FJ60 passing emissions!

[wesintl]

Are you saying you hooked up the air pump to the egr port on the exhaust manifold?

 

[LoafNvi733]

Are you saying you hooked up the air pump to the egr port on the exhaust manifold?

Allegedly! I’ve heard it may or may not give you a passing result..

 

[AdamKFarmer]

Allegedly! I’ve heard it may or may not give you a passing result..

Is there any reason why you didn't try just normal? Do you have all the emissions gear hooked up?

 

[LoafNvi733]

Is there any reason why you didn't try just normal? Do you have all the emissions gear hooked up?

Running a Chinese clone of the original so I don’t have all the full vac ports. Missing parts to my OEM and ran a single hose for vac advance that tees off to both ports. Works surprisingly well and I was already planning to desmog and go to EFI. The clone carb works surprisingly well for now and I was having a hard time finding parts for the oem carb. Another is budget and timing, needed to get this beast to pass pretty quickly. Everything is still in its place but I wasn’t very confident in it passing without all the vac hoses that attached to the stock carb.
I also work in a strictly regulated emissions controlled facility and we joked about how the solution to pollution is dilution and my coworker gave me the idea. granted that was the case in the late 90s-2000s but now our facility is state of the art for emissions.

 

[RDub]

Rereading the post about ideas to help pass emissions I think you “suggest” connecting the air pump discharge to the port on the exhaust down pipe that already has a hose from the air injection valve assembly, not the EGR port on the exhaust manifold. That is a good idea and is commonly done by rerouting vacuum hoses at the air injection valve assembly. Great job getting it setup and passing the test, did it run well setup like you had it?

 

[LoafNvi733]

Rereading the post about ideas to help pass emissions I think you “suggest” connecting the air pump discharge to the port on the exhaust down pipe that already has a hose from the air injection valve assembly, not the EGR port on the exhaust manifold. That is a good idea and is commonly done by rerouting vacuum hoses at the air injection valve assembly. Great job getting it setup and passing the test, did it run well setup like you had it?

Yes that’s exactly correct. I am still learning the names for the parts, you could theoretically do this! And yes allegedly it will run really well with an eBay special carb and routing the vac advance off the carb to a tee and then to the two ports. It runs really well and I’m pleased with it. I’m planning to put everything back to default shortly because I’d imagine running air directly into a hot cat would make it overheat after multiple cycles.
With going to EFI in June, I may begin the desmog process next weekend but I’ll need to order the block off plates and such needed to do so. I’d say this method to get through the absolute bullsh*t regulations of making a 42 year old truck pass emissions would work for most as long as you have a cat that is in good shape. Thankfully the golden emissions location doesn’t seem to really know or care, threw it on the dyno and let it eat. No visual inspections to speak of. And frankly with the spaghetti that’s under the hood they probably wouldn’t know what to look for unless they were well versed in how the system works and what to actually look for outside of an air pump and a cat. Funny enough if you look at the report they marked both the air pump and cat as N/A.. I’m not complaining especially since the 20 something year old probably doesn’t know what either looks like or knew to look for it and that both were factory equipped.

 

[RDub]

Yeah, none of the test sites open the hood or check for a cat anymore. I think someone could very possibly show up with an LS swap installed and if running a single exhaust get by without questions.

 

[Cruisertrash]

If that’s the case, can I find 1984 plates for my 60 from an antique store? Or do you have to have ownership of it the entire time?

Any plates! Colorado did not have years stamped on their plates except maybe in the 1920s and 30s, so as long as it's the type of plate used in 1984 you're good. Looks like they were nearly identical from 1977-1999. If so anything in that range would be what was available in 84.

Take all this with a grain of salt, I've never done it!

 

[60wag]

The air injection valves tend to fail and are difficult to replace with functional ones. However bypassing the control valves and running the air pump directly to the exhaust could produce a condition that overheats the cat. The temp sensor in the stock cat provides feedback to the control valves to keep an overly lean condition from melting the catalyst. Its likely that the air pump is weak enough that it can't supply enough air to damage the cat but maybe not. Don't park on any dry grass

 

[LoafNvi733]

The air injection valves tend to fail and are difficult to replace with functional ones. However bypassing the control valves and running the air pump directly to the exhaust could produce a condition that overheats the cat. The temp sensor in the stock cat provides feedback to the control valves to keep an overly lean condition from melting the catalyst. Its likely that the air pump is weak enough that it can't supply enough air to damage the cat but maybe not. Don't park on any dry grass

Well said! I just needed a passing emissions and reverted everything back already. Just needed that golden ticket from the state to allow me to give them more money for my metal plates! I get my annual bonus in June and plan to go to EFI just for the sake of better performance so in time I’ll be desmogging in prep for EFI. I’m no purist and really would prefer to have better hot starting and cold starting along with no issues on steep grades.

