3.6L conversions and CA smog laws (C.A.R.B) - Page 2

dwelle · 02-04-2018, 07:38 AM

CA is hip to that now, and have heard stories of them cracking down. no personal experience, all my cars are pre-smog for a reason...

Matt Monson · 02-04-2018, 07:55 AM

CO too. You get pulled over with Wyoming or Dakota plates and a CO driver's license youve got some explaining to do.

NoEardGoat · 02-09-2018, 09:37 PM

I am in the long process of rebuilding and installing a 964 3.6l into a 1981sc chassis in CA. I plan on taking it to the Referee.

My exhaust plan is to use 993 heat exchangers (with the flanges flipped) with 993 catalytic converter(s) and no muffler. Hopefully this meets their smog equipment requirements but is questionable because the he’s and cat are from the 993 motor and there will be no muffler (doesn’t fit).

Another potential issue from what I’ve researched is the Stock 964 airbox does not fit into the 911 chassis and I am not sure if the commonly used Evo 964 intake elbow and air filter will be accepted.

An additional challenge will be figuring out the correct way to wire either the oem “hammer” obd 1 port or an obd 2 port of this is required in addition to the CEL (easier to wire).

uwanna · 02-09-2018, 10:09 PM

Quote:

Originally Posted by NoEardGoat

Another potential issue from what I’ve researched is the Stock 964 airbox does not fit into the 911 chassis and I am not sure if the commonly used Evo 964 intake elbow and air filter will be accepted.

the stock 964 airbox will fit in your car just fine. I put a 964 into my '80SC many years ago with the stock airbox with no problem. I am sure many others have as well.

Tbone1209 · 02-10-2018, 04:11 AM

Quote:

Originally Posted by runner4fun

I have a 1982 SC coupe that I am considering doing the same engine swap on. I have spoken with Instant G specifically about the CA emissions requirements for an M64 motor in a CA car. You do keep all the original exhaust system. I plan to contact the local BAR and discuss the issue. As an aside, I am rethinking this plan because several people I've spoken to have advised me to just rebuild the 3L SC engine into a 3.4L (with M64 crank and cams) as that will get me more of the engine I want for my hot rod. One knowledgeable guy said an M64 "is like putting a V-8 in the car". fast but not that fun! I believe Jack Olsen has an M64 in his 1972 911 which he both tracks and drives on the street.........greg

I have an 84 m491 with a 3.8 L built by Mark Kinninger and I can tell you irrefutably, that it's an unmitigated blast!

Unless you are going to daily drive the car don't even worry about California. Just get it registered in Montana....

runner4fun · runner4fun's Garage

I'm a CA resident and just bought a 1983 SC steel wide body coupe with the idea of doing what Goat has planned for his SC. (The car is on a transporter now headed my way from Florida.) I researched the CARB rules this week and spoke with a CARB referee. After the call, I was somewhat encouraged to proceed with the engine swap. I will be very interested to hear how Goat's project goes as the more I read the more I've concluded that a replacement 3.6L M64 rather than a rebuild of the SC 3.0L is really the way to go if possible. Goat: where are you in CA? I'd love to see your car. Thanks, Greg

runner4fun · runner4fun's Garage

Goat, did you delete the muffler because the existing oil tank is in the way? Dave at TRE Motorsports indicated to me that the oil tank has to be moved (into the trunk) to accommodate the muffler.

runner4fun · runner4fun's Garage

Tbone, without waiving any legal privileges, did you have your 84 M491 inspected by the CARB referee? I see you are in SF. Is your engine an OBD I or OBD II?

runner4fun · runner4fun's Garage

BTW, does anyone want to buy a 2007 Ducati S4RS Monster? Whitre with red stripes, full over sized Brembos, floating rotors, CRG parts everywhere and carbon Termignoni side exhaust. Need the garage space.....

F1addict · 10:17 AM

I'm in the middle of this very project with my 83 SC. Mine is a Euro car that already has the BAR sticker so they look very closely when it gets smogged.

I bought a 95 vario ram from Timmons. I just did a test fit yesterday and will probably be pulling it back out to weld in a Patrick rear shelf. It seems very tight against the fire wall.
With that said I made sure the motor serial number was a 95 manual transmission.
I had Timmons leave the AIS on it for the visual, but apparently the wire that runs the blower is used to run the Vario ram so if it doesn't pass that way I'll have to hook it up.
I also plan to have the light for the battery relabeled as a check engine light.
The exhaust is stainless headers with twin cats, but for the initial check I'll probably flip the studs and put on my SC exhaust. I heard from another user that this was what they did.
Toby

OB2 is apparently a nightmare so I would avoid it if you could.

here is a link to BAR engine change guidlines
https://www.bar.ca.gov/Industry/Engine_Change_Guidelines.html

here is a link to BAR engine change guidlines
https://www.bar.ca.gov/Industry/Engine_Change_Guidelines.html

uwanna · 02-12-2018, 10:17 AM

Quote:

Originally Posted by uwanna

the stock 964 airbox will fit in your car just fine. I put a 964 into my '80SC many years ago with the stock airbox with no problem. I am sure many others have as well.

EDIT: here's a pic of my 964 transplant into my '80SC with the stock airbox installed

mradovan · 02-12-2018, 10:18 AM

Toby,

I like what you are doing. Please let us know how this all works out.

Matt

F1addict · 02-12-2018, 10:20 AM

Quote:

Originally Posted by mradovan

Toby,

I like what you are doing. Please let us know how this all works out.

Matt

Fingers crossed. Hope to fire it up soon. I'm sick of not being able to drive it.

Trackrash · Trackrash's Garage

So do they actually run your car when you get it smog checked?

The weird thing now (we are in the republic of Kalifornia after all) is for OBD ll cars. They NO LONGER actually TEST the emissions on OBDll cars. They plug into the OBD port and if there are no codes you PASS. WTF, really?

Does this carry over to 3,6 transplants as well?

runner4fun · runner4fun's Garage

My understanding is that on an OBD-I car, they use the tail pipe sensor and do a visual inspection to confirm there is a catalytic converter. (Presumably this should apply to a replacement engine that has OBD-I.) For OBD-II cars, I believe they plug into the OBD-II port and take a reading without the visual or the tail pipe sensor. Others probably know more than I do, however.

Tremelune · 02:37 PM

The one anecdote didn't even pass legally—OBD wired to a fog light switch. Clever and hilarious, but still not fully above BAR.

I don't think they play out-of-state registrations anymore: https://jalopnik.com/the-pitfalls-of-the-montana-license-plate-scam-1711216059

I face this very issue, as I just moved here with a '95 in my '84. uwanna, did you have to trim the top of the airbox to fit? I've been eyeballing mine and it seems certain to interfere with the hinge.

The muffler is the big pain, from what I can tell. It'll cost thousands to relocate the oil tank to the frunk, and I don't know if any other muffler is truly legal (though a 3.2 or GT3 muffler might look the part if you've got 993 headers).

uwanna · 02-12-2018, 02:51 PM

Quote:

Originally Posted by Tremelune

I face this very issue, as I just moved here with a '95 in my '84. uwanna, did you have to trim the top of the airbox to fit? I've been eyeballing mine and it seems certain to interfere with the hinge.

No modification at all, stock airbox fit just fine. I have since installed a
MAF system instead of the flapper box and gone to the cone type air filter though.