Date code carb identification

FJ40Jim · 04-11-06, 10:04 AM

This is the first in a series of threads regarding how to identify production date of various Cruiser components.

Toyota (Aisan) carburetors from ~1963-present have a date code stamped on them.

It is stamped in small letters on the top front of the carb.

The format is Y M DD. Y is the last digit of the year (4=1964,1974,1984...), M is a letter of the alphabet corresponding sequentially to the month (A=jan, B=feb,...), and DD is the numeric day of the month.

Aisan throttle bodies on EFI vehicles have the same date code.
OEM fuel pumps also use the same date code.

Carbs prior to approx. 1963 have a funky letter code that I have not yet been able to make sense of. Anybody?

Pics to follow.

FJ40Jim · 04-11-06, 10:11 AM

Here is a January 20th, 1976 carb.

It is stamped 6 A 20

We know it is a 2F carb because of the vac secondary design, so it has to be 1975-1987.
We know it is from the 1970's because of the simple design and tall insulator block.

Therefore, 6= 1976.

FJ40Jim · 04-11-06, 10:16 AM

Here's a 1987 carb. Note that the stamping location is changed from top surface to front edge of air horn. The location changed about 1979.

The code translates to 1986 October 1st. That means the truck is registered as a 1987 model year.

FJ40Jim · 04-11-06, 10:23 AM

Here is a typical 70-74 F carb.

The code is 4 K 6.

Translates to 1974 Nov 6th.

The carb was built in 1974, but it is a 1971 model, because it has a part #tag of 60202, and had cable linkage and no fuel return line.

Mace · 04-11-06, 11:05 AM

Sooo, is this a 70 or an 80 carb??
Never mind, I see that they changed locations..

I think it has manual secondaries..

Pighead · 04-11-06, 11:08 AM

Mechanical secondaries?
1970

Fuzzy Logic · 08-22-07, 05:06 AM

Quote:

Originally Posted by Pighead

Mechanical secondaries?
1970

Yes

04-11-06, 10:04 AM	#1
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,160	Date code carb identification This is the first in a series of threads regarding how to identify production date of various Cruiser components. Toyota (Aisan) carburetors from ~1963-present have a date code stamped on them. It is stamped in small letters on the top front of the carb. The format is Y M DD. Y is the last digit of the year (4=1964,1974,1984...), M is a letter of the alphabet corresponding sequentially to the month (A=jan, B=feb,...), and DD is the numeric day of the month. Aisan throttle bodies on EFI vehicles have the same date code. OEM fuel pumps also use the same date code. Carbs prior to approx. 1963 have a funky letter code that I have not yet been able to make sense of. Anybody? Pics to follow. __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

04-11-06, 10:11 AM	#2
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,160	Here is a January 20th, 1976 carb. It is stamped 6 A 20 We know it is a 2F carb because of the vac secondary design, so it has to be 1975-1987. We know it is from the 1970's because of the simple design and tall insulator block. Therefore, 6= 1976. Attached Images __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

04-11-06, 10:16 AM	#3
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,160	Here's a 1987 carb. Note that the stamping location is changed from top surface to front edge of air horn. The location changed about 1979. The code translates to 1986 October 1st. That means the truck is registered as a 1987 model year. Attached Images __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

04-11-06, 10:23 AM	#4
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,160	Here is a typical 70-74 F carb. The code is 4 K 6. Translates to 1974 Nov 6th. The carb was built in 1974, but it is a 1971 model, because it has a part #tag of 60202, and had cable linkage and no fuel return line. Attached Images __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

04-11-06, 11:05 AM	#5
Mace what he said Join Date: Feb 2002 Location: Las Vegas Posts: 10,984	Sooo, is this a 70 or an 80 carb?? Never mind, I see that they changed locations.. I think it has manual secondaries.. __________________ I am kinda gay....... My Myspace http://profile.myspace.com/index.cfm...endid=75712409 "Mary Poppins: In every job that must be done, there is an element of fun. You find the fun and - SNAP - the job's a game."

04-11-06, 11:08 AM	#6
Pighead myopic luddite Join Date: Aug 2004 Location: Midtown Sacramento TLCA# 2509 Posts: 1,742	Mechanical secondaries? 1970 __________________ "Well it's a '68, '69, '70, '71, '72, '73, '74, '75, 76, '77 FJ55" http://forum.ih8mud.com/424768-post9.html

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