Aircooled exhaust replacement

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Davegrohl99
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Aircooled exhaust replacement

Post by Davegrohl99 »

Hi

With my engine out in the floor I have decided that I am going to remove the heat excahangers. They work fine but I think they are too old and dangerous a system to use as heating up the cabin. (One too many sleepy road trips in the rain)

Does anyone have any recommendations for an exhaust. Looking to put J tunes out and find some for of wxhaust that might actually help improve performance of the engine.

Thanks!

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1981 Westfalia 2.0 CU engine.
1971 Early Bay Microbus.

Chitts
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Re: Aircooled exhaust replacement

Post by Chitts »

Full stainless speedworks on my 2.0CU running twin webers, sounds great and seems to have improved torque from lower down.

Good luck as they are not a cheap add on

blakeys80
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Re: Aircooled exhaust replacement

Post by blakeys80 »

For your J tubes headers, take a look at these:

https://vwspeedshop.com/product.php?productid=16827

As for the exhaust, I went for the the twin GT one from JK, but there's other options around.

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Davegrohl99
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Re: Aircooled exhaust replacement

Post by Davegrohl99 »

Thanks for the help.

Very expensive for the JTubes.

I have a standard exhaust. I presume it would still attach to these J tubes if I got them?

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1981 Westfalia 2.0 CU engine.
1971 Early Bay Microbus.

george2490
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Re: Aircooled exhaust replacement

Post by george2490 »

Yes. I have them with standard silencer but have a think about cooling tins.

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2.0 CU

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Davegrohl99
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Re: Aircooled exhaust replacement

Post by Davegrohl99 »

george2490 wrote:Yes. I have them with standard silencer but have a think about cooling tins.

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Thanks,

You hardly took a picture of your setup?

In what way will this effect the cooling tins?

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1981 Westfalia 2.0 CU engine.
1971 Early Bay Microbus.

george2490
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Re: Aircooled exhaust replacement

Post by george2490 »

When you remove the heat exchangers the hot air from the tubes goes straight up to your rocker covers.
I made some heat shields that fit between.
Not sure if there is an off the shelf solution.
The other drawback is heating.
I use a webasto.

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Davegrohl99
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Re: Aircooled exhaust replacement

Post by Davegrohl99 »

Okay thanks I forgot about that.

I still think theres a benefit in getting rid of them for safety and for improved flow of air in the exhaust itself.

Have you noticed and positive difference in power output?

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1981 Westfalia 2.0 CU engine.
1971 Early Bay Microbus.

george2490
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Re: Aircooled exhaust replacement

Post by george2490 »

Not sure about power difference. Only ran this engine with this set up never tried the heat exchangers.

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