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High oil temps
Posted: August 7th, 2012, 4:52 pm
by WhiteFinish
Hi Guys,
There is a fellow Mx-3 driver on the Dutch forum who asked me to get some US advise
I got a problem with my oil Temp.
I just installed a KLDE in a mx3 and everything is workin fine, exept for one thing.
My Oil Temp gets to 130 degrees celcius (266 fahrenheit) when im just drivin sportive not even track style.
The water Temp stays at 90 celcius (194 fahrenheit) and the cooling fan kicks in like it should be.
I checkt the piston rings by takin out the dipstik while running to see if the exhaustgas blows out there and theres nothing.
So i asume that the piston rings are fine.
What could this be ?
Re: High oil temps
Posted: August 7th, 2012, 5:06 pm
by SuperK
The top piston ring can expose oil to 160 °C (320 F)
I don't think the test he performed is necessarily accurate, I'd say that more testing to determine the condition of hte piston rings would be necessary. the dipstick goes pretty low into the oil pan. I would think that most of the excess pressure would be blown through the crankcase.
Re: High oil temps
Posted: August 7th, 2012, 5:18 pm
by RobMinhas
Is he certain his oil temp gauge is accurate?
Re: High oil temps
Posted: August 7th, 2012, 11:31 pm
by Ryan
I'd also cross check the gauge.
My oil temps can exceed 250F, but only if cruising over 4000 RPM on a hot day, or racing on a track longer than a minute or two. I also have an oil cooler delete.
Also, loads in the cylinders at idle are minimal. A 'quick' check on the rings is to do a WOT 2nd gear pull and full engine brake with someone following him looking for any significant smoke.
Re: High oil temps
Posted: August 8th, 2012, 10:18 pm
by bbunkerc397
I have also found that the ebay headers that loop around under the oil pan causes excessive heat in my oil temperatures. I think the oil is breaking down i was going to add an oil cooler to see if it would help. Also a oil pressure sensor would help as well and probably a really good quality oil temp sensor.
Re: High oil temps
Posted: August 9th, 2012, 8:40 am
by Ryan
They should all loop around, thats how they maintain equal secondary lengths for better torque characteristics. What you can do if you're concerned, is wrap the exhaust around the pan area. I did that
Re: High oil temps
Posted: August 9th, 2012, 8:56 am
by bbunkerc397
I was thinking of doing that as well but I thought the pacesetter headers looked better designed, they don't loop back under the oil pan and the bolts are easier to get at.
Re: High oil temps
Posted: August 10th, 2012, 12:32 am
by Ryan
Unequal length headers will make it sound gnarly, and you change the torque compliment due to secondary scavanging. Check out the KL SAE papers, it briefly mentions the effects of secondary length.