Just checking: take off extra emissions crap?

[Redsquall]

I read that cars over 25 years can be registered as antiques and don't need to follow the emissions regulations completely or something – so does that mean it's possible to take off the extra stuff they added onto control the emissions in order to get more horsepower? I'm guessing not but just thought I would check...

[Josh]

you could take the cat and charcoal canister off. Everything else is pretty necessary to normal engine operation. Wouldn't really give you any noticeable gain in hp tho.

[Nicholas R]

Legality depends on where you live.

The gains will be minimal either way though, as Josh said.

[DMCMW Dave]

Agreed - other than the converter, the DMC engine really has no "extra" emissions equipment that interferes with the operation of the engine. Anything else you remove will probably make it run worse. It's pretty well integrated into KJet.

Eliminating KJet in favor of EFI (or carburetor) fuel delivery is not so much removing emission control equipment as it is re-engineering the engine.

Removing the cat is an interesting area - it's still a federal offence for a commercial shop to remove catalytic converters, age and testing makes no legal difference. You can of course remove it yourself, and since the car is over 25 years old it's no longer tested or inspected in most states (California being a notable exception). But its still not entirely legal to do so.

About the only other thing I can think of is probably the air intake, removing the preheat tube/diverter valve won't cause any failures and may very slightly increase performance under limited circumstances. I don't see where removing the carbon can would make any difference in the operation of the car, other than to make it smellier as the gas tank has to vent somewhere.

[ALEXAKOS]

Deleted.... Double posted sorry

[ALEXAKOS]

You would need a Volvo K-jet head without the check valve exit on it and reroute the vacuum lines.
Just from air intake to distributor.
There are a few kjet heads available in the UK;)

Here is my conversion :
http://tapatalk.imageshack.com/v2/15/02/23/2c029cccb77e84577fbf98bfdcc8d5c3.jpgNote on the right of the kjet the Delo has 3 exits and the Volvo only 2. Plus the head tuning access is open and the air intake of the Volvo is wider only internally so it fits the Delorean air filter.

Dave is right (again)!!! Much smellier exhaust fumes!!!

My conversion included an chaise swat with two separate stainless mufflers on Renault alpine manifolds.
Info here:
http://dmctalk.org/showthread.php?6452-5992-Trip-to-Greece-Restoration-and-Speculations&p=163317&viewfull=1#post163317

[Shep]

Legality depends on where you live.Wildly too. Country, state, etc. Ohio for example lets us be exempt from e-check with historic plates. While technically it's illegal to intentionally remove the cat, if the exhaust or old cat is bad (as was the case with mine), it can be kept off in the replacement process. Never been pulled over for that nor a loud exhaust either, even when I did 5 over in front a cop once (true story -- he pulled behind me even and tailed me for a while, but didn't flash his lights or nothing).

But hey, at least she smells like a 70's musclecar now :biggrin:

[papanoel]

My car has the cats removed. stinks up the garage real quick. thats about the only difference.
Also no smog test in NY for cars over 25 years old.

[Nicholas R]

Wildly too. Country, state, etc. Ohio for example lets us be exempt from e-check with historic plates. While technically it's illegal to intentionally remove the cat, if the exhaust or old cat is bad (as was the case with mine), it can be kept off in the replacement process. Never been pulled over for that nor a loud exhaust either, even when I did 5 over in front a cop once (true story -- he pulled behind me even and tailed me for a while, but didn't flash his lights or nothing).

But hey, at least she smells like a 70's musclecar now :biggrin:

Just FYI, in Ohio, all cars over 25 years old are exempt from e-check, no matter how it's registered.

I do remember taking my car to E-check back in 2003 though when it was first registered. It didn't pass but the guy rubber stamped it anyway... the system was kind of flawed... Ohio eventually did away with E-check in the majority of the state.

There are only 7 counties in Ohio that still have e-check: Lake, Lorain, Geauga, Medina, Summit, Portage, and Cuyahoga. Must be some weird Cleveland/Akron thing. Its only those couple counties up north that still have it. :hmm::tongue2:

Florida on the other hand is completely e-check free! :biggrin: