How Much HP Can a BAP Support

[drive_55_not]

Does anyone know what injectors come with the Roush Phase 2 kit?

The Install manual shows part number is 84-12-41-050

The Roush website sez the Port Injectors are 37lbs?

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[robvas]

Does ethanol help the engine cylinder head temp or oil temp? Or real coolant temp if anybody is measuring?

The answer is usually "yes" but the question is, as always, how much? 3 degrees? 10 degrees?

Would like to see something like three laps of a car on a road course with 93 then three laps of the same car on e85 and datalog temps the whole time...

 

[Q6543]

It would be more noticeable in the chamber or on the exhaust headers. EGT reads.

 

[Paul's stable]

Relevant

Cool video just wish they told us what happened. Looked like a lot of blow by coming out of the oil cap before it went pop.

 

[Paul's stable]

It would be more noticeable in the chamber or on the exhaust headers. EGT reads.

You guy's with E85 are so lucky. I live in Canada and we don't have that. We have 94 and that's it.

 

[needforspeedirl]

The Install manual shows part number is 84-12-41-050

The Roush website sez the Port Injectors are 37lbs?

Thanks!
I don’t have the manual since Ford installed it prior to me taking delivery.

 

[needforspeedirl]

Cool video just wish they told us what happened. Looked like a lot of blow by coming out of the oil cap before it went pop.

They needed a catch can!

 

[Junkyard Dog]

It would be more noticeable in the chamber or on the exhaust headers. EGT reads.

Yes, it would be more noticeable there, but I was wondering whether it would be a better fuel for HPDE days, especially in the summer. A typical day is 25-30 minute sessions 5 times for the day. Mustang drivers often complain about overheating problems once they become better drivers. I am hoping one day to be good enough to give my car overheating problems, so I am thinking ahead about how to keep my Dark Horse cooler when pushed on track.

I haven't seen any hard evidence.

I'd like to see what robvas mentioned above. Laps with each fuel and logging coolant and oil temperatures. Then we'd see if it made any difference at all and if so, how much.

The answer is usually "yes" but the question is, as always, how much? 3 degrees? 10 degrees?

Would like to see something like three laps of a car on a road course with 93 then three laps of the same car on e85 and datalog temps the whole time...

 

[robvas]

I'm always a skeptic without data. I have heard people talk about overheating on the road course and some people chime in with 'run e85 it runs a lot cooler'. And all you seem to hear are anecdotes like "I switched to E85 and my fans don't even come on anymore..."

To add to the mix, the HP gain you're going to get from E85 is probably going to nullify any cooling effect because you're making more HP for your cooling system to deal with. And it's not like a carbureted car where the E85 is cooling the intake manifold.

That said, there is a research paper out there that compares exhaust manifold temperatures between gasoline and e85. It was generally a little bit lower with e85 but is it as much as people are expecting?

I would still like to see something on engine coolant temperatures if anyone knows of data. I don't see it making a huge difference but you never know. Also, a stock car with stock cooling, stock thermostat and stock fan settings is going to want to run around 200 degrees no matter what. What about a car with modified cooling systems? What about 50 degrees ambient vs 100 degrees?

 

[Junkyard Dog]

I am not an engineer, but I am having trouble trying to figure out whether there is any relationship to exhaust system temperatures and the temperature of oil or coolant.

 

[Junkyard Dog]

One guy on a Corvette forum anecdotally reporting that he noticed a 10-15° increase in oil temperatures on the road course after switching back to 93 octane.

https://www.corvetteforum.com/forum...cooling-effect-of-e85-on-the-road-course.html

. . . but the he later tells the OP that he does not think he will see any lower temps just from E85 . . .

Shrug

 

[LouG]

I ran MW50 (separately injected 50/50 methanol water mix) in a supercharged, non intercooled MX5. I could then run normal spark advance, not the 5 dgree retard Sebring advised, but engine temps did not change. Any cooling effect seems to be in the charge and combustion areas only.

 

[Q6543]

No, I don’t think you’d see lower coolant or oil temps… you’re talking about a different “circuit” for lack of a better word. Oil and coolant are all gonna be in the low 200’s

we’re talking inside combustion 1300-1500’s

 

[Junkyard Dog]

No, I don’t think you’d see lower coolant or oil temps… you’re talking about a different “circuit” for lack of a better word. Oil and coolant are all gonna be in the low 200’s

we’re talking inside combustion 1300-1500’s

Low 200s? Road race guys in Mustangs are seeing 270, 280 oil . . .

 

[Junkyard Dog]

Actual race cars (for realsies) on slicks seeing CHT of 275-280.

The 275 maximum is with a new, dual pass radiator. The CHT with old radiator hit 280, and they had to back off.

https://trackmustangsonline.com/thr...ng-challenge-car-58.20657/page-16#post-329759

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