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> 914 2.0 cooling question, Any potential downside to this proposed modification?
parrish911
post May 18 2013, 04:14 PM
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I have a '73 2.0 that is primarily used for auto-x with occasional weekend drives. I live in Tampa, FL. There is a copper bellows type thermostat that is used to control a flapper valve that routes cooling air. The bellows expands with heat and gradually opens the flapper valve, directing more air to the cylinders.

My question, is there any downside to bypassing the bellows and leaving the flapper valve in the always open position? I don't really deal with 'cold' weather and I am not convinced there is any benefit to having this on the engine, given how I am using the car.

I would welcome your thoughts on this.

Thanks,

Steve
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Alapone
post Jun 18 2013, 01:42 PM
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Nathan, thanks for the response. Maybe i am wrong in assuming the thermostat is gone. I have not thought to check if the flaps are free. What happens at cold start is 90seconds to 3 min of happy idling and then the revs drop off and the tach bounces between 0 and 800 rpn at short intervals. This goes on for about ten minutes if left idling or a little less if driven. Does this sound familiar at all? We agree that what i described on the running temp is way too high? I have heard from a couple owners that these cars run hot. I have not gotten a heat measurment yet all i know is what the gauge tells me. Lastly where is the oil cooler located on the car? Like I said I am very new at this.
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parrish911   914 2.0 cooling question   May 18 2013, 04:14 PM
bandjoey   I don't think it matters in hot weather. I ke...   May 18 2013, 04:23 PM
parrish911   Thanks Bill. I was thinking the same thing. Plu...   May 18 2013, 05:54 PM
nathansnathan   Without the thermostat, the engine will take a lon...   May 19 2013, 02:05 AM
SirAndy   Without the thermostat, the engine will take a lon...   May 19 2013, 11:54 AM
Rand   But what do you think is the downside of running ...   May 19 2013, 12:03 PM
Bleyseng   Leave it in as it speeds warmup as VW/Porsche had ...   May 19 2013, 07:50 AM
Drums66   .....Modus Operandi! :idea: :wavebye:   May 19 2013, 11:48 AM
Rand   Yes, as said, it means slower warmup. Would you re...   May 19 2013, 11:51 AM
parrish911   Wow, thanks for all the responses. I will try to...   May 19 2013, 03:19 PM
Dave_Darling   The thermostat is present in all 914-4 engines as ...   May 19 2013, 04:16 PM
Cap'n Krusty   The failure mode of the thermostat would be in the...   May 19 2013, 04:40 PM
ww914   The failure mode of the thermostat would be in th...   May 20 2013, 05:17 PM
Elliot Cannon   My thermostat/bellows have been removed since the ...   May 19 2013, 05:07 PM
mrholland2   My engine installing mechanic installed the flaps ...   May 19 2013, 07:43 PM
SirAndy   The concern wasn't the thermostat as much as i...   May 20 2013, 12:11 AM
bandjoey   My daily drive is 30 miles each way. I don't h...   May 19 2013, 10:13 PM
Dave_Darling   Oh yes, they can get stuck closed! Trust me o...   May 20 2013, 04:29 PM
SirAndy   Oh yes, they can get stuck closed! Trust me o...   May 20 2013, 05:01 PM
Dave_Darling   Have you seen the spring on that thing? One woul...   May 20 2013, 08:51 PM
ww914   Have you seen the spring on that thing? One wou...   May 20 2013, 09:23 PM
SirAndy   Just convince me I am wrong. You are wrong! T...   May 20 2013, 09:29 PM
ww914   Just convince me I am wrong. You are wrong! ...   May 20 2013, 11:08 PM
SirAndy   [quote name='SirAndy' post='1867067' date='May 20 ...   May 20 2013, 11:24 PM
ww914   Well, crow isn't so bad. Thanks Andy for findi...   May 21 2013, 07:57 AM
stugray   I am putting the shrouds on my race engine. I had ...   May 26 2013, 01:12 PM
Rand   I am putting the shrouds on my race engine. I had...   May 26 2013, 07:36 PM
Drums66   After reading this I guess that on an engine wi...   May 26 2013, 07:54 PM
SirAndy   After reading this I guess that on an engine with ...   May 26 2013, 09:55 PM
Alapone   Sorry I have nothing to add on the topic just more...   Jun 18 2013, 11:05 AM
nathansnathan   Sorry I have nothing to add on the topic just mor...   Jun 18 2013, 11:49 AM
Alapone   Nathan, thanks for the response. Maybe i am wrong ...   Jun 18 2013, 01:42 PM
Racer Chris   What you describe during engine warmup is not unus...   Jun 19 2013, 04:55 AM
Alapone   What you describe during engine warmup is not unu...   Jun 19 2013, 07:35 AM
Racer Chris   Hey RacerChris thanks for the help here. Do you t...   Jun 19 2013, 08:03 AM


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