Paperwork/legal issues with engine swap?

sixstringsteve

Well-Known Member
Location
UT
I'm thinking of getting a 3rd gen toyota pickup and dropping in a 3.4L v6 from the tacoma (great engine), but I'm wondering what documentation I'd have to do.

- Do I have to report it to the DMV or anyone else?
- since it's a '93, they test emissions at the pipe, so I don't need to plug it in to the OBD2 port, right?
- the truck has 160k and the engine has 180k. Do I need to disclose this somewhere?

Anything else I missed?
 
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TurboMinivan

Still plays with cars
Location
Lehi, UT
I can weigh in here with some insight, as I have removed the 1.6L hamster from my Miata and am in the process of replacing it with a 5.0L V8 from a Ford Mustang. :D

Call the Utah County Health department more specifically the Bureau of Air Quality, they manage the emissions testing process and regulate the rules for swaps and related modifications.
http://www.utahcountyonline.org/Dept/HealthEnvirAir/VehicleEmissions/index.asp

This is good advice. Whenever I call them (801.851.7600) I always speak to Mike. He is a very friendly guy who is open to the idea of an engine swap and is quite helpful. Here is a summary of what I have been told by him:

1) the recipient vehicle's smog equipment must all remain intact.
2) for any conflict, the recipient vehicle's smog sticker takes precedence.
3) the recipient vehicle must pass the same sniffer test after the swap.

To give you an example, here is how the above rules work out for me:

The 5.0L engine used EGR, but since my Miata's 1.6L did not have EGR then I am not required to install it in my Miata... provided the engine passes the smog test without it. The 5.0L engine also used an air pump where the 1.6L does not, though Mark said it would be a good idea to keep it since it'll help me pass the sniffer test.

I took the above rules into account when choosing my engine swap donor. Had I selected a later (1994+) 1.8L Miata, then I would have been required to swap over the EGR since the 1.8L engine uses it. Since you already have your recipient vehicle, Steve, you're kinda painted into a corner and will have to work with what you have. But you can still choose what engine to swap into it, of course.

So, what smog equipment is on your stock engine?
 

TurboMinivan

Still plays with cars
Location
Lehi, UT
Oh, I forgot to add The Rest Of The Story (tm).

Once the swap is completed, you are required to take it directly to Air Quality for them to inspect and smog test. When they verify that everything is properly functional and that it passes the test, they apply some sort of supplemental decal to the door jamb (or underhood--I forget which) and you are free to go.

After that, any smog tester in the state can perform your annual test and pass you.
 

sixstringsteve

Well-Known Member
Location
UT
thanks turbo, that's the type of general info I'm looking for.

I won't be doing a swap for a long time, but I figured it couldn't hurt to find out.
 

Coco

Well-Known Member
Location
Lehi, UT
You'll have the truck sold before you do the swap :p

But yup, what turbo said. I knew emissions school would come in handy haha
 

Bart

Registered User
Location
Arm Utah
Dat you Dempsey? Good to see you slumming here. Great info. I heard they do not place the emphasis on the donor engine being newer than the recipient vehicle any more as long as it has the emissions system equipment of that came stock with the vehicle and can pass smog. I really want to drop a V8 in the TJ one day.

I can weigh in here with some insight, as I have removed the 1.6L hamster from my Miata and am in the process of replacing it with a 5.0L V8 from a Ford Mustang. :D



This is good advice. Whenever I call them (801.851.7600) I always speak to Mike. He is a very friendly guy who is open to the idea of an engine swap and is quite helpful. Here is a summary of what I have been told by him:

1) the recipient vehicle's smog equipment must all remain intact.
2) for any conflict, the recipient vehicle's smog sticker takes precedence.
3) the recipient vehicle must pass the same sniffer test after the swap.

To give you an example, here is how the above rules work out for me:

The 5.0L engine used EGR, but since my Miata's 1.6L did not have EGR then I am not required to install it in my Miata... provided the engine passes the smog test without it. The 5.0L engine also used an air pump where the 1.6L does not, though Mark said it would be a good idea to keep it since it'll help me pass the sniffer test.

I took the above rules into account when choosing my engine swap donor. Had I selected a later (1994+) 1.8L Miata, then I would have been required to swap over the EGR since the 1.8L engine uses it. Since you already have your recipient vehicle, Steve, you're kinda painted into a corner and will have to work with what you have. But you can still choose what engine to swap into it, of course.

So, what smog equipment is on your stock engine?
 

TurboMinivan

Still plays with cars
Location
Lehi, UT
Dat you Dempsey? Good to see you slumming here.

Yep, you found me. I was hoping to bump into you last Friday night at the newbie run, but I didn't see you (assuming you made it out there).

I heard they do not place the emphasis on the donor engine being newer than the recipient vehicle any more as long as it has the emissions system equipment of that came stock with the vehicle and can pass smog.

That coincides perfectly with what Mark has instructed me about my Miata. As long as the recipient car's original smog equipment setup is still intact and the finished product still passes the same smog test as before, then everything is fine. He didn't even care what year my donor engine was.

One more clarification for anyone reading along: since my Miata has multi-point EFI from the factory, my donor engine must also have it. I cannot drop in a carbureted engine, for example.
 

Bart

Registered User
Location
Arm Utah
Sorry, didn't make it out to the Noob run. Daughter decided she would rather do something else on a Friday night.

Yep, you found me. I was hoping to bump into you last Friday night at the newbie run, but I didn't see you (assuming you made it out there).
 
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