 

[RDub]

You’re going with Collector registration, yes?

 

[LoafNvi733]

You’re going with Collector registration, yes?

Yep that’s the plan.

 

[Cruisertrash]

Well said! I just needed a passing emissions and reverted everything back already. Just needed that golden ticket from the state to allow me to give them more money for my metal plates! I get my annual bonus in June and plan to go to EFI just for the sake of better performance so in time I’ll be desmogging in prep for EFI. I’m no purist and really would prefer to have better hot starting and cold starting along with no issues on steep grades.

To be very up front, I will always be the guy talking you out of EFI/Sniper.

First hand experience: the angle that the stock carb stops fueling is pretty radical. You're looking at the sky through the windshield with no ground in sight. And you need to be going like that for a couple hundred yards at least before the float bowl runs dry. Happened to four trucks in a group I was in one day on the same hill, all with stock 2Fs, where we bonked out coming up a long hill that was very steep. I've got lots of miles on this truck and its the only time that scenario has occurred for me.

My stock carb fires up winter, summer, hot or cold, zero problems. Do what thou wilt, but I think a lot of the talk in forums and on YouTube about Sniper kits and retrofitting EFI on carbed vehicles based on unnecessary fear. There are advantages to EFI for sure, but it's also easy to call a bad tune/vacuum leak/non-function vacuum widgets a problem and throw EFI at it to cover it up. Tangible horsepower gains are either nonexistent or negligible in my experience. Not sure if anybody's done a before and after dyno, but that would be good info to have.

 

[Rzeppa]

I wonder if @jps8460 might add to this discussion as he put a 3FE head/FI on the 2F block on his 60.

 

[jps8460]

I wonder if @jps8460 might add to this discussion as he put a 3FE head/FI on the 2F block on his 60.

Hey Jeff! I went to get it baselined at the emissions center and they passed it… I didn’t ask any questions hahaha.

 

[Rzeppa]

Hey Jeff! I went to get it baselined at the emissions center and they passed it… I didn’t ask any questions hahaha.

Was that setup an improvement over the stock carb? Power? Fuel economy? Cold starts?

 

[timmbuck2]

Any plates! Colorado did not have years stamped on their plates except maybe in the 1920s and 30s, so as long as it's the type of plate used in 1984 you're good. Looks like they were nearly identical from 1977-1999. If so anything in that range would be what was available in 84.

Take all this with a grain of salt, I've never done it!

I have several sets of early 70's Colorado plates with the year stamped on them. I want to transfer the 71 plates to my 40 one of these days...

 

[Cruisertrash]

Going with the 3FE top end is a different story than the Holley kit for sure. Individual injectors versus one injector spraying down the top of the intake, for starters. The “2FE” as it’s called is pretty cool.

I’m planning on installing a 3F (non-EFI) manifold set and carb on my truck soon. Hopefully the smog folks don’t look haha!

 

[Rzeppa]

Going with the 3FE top end is a different story than the Holley kit for sure. Individual injectors versus one injector spraying down the top of the intake, for starters. The “2FE” as it’s called is pretty cool.

I’m planning on installing a 3F (non-EFI) manifold set and carb on my truck soon. Hopefully the smog folks don’t look haha!

Yeah Toyota went straight to multiport instead of TB when they introduced FI. Back in the day, TB from a Chevy 4.3 was a popular conversion for 2Fs, either using the Chevy computer or a megasquirt. There used to be an adapter for it floating around on the LCML. IMHO, (and backed up by multiple phone conversations with Jim C.) a properly built and tuned stock carb on the 2F is just as good as the Chevy setup, which he says mainly is to fix issues with an improperly set up and tuned carb.

 

[MDH33]

I still have 100% stock emissions gear on my '85. I've always kept it intact and working in case I'm ever able to move back West and need to pass emissions testing (or if I sell it). This thread is really making me think hard about ripping it all out. I need to do a full tune up and I'm troubleshooting a rich running condition along with an exhaust/manifold leak. Might be time for a desmog.