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914World.com _ 914World Garage _ Thermostat Replacement
Posted by: StarBear May 26 2021, 07:17 AM
74 1.8L question: My thermostat wire is just about broken (1 strand left) so going to replace it. While under there, figure I might replace the thermostat bellows, too, as it's the original one (PN 021119159A).
Ordered a replacement, a Wahler PN 056121113A. Fitment says it fits, but I don't see any attachment bolt thread nor how to attach the wire. Does it have to be modified? Another case of "it should" fit? 
IMHO, it looks more like a coolant fluid thermostat, without attachment and with sealing O-ring.
Of course, my other option for now is just to replace the cable wire and leave well enough alone but would like to carry a spare that COULD, if needed, be used without a machine shop....
Photos (we all know how we LOVE photos):
Original type: 
Replacement: 
Replacement (Full): 
Posted by: Shivers May 26 2021, 07:20 AM
Hahahahaha!
Posted by: JeffBowlsby May 26 2021, 07:25 AM
He-he-he-he. It dont fit. Deception.
If your T-stat is functional why replace it?
Here is one solution: http://www.awesomepowdercoat.com/Porsche_914_thermostat_parts.html
AA has another that has good reviews.
Check Sierra Madre and the other sources.
Posted by: StarBear May 26 2021, 07:30 AM
Thanks, all! That was fast! 
Trusted my teener instinct on this one, but RELIED on experts like you.
Yes, saw the other AA alternate part, but says it needs a wire attachment modifications.
Going to keep ole' reliable for now; going for a hot afternoon shakedown cruise to prep for upcoming Northeast Gathering! 
Posted by: Superhawk996 May 26 2021, 07:31 AM
I'm going to assume that you are serious.
Just re-use use your original. Cable is easily replaced.
Original thermostat is NLA and the aftermarket replacments don't fail safe like OEM is supposed to. Keep OEM as long as the bellows isn't cracked and it's still working.
No need for spare thermostat to be carried around. If you're OEM thermostat failed with the cooling flaps closed (very rare) - you could always clip the control wire and volia - the flaps pop open and you're good to go. Warmup will be delayed and the thermostat could then be replaced at earliest opportunity.
Posted by: iankarr May 26 2021, 07:55 AM
this ⬆
Posted by: bbrock May 26 2021, 08:09 AM
Original thermostat is NLA and the aftermarket replacments don't fail safe like OEM is supposed to. Keep OEM as long as the bellows isn't cracked and it's still working.
The Awesome Powdercoat ones linked above do fail safe like the originals.
No need for spare thermostat to be carried around. If you're OEM thermostat failed with the cooling flaps closed (very rare) - you could always clip the control wire and volia - the flaps pop open and you're good to go. Warmup will be delayed and the thermostat could then be replaced at earliest opportunity.
If using an OEM style with fail safe, carrying a spare is overkill.
Posted by: mepstein May 26 2021, 08:55 AM
Cable is the same as a bike derailleur inner cable. Get one at your local bike shop.
Posted by: StarBear May 26 2021, 09:14 AM
Great advice all. Agree, no need to carry a spare. Thanks ever so much!
Still learning after all these years.
Posted by: ClayPerrine May 26 2021, 11:43 AM
74 1.8L question: My thermostat wire is just about broken (1 strand left) so going to replace it. While under there, figure I might replace the thermostat bellows, too, as it's the original one (PN 021119159A).
Ordered a replacement, a Wahler PN 056121113A. Fitment says it fits, but I don't see any attachment bolt thread nor how to attach the wire. Does it have to be modified? Another case of "it should" fit?
IMHO, it looks more like a coolant fluid thermostat, without attachment and with sealing O-ring.
Of course, my other option for now is just to replace the cable wire and leave well enough alone but would like to carry a spare that COULD, if needed, be used without a machine shop....
Photos (we all know how we LOVE photos):
Original type:
Replacement:
Replacement (Full):
You should have ordered a water pump too.
Posted by: StarBear May 26 2021, 04:48 PM
Posted by: Jonathan Livesay May 26 2021, 06:37 PM
If you do need a new bellows the Awesome Powdercoat one is just like the original and so is their mounting bracket. I got one and they are kind of awesome, and yes a Shimano/Sram derailleur cable works just as well as anything else for probably less than 1/2 the bucks. Just don't get a Campagnolo derailleur cable because they cost twice what the real ones do. 
Posted by: euro911 May 26 2021, 07:58 PM
Posted by: rfinegan May 27 2021, 09:03 AM
Has anyone retrofitted alternate (original na)Thermostat or mounted in a remote location? My headers are in the location of the thermostat . I am currently running without a thermostat :-o
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