2.3L Flat-Six-Powered 1968 Porsche 912 Coupe 5-Speed
Presentation
This 1968 Porsche 912 coupe had been modified with a Subaru engine when it was acquired by the seller on BaT in November 2017, and a rebuilt flat-six with 86mm JE pistons and cylinders was installed in 2019. The car is finished in Irish Green over black leatherette and Pepita cloth upholstery, and additional equipment includes a Type 901 five-speed manual transaxle, 15″ Fuchs forged alloy wheels, disc brakes, sport seats, a Blaupunkt AM/FM radio, and a RennShift shifter. This SWB 912 coupe is now offered with the removed flat-four and four-speed manual transaxle, a set of steel wheels, a Porsche Certificate of Authenticity, the owner’s manual, service records from current ownership, spare parts, a car cover, and a clean Texas title in the seller’s name.
The car is finished in Irish Green (213) and is equipped with H4 headlights, bright bumper guards, black windshield wipers, and a single exhaust outlet. the seller notes various dents, a chip in the windshield, and spots of flaking paint.
The 15″ Fuchs forged alloy wheels are mounted with 195/60 Pirelli P6 tires. The car is equipped with an independent front and rear suspension, and stopping power is provided by disc brakes at all four corners. Sway-a-Way adjustable spring plates have been installed, and the rear trailing arm bushings were replaced in 2018. A set of steel wheels with hubcaps is included in the sale.
The 2+2 cabin features sport seats trimmed in black leatherette with Pepita cloth inserts. Appointments include Dynamat sound deadening in the floors, Coco floor mats, a RennShift shifter, a Blaupunkt AM/FM radio, and lap and shoulder belts. There are cracks in the dash.
The smaller-diameter four-spoke steering wheel sits ahead of VDO instrumentation that was previously refurbished by North Hollywood Speedometer and fitted with LED illumination, including a 7k-rpm tachometer, a 120-mph speedometer, auxiliary gauges, and an analog clock. The five-digit odometer shows 61k miles, which is not considered to be accurate. Approximately 1,300 miles were added under current ownership, and total mileage is unknown.
Previously modified with a Subaru EJ25, the car was fitted with a 2.3L flat-six that was rebuilt by Mayo Performance of Euless, Texas with 86mm JE pistons and cylinders and re-ground camshafts in 2019. A replacement fuel tank and level sending unit were installed in 2026 and the dual Zenith carburetors were cleaned and tuned.
Bids & Comments
Sims (The Seller) 187
Oct 1, 2026 · 15:54
Thanks to Bid66 & matthepcat for the bids
matthepcat
Bid
Oct 1, 2026 · 15:50
Bid in the amount of $40,000
Bid66
Bid
Oct 1, 2026 · 15:24
Bid in the amount of $38,500
Sims (The Seller)
Oct 1, 2026 · 02:13
Thanks to everyone for the comments and bids..... I didn't realize the auction had gone LIVE until just a minute ago. Original seats are in storage at present, when I get them back, I'll post some pictures. I'll keep up with questions and comments in a more timely fashion goin forward. Again thanks for the comments, questions and bids s far. Answers to questions (reverse order)
Original Engine ? Yes: sale also includes original 4 speed transmission, wheels and seats
Bowl in pic #58 ?:
magnetic parts bowl, forgot to remove
PDX Bryan
I thought you might see this. Trust you are doing well. Engine in vehicle;
Yes ,,,,a re-built six cylinder 911T.... I believe
Re-built by Mayo Performance, with sight bump in displacement and HP
Short history since I bought the vehicle in 2017:
Subaru engine was in place and running when I purchased it . Radiator was in the frunk with coolant lines running to the rear. Original 4 cyl engine and transmission came with the car
and are included in the sale. Original engine was re-built by Mayo Performance and installed in 2018. (see picture of engine #....recently submitted)
I purchase the non-running 911T engine from Pelican Parts (?). May Performance removed the re-built 4 cyl and installed the re-built 911 6 cyl in 2020. Invoices and re-build info are shown in the Auction Pictures
Original Engine ? Yes: sale also includes original 4 speed transmission, wheels and seats
Bowl in pic #58 ?:
magnetic parts bowl, forgot to remove
PDX Bryan
I thought you might see this. Trust you are doing well. Engine in vehicle;
Yes ,,,,a re-built six cylinder 911T.... I believe
Re-built by Mayo Performance, with sight bump in displacement and HP
Short history since I bought the vehicle in 2017:
Subaru engine was in place and running when I purchased it . Radiator was in the frunk with coolant lines running to the rear. Original 4 cyl engine and transmission came with the car
and are included in the sale. Original engine was re-built by Mayo Performance and installed in 2018. (see picture of engine #....recently submitted)
I purchase the non-running 911T engine from Pelican Parts (?). May Performance removed the re-built 4 cyl and installed the re-built 911 6 cyl in 2020. Invoices and re-build info are shown in the Auction Pictures
matthepcat
Bid
Oct 1, 2026 · 00:25
Bid in the amount of $38,000
lpn2102
Bid
Sep 30, 2026 · 23:11
Bid in the amount of $37,000
Sep 30, 2026 · 22:18
Is that the original engine being included in the sale?
