Oil bearing clearance high WHP
#123
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Join Date: Dec 2007
Location: Netherlands
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Update
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Std oilpump..…Miles……....WHP…………… still running ….Cause
jerryd87………...… 0.0035 / 0.0038...…………………….15w40 / 320 /revup.…...…...….10-13k …...600………………...... Yes …….
BJMax1………………0.0017 / 0.0018 ……………………....10w40 / 266 / Yes……………….. 1.5-2k …..…630 ………………….… No ………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ………………..……..10w50 / 230 / Yes ……………… Zero New ..>650 …………………Waiting to start on this topic.
RayFx…………….…0.0020 / 0.0021 ……………………....10w60 / 230 / revup……………….. 2.5k ….....…560 ………………….… No ………… Rod and main bearing spung.
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Std oilpump..…Miles……....WHP…………… still running ….Cause
jerryd87………...… 0.0035 / 0.0038...…………………….15w40 / 320 /revup.…...…...….10-13k …...600………………...... Yes …….
BJMax1………………0.0017 / 0.0018 ……………………....10w40 / 266 / Yes……………….. 1.5-2k …..…630 ………………….… No ………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ………………..……..10w50 / 230 / Yes ……………… Zero New ..>650 …………………Waiting to start on this topic.
RayFx…………….…0.0020 / 0.0021 ……………………....10w60 / 230 / revup……………….. 2.5k ….....…560 ………………….… No ………… Rod and main bearing spung.
Last edited by bjmax; 03-04-2014 at 05:37 AM.
#126
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iTrader: (4)
no my temp was in F, i see between 140-180 degrees fahrenheit with occasionally hitting 190. engine oil starts to break down past 165 degrees(well specifically it begins to oxidize which limits its ability to lubricate) and the rate of oxidation doubles every 18 degrees F. at 266 degrees F engine oil has lost about 26% effectiveness, if i was running 320 degrees f my oil would have lost around 96-98% effectiveness. its getting close to the thermal failure of alot of street oils. oxidation cannot be filtered out either
sheer strength sees major hits with temp also, also once subject to heat the oil dosnt recover if you run it at 266 and it degrades say 25% over the course of 3 hours run time then the engine sees 200 degree temps, it wont be a degradation of 100% oil effectiveness no matter how long the car cools down it will start at that same 75% effectiveness. thats a pretty realistic figure too if not conservative
also keep in mind i saw about 20-30 degree higher temps using 10w30 rotella t5(syn blend) vs my standard 15w40 rotella t3(plain ol dino) why the t5 only stayed in the engine 800-1000 miles
sheer strength sees major hits with temp also, also once subject to heat the oil dosnt recover if you run it at 266 and it degrades say 25% over the course of 3 hours run time then the engine sees 200 degree temps, it wont be a degradation of 100% oil effectiveness no matter how long the car cools down it will start at that same 75% effectiveness. thats a pretty realistic figure too if not conservative
also keep in mind i saw about 20-30 degree higher temps using 10w30 rotella t5(syn blend) vs my standard 15w40 rotella t3(plain ol dino) why the t5 only stayed in the engine 800-1000 miles
Update
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Standard oilpump..…Miles……....WHP…………… still running ……….Cause
jerryd87………...… 0.0035 / 0.0038 …………...…………………….15w40 / 320 /revup.……...…...….10-13k …...600………………...... Yes …………….
BJMax1………………0.0017 / 0.0018 …………………………………....10w40 / 266 / Yes………………….. 1.5-2k …..…630 ………………….… No ………………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ……………………………..……..10w50 / 230 / Yes ………………… Zero New ..>650 …………………Waiting to start on this topic.
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Standard oilpump..…Miles……....WHP…………… still running ……….Cause
jerryd87………...… 0.0035 / 0.0038 …………...…………………….15w40 / 320 /revup.……...…...….10-13k …...600………………...... Yes …………….
BJMax1………………0.0017 / 0.0018 …………………………………....10w40 / 266 / Yes………………….. 1.5-2k …..…630 ………………….… No ………………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ……………………………..……..10w50 / 230 / Yes ………………… Zero New ..>650 …………………Waiting to start on this topic.
Last edited by jerryd87; 03-06-2014 at 05:28 AM.
#127
Registered User
iTrader: (4)
before machine work my engine had 110k on it and was around .0022 rods and .0023 mains, the g35 im rebuilding atm was around similar milage and around .0020 and .0022 respectively not completely sure what is up with the mains wearing faster since they have more power per bearing placed on them but they are also are larger in diameter.
Last edited by jerryd87; 03-06-2014 at 05:24 AM.
#128
Registered User
iTrader: (4)
holy **** 10w60 on such tiny clearances is insane lol
Update
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Std oilpump..…Miles……....WHP…………… still running ….Cause
jerryd87………...… 0.0035 / 0.0038...…………………….15w40 / 320 /revup.…...…...….10-13k …...600………………...... Yes …….
BJMax1………………0.0017 / 0.0018 ……………………....10w40 / 266 / Yes……………….. 1.5-2k …..…630 ………………….… No ………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ………………..……..10w50 / 230 / Yes ……………… Zero New ..>650 …………………Waiting to start on this topic.
RayFx…………….…0.0020 / 0.0021 ……………………....10w60 / 230 / revup……………….. 2.5k ….....…560 ………………….… No ………… Rod and main bearing spung.
Name…………….Clearance main / Rod …………..Oil W and / oil temp F / Std oilpump..…Miles……....WHP…………… still running ….Cause
jerryd87………...… 0.0035 / 0.0038...…………………….15w40 / 320 /revup.…...…...….10-13k …...600………………...... Yes …….
BJMax1………………0.0017 / 0.0018 ……………………....10w40 / 266 / Yes……………….. 1.5-2k …..…630 ………………….… No ………… Rod bearing.
BJmax2………………0.0028 / 0.0030 ………………..……..10w50 / 230 / Yes ……………… Zero New ..>650 …………………Waiting to start on this topic.
RayFx…………….…0.0020 / 0.0021 ……………………....10w60 / 230 / revup……………….. 2.5k ….....…560 ………………….… No ………… Rod and main bearing spung.