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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3534
Location: Indiana
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 Posted: Sun Jul 26, 2020 10:36 am Post subject: Stainless Steel Thing Shop Exhaust and heat exchangers |
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I may have asked this before but I can't find it or an answer now.
Thing Shop's Stainless Steel Exhaust system on 74 Thing with Beetle style heat exchangers.
Normally you would have "pods" that the fresh air hoses would hook up to. With this system there are no pods and you have to hookup directly to the exchangers. The exhaust pipes coming out of cylinders 2 and 4 interfere with the routing of the fresh air hoses. You have to "form" them in a way that they touch the pipes. Number 4 is the worse. The standard paper hoses would just burn up. These aluminum/foil hose may last a bit longer. Anybody have a better solution?
Number 2 Hose
Number 4 Hose
I'm going to look into some flexible exhaust piping but I don't think it will be flexible enough. Expecially for number 4.
Possibly wrap exhaust pipes 2 and 4 with some sort of insulation?
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2812
Location: The World's Motor Capital
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| Posted: Sun Jul 26, 2020 11:43 am Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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I use the CSP heater tubes (with a Vintage Speed exhaust).
The tubes will last "forever". I use the regular wide VW band clamps on the heat exchanger ends.
The plastic VW Mexico tubes between the fan shroud and the heat exchanger tubes are a good way to go as well. Mine are over 30 years old, and good as new.
My VS exhaust system came with fiberglass "wrap" on the outlets for #2 and #4. It trapped moisture and caused some minor corrosion on the stainless steel pipes. The sleeves/wrap is now gone; pipes are naked. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3534
Location: Indiana
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| Posted: Sun Jul 26, 2020 12:22 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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| mondshine wrote: |
I use the CSP heater tubes (with a Vintage Speed exhaust).
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Pricey option but looks to cure the problem. I think there would be no problem on number 2 cylinder. Number 4 might still be a problem. Depends on how malleable that flex-tube is. I don't think there is anyway to avoid "forming it around number 4 pipe. I put them on my wishlist.
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2812
Location: The World's Motor Capital
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| Posted: Sun Jul 26, 2020 12:33 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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The crafty fabricator could make these for almost nothing.
I can't weld, so I just used the green stuff. |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3534
Location: Indiana
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| Posted: Sun Jul 26, 2020 1:42 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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| mondshine wrote: |
The crafty fabricator could make these for almost nothing.
I can't weld, so I just used the green stuff. |
You have a 45 year old 181 with:
Fuel injection setup
Fuel pump controller
Relay Panel
High beam Flasher option
Modified dash
Modified "Smart" Brake light switch
Vintage Speed Shifter
Gas Cap Retention setup
Various nice electric modifications/upgrades
Independent oil filter and cool (i believe)
modified air induction
Cruise contol
Onboard Communication system with headset
Various custom made tools
Fancy music/radio setup
GPS with external speaker setup
Glovebox power outlet (not quite sure what the circuit breaker go to)
Steering column mounted fire extinguisher
Modified engine lid
Alternator
....and lets no forget that ever important rear seat mod. 
...as well as a multitude of items I'm probably missing
...and you don't consider yourself are a crafter?
Surely you jest
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2812
Location: The World's Motor Capital
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| Posted: Sun Jul 26, 2020 1:51 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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But...
I can't weld.
Link
Anyway, I owe you some of the inspiration for installing this little gimmick.
I hope it's never used! |
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Semper_Dad
Samba Member
Joined: May 14, 2005
Posts: 3534
Location: Indiana
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| Posted: Sun Jul 26, 2020 5:20 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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| mondshine wrote: |
Anyway, I owe you some of the inspiration for installing this little gimmick.
I hope it's never used! |
Cool, how did you attach yours? I was thinking about using some rare earth magnets. Don't want to drill holes.
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2812
Location: The World's Motor Capital
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| Posted: Sun Jul 26, 2020 5:49 pm Post subject: Re: Stainless Steel Thing Shop Exhaust and heat exchangers |
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Magnets will never work.
The plastic tube is extremely stiff, and installing the thing is like wrestling a powerful snake.
Mine is attached to the "ceiling" of the engine compartment in the shape of the letter "S" with 3/4" rubber sleeve P clips. I did this so the BlazeCut would be directly over where the fuel is.
Sketch:
The red circles indicate the location of fuel connections (for my CIS fuel injection). All of the fuel connections are either Banjo or JIC.
Gene Kisner posted some photos of his installation a while back; his just makes a loop around the perimeter of the engine compartment "ceiling". Genes car has a completely stock fuel system.
Good luck, Mondshine |
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