Type IV heat exchanger interchange

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whc03grady
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Type IV heat exchanger interchange

Post by whc03grady » Thu Sep 02, 2010 8:34 am

My engine builder was unable to secure decent heat exchangers for Ludwig's new engine so now I'm shopping.
I know there is the oddball 1979 square port type, so those are out. But what, really, is the difference between carbureted and fuelie heat exchangers? I suspect fuelies can't use carbereted exchangers, but can a carbureted engine use fuelie heat exchangers? Is it just the matter of the f.i. exchangers having some sensor that could be left idle?
Ludwig--1974 Westfalia, 2.0L (GD035193), Solex 34PDSIT-2/3 carburetors.
Gertie--1971 Squareback, 1600cc with Bosch D-Jetronic fuel injection from a '72 (E brain).
Read about their adventures:
http://www.ludwigandgertie.blogspot.com

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poptop tom
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Post by poptop tom » Thu Sep 02, 2010 9:16 am

Here is some good heat exchanger info.

http://www.ratwell.com/technical/Heating.html

Was your Ludwig that is being replaced/rebuilt an actual 1800 '74 type 4? And if so, do you have all of the tinware? If so, getting good used/new '72-'74 HE's is the best way to go.
Mr. Blotto wrote, "Boy - thanks for the offer, but a month in poptop tom's world means 5 years"

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dtrumbo
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Post by dtrumbo » Thu Sep 02, 2010 9:18 am

The heat exchangers themselves don't have any FI sensors. As far as I know, and please correct me when I'm wrong, the only differences are the shape and configuration of the inlet and outlet flanges. Here are some pikchurs, courtesy of The Bus Boys.

'72 - '74

Image

'75 - '78

Image
- Dick

1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.

... as it turns out, it was the coil!

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whc03grady
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Post by whc03grady » Thu Sep 02, 2010 9:47 am

poptop tom wrote:Was your Ludwig that is being replaced/rebuilt an actual 1800 '74 type 4? And if so, do you have all of the tinware? If so, getting good used/new '72-'74 HE's is the best way to go.
The builder machined the AMC 1800cc heads to conform to their new lives as 2.0L heads (the case itself is a GD). Since all the changes were internal, I'm assuming that for fitment purposes this is an 1800cc engine and all the tinware I have--which should be all of it--will fit.
Ludwig--1974 Westfalia, 2.0L (GD035193), Solex 34PDSIT-2/3 carburetors.
Gertie--1971 Squareback, 1600cc with Bosch D-Jetronic fuel injection from a '72 (E brain).
Read about their adventures:
http://www.ludwigandgertie.blogspot.com

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whc03grady
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Post by whc03grady » Thu Sep 02, 2010 9:51 am

dtrumbo wrote:The heat exchangers themselves don't have any FI sensors. As far as I know, and please correct me when I'm wrong, the only differences are the shape and configuration of the inlet and outlet flanges. Here are some pikchurs, courtesy of The Bus Boys.
Yep, that looks like it tears it. The Bus Depot site doesn't have pictures of the later ones, so I couldn't figure it out. I always forget about Bus Boys.
'72-'74 hxs it is.
Thanks.
Ludwig--1974 Westfalia, 2.0L (GD035193), Solex 34PDSIT-2/3 carburetors.
Gertie--1971 Squareback, 1600cc with Bosch D-Jetronic fuel injection from a '72 (E brain).
Read about their adventures:
http://www.ludwigandgertie.blogspot.com

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dtrumbo
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Post by dtrumbo » Thu Sep 02, 2010 10:00 am

whc03grady wrote:'72-'74 hxs it is.
Thanks.
I've heard the early exchangers actually make better heat anyway.
- Dick

1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.

... as it turns out, it was the coil!

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poptop tom
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Post by poptop tom » Thu Sep 02, 2010 10:19 am

dtrumbo wrote:
whc03grady wrote:'72-'74 hxs it is.
Thanks.
I've heard the early exchangers actually make better heat anyway.
And better breathability = cooler running!
Mr. Blotto wrote, "Boy - thanks for the offer, but a month in poptop tom's world means 5 years"

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whc03grady
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Post by whc03grady » Thu Sep 02, 2010 10:50 am

dtrumbo wrote: I've heard the early exchangers actually make better heat anyway.
poptop tom wrote:And better breathability = cooler running!
Well that triple tears it.
Ludwig--1974 Westfalia, 2.0L (GD035193), Solex 34PDSIT-2/3 carburetors.
Gertie--1971 Squareback, 1600cc with Bosch D-Jetronic fuel injection from a '72 (E brain).
Read about their adventures:
http://www.ludwigandgertie.blogspot.com

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LiveonJG
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Post by LiveonJG » Thu Sep 02, 2010 1:46 pm

Also, less parts make it all around easier to deal with.

-John
Keep it acoustic.

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Ritter
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Post by Ritter » Thu Sep 02, 2010 7:11 pm

LiveonJG wrote:Also, less parts make it all around easier to deal with.

-John
Yes, a poop load of a lot easier to seal. Heat exchangers to the heads and muffler. No funky j pipe, etc. It's on my to do list when I ever find a decent used pair at the junk yard. But then I'd actually need to find buses in the junk yard. Haven't seen one in a year now.
1978 Westfalia 2.0 FI

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z
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Re:

Post by z » Wed Apr 13, 2011 6:00 pm

dtrumbo wrote:The heat exchangers themselves don't have any FI sensors. As far as I know, and please correct me when I'm wrong, the only differences are the shape and configuration of the inlet and outlet flanges. Here are some pikchurs, courtesy of The Bus Boys.

'72 - '74

Image

'75 - '78

Image
THANK YOU! I have seen these drawings and always thought "man, if only I could have the names instead of these letters, it certainly would help me learn the name and make it easier to communicate with." Well the answer was Bus Boys. I didn't know these dudes existed and that the info was there. Thanks again. This makes a huge difference. I know this is the technical forum, but I had to share my excitement.
Z

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dtrumbo
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Re: Re:

Post by dtrumbo » Wed Apr 13, 2011 8:31 pm

z wrote:I know this is the technical forum, but I had to share my excitement.
Z
As a moderator, albeit of the Electrical Forum, I hereby grant you permission to share your excitement. Technically speaking, I'm glad you found the information useful.
- Dick

1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.

... as it turns out, it was the coil!

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tristessa
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Re:

Post by tristessa » Thu Apr 14, 2011 1:30 pm

Ritter wrote:But then I'd actually need to find buses in the junk yard. Haven't seen one in a year now.
Even if you did find a Bus in the Windsor Pick & Pull, it'd probably have been stripped of parts before it even got to the main yard ground...
Remember, only YOU can prevent narcissism!

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Bleyseng
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Re: Type IV heat exchanger interchange

Post by Bleyseng » Fri Apr 15, 2011 10:13 am

I do have a set of 76-78 Heat exchangers laying around if you want em.....
Geoff
77 Sage Green Westy- CS 2.0L-160,000 miles
70 Ghia vert, black, stock 1600SP,- 139,000 miles,
76 914 2.1L-Nepal Orange- 160,000+ miles
http://bleysengaway.blogspot.com/

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dtrumbo
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Re: Type IV heat exchanger interchange

Post by dtrumbo » Fri Apr 15, 2011 11:59 am

Bleyseng wrote:I do have a set of 76-78 Heat exchangers laying around if you want em.....
If whc03grady doesn't want 'em, I would like to take you up on the offer. Let me know.
- Dick

1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.

... as it turns out, it was the coil!

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