oil getting to hot
Mar 11, 2016 | 05:09 PM
#11
TECH Enthusiast
Joined: Jan 2003
Posts: 589
Likes: 0
From: Queens, NY
I use a large Derale cooler up front and most importantly for a street car, a thermostat from Improved Racing to make sure the oil gets up to 180 degrees. The tstat block adapter is a bit pricey but imo if a factory truck has an oil cooler then a turbo truck absolutely needs one. If you've ever driven a C5 Z06 with even a stock motor (they did not come with an oil cooler) and beaten on it you'll see the oil temps rise to the mid 200s real real quick.
Mar 11, 2016 | 07:04 PM
#12
Registered User
Joined: Mar 2016
Posts: 30
Likes: 0
From: Florida/Virginia
Use a fan cooled cooler wired to 220 oil t stat. My LQ9 oil temps would get up to 260/300 pending on ambient temps pulling long grades with heavy loads. I machined a 2x2 cube of aluminum for t stat and oil lines. Installed it in oil supply line to turbo. Temps never went over 230.
Mar 11, 2016 | 07:37 PM
#14
On The Tree
Joined: Oct 2011
Posts: 145
Likes: 0
From: Airzona
Not sure where your getting your info from but the duramax never had a problem with low engine oil temps... in fact it has the opposite. That engine needs better engine oil cooling when towing heavy.
Mar 11, 2016 | 07:44 PM
#15
Registered User
Joined: Mar 2016
Posts: 30
Likes: 0
From: Florida/Virginia
The prototype did.. Never made it to the market. And you are correct... They addressed oil galley issue but change turbo and head cooling galley. Had a big problem splitting head caskets and burning injector tips first two years of market production.
Mar 15, 2016 | 01:15 PM
#18
Thread Starter
TECH Enthusiast
Joined: Apr 2013
Posts: 551
Likes: 1
From: eastern nc
adapter block
Use a fan cooled cooler wired to 220 oil t stat. My LQ9 oil temps would get up to 260/300 pending on ambient temps pulling long grades with heavy loads. I machined a 2x2 cube of aluminum for t stat and oil lines. Installed it in oil supply line to turbo. Temps never went over 230.
Mar 15, 2016 | 01:20 PM
#20
I think this is two separate questions? The oil cooler can be mounted vertically or horizontally, with the inlets and outlets facing up or down. Most front mounted oil cooler setups have 5-7ft minimum of line going to and from the cooler. If you comb the vette forums in the autocross / road racing section, some of the guys have data logged pressure drops before and after adding a cooler and found drops to be negligible. Depending on how far back in the bed you plan to mount the cooler, the mileage of the motor in consideration, and whether or not you've replaced the oil pump, it might behoove you to use a medium volume pump from Melling if the lines going to the cooler are going to be really long.