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Author Topic: Oil cooler size  (Read 1795 times)

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Offline cossiemk2

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Oil cooler size
« on: October 19, 2009, 22:24:30 PM »
I have a 80C sandwich plate on my engine with 12mm hoses.

But the oilcooler I have is restrictive (loses 1 bar oilpressure) and not that effective as it's quite small.

Thing is as I have huge space issues under the bonnet I can probably only fit a 19 row cooler max under the car.

Is that big enough to cool a 350 hp engine tho?

cheeRS, Jurgen



Offline capri v8 driver

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Oil cooler size
« Reply #1 on: October 20, 2009, 20:06:54 PM »
1 bar drop is alote, are you sure that the cooler is restrictive and not the sandwich plate? the 19 row will be beter than what you have now.
greetz Paul.

Capri V8 Driver.

Offline cossiemk2

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Oil cooler size
« Reply #2 on: October 20, 2009, 21:29:21 PM »
The sandwich plate is a Mocal one.

I thought they were pretty good.

The oil cooler was a freebie but a bit small and maybe caked/blocked inside.

But I think I need one.

I think the other engine blew its piston rings because of the oil overheating?

Offline capri v8 driver

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Oil cooler size
« Reply #3 on: October 21, 2009, 20:02:29 PM »
hmmm, breaking rings due to hot oil? i think that the boost pressure has something more to do with that.
« Last Edit: October 21, 2009, 20:03:19 PM by capri v8 driver »
greetz Paul.

Capri V8 Driver.

Offline cossiemk2

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Oil cooler size
« Reply #4 on: October 22, 2009, 11:55:38 AM »
They're not broken Paul.

They've lost their strenght and are a bit like elastic.  


Offline capri v8 driver

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Oil cooler size
« Reply #5 on: October 22, 2009, 19:38:37 PM »
you really need to heat those piston rings up, to get them to lose there tension. to hot oil its self would not be enough to do that, but it can contribute to a certain degree to the condition off the rings. but the biggest heat is maded in the combustion chamber by ignited fuel and air and pressure, ad some boost pressure.........and you have the recipy for even more heat in the combustion chamber. ad the stock n/a 24v ignition timing for a boosted 24v, and you have even more heat. there is a limit how much heat piston and ring can take before they give up.

i hate to say it, but i guess you crossed that limit.

and if only the piston rings gave up, consider your self lucky. i have seen much more damage by high combustion chamber pressure and heat, that not only ruined the piston and rings, but also the block.



this happend with to much timing on a blown dragrace motor.
« Last Edit: October 22, 2009, 19:53:34 PM by capri v8 driver »
greetz Paul.

Capri V8 Driver.

Offline cossiemk2

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Oil cooler size
« Reply #6 on: October 22, 2009, 21:28:01 PM »
I ran it almost 1,5 years on mappable ECU without problems.

I know oil temps are not the main culprit.

Running 80C intake didn't help    

Got that sorted now.

I'll put up some pics in the project forum soon.

 

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