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> '75 Heater Fan Parts and Hook Up
euro911
post Apr 15 2011, 12:00 AM
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I didn't get a complete car when I bought my '75. Have acquired most of what was needed, but I'm finally trying to get heat into the car (just in time for summer, good timing, eh?) finding out a few heating items are needed.

This is what it looked like when purchased

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euro911
post Apr 15 2011, 12:14 AM
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I recently disassembled the fan, cleaned and painted it, ready to install it.

Attached Image

It only has a single outlet (unlike the one on my wife's '71 - with two outlets) and I don't know if it uses a 'Y' connector to get fan air into the two j-tubes? (IMG:style_emoticons/default/confused24.gif)
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AndyB
post Apr 15 2011, 05:33 AM
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IIRC later MY 75-76 had the Y connectors added again. Mine is an earlier MY 75 and doesnt have it. I know they are available from the usual places. Hope this helps.
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type47
post Apr 15 2011, 05:42 AM
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I think MY75-76 did have the "Y" for hoses to both sides of the motor but will defer to experts as I can't tell from the PET 202-15 about the blower motor and hoses. At the good Dr's site you probably could find some diagrams of the parts and info in their catalog...
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jim_hoyland
post Apr 15 2011, 06:36 AM
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Mark,

I see the Y connectors sold at the G & R almost every year. I removed my heather fan after installing SS heat exchangers. Within 2 minute of starting and pulling back on the red heater lever, heat coming into the cabin. Doesn't leak when closed.
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SLITS
post Apr 15 2011, 07:01 AM
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Factory decided it didn't need both exchangers, so they went to a single feed. Splitter is available to feed both of them.
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76-914
post Apr 15 2011, 07:57 AM
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So you only need one, huh? No wonder mine works so well. Yes, they do have a splitter that mounts on the fan shroud, itself. Contrary to Jim's car mine does not leak warm air into the cabin.
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Sleepin
post Apr 15 2011, 09:27 AM
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The 75 and 76 exhaust was just that much more efficient. (IMG:style_emoticons/default/rolleyes.gif)

Plenty of heat just using one side though.
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jim912928
post Apr 15 2011, 09:35 AM
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my 75 had the Y connector. Should be able to get one on here if you do a WTB in classifieds...just saw one on ebay also....here is the link:

http://cgi.ebay.com/ebaymotors/Porsche-914...es#ht_500wt_749
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euro911
post Apr 15 2011, 10:53 AM
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The famous 'Bat Mobile' has early style S/S H/E, hence two j-tubes. I thought about only hooking up one side and capping off the other, but I remember someone else telling me that it could cause overheating on the capped side.

Thanks for all the input ... I'll keep me eyes open for a 'Y' at G&R
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Sleepin
post Apr 15 2011, 12:14 PM
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Let me know Mark, iffin you really need one and if I can find my extra, it is yours. (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/popcorn[1].gif)
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Drums66
post Apr 15 2011, 12:24 PM
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QUOTE(euro911 @ Apr 14 2011, 11:14 PM) *

I recently disassembled the fan, cleaned and painted it, ready to install it.

It only has a single outlet (unlike the one on my wife's '71 - with two outlets) and I don't know if it uses a 'Y' connector to get fan air into the two j-tubes? (IMG:style_emoticons/default/confused24.gif)


....Excellent detail job on the fan!
(IMG:style_emoticons/default/thumb3d.gif) (IMG:style_emoticons/default/thumb3d.gif) (did they come like that ?lol)
(IMG:style_emoticons/default/bye1.gif)
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Dave_Darling
post Apr 15 2011, 03:52 PM
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The 70-72 fan has two separate outlets, on opposite sides of the shroud.

The 73-74 fan has a single outlet, which was ducted to the left-side exchanger only. The top of the J-tube on the right side was capped off with a plastic cap and a hose clamp.

The 75-76 fan has a single outlet, but that outlet has a Y fitting on it. The outlet replaces the part you can see in the photo that has a square inlet and a round outlet; on the later fans it has two round outlets.

It sounds like early 75s used the 73-74 style of fan, which presumably means the right side J-tube is capped off. You can do that pretty easily (I think a spray paint cap fits well) as a permanent solution or as a temporary one until you get the Y.

--DD
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