3000 hrs at wot?

hotcobra03 · Aug 9, 2007

i remember reading that when they built the 03 cobra engine that they ran it for 3000 hrs at wot on a bench test ..was that on 1 motor or all of them..my ls1 buddy says im crazy..help me prove him wrong even if that how they tested 1 motor, any help?

Uncle Meat · Aug 9, 2007

They did numerous run tests like that. Initially they used the standard aluminum 4.6 block like the GT has, but they found it wasn't durable enough for use on the new supercharged Cobra motor so that's why they went to cast iron.

U.M.

djtech · Aug 15, 2007

I've heard they do WOT testing when designing an engine but 3000 hours sound excessive. That is 125 days!

UM--
What happened to the aluminum block in testing? While I have not researched myself directly I've not seen any evidence that the iron block is needed around the stock power levels of the 03 Cobra

Uncle Meat · Aug 15, 2007

djtech said:
I've heard they do WOT testing when designing an engine but 3000 hours sound excessive. That is 125 days!

UM--
What happened to the aluminum block in testing? While I have not researched myself directly I've not seen any evidence that the iron block is needed around the stock power levels of the 03 Cobra

They claimed to have durability issues with it. I'm not exactly sure what specific failures were reported if any though.

U.M.

thomas91169 · Aug 20, 2007

hell if they did more than 30 seconds of WOT they would have figured out they needed to fix the cooling issue on what, cylinders 7 and 8?

i could imagine 30 hours of testing, bringing the motor from idle, up the rpm band under load, back down again, wot, holding certain rpm points, and repeat, all being computer controlled and monitored around the clock. i could see lubrication issues, oil breakdown from excessive heat, etc, from anything longer.

3000 hours is insanely excessive. 125 days is 1/3 the year! even the 'El Es Juan built by the hands of god, could not last.

Uncle Meat · Aug 20, 2007

I'll see if I can find the link again, but I believe the actual WOT run was 1000 hours straight.

U.M.

Silver2003Cobra · Aug 21, 2007

this is from "Iron Fist, Lead Foot"

To further strengthen the engine, a decision was made to go with a nearly indestructable cast iron block, rather than the aluminum block found in the 2001 Cobra.

"It was only a little more durable, but you know, at that point, I had to go with the best parts I had." Coletti stresses. At that point we'd just spent all this money on the rods, so do you want to go with this block that's just five or ten percent less capable? I say no. It has nothing to do with money - hell if it had anything to do with money I never would have put those rods in there. I'll tell you, two of those rods cost more than a whole block"

also, in the book they talk about the 300 hour test.. not 3000...

tomustang · Aug 21, 2007

Uncle Meat said:
Initially they used the standard aluminum 4.6 block like the GT has, but they found it wasn't durable enough for use on the new supercharged Cobra motor so that's why they went to cast iron.

U.M.

That's because Ford doesn't know how to make an aluminum V8 engine

Pretty sad ain't it?

thomas91169 · Aug 21, 2007

Silver2003Cobra said:
also, in the book they talk about the 300 hour test.. not 3000...

now is that 300hr continual useage (idle, wot, constant rpm, under load, etc) conditions or 300hrs at WOT only?

EXTRPR50 · Aug 25, 2007

Thats not true, Ford just came out with an alum. block that isvery strong, its from FRPP. anyone know the name of this block, motor?

EXTRPR50 · Aug 25, 2007

Here it is..
Engine Block: "Aluminator" 4.6L shortblock, M-6010-A46SC

hotcobra03 · Sep 12, 2007

im still looking for the story i read.....i remember them talking about the aluminum block blowing up during the wot test and thats why they went with the iron block

3000 hrs at wot?

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