cause injury". The locking cap has no date, red center and made in USA
Thanks....another Z mystery?

07-29-2019	#1
SitkaSam Join Date: Jan 2018 Location: Lake City, MN Posts: 56	93 Gas cap Does anybody have the correct number for the gas cap for NCRS judging? I think mine had a locking cap as the keys are here but has been replaced. Not sure if this one is correct? Thanks so much

07-30-2019	#3
Joelbbvette Join Date: Oct 2017 Location: Tampa, FL / Rockledge, FL Posts: 194	Re: 93 Gas cap Correct, mine got hit for being a replacement date for a point or two. No biggie. __________________ Joel Tampa/Rockledge, FL Present Collection 1969 350/300 AC Convertible 1972 454 Coupe 2nd Owner 1988 KOH EX5006 - ZR-1 Prototype 1990 ZR-1 #277 NCRS Dave McLellan Award 2019 1994 Copper Convertible NCRS Dave Hill Award 2012 2001 Z06 122k miles

07-31-2019	#4
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,041	Re: 93 Gas cap OK guys. You have me all worried now about having the correct date on my gas cap!! Where is the date exactly? Mine has numbers 2(space)269 on the bottom side of the threaded part. Does this tell us anything?? __________________ Kenny 1990 #442

07-31-2019	#6
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,041	Re: 93 Gas cap Thanks for the reply. I appreciate the thorough explanation. My cap does look exactly like the one in the pic. Looks like I will be putting a correct date coded fuel cap on my list of things to keep an eye out for. Thanks again, __________________ Kenny 1990 #442

08-01-2019	#7
Joelbbvette Join Date: Oct 2017 Location: Tampa, FL / Rockledge, FL Posts: 194	Re: 93 Gas cap Kenny, Don't let the gas cap stop you as long as it looks correct, then it is a GM replacement part. Small deduct but nothing huge. Joel __________________ Joel Tampa/Rockledge, FL Present Collection 1969 350/300 AC Convertible 1972 454 Coupe 2nd Owner 1988 KOH EX5006 - ZR-1 Prototype 1990 ZR-1 #277 NCRS Dave McLellan Award 2019 1994 Copper Convertible NCRS Dave Hill Award 2012 2001 Z06 122k miles

08-13-2019	#10
SitkaSam Join Date: Jan 2018 Location: Lake City, MN Posts: 56	Re: 93 Gas cap Thanks for all the info...but..... My 93ZR1 has 8,000 miles on her and the original owner was anal about his Z, keeping everything from the key punch-outs and every document that came the car. He had two gas cap keys for locking cap, the window sticker has "Delco locking ll" Am wondering of that was an option? I would appreciate any technical information if this was an option. The NCRS Judging manual says absolutely nothing about a locking cap, only that it is peaked and "Caution Remove slowly as spray may cause injury". The locking cap has no date, red center and made in USA Thanks....another Z mystery?