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> Gauging value of NOS ? 914-6 heater flapper valves
bdstone914
post Feb 23 2025, 08:23 PM
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Picked up a pair of 914-6 flapper valves today that were mounting on some very good heat exchangers today. There is no rust and no sign they ever saw use on an engine.
Dansk new 914 flappers are about $140 each. They will be offered for sale along with the exchangers once I determine a fair value.
The exchangers have little metal missing around the pipes. pipes have coon deep rust pits but exhaust flanges are serviceable. Do no have pictures of them yet.

Pictures to be uploaded shortly.


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Front yard mechanic
post Feb 23 2025, 09:54 PM
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140 a pair! What a deal
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Montreal914
post Feb 23 2025, 10:00 PM
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Bruce, are there any major differences between the /4 valves and the /6 valves other than that large open port in the bell hat?

Nice find! (IMG:style_emoticons/default/smile.gif)
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bdstone914
post Feb 23 2025, 10:02 PM
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QUOTE(Montreal914 @ Feb 23 2025, 10:00 PM) *

Bruce, are there any major differences between the /4 valves and the /6 valves other than that large open port in the bell hat?

Nice find! (IMG:style_emoticons/default/smile.gif)


Not to my knowledge
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bdstone914
post Feb 23 2025, 10:04 PM
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QUOTE(Front yard mechanic @ Feb 23 2025, 09:54 PM) *

140 a pair! What a deal



Still waiting to see when you might make a useful reply to any post.
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Jack Standz
post Feb 23 2025, 10:44 PM
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QUOTE(bdstone914 @ Feb 24 2025, 11:04 AM) *

QUOTE(Front yard mechanic @ Feb 23 2025, 09:54 PM) *

140 a pair! What a deal



Still waiting to see when you might make a useful reply to any post.


Bruce, that goes for you and absolutely everyone else here.

Not to hi-jack your thread, but it might be eye-opening to hear from all the others here that agree. (IMG:style_emoticons/default/smile.gif)
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Krieger
post Feb 23 2025, 11:59 PM
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mb911
post Feb 24 2025, 05:16 AM
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No idea on value they are cool and all but it would be for the purists. To that group probably $250-300 for the pair.
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gereed75
post Feb 24 2025, 08:32 AM
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I have compared four vs six flapper valves. Besides the hole there is a slight difference in the volume of the chamber under the cap. Not sure why

I have been running four flappers with a hole that replicates the six hole for many years now. No discernible problems
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FlacaProductions
post Feb 24 2025, 08:48 AM
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QUOTE(bdstone914 @ Feb 23 2025, 08:04 PM) *

QUOTE(Front yard mechanic @ Feb 23 2025, 09:54 PM) *

140 a pair! What a deal



Still waiting to see when you might make a useful reply to any post.


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DennisV
post Feb 24 2025, 10:53 AM
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QUOTE(Montreal914 @ Feb 23 2025, 08:00 PM) *

Bruce, are there any major differences between the /4 valves and the /6 valves other than that large open port in the bell hat?

There is a slight length of tube and angle difference. Left is new Dansk 914-4. Right is original 914-6. I haven't tried to install the new Dansk yet. I'll be interested to see if the angle makes it hard to fit.
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rgalla9146
post Feb 24 2025, 04:00 PM
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I'll try to do a side comparison 4 vs. 6
I think there is a difference in angle of the arms.
I have to dig up the parts.
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76-914
post Feb 24 2025, 04:37 PM
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$500 for the pair. Most 6 purists have deep pockets and they're getting deeper every year. Just remember what a restored original 914-6 fetches nowadays. GLWS (IMG:style_emoticons/default/beerchug.gif)
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76-914
post Feb 24 2025, 04:38 PM
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QUOTE(Jack Standz @ Feb 23 2025, 08:44 PM) *

QUOTE(bdstone914 @ Feb 24 2025, 11:04 AM) *

QUOTE(Front yard mechanic @ Feb 23 2025, 09:54 PM) *

140 a pair! What a deal



Still waiting to see when you might make a useful reply to any post.


Bruce, that goes for you and absolutely everyone else here.

Not to hi-jack your thread, but it might be eye-opening to hear from all the others here that agree. (IMG:style_emoticons/default/smile.gif)

(IMG:style_emoticons/default/lol-2.gif) Good one! (IMG:style_emoticons/default/beerchug.gif)
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930cabman
post Feb 24 2025, 04:42 PM
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QUOTE(bdstone914 @ Feb 23 2025, 11:04 PM) *

QUOTE(Front yard mechanic @ Feb 23 2025, 09:54 PM) *

140 a pair! What a deal



Still waiting to see when you might make a useful reply to any post.


always entertaining

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ctc911ctc
post Feb 24 2025, 05:28 PM
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As all my kids could could tell you by the time they were 3, something is worth what someone will pay (IMG:style_emoticons/default/lol-2.gif)
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Front yard mechanic
post Feb 24 2025, 09:32 PM
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I take it back how about 100 bucks
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L-Jet914
post Feb 24 2025, 11:21 PM
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I found this information in the PET regarding the differences between -6 and -4 heater flapper boxes.
914-6 Flapper Boxes
901 211 620 00 passenger side
901 211 610 00 driver side

914-4 Flapper Boxes
022 256 205 B driver side
022 256 206 B passenger side
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johnhora
post Feb 25 2025, 12:54 PM
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Since we are talking about the 914-6 flapper boxes I thought it would be a good time to share these photos of some modified flapper boxes.
I took these a few year ago on a very original 914-6 that would come into the shop for normal maintenance.
If you have a real 914-6 you know that many times the firewall shifter joint plastic cover is melted or totally removed.
Well the reason is the hole in the six flapper is turned right on the joint cover and so it gets messed up from heat.
This was a clever way to help with that problem. As you can see small metal tabs were welded on the the flapper to divert the hot air away from the plastic cover. Pretty cool solution. I don't know if this was a factory suggested fix or the guy that worked on this one before me was very creative.
I think I remember hearing/seeing that the 914-6 flapper had the hole in them to help with the cooling of the 914-6. This hole let out a lot more HE heated cooling air from the heat exchangers when the heat was not turned on. The 914-6 HEs are a lot larger that the 4 cyl HEs and the 6cyl creates more heat.



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rgalla9146
post Feb 25 2025, 02:51 PM
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QUOTE(rgalla9146 @ Feb 24 2025, 05:00 PM) *

I'll try to do a side comparison 4 vs. 6
I think there is a difference in angle of the arms.
I have to dig up the parts.


As promised
6 cyl. up front 4 cyl. middle Bay window/ Vanagon rear
These are all OEM parts
I see no difference that would make 4 cyl. flappers un-usable on a 6
The arms are all at the same angle on intact 4 and 6 valves
Adding the hole to a 4 makes a great substitute.
The VW van parts are shown to illustrate the very different position of the arms.
Sorry about the orientation. I took them with sideways and can't correct...can someone fix ?


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