 Factory 914-6 Heat Exchangers, Are these repairable? |
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| vintage914racer |
 Dec 21 2025, 07:13 PM
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#1
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Member  Group: Members Posts: 457 Joined: 28-December 03 From: Minneapolis, MN Member No.: 1,473  |
I have a set of factory 914-6 heat exchangers that I will not be using.
One of the boxes has a section that is rusted out and a fair amount of pinholing. The other one has pinholes that can be seen. Are these repairable? What might be a fair price to sell them for to someone looking for original H/Es?          |
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| mepstein |
Dec 21 2025, 07:16 PM
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#2
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914-6 GT in waiting Group: Members Posts: 20,301 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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| NARP74 |
Dec 21 2025, 09:07 PM
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#3
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Senior Member Group: Members Posts: 1,446 Joined: 29-July 20 From: Colorado, USA, Earth Member No.: 24,549 Region Association: Rocky Mountains |
Ben's the guy
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| bdstone914 |
Dec 21 2025, 10:38 PM
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#4
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bdstone914 Group: Members Posts: 5,218 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Yes repairable. I have a set with pin holed areas that Ben quoted at $400-$600 To repair. Another repaired set sold but took a long time to sell. I think the adking price was $1600.
First clean up those burnt oil deposits and get the shells blasted. You may have more holes than you see now. I did. I would be concerned about the pipes. Pressure test them before repairing the shells. Most buyers want really nice looking parts when spe ding big bucks. I have two pairs needing similar repairs. I bought one pair for $600 that I thought was a bargain. I will be selling them either repaired or as is because a got a pair of modified 996 exchangers that flow better for my 2.7. |
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| mb911 |
Dec 22 2025, 05:07 AM
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#5
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914 Guru Group: Members Posts: 7,704 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
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I would expect to repair those for 5-700 as that edge repair is a PIA.
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| 930cabman |
Dec 22 2025, 05:51 AM
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#6
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Advanced Member Group: Members Posts: 4,384 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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I have a set in similar repair and was considering repairing them. Currently a set of headers are getting the job done (partially)
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| rick 918-S |
Dec 22 2025, 06:52 AM
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#7
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Hey nice rack! -Celette Group: Members Posts: 21,147 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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QUOTE(vintage914racer @ Dec 21 2025, 07:13 PM)  I have a set of factory 914-6 heat exchangers that I will not be using. One of the boxes has a section that is rusted out and a fair amount of pinholing. The other one has pinholes that can be seen. Are these repairable? What might be a fair price to sell them for to someone looking for original H/Es? I can repair them for you. Bring them up to me. (IMG:style_emoticons/default/call me.gif) |
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| vintage914racer |
Dec 22 2025, 07:52 AM
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#8
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Member Group: Members Posts: 457 Joined: 28-December 03 From: Minneapolis, MN Member No.: 1,473 |
QUOTE(mb911 @ Dec 22 2025, 03:07 AM) I would expect to repair those for 5-700 as that edge repair is a PIA. Thanks for the confirmation that these are repairable. QUOTE(rick 918-S @ Dec 22 2025, 04:52 AM) QUOTE(vintage914racer @ Dec 21 2025, 07:13 PM) I have a set of factory 914-6 heat exchangers that I will not be using. One of the boxes has a section that is rusted out and a fair amount of pinholing. The other one has pinholes that can be seen. Are these repairable? What might be a fair price to sell them for to someone looking for original H/Es? I can repair them for you. Bring them up to me. (IMG:style_emoticons/default/call me.gif) Thanks for the offer, Rick. I may have another repair I might want your help with, if you're willing (IMG:style_emoticons/default/sawzall-smiley.gif) |
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| 930cabman |
Dec 22 2025, 09:44 AM
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#9
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Advanced Member Group: Members Posts: 4,384 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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Great, I have a couple questions, are the heavy pits on the actual pipes of concern?
and what material is the jacket? TIA |
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| Montreal914 |
Dec 22 2025, 10:06 AM
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#10
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Senior Member Group: Members Posts: 1,983 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California
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QUOTE(930cabman @ Dec 22 2025, 07:44 AM) are the heavy pits on the actual pipes of concern? Same concern as above and does the heavy pitting on the tubes propagate in the heat exchanger section? What is the wall thickness in those spots and when will it bust through feeding toxic gas in the cabin? (IMG:style_emoticons/default/unsure.gif) |
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| mepstein |
Dec 22 2025, 10:19 AM
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#11
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914-6 GT in waiting Group: Members Posts: 20,301 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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QUOTE(Montreal914 @ Dec 22 2025, 11:06 AM) QUOTE(930cabman @ Dec 22 2025, 07:44 AM) are the heavy pits on the actual pipes of concern? Same concern as above and does the heavy pitting on the tubes propagate in the heat exchanger section? What is the wall thickness in those spots and when will it bust through feeding toxic gas in the cabin? (IMG:style_emoticons/default/unsure.gif) The heavy pitting on the pipes is pretty normal for these pieces. Ben has explained it once before but it doesn’t usually mean they are toast. |
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| 930cabman |
Dec 22 2025, 12:43 PM
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#12
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Advanced Member Group: Members Posts: 4,384 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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QUOTE(mepstein @ Dec 22 2025, 11:19 AM) QUOTE(Montreal914 @ Dec 22 2025, 11:06 AM) QUOTE(930cabman @ Dec 22 2025, 07:44 AM) are the heavy pits on the actual pipes of concern? Same concern as above and does the heavy pitting on the tubes propagate in the heat exchanger section? What is the wall thickness in those spots and when will it bust through feeding toxic gas in the cabin? (IMG:style_emoticons/default/unsure.gif) The heavy pitting on the pipes is pretty normal for these pieces. Ben has explained it once before but it doesn’t usually mean they are toast. I picked up a set a year or so ago and sure appears some section loss with the pipes. I am tempted to cut one apart and measure the available wall thickness. |
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