Pirate 4x4 banner

1 - 3 of 3 Posts

·
Registered
Joined
·
2,551 Posts
Discussion Starter #1
I am looking at the GM TBI swap onto a 84 CJ7 but couldn't find any info about whether its CARB legal or if anyone has had any issues with smog in CA.
 

·
Registered
Joined
·
1,140 Posts
No it is not CARB legal but yes you can get it to pass if you put forth the time($) with the referees.
The Howell system is a fuel only GM TBI system that they were able to get a CARB cert for.

If you just drive up in an 84 jeep most refs will not pass the visual inspection since obviously it will not have a carb any more.

Is this really hardcore tech?
What happened to search and the general forum?
 

·
Registered
Joined
·
1,557 Posts
Yes, if done correctly, swapping in a GM TBI into an '84 anything, will be CARB (Calif Air Resource Board) legal. You will have to configure the '84 to meet the SMOG requirements of the engine you install. This means every SMOG item in the truck that the TBI came out of, must be installed in the CJ. Also, if the enines out of a 3/4-ton truck, you'll have to configure it as if it came out of a 1/2-ton.
You can choose to configure your TBI to any number of years/configurations; but all items must be from a platform certified to operate in CA. Most critical is to match the ECM/PROM to the engine/trans combo. The Ref will scan the ECM for the PROM ID--it better match the engine configuration you've decided upon.
Details, such as "check engine" light, and the presence of a diagnostic jack are critical to passing; my install almost failed because I used the "Check Emissions" light that came in my '88 XJ, versus a light labeled "check engine"; I was admonished to relabel my light!
 
1 - 3 of 3 Posts
Top