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> 718 cayman engine swap, Will the 4 cylinder turbo engine physically fit in a 914
david63
post Dec 13 2025, 11:25 PM
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Searched through threads for a bit and didn’t see anything referencing swapping a 718 cayman 4 cylinder turbo motor into a 914. I imagine in the near future these engines will start showing up for sale from wrecked cars, etc.

Realize that it is water cooled so cooling would require a radiator like the unit Renegade hybrids sells. Will need to get air flow to the turbo. Also lots of questions about if the engine will physically fit in the 914. Wiring, ECU’s, transaxle, on and on. I get it, it would require a lot of fabrication.

The price of doing a 6 cylinder conversion is straightforward but getting pretty expensive.

The turbo 4 cylinder motors advertise over 300 hp at the crank and it would be cool to have a 914 with a 4 cylinder high horsepower motor.

I bet someone has already done this I just haven’t found anything. Who knows, someday this may be a common swap….

What do y’all think about this idea?
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wonkipop
post Dec 14 2025, 03:19 PM
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could be wrong but pretty sure 718 4 is direct injection.
not sure if carbon build up due to EGR in intake ports and manifold is as bad as it is on audi and vw engines but i assume it could be an issue.
just saying.

nice idea though.
a few years back was thinking that a polo aircooled 4 would be my engine of choice for a modded 914. thats if i won the lotto and did not give a second thought about $.
i like the sound of them and i like the idea its lighter than a 6 and preserves the weight factor of why an original 4 was so nice (if not powerful).
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mepstein
post Dec 14 2025, 05:26 PM
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QUOTE(wonkipop @ Dec 14 2025, 04:19 PM) *

could be wrong but pretty sure 718 4 is direct injection.
not sure if carbon build up due to EGR in intake ports and manifold is as bad as it is on audi and vw engines but i assume it could be an issue.
just saying.

nice idea though.
a few years back was thinking that a polo aircooled 4 would be my engine of choice for a modded 914. thats if i won the lotto and did not give a second thought about $.
i like the sound of them and i like the idea its lighter than a 6 and preserves the weight factor of why an original 4 was so nice (if not powerful).

I believe they are $80-100k now. That’s a lot more money for two less cylinders.
One of our customers has an Emory outlaw with a Polo. They really make sense for a 356 since they fit the engine bay so well. While they save 80-100lbs in the car, it’s less of a benefit for a 914 since it’s mid engine and built around a six.
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Spoke
post Dec 16 2025, 10:38 AM
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QUOTE(mepstein @ Dec 14 2025, 06:26 PM) *

I believe they are $80-100k now.


Yikes!

At that point I'd be looking for a nice 911.

This one has 47K on the odometer. Not mine.

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Posts in this topic
david63   718 cayman engine swap   Dec 13 2025, 11:25 PM
Front yard mechanic   Just 30k shy of trying this :driving-girl:   Dec 14 2025, 10:04 AM
Mitox   Very cool expensive idea. Go for it, so we can wa...   Dec 14 2025, 10:35 AM
SirAndy   Looking at some pictures of the engine online, the...   Dec 14 2025, 10:38 AM
worn   Looking at some pictures of the engine online, th...   Dec 15 2025, 06:32 PM
mepstein   If it's your passion to do the swap, go for it...   Dec 14 2025, 11:11 AM
wonkipop   could be wrong but pretty sure 718 4 is direct inj...   Dec 14 2025, 03:19 PM
mepstein   could be wrong but pretty sure 718 4 is direct in...   Dec 14 2025, 05:26 PM
wonkipop   could be wrong but pretty sure 718 4 is direct i...   Dec 14 2025, 05:54 PM
bkrantz   could be wrong but pretty sure 718 4 is direct i...   Dec 15 2025, 08:44 PM
SirAndy   [quote name='mepstein' post='3236891' date='Dec 14...   Dec 16 2025, 04:48 PM
Spoke   I believe they are $80-100k now. Yikes...   Dec 16 2025, 10:38 AM
Ninja   This is one of the swaps I considered. When swapp...   Dec 14 2025, 05:34 PM
scallyk9   Check out the 914 with an early Boxster engine tha...   Dec 14 2025, 10:28 PM
Steve   I rented a 718 Cayman S in Germany. The turbo lag...   Dec 15 2025, 08:31 PM
rgalla9146   Anyone consider a '04 R32 (240 hp) 6 speed ? ...   Dec 15 2025, 10:23 PM
TheRuttmeister   Anyone consider a '04 R32 (240 hp) 6 speed ?...   Dec 16 2025, 07:05 PM
targa72e   Doing a air cooled 6 swap is the easiest (not the ...   Dec 15 2025, 10:47 PM
Kraftwerk   Guy from Quebec who bought my car years ago claime...   Dec 15 2025, 11:55 PM


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