HSR Intake Install - questions!
Thread Starter
Drifting
Joined: Sep 2004
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149.7 - report tommorrow!
Team Owner
Joined: Sep 2003
Posts: 20,179
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Yee Haw! Gonna be fun letting it stretch its legs on the big salt!
So did the HSR do all the talking? Or was the "aero" package to blame?
BTW Might suggest to Rad to take off his fur coat when washing cars in the summer!!
So did the HSR do all the talking? Or was the "aero" package to blame?
BTW Might suggest to Rad to take off his fur coat when washing cars in the summer!!
Last edited by JrRifleCoach; Jul 16, 2007 at 12:29 AM.
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Originally Posted by Carl Johansson - 2007.06.11
Well as far as we can tell - [the Greenwood kit] cost us about
3.5 mph at 145. We ran last month at El Mirage - and went 142.3
(4 runs within .5 mph) . Took off the body kit - left everything else
the same - went back this week and ran 145.7.
It was hotter [this time] - DA about 6000 ft I think, and we didn't
have the tailwind that we had last month - so it may have been an
even bigger difference - but I have no way of quantifying that.
3.5 mph at 145. We ran last month at El Mirage - and went 142.3
(4 runs within .5 mph) . Took off the body kit - left everything else
the same - went back this week and ran 145.7.
It was hotter [this time] - DA about 6000 ft I think, and we didn't
have the tailwind that we had last month - so it may have been an
even bigger difference - but I have no way of quantifying that.
Too bad it didn't push you past 150. I was hoping you'd see more
payback for your efforts.
.
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Originally Posted by Carl Johansson
The Coefficent of drag on that car is 0.32
so drag force = Frontal area X CD x speed squared / 410
is the formula I used:
150 mph = 355
200 mph = 630
225 mph = 800
These are the drag force - not Hp or anything else!
So how much horsepower is required rear wheel - ?
weight x rolling resistance (0.016 i used) + drag force x speed / 410
150 mph = 165 hp - easily doable for any of our vettes
so drag force = Frontal area X CD x speed squared / 410
is the formula I used:
150 mph = 355
200 mph = 630
225 mph = 800
These are the drag force - not Hp or anything else!
So how much horsepower is required rear wheel - ?
weight x rolling resistance (0.016 i used) + drag force x speed / 410
150 mph = 165 hp - easily doable for any of our vettes
Originally Posted by Carl Johansson
Looks about right
Time ... Temp...Dew Pt....Press......Wind....Density...Rel HP
11:00: .. 80ºF .. 55.6ºF .. 29.98" .. SW 10 ... 1843 ... 99.6%
14:00: .. 94ºF .. 49.5ºF .. 29.98" .. SW 8 .... 2666 ... 98.4%
15:00: .. 95ºF .. 50.2ºF .. 29.97" .. WSW 9 .. 2742 ... 98.3%
Carl, my vote is that the engine was under-performing today.
.
Thread Starter
Drifting
Joined: Sep 2004
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Carl "sometimes I tell people 41/2 inches is really 10 inches!" Johansson
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Before this thread slips into the archives, would it help anyone for
us to provide a final summary of parts used and steps taken to make
the swap to the Holley Stealth Ram on Carl Johansson's car?
.
us to provide a final summary of parts used and steps taken to make
the swap to the Holley Stealth Ram on Carl Johansson's car?
.
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Thread Starter
Drifting
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