Author Topic: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor  (Read 1606 times)

Offline wll17057

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1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« on: June 30, 2024, 11:13:42 PM »
Hi everyone.

Any question is a good question...even this one.  I am stumped.  Here are our car specifics:

8T01T225520 (1968 Metuchen 200 CID 6-cyl / Coupe 3:20 rear axle three-speed manual) - literally a no option car with only wheel covers and white walls.  No AC, No power anything, No automatic transmission.

My question - what is a Thermactor, more importantly, how do I tell if our car is equipped with Thermactor parts?  Pictures would be extremely helpful.

I keep seeing "for cars with Thermactors...." but I am lost.

Sorry for this overly simple question.  Any input will be appreciated.

Bill Leonard

Bill Leonard
1968 Metuchen NJ 2-Door Hardtop
200-1V I-6 Engine
DOM:  07/24/68
Tahoe Turquoise w/ Black Interior

Offline wll17057

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #1 on: June 30, 2024, 11:39:44 PM »
This would have helped.  The engine / compartment for our 1968 Coupe.  I am "thinking" we do not have a Thermactor??
Bill Leonard
1968 Metuchen NJ 2-Door Hardtop
200-1V I-6 Engine
DOM:  07/24/68
Tahoe Turquoise w/ Black Interior

Offline krelboyne

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #2 on: July 01, 2024, 12:15:30 PM »
It is a smog system. Basically an exhaust air injection via a belt driven smog pump.
Manual transmission Ford / Mercury cars and light trucks, normally had the Thermactor smog system in 1968.
I am sure that google would have a better explanation.
Scott Behncke - Carcheaologist
West Coast Classic Cougars
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1968 GT/CS 302-4V San Jose 05B
1968 Cougar XR7 Dearborn 09A

Offline Deuce

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #3 on: July 01, 2024, 01:04:07 PM »
Your pic does not show a Thermactor system; e.g., no belt driven air pump, valves, hoses or air injection fittings.  What state was the car originally purchased?

You may be able to find more specific info about 68 Mustang 200 I6 in this forum. 
Deuce
1967 C-code Hardtop Coupe, C-4, AC, PS, T/E; SJ built Nov 30 1966, DSO 71___Unrestored
2008 Premium GT Coupe, 5-speed, rear spoiler delete, HID headlamps, well-optioned, built Oct 23 2007, RC 72

Offline 67gta289

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #4 on: July 01, 2024, 02:35:11 PM »
I just posted a document that should help as well.  https://www.concoursmustang.com/forum/index.php?topic=29844.new#new
John
67 289 GTA Dec 20 1966 San Jose
7R02C156xxx
MCA 74660

Offline Coralsnake

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #5 on: July 01, 2024, 03:31:42 PM »
I think it unusual for the 200 cylinder cars to get Thermactor. There were some.

Do you have a build sheet for the car?

Offline Coralsnake

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #6 on: July 01, 2024, 03:40:03 PM »


It would look similar to this 1967

Offline rockhouse66

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #7 on: July 01, 2024, 06:49:09 PM »
I think it unusual for the 200 cylinder cars to get Thermactor. There were some.


Pete - I agree with your comment.  I was surprised to learn that some 6-cyl cars got the Thermactor.
Jim
'66 GT FB

Offline jwc66k

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #8 on: July 01, 2024, 07:27:34 PM »
As far as I remember, ALL US destined cars in 1968 required SMOG equipment. That being said, what is the DSO of your Mustang? It's on the door data plate.
Pictures of Mustangs are wonderful. They are in "color". They are without Ford part numbers. Go to this forums library and locate "Ford Car Parts" (aka the MPC). Several links are available. It is a copy of the service document used by dealerships in 1975 for our Mustangs. If you go to the illustrations section 94.1 page 20, it will show you a drawing of what your car should be equipped with for smog stuff.
Jim
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline J_Speegle

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #9 on: July 01, 2024, 07:32:40 PM »
Your pic does not show a Thermactor system; e.g., no belt driven air pump, valves, hoses or air injection fittings.  What state was the car originally purchased?

