My thoughts exactly!
They tested a bunch of different types. The OEM 6-blade fixed fan killed 30 HP, slightly worse than a 6-blade plastic flex-blade fan..
Stop in for a cup of coffee
- Thread starter toolmanmike
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They tested a bunch of different types. The OEM 6-blade fixed fan killed 30 HP, slightly worse than a 6-blade plastic flex-blade fan..
I just didn't know it was THAT much. And, as they pointed out in the clip, that's at a modest rpm. At 7,000, its probably a LOT more.
I suppose you don't really need the fan at normal cruising speeds if you don't live in Arizona? We rarely get more than 80 degrees.
ScampMike
Despicable Damn Yankee
I wouldn't lose it all together though - get caught in traffic when it's 86 out and eventually you will over heat
ScampMike
Despicable Damn Yankee
I have had people tell me that with the fan, the 727 and the Ford 9" I am probably losing at least 40HP and probably more like 60 - or more...
at least. they claim it takes 45 hp just to turn a ford 9 inch
ScampMike
Despicable Damn Yankee
huh - there goes 75 right off the bat then - add in the 727 (which I have to guess isn't a whole lot) and you could make a case that I am making 80 or 90 more HP than I dyno-ed at...
It only Matters when you get to the Stripe !!!
ScampMike
Despicable Damn Yankee
how true it is
when I was working as a dyno tester, we normally figured on a 25-35% drop in power at the rear wheels vs flywheel power depending on transmission and type. More power loss in new autos than older ones.
@ScampMike what's your rear wheel number
ScampMike
Despicable Damn Yankee
but now I see why the PO had a 100 NOS shot on it - had to make up for what he was losing through the drive train..
ScampMike
Despicable Damn Yankee
I don't remember the exact # but it was just shy of 400
yeah probably a good assumption. here's some numbers for you though.
my 99 Cummins 4wd was making 467 hp at the rear wheels, when we pulled the engine and put in on an engine dyno the shop had finally bought, we hit 571 hp
so you're probably around 510-520 flywheel
zkx14
Duster De-ruster
no, but soon
ScampMike
Despicable Damn Yankee
and if I were going to race the car I would be trying to "fix" it - but it's just for fun so a few little tweaks maybe but I am not going to chase that dog around..
ScampMike
Despicable Damn Yankee
well, it's 55 here - it must be dang nice out down there!
yeah. people get too hyper about numbers. There's tips and tricks to dyno-ing that can lead to big gains easy. For me, I want consistent numbers verses peak numbers. My goal is 550 flywheel and if i continue to follow the combo IQ52 posted, he broke 600 with his. Now, my combo is gonna be slightly different as I'll be running aluminum heads that flow just a tad less than his. so I should be fairly close. Either way, should make for a fun ride. and that's what matters to me.
Yup.. Nice and Frothy Here....
That's what she said...
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