Big oil opinion from a ford enganeer....

[mschn99]

i called our FSE today. he is very familliar with the big oil system. he said he has two relatives that were playing with it 10 years ago, and run it to this day, and also have replaced a lot of parts and a few motors from the excess stress. he stated, just like some of you guys who run it have, that the system in and of itself does not cause the damage....its the fact that with that strong and crisp of a feeling power band, you tend not to be able to keep your foot out of it and thus with a better performing fuel system it causes issues to present themselves long before they ever should, and that the factory pump is also part of the "de-tuned" condition that most of us know is presant on the superduty 7.3. he also gave me a laundry list of reasons why someone who doesnt have the money to fix problems should not do it. he also stated that his modded 2000 7.3 with no big oil(which out runs his stock 05 6.0.....must be nice to make six digits) would outrun his brothers truck that had the big oil on it. he gave me a lot of technical info, hes an enganeer....he gets paid well for the amount of knoledge he has to have, and he stated that this is not a mod for 95% of diesel owners looking for power. im not gonna get into the points he brought up, as these guys running it are gonna want to try to massacre what someone with a 6 year degree had to tell me.....and im done posting on this, you guys can say what you want and discuss it all you want, but my opinion is i would not reccomend this for most of the guys on here..........take that for what its worth and from what i have learned....this is a good mod for making a very strong running truck, so if you are not worried about any of the things i have given for negatives on the system....then i would say go for it....

[stomper2]

Good info Marc. I like the power, but I know how a heavy right foot can drain a bank account. I think I'll look for other ways to get the numbers I want.

[twildman]

When you say he is very familar with the big oil system, which one in particular would that be?

As far as his non-big oil truck outrunning his brothers with big oil, that really isn't saying much depending on what other mods his brother's truck has vs what he has.

[drmiller100]

well, that was less then informitive.

don't run it. you don't need it.

eveyrone that has ever tried it, kept it.

[mschn99]

Originally Posted by drmiller100

well, that was less then informitive.

don't run it. you don't need it.

eveyrone that has ever tried it, kept it.

ive noticed that you seem to not like posts people make on here or the way the forum is run by your many negative posts....but it seems pretty smooth and awsome to those who enjoy it and nobody is forcing you to look at it........just my two cents.....Marc

[bighunter]

Is running big oil basically the same as running a 18k unit? Ive tried reading other threads about this but still havent found a clear answer.

[twildman]

Originally Posted by bighunter

Is running big oil basically the same as running a 18k unit? Ive tried reading other threads about this but still havent found a clear answer.

Not even in the same ball park.

All the 18k does is trick the icp sensor into thinking it needs more from the hpop at a lower rpm that it does. The power drops off drastically when you get into a higher rpm.

Adding the extra pump allows the hpop to keep the pressure to 3000 or so throughout the entire rpm range.

[drmiller100]

Originally Posted by bighunter

Is running big oil basically the same as running a 18k unit? Ive tried reading other threads about this but still havent found a clear answer.

nope. they do very different things. the 18k unit causes the HPOP system to run excessively high oil pressures ALL the time, whether the engine can benefit from it or not. But, when you really try to get horsepower out of the engine at WOT, full boost, you will still run into the pump limitations. The limitations cause the high pressure oil to fall off, which means teh injectors are using less then optimal pressures to operate.

Basically, the stock HPOP oil pump is almost always plenty of pump for stock engines. But, if you want to get more power out of the engine, eventuallly you will reach a point where teh stock HPOP can't pump any more fuel utilizing the stock injectors.

Big oil is adding pump capacity to the system. If you combine this with a good programmer, the programmer reads the throttle position, and cranks up the pressure off idle to give more throttle response midrange.
At WOT, Full boost, the big oil pump allows the injectors to continue injecting at 3000 psi like they were designed to. This allows better atomization and more power and potentially less heat.

[mschn99]

Originally Posted by drmiller100

potentially less heat.

please explain on this....a hotter and cleaner burning fire is hotter in the cylender...but no or little unburnt fuel is cooler in the exhaust....so im not understanding the "potentially".....im not being a smart alek....im just curious as to what your referring to......Marc

[drmiller100]

"potentially less heat."

so, if we go on the premise that the same amount of actual fuel is injected no matter the HPOP oil pressure. that is premise one, and the programmer dudes can sure step up and tell me if this premise is wrong.

if we inject at 3000 psi HPOP, then we will get great atomization, adn more power in the combustion chamber.

if we inject at less then that, our atomization is less. this means that some of the fuel is still burning as it goes out past the exhaust valve.
It also means that some of the fuel never does get burned, hench the black smoke.

does all the fuel burned in teh combustion chamber result in less heat then most of the fuel burned by the time it gets out past the exhaust valve????

"Potentially." (smile!!!!)