Would not matter what state the car was delivered in. By 68 emission requirements were Federal not state like in the 3 prior years. Later in 70 plus there were differences,  due to additional - over Federal - requirements for California and some other regions.


Have about two dozen books (Ford and servicing ones) on the subject Have field a fair number of questions from California  BAR - Bureau of Auto Repairs in reference to Emission systems on Fords from the 60's a speaker in front of the State Senate related to standards and annual/biannual state inspections in the state

In 68 the requirement for small blocks and 6 cylinders on what transmission was ordered

In allot of locations annual and biannual inspections did not include a check of these systems so removing them was over looked. There is often differences in other parts of the engine and attachments between the Thermactor and non-Thermactor cars. Recall my first MCA show on the east coast and I was instructed to take it "easy" on anything related to Thermactor systems.  Did have a discussion with one non- AC 289 68 car owner where I went through a list of things that identified the engine and parts. He eventually admitted that the engine he had in the car came from a Thermactor AC car.


Many parts have been replaced on the engine below but the "big" parts are there. Hard to find a 6 cylinder Thermactor equipped engine and especially out of a car.









Other pictures on a nice unrestored example are available for viewing in the Unrestored Picture Section of the site.

Look for 1968 section then

- 68 T code Dearborn - Unrestored Picture Thread Thermactor





- Early 68 T code San Jose Coupe - Unrestored Picture Thread non-Thermactor original California car just for comparison. There are some additional T code 68 there also



« Last Edit: July 01, 2024, 07:35:09 PM by J_Speegle »
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline jwc66k

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #10 on: July 01, 2024, 08:26:25 PM »
Here's the drawing from Ford Car Parts. Ford base numbers are present. A LOT (yes it is TWO words) more detail is included.
Jim
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline 67gta289

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #11 on: July 01, 2024, 09:02:06 PM »
In the document I uploaded to the library, on page 3 there is a table that indicates that for all six cylinder engines, the IMCO (IMproved COmbustion) system was used for the automatic transmission equipped models, where as the Thermactor system was used for all standard (manual) transmission equipped vehicles.  This includes passenger cars and trucks.

Multiple pages of descriptions, with diagrams are included starting on page 8.
John
67 289 GTA Dec 20 1966 San Jose
7R02C156xxx
MCA 74660

Offline Coralsnake

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #12 on: July 01, 2024, 09:05:26 PM »
Correct not all 1968 cars were required to have smog.

The 302 automatics used the IMCO system which does not use an air pump

A build sheet will have the engine code that will identify the specific configuration of the engine

That is why we know all 1968 Cobra Jet cars received smog
« Last Edit: July 01, 2024, 09:08:43 PM by Coralsnake »

Offline 67gta289

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #13 on: July 01, 2024, 09:38:11 PM »
Correct not all 1968 cars were required to have smog.

The 302 automatics used the IMCO system which does not use an air pump

A build sheet will have the engine code that will identify the specific configuration of the engine

That is why we know all 1968 Cobra Jet cars received smog

Technically none of the 1968 cars "have smog", but they produced emissions that contributed to it.  All of the 1968 cars had some form of exhaust emission control - either of the IMCO or Thermactor design - based on requirements.   To use the vernacular, all 1968 cars were required to comply with new exhaust emissions regulations, and they all "have smog" controlling systems of varying solutions.
John
67 289 GTA Dec 20 1966 San Jose
7R02C156xxx
MCA 74660

Offline rockhouse66

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Re: 1968 Metuchen 200 CID 3spd no option coupe / Thermactor
« Reply #14 on: July 02, 2024, 08:16:41 AM »
Interesting photos Jeff.  I thought all the 6-cylinder smog pumps used the straight nipple on the back but the one in your photo has the elbow...??  Note that the posted illustration shows a straight nipple.
Jim
'66 GT FB