 Oil viscosity and engine heating |
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| Bartlett 914 |
 Jul 9 2011, 09:47 PM
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Advanced Member  Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest  |
I am driving from Chicago to Reno today. I did 22 hours in the seat and I have 700 miles to go!
I am having some cooling issues. I feel I am running hotter than I used to. I did have a lean running condition and I think I am out of the woods on this one. I installed an AFM meter. I had to boost the fuel pressure to get to 13.9 to 14.4. The other thing I did was I used Brad Penn 20 W 50 oil. I was running Royal Purple 10 w 40. I used the Brad Penn because it was available and this oil is supposed to be the oil to use (but maybe not the viscosity) Could this be causing a heating problem? I think an external oil cooler may be in my future. FWIW, I was near the red in the early morning cool hours pushing 70. Once I got to west Nebraska and Wyoming, the heat became a real issue. I plan on Being in Reno for more than a week, anyone want to connect up. drop a pm. I would love to hear form anyone here |
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| Joe Owensby |
Jul 10 2011, 03:50 PM
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JoeO Group: Members Posts: 527 Joined: 7-January 06 From: Spartanburg, SC Member No.: 5,385 Region Association: South East States |
I would love to see if the temps came back down a little if you used the -40 oil. I have wondered if the higher viscosity oil could actually make a little more oil flow bypass the cooler and end up with a higher net engine temperature. The cooler bypass valve is opened by higher pressure, so in theory a little higher viscosity oil may make the engine run a little hotter to in effect reduce the pressure by thinning the oil our. Of course this depends on the actual design and condition of the bypass valve. JoeO
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Posts in this topic
Bartlett 914 Oil viscosity and engine heating Jul 9 2011, 09:47 PM
underthetire I think your a little on the lean side still. I sh... Jul 9 2011, 09:55 PM
Bartlett 914
I think your a little on the lean side still. I s... Jul 9 2011, 10:04 PM 914Mels
I think your a little on the lean side still. I ... Jul 9 2011, 10:29 PM Bartlett 914
[quote name='Bartlett 914' post='1506903' date='J... Jul 9 2011, 10:38 PM underthetire You really got problems if your fuel pressure is m... Jul 10 2011, 12:30 PM 914Mels
You really got problems if your fuel pressure is ... Jul 10 2011, 01:23 PM Jake Raby Sounds lean...
Brad Penn dies typically run hotter... Jul 10 2011, 04:10 PM Bleyseng Does the engine ping at all?
what is the engine ti... Jul 10 2011, 04:14 PM Bartlett 914 Hi All.
Well I made here. Damn is it hot here... Jul 10 2011, 09:01 PM Don M check with EBS in Sparks. Jul 11 2011, 07:13 AM brant royal purple oil is a synthetic and does have good... Jul 11 2011, 11:51 AM Bartlett 914
royal purple oil is a synthetic and does have goo... Jul 11 2011, 07:43 PM Dave_Darling
Who (or What)is EBS in Sparks?
Engine Builder... Jul 12 2011, 11:17 AM ArtechnikA
... Sparks, NV. Evidently a suburb of Reno.
... Jul 12 2011, 12:11 PM Vacca Rabite Going up in elevation would make you richer. You w... Jul 12 2011, 03:53 AM rick 918-S I was thinking Vaccum leak. Could be heat related ... Jul 12 2011, 07:06 AM r_towle how is your timing? might be off after a long run ... Jul 12 2011, 02:39 PM Bartlett 914
how is your timing? might be off after a long run... Jul 12 2011, 07:21 PM Cap'n Krusty
how is your timing? might be off after a long ru... Jul 12 2011, 08:12 PM Bartlett 914
[quote name='Bartlett 914' post='1508389' date='J... Jul 12 2011, 09:09 PM messix do you have stock heat exchangers? are the heat du... Jul 12 2011, 07:46 PM Bartlett 914
do you have stock heat exchangers? are the heat d... Jul 12 2011, 07:52 PM Jake Raby Cap'n I am glad to see you post that.. Perhaps... Jul 12 2011, 08:31 PM r_towle I agree, I run 20w50 in the summer and 10w 30 in t... Jul 12 2011, 08:39 PM r_towle get 20w50 oil...
The temp gauge you are reading is... Jul 12 2011, 09:12 PM Bartlett 914
get 20w50 oil...
The temp gauge you are reading i... Jul 12 2011, 09:16 PM r_towle oh, I thought you said you had 10w30 in there now.... Jul 12 2011, 09:28 PM Bleyseng Sounds like changing the dizzy is your problem. Re... Jul 13 2011, 08:00 AM 396 Good luck with your temp concerns.. and congrats o... Jul 13 2011, 08:19 AM Bartlett 914 Thanks for all the replies. The input was helpful.... Jul 26 2011, 11:47 AM Jake Raby Get a real gauge with incremental values. No one k... Jul 26 2011, 06:11 PM |
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