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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 10:05 am Post subject: Re: 1979 Federal Bus Exhaust |
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Here is the sticker. It does say Catalyst but it doesn't say California.
_________________ Der Kleiner Kampfwagens
Last edited by jhicken on Mon Apr 12, 2021 12:31 pm; edited 1 time in total |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 12:26 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Alright, I have more to add. A better view of the system that I currently have on my Federal bus [not CA legal]
And here is what I believe is a complete California '79 exhaust system.
And here is what the Federal exhaust system looks like.
So if I can use my current heater boxes/manifolds, it looks like I only need the '79 Fed only crossover pipe, the cat and muffler. I believe both the cat and muffler are available new. Also, considering the car has federal, stickers on it, the cat shouldn't need to be CARB approved. Is this correct? _________________ Der Kleiner Kampfwagens
Last edited by jhicken on Mon Apr 12, 2021 12:54 pm; edited 1 time in total |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50338
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Posted: Mon Apr 12, 2021 12:43 pm Post subject: Re: 1979 Federal Bus Exhaust |
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jhicken wrote: |
Alright, I have more to add. A better view of the 72-74 exhaust system that can be use on a '79 square port motor [not CA legal] |
The heater boxes you show are square port and are not 72-74. Note that some of the exhaust parts of 80-83 aircooled Vanagons are very similar to '79 Bay exhaust pieces and could be made to work if need be. |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 12:56 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Wildthings wrote: |
The heater boxes you show are square port and are not 72-74. Note that some of the exhaust parts of 80-83 aircooled Vanagons are very similar to '79 Bay exhaust pieces and could be made to work if need be. |
Yes, correct, I need to stop referring to it as that, only the muffler is '72-74. _________________ Der Kleiner Kampfwagens |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 12:59 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Here is what I believe I need to work with the heater boxes pictured above. Is this correct? Is there anything else [besides the muffler and tail pipe]?
_________________ Der Kleiner Kampfwagens |
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JaimeH Samba Member
Joined: April 24, 2012 Posts: 265 Location: Canterbury, NH
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Posted: Mon Apr 12, 2021 3:01 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Yes. To get your exhaust back to '79 Federal you will need everything shown there. Most everything is available aftermarket except the crossover pipe.
You may need other parts if you're required to have an EGR system in place. _________________ 1978 Transporter 2.0 FI, BA6
Special Thanks to Razor's Customs, Boscawen, NH |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 3:22 pm Post subject: Re: 1979 Federal Bus Exhaust |
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JimmieH wrote: |
Most everything is available aftermarket except the crossover pipe. |
Other than the above drawing, will an 80-83 Vanagon crossover pipe fit? It looks close.
_________________ Der Kleiner Kampfwagens |
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JaimeH Samba Member
Joined: April 24, 2012 Posts: 265 Location: Canterbury, NH
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Posted: Mon Apr 12, 2021 3:24 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Yes. The crossover was '79-83. _________________ 1978 Transporter 2.0 FI, BA6
Special Thanks to Razor's Customs, Boscawen, NH |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Mon Apr 12, 2021 3:25 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Sweet! _________________ Der Kleiner Kampfwagens |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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pittwagen Samba Member
Joined: November 08, 2005 Posts: 765 Location: North of the 49th parallel
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Posted: Wed Apr 14, 2021 6:58 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Just curious as to how you will incorporate the O2 sensor in your exhaust setup. And in order for that to work, do you still have the CA ECU and wiring harness installed? And is the full throttle micro switch still functional on the throttle valve housing? All required for a proper CA system. |
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obieoberstar Samba Member
Joined: March 07, 2002 Posts: 1126 Location: Tucson
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Posted: Wed Apr 14, 2021 7:36 pm Post subject: Re: 1979 Federal Bus Exhaust |
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I found some good info on the 1979 exhausts in the green Bentley Repair Manual. Engine section, page 15.
also saw this in the classifieds. looks to be a '79 California exhaust, not 78.
https://www.thesamba.com/vw/classifieds/detail.php?id=2445420 |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Wed Apr 14, 2021 10:54 pm Post subject: Re: 1979 Federal Bus Exhaust |
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pittwagen wrote: |
Just curious as to how you will incorporate the O2 sensor in your exhaust setup. And in order for that to work, do you still have the CA ECU and wiring harness installed? |
Considering my car was originally a Federal car, I think I may try to go that route. It may be easier that trying to retrofit the CA parts. Thanks. _________________ Der Kleiner Kampfwagens
Last edited by jhicken on Wed Apr 14, 2021 10:57 pm; edited 1 time in total |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Wed Apr 14, 2021 10:57 pm Post subject: Re: 1979 Federal Bus Exhaust |
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obieoberstar wrote: |
I found some good info on the 1979 exhausts in the green Bentley Repair Manual. Engine section, page 15.
