914 V8 oil temps on track car, feedback requested Options

[dlee1967]

I was seeing what I thought to be rather high oil temps on my street/track 305 Chevy powered 914. About 220 degrees-spikes to 240. Now that I installed a new 350, I've added an external oil cooler with thermostatic fan to help the situation, but have not hammered the car yet as we are still breaking it in.

What oil temps are the other V8 guys seeing? I haven't found it necessary to put an external cooler on the wife's street car, but I believe I am pushing it with the track car. My only frame of reference in an old A1 GTI that used to see this same range.

Any feedback?

David Lee in Houston, TX

[MecGen]

Hey man

How about a pic of this sweat ride of yours...

In my summer here, seeing 220 is not a panic...I never seen over 250 without some problems...somewhere.
But there are so many factures involved with oil vrs coolant specs

QUOTE

but I have a wilder cam, valves and heads on the track car

What kind of Hp are we talking about ? I'm interested (IMG:http://www.914world.com/bbs2/html/emoticons/ar15.gif) anything over 300Hp gets a oil cooler at my shop, with a t-stat.
Tight tolerences will give you an overall overheat condition, usually followed with extreme pre-ignition = bad . Don't ask how I know.... Laffing Pontiac 400 stage 2- dynoed at 486hp...(IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) I don't think this is your case here .
What I look for on Hi output motors is not only the high end specs, but the split. I am just guessing here but heres a few thoughts your way

Overall cooling
Heat transfer, oil to coolant.
Heat tranfer , motor to oil/coolant.

I suspect your oiltemps are a real concern, I am uncomfartable, with your hot oil pressures...I donno, if it was mine I wouldn't be satisfied with it, from a new motor. I don't think the problem is mechanical as much as the temps are breaking down your oil. High Volume Pumps are a must and yours is a great choice ! Are you using a t-stat for coolant or wide open?.
If you bring down your overall temps I would expect a real improvement everywhere. My chums 450Hp daily driver 76 Blazer 4X4, run a 160 tstat, full coollers. with no probs in 90+ temps. Oil will heatup faster then coolant and after 2?? deg it will start to climb at a higher rate then coolant, at what temp it starts, you would have to research at little, I would be guessing.
Depending on your estimated Hp you might have to go with Aluminum heads - (IMG:http://www.914world.com/bbs2/html/emoticons/chair.gif) with hi compression motors, combustion chambers temps rise big time. They also help removing heat.

So if it was mine I would start at the beginning.
Motor output, head temp...
Heat transfer from motor to liquids
Heat transfer from liquids to coolers
Heat transfer from coolers to air (out)

You might just have to find a week link and tweek it, but it sounds to me like you are on the ball.... (IMG:http://www.914world.com/bbs2/html/emoticons/pray.gif)
There is a member mesix that probably has more experience then me, and he a HP guy, maybe he will chime in.
But then again I write so slow there probly was 100 responses by the time I hit Send

Keep me informed
Later
Joe

(IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif)