Possible solution for neverending oil temp issues, am I barking up the wrong tree?
#11
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Putting on aluminum heads on now so I would prefer running a little further away from the upper limit, or thats my thinking anyway.
Okay, so it’s not a rebuilt 500hp, therefore OE tuning specs (carb jetting and etc) are thrown out if the window. Believe it or not, have helped a handful of people tune their motors and oil temp decreased at the same time. Tuned for power and drivability, the oil temps where a nice side result. Do not set up ‘like’ factory carbs to factory jetting. If it’s not oe factory, it’s not oe factory. Most same cfm carbs do not have same fuel/air metering passages and restrictions snd boosters as each other.
#12
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My mechanic bud is pushing towards crossover, no bypass, and no stats. KISS principle and says running cold will be fine.
#13
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Im more paranoid as one day towards the end of this season I sucked in some mud coming off the sandbar and started overheating at cruise. The oil temp alarm came on at 260, I shut down and the motors were dieseling and steaming. Started up and idled for awhile, the motors cooled down, did some slow cruising and the muck cleared out of the engine and everything went back to normal. .
#14
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#17
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I don't get accurate readings since having moved the sender to the thermostat housing awhile back. Am putting on new intake manifolds that have a rear water port so will be relocating them there. Hated having them in the bottom of the block as they were a PITA to remove for winterization and they kept fouling with debris. IIRC when they were in the block I was getting 25 psi with the stats in and around 5 with them out.
#18
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When you use a crossover with out a by pass hose the only water to your exhaust will be from the holes in the thermostat when it is closed. This will also cause high water pressure at that point.
#19
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This is what I run and my temps where I expect them to be. Now my oil cooler is a little small and my oil runs 280 just as it comes out of the oil pump, when running hammer down. I don't check it after the cooler so it goes back in much cooler than that. I run Amsoil 15w50 racing oil and their tech support told me that oil is good to run at 300. At the end of the season my oil is really clean and still hard to see on the dip stick. I have checked all points on the heads and engine with an IR temp gun and my temps are super close everywhere so no hot spots. I do have a Stewart 160 thermostat and I have never seen water temps over 165, even after running wide open for over 10 miles.
#20
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Yes I understand. What I proposed is to either run relief lines from the rear water port of the intake to my exhaust manifolds, or to put a pressure relief valve prior to water hitting the crossover, dumping to the exhaust. Just asking in case anyone has done it before and it worked for them.