also saw this in the classifieds. looks to be a '79 California exhaust, not 78. |
If my current plan doesn't work out, I will for sure be checking that out. It's not that far to pick up. Looks like I still may need a muffler and egr, but the rest looks pretty good. Thanks! _________________ Der Kleiner Kampfwagens
Last edited by jhicken on Thu Apr 15, 2021 11:17 am; edited 1 time in total |
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pittwagen Samba Member
Joined: November 08, 2005 Posts: 765 Location: North of the 49th parallel
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Posted: Thu Apr 15, 2021 7:40 am Post subject: Re: 1979 Federal Bus Exhaust |
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If you are absolutely sure that your bus is federal you will not need the O2 sensor. The O2 sensor came with the CA exhaust. The emissions sticker on the inside of the engine lid will say that the vehicle conforms to US federal and California regs if it is a CA bus. That is what my bus indicates. It is definitely a CA bus. When I bought it all the CA parts were intact - exhaust, electronic distributor ECU etc. One of the very last 79's to come into California.
Have you decoded your M plate? That will once and for all determine which set up you need and may be handy if you get into any dispute with the CA testing folks. |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Thu Apr 15, 2021 10:28 am Post subject: Re: 1979 Federal Bus Exhaust |
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pittwagen wrote: |
If you are absolutely sure that your bus is federal you will not need the O2 sensor. The O2 sensor came with the CA exhaust. |
I'm 99% sure it's a Federal Bus. I got it when I was in New Jersey and the folks I got it from were the original owners. I've since repainted it so the stickers on the engine lid no longer exist but I'm in the process of getting new non-CA stickers to replace them. It also does not say California on the VIN sticker. Now I decoded the M-Plate but I don't see where it indicates Federal or CA unless there is a special code for CA in which I don't think I have.
_________________ Der Kleiner Kampfwagens |
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JaimeH Samba Member
Joined: April 24, 2012 Posts: 265 Location: Canterbury, NH
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Posted: Thu Apr 15, 2021 11:08 am Post subject: Re: 1979 Federal Bus Exhaust |
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I think 027 is M-Code for late bay CA emissions.
Your engine pics show the EGR port on the plenum. That’s Federal only for ‘79. _________________ 1978 Transporter 2.0 FI, BA6
Special Thanks to Razor's Customs, Boscawen, NH |
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pittwagen Samba Member
Joined: November 08, 2005 Posts: 765 Location: North of the 49th parallel
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Posted: Thu Apr 15, 2021 7:38 pm Post subject: Re: 1979 Federal Bus Exhaust |
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Well, first of all the destination is a dead give away - New York. Mine says San Francisco. Second is the 027 M-Code as JimmieH says:
027 Compliance with exhaust emission standards M 157/M 251 California 211-234, USA - California
So lose any thoughts of using the CA exhaust. It is cumbersome, restrictive and contains many parts that are "unobtanium". In addition to the exhaust parts, there are at least 3 unique pieces of left side tin.
I recently removed all the unique left side exhaust parts etc. and went with a left side federal heat exchanger and tin, a 4 into one header with a Hedman collector with an O2 bung and a turbo muffler and tail pipe. So I run the CA computer, harness, O2 sensor and VW electronic distributor. It runs great. I do need to run some Air/Fuel ratio tests just to be sure of what is happening.
And as well, we have not had smog testing here in BC since 2015. |
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airschooled Air-Schooled
Joined: April 04, 2012 Posts: 12721 Location: on a bike ride somewhere
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Posted: Sat Apr 17, 2021 9:30 am Post subject: Re: 1979 Federal Bus Exhaust |
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Buy that van crossover pipe, it has an EGR flange and everything. Instal it, with a muffler, and RUN A PRE-TEST. This will tell you what tuning needs to be done, which parts need inspection, how close you are, AND the most critical piece of the puzzle… It will tell you about the shop. You will be able to get a feeling for their knowledge, work ethic, and desire to work with you on this puzzle.
All of this could be for nothing if you've got architectural issues in the engine, so it's nice to get readings before spending thousands. Make SURE the cat you want is also available before spending money on parts to instal it…
Like I said before, no smog shop in California cares about what pipes you have. All they look for are the components specified on the stickers, nothing else.
Robbie _________________ Learn how your vintage VW works. And why it doesn't!
One-on-one tech help for your Volkswagen:
www.airschooled.com |
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jhicken Samba Member
Joined: October 24, 2003 Posts: 9466 Location: Fallbrook, CA
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Posted: Sat Apr 17, 2021 9:41 am Post subject: Re: 1979 Federal Bus Exhaust |
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airschooled wrote: |
Like I said before, no smog shop in California cares about what pipes you have. All they look for are the components specified on the stickers, nothing else.
Robbie |
Got it, thanks! _________________ Der Kleiner Kampfwagens |
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