Yellowfinch
Bid
Sep 30, 2026 · 13:58
Bid in the amount of $35,912
swine11
Bid
Sep 30, 2026 · 11:16
Bid in the amount of $35,000
Bangger
Bid
Sep 30, 2026 · 04:15
Bid in the amount of $30,250
matthepcat
Bid
Sep 28, 2026 · 03:35
Bid in the amount of $30,000
Sep 28, 2026 · 03:14
The exact color I have been looking for 🙂
Sep 27, 2026 · 21:30
May I ask the purpose of the bowl in pic#58? Do you have a cat?
Partman55
Bid
Sep 27, 2026 · 04:41
Bid in the amount of $14,000
Sep 26, 2026 · 23:29
My 1968 912 came out of the factory 5 days later and is 12804090 which is 115 912's after this one. GLWTA.
Bid66
Bid
Sep 26, 2026 · 23:04
Bid in the amount of $12,000
swine11
Bid
Sep 26, 2026 · 21:35
Bid in the amount of $10,500
mrjirey
Bid
Sep 26, 2026 · 20:54
Bid in the amount of $9,912
Sep 26, 2026 · 11:23
@PDXBryan don’t lose hope, if a peasant like me can find his way into one, then you can too… I thought I missed my chance but I managed to get one that was listed here. Currently going through it and making it mine. A little underwater with 3 “toys” now so I’ll likely be listing a car here soon once they are ready to go. I knew mine would have some compromise and it’s basically because it’s not the original color and not a 912 anymore… but has a red fan flat 6 IYKYK
I still can’t believe it when I see it in the garage…
I still can’t believe it when I see it in the garage…
Partman55
Bid
Sep 26, 2026 · 10:01
Bid in the amount of $9,500
Sep 26, 2026 · 07:55
@2mAn
The EJ25 Subie motor was a flat-4 and it was the reason I used to daydream about this car when it showed up here back in ‘17. Imagine a 912 with about 70% more power that a peasant like me could actually afford to fix - a freakin’ dream come true! Sure wish I’d had the funds to bid 9 years ago. But now the world’s been made right again and it’s back in unobtainium land where all us dreamers get to watch from the wrong side of the tracks then go home and cry in our pillows. First world tragedy, right? ;^)
The EJ25 Subie motor was a flat-4 and it was the reason I used to daydream about this car when it showed up here back in ‘17. Imagine a 912 with about 70% more power that a peasant like me could actually afford to fix - a freakin’ dream come true! Sure wish I’d had the funds to bid 9 years ago. But now the world’s been made right again and it’s back in unobtainium land where all us dreamers get to watch from the wrong side of the tracks then go home and cry in our pillows. First world tragedy, right? ;^)
rolfn
Bid
Sep 26, 2026 · 04:10
Bid in the amount of $9,120
Sep 26, 2026 · 00:03
@partman55 this has been swapped with a 2.2 flat6 from a 911... its currently 2.3 with the big bore 86mm pistons. This is effectively a SWB 911, even has the 901 gearbox
Sep 25, 2026 · 23:19
912 were 4 cylinders the engine looks like a 911T not a Subaru? Please verify.
Sep 25, 2026 · 20:15
So, curious about where they put the radiator and how they ran the coolant? What was done to modify the fitment of the EJ motor? Was any modification made including cutting or welding to the original chassis or body to accommodate the conversion? Were any of these modifications repaired and or properly brought back to factory spec when reinstalling the 912 motor and trans?
Georgemia
Bid
Sep 25, 2026 · 19:26
Bid in the amount of $5,000
GRN13
Bid
Sep 25, 2026 · 18:52
Bid in the amount of $3,000
Sep 25, 2026 · 18:14
A Subaru motor in a VW bus is one thing, but into a classic Porsche?! Yikes
Sep 25, 2026 · 18:02
Very cool, so this Porsche flat6 was a 2.2 originally, quite the overbore setup. @Sims how would you describe the engine character of this setup? Should be very rev happy. Interesting to go from the subaru flat 6 back to the 912 flat 4 and then to this 2.3... cool stuff. Hope this brings big money!
Sep 25, 2026 · 17:57
Fantastic color, great looking seats, that cluster is gorgeous! And it comes with two engines just in case! GLWTA
Carbguy1
Bid
Sep 25, 2026 · 15:24
Bid in the amount of $1,000
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