| Author |
Message |
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
 Posted: Wed Jan 10, 2024 8:10 am Post subject: Type 3 Thermostat & Flaps |
 |
|
OK folks, I'm rebuilding my 1972 ish 1600cc engine and have fitted the thermostat and hooked up all the linkages to the flaps, including the spring. I have checked the thermostat and it appears to be working as it should i.e. filling the gap within the bracket when hot. My problem is that the movement of the flaps is not that much, they will go from closed to only about 20mm open, when hot. Is that enough of an opening or should they go to fully open? Any advice/suggestions would be very welcome.
Don |
|
| Back to top |
|
 |
akokarski
Samba Member
Joined: May 24, 2004
Posts: 1903
|
| Posted: Wed Jan 10, 2024 9:18 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
Hi Don,
should be fully open like this
Link
|
|
| Back to top |
|
|
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
| Posted: Wed Jan 10, 2024 12:15 pm Post subject: Re: Type 3 Thermostat & Flaps |
|
|
| Thanks or the video. I thought that was what it should do but mine is not opening more than about 20 mm and the thermostat appears to be working OK. |
|
| Back to top |
|
|
gt1953
Samba Member
Joined: May 08, 2002
Posts: 13850
Location: White Mountains Arizona
|
| Posted: Thu Jan 11, 2024 10:41 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
check for the free movement of all of the stuff...Nice video for sure
_________________
Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
|
| Back to top |
|
|
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
| Posted: Thu Jan 11, 2024 2:37 pm Post subject: Re: Type 3 Thermostat & Flaps |
|
|
| All connections are free and moving OK. I have managed to get it to open a bit more, still not fully open but it might be enough. |
|
| Back to top |
|
|
Zwitterkafer
Samba Member
Joined: November 17, 2007
Posts: 880
Location: Lanark County, Ontario, Canada
|
| Posted: Mon Jan 22, 2024 9:26 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
For sure the parts are all original to the engine? There were different versions of both the thermostat rod, and the flap control rod. Maybe if a rod is too short the flaps can't be adjusted to fully open?
_________________
"Criticism comes easier than Craftsmanship"
- Zeuxius, 400 BC |
|
| Back to top |
|
|
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
| Posted: Mon Jan 22, 2024 11:29 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
| I have gone ahead and bought a new style (Mexican) thermostat and fitted it. The flaps are opening as they should now. Thanks everyone for your help. |
|
| Back to top |
|
|
akokarski
Samba Member
Joined: May 24, 2004
Posts: 1903
|
| Posted: Mon Jan 22, 2024 11:34 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
Did your old thermostat expand and contract the full length? Maybe it was bolted too high up and did not take advantage of complete expansion?
There were a few threads on new style thermostat and how they fail in closed position ie flaps closed not sure if that’s the same one you bought |
|
| Back to top |
|
|
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
| Posted: Tue Jan 23, 2024 1:19 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
| akokarski wrote: |
Did your old thermostat expand and contract the full length? Maybe it was bolted too high up and did not take advantage of complete expansion?
There were a few threads on new style thermostat and how they fail in closed position ie flaps closed not sure if that’s the same one you bought |
The old thermostat is supposed to open up to 46mm my one only went to 42.2mm. That might have been enough but I didn't want to chance it. It was the new style that i bought and I had to modify the bracket to make it fit. |
|
| Back to top |
|
|
akokarski
Samba Member
Joined: May 24, 2004
Posts: 1903
|
| Posted: Fri Mar 15, 2024 10:04 pm Post subject: Re: Type 3 Thermostat & Flaps |
|
|
No it is not enough. It should be fully open
It’s hard to see the thermostat and angle of the flaps but they are horizontal. Also not the hole in the right flap. That is where rubber stopper supped to be to prevent flaps from hitting the ceiling of the opening.
Can you take a picture of the flaps the lever between cylinders 1 and 2 and thermostat? I think there maybe something flipped or binding
Anton |
|
| Back to top |
|
|
Trekker182
Samba Member
Joined: February 14, 2014
Posts: 99
Location: United Kingdom
|
| Posted: Sat Mar 16, 2024 2:51 am Post subject: Re: Type 3 Thermostat & Flaps |
|
|
| akokarski wrote: |
No it is not enough. It should be fully open
It’s hard to see the thermostat and angle of the flaps but they are horizontal. Also not the hole in the right flap. That is where rubber stopper supped to be to prevent flaps from hitting the ceiling of the opening.
Can you take a picture of the flaps the lever between cylinders 1 and 2 and thermostat? I think there maybe something flipped or binding
Anton |
Hi Anton, Thanks for your response nd advice. I decided that the best solution was to buy a new thermostat which is now fitted and the flaps open fully. The ngine is now fully rebuilt and back in the car. Thanks again Don. |
|
| Back to top |
|
|
|
