Typical Smog Delete upgrades on Isuzu 2.3 Motor (Isuzu Trooper 2 , Holden Jakaroo )

Discussing smog delete issues that come up on mid-1980s import vehicles which had computer controlled carburetors, the worst combination of technology used on the tail end of automotive industry use of carburetors while electronic fuel injection was being phased in as industry standard. This specifically is the Isuzu 4ZD1 motor with US market retrofits in a custom configuration. This was sold under Subaru, Chevrolet and Holden brand names in foreign markets. Parts compatibility is a hodgepodge of GM, Ford, Isuzu and some Nissan components. The 1984-1987 model is as shown, the 2.6 liter version starting in 1988 came with fuel injection but many owners continue to retrofit them to carburetor/smog delete/header setups using manifolds scavenged from earlier models found at junkyards. Many parts remained interchangeable between the 2.3 and 2.6 4ZE1 motors.
Typical regulations on this type of work require a smog exemption due to the age of the vehicle and or installation of an aftermarket upgrade catalytic converter (which this vehicle has).

[@360Birdman]

Just purchased a 1992 Isuzu pickup with 124k miles. The previous owner did all this, smog and cat delete. Has a brand new Webber, no AC or power steering. Runs really strong and is really fun to drive. 5 speed too, long live the manual!

[@bernieclement3373]

I had a isuzu pup pickup for several years and done a lot of the stuff your talking about, the biggest bang for the buck I found was removing the mechanical fan it had no clutch. I got a 12v electric fan from a junk yard for $20 a 30 amp toggle switch inside and a good Temp gauge to turn on when needed. After that it had a little powerband going through the gears lol it probably robs %10 of this little engine's power.

[@8digitPDX]

+Bernie Clement Thanks, your advice and comments would be entirely welcome. There are definitely less of these on the road than ten years ago but I understand they were a tinkerers special back in the day. I want to do more mods and videos on the mods as this project progresses and the power band and tuning the Weber are proving to be a bit of a hassle. Not so bad for country roads, but it is weak on the freeway and stalls a lot in city traffic unless I set the choke juuuust right. I might have a leak somewhere in the header, but it is only an issue in stop and go city traffic (fumes in the cab).

[@microfarmers]

I literally disengaged my entire emission system on my 1990 Isuzu PICKUP. No check engine light, stock carb and it runs perfect. 24.24 mpg lots of pep.

[@xanny7373]

on the 4ZD1? if so how’d you do it

[@mikethemike6406]

Best thing I ever did is to remove the itec and the computer along with ALL the smog stuff. A weber carb, headers, electric fuel pump and you have one happy 4ZE1!

[@christianhalla3905]

Isuzu pickup with the exact same setup going on 210,000 miles

[@xanny7373]

cali legal?

[@scannercrash]

Do you have a diagram of the hose setup you use on your Webber? I just swapped my motor to a new 2.3 with a Weber carburetor and I can't seem to get fuel. Just curious what my configuration should be for vac/fuel lines. Awesome videos btw man!

[@devinfouch4649]

That tanks sealed drill a hole in ur gas cap

[@dylankeepers2248]

Are you local to pdx I could def use some tips if your willing my egr pipe cracked and replacing it is almost impossible and I’m not too experienced with egr delete

[@symtex36]

Exhaust gas recirculation EGR. Help the engine warm up faster.

[@shawndoyle6460]

Any videos of the engine components. ... I have the same truck but interested in how your power steering is set up... I would like to put PS on mine ... thanks!

[@blackkatkid]

So I just bought an 86 II trooper with a weber carb, wondering if you still answer questions on this channel

[@thelagmeister]

HAHA. Good luck . I have an 86 2 Door DLX.

[@varbcorp]

can I do this on a California trooper same year and engine?

[@8digitPDX]

Probably not, but maybe. I know it just hit 30 years, which is the traditional cutoff age for smog exemption.

[@evilbeetlekustomscreations4965]

I have a 86 Isuzu pup with 42,000 original miles it was my grandfather's all the lines are dry-rotted want to do the same thing I can't find any information as to can I pass smog in California if I just put a modern catalytic converter and the Weber carburetor with a header

[@xanny7373]

@@evilbeetlekustomscreations4965 did you find out if there’s anything cali legal for this? i have the 87 2.3 and want to do this

[@evilbeetlekustomscreations4965]

@@xanny7373 still haven't messed with it can't really find anyone to hot smog it without wanting five $600

[@xanny7373]

@@evilbeetlekustomscreations4965 i could probably find someone for $100 out here but i don’t wanna try it anyway

[@TheDeadMan3848]

Can I do this with the stock Carburetor ?

[@microfarmers]

I am about to try!

[@SteveCrbn]

What size plugs did you use in the head

[@countrydestroy4673]

Its spark plug thread some oil drian plugs use it as week but with out the new exhaust manifold theres not enough room for the head of the bolt on the front and back plugs

[@Johnny5troopers]

LOL... you have no idea what you're doing..... ROFLMAO!!

[@skylermcmorris2835]

Seems to run pretty good

[@jodywales6760]

wow! This Epic. Mabey I should start smoking crack so this makes gooder sence and stuffs. derp derp durp der derp

[@treyvaughn2619]

Dude you had done a lot of rambling it is informative but you repeat yourself so many times and talk about irrelevant scenarios of the vehicle