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Search: Posts Made By: Blue71vette
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Forum: C1 & C2 Corvettes
10-21-2017, 06:42 PM
Replies: 19
Views: 5,975
Posted By Blue71vette

warped holley metering blocks

how do you straighten warped holley metering blocks
Forum: C1 & C2 Corvettes
09-07-2012, 12:53 AM
Replies: 31
Views: 7,454
Posted By Blue71vette

Larry, Great picture! I just picked up another...

Larry, Great picture! I just picked up another stationary pole piece at Corvettes of Carlisle. I have started to restore it and will find out first hand how hard it is to realign the stars when...
Forum: C3 General
10-09-2009, 11:42 PM
Replies: 102
Views: 25,669
Posted By Blue71vette

Stan, Thanks for your comments. The red...

Stan,

Thanks for your comments.

The red ZL1 press demonstration car was a coupe not a convertible. This further reinforces your comments above about the Monoco Orange convertible.
...
Forum: C3 Tech/Performance
05-03-2009, 12:14 AM
Replies: 42
Views: 4,720
Posted By Blue71vette

C Road vehicle wind tunnels measure forces...

C

Road vehicle wind tunnels measure forces through the tire contact patches. There is an SAE recommended practice that gives the details. The six axes of forces are resolved into drag force,...
Forum: C3 General
03-16-2009, 01:13 AM
Replies: 25
Views: 1,088
Posted By Blue71vette

In other words, we should all avoid driving on...

In other words, we should all avoid driving on roads in or around modern cars since their computers could fail at any moment?

In my humble opinion, Corvettes will always be desirable cars to...
Forum: C3 General
03-15-2009, 07:11 PM
Replies: 25
Views: 1,088
Posted By Blue71vette

My point was simple, statistically speaking, the...

My point was simple, statistically speaking, the C6's ECM will always keep it in better tune than is possible with the C3 and thus it will run closer to the advertised performance specs than the C3. ...
Forum: C3 General
03-15-2009, 03:49 PM
Replies: 25
Views: 1,088
Posted By Blue71vette

I have driven both cars extensively and the C6 is...

I have driven both cars extensively and the C6 is quicker, faster and handles better than the C3. The C6 has better much gearing C6 has six gears and the C3 only has 4. To get the first gear...
Forum: C3 Tech/Performance
01-11-2009, 08:29 PM
Replies: 53
Views: 10,386
Posted By Blue71vette

Your duffuser looks good. Have you tried adding...

Your duffuser looks good. Have you tried adding some yarn tufts? Anything above 45 mph or so will provide a high enough Reynolds number to ensure it is working at higher speeds. Pay attention to...
Forum: C3 Tech/Performance
01-03-2009, 05:47 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

The Kutta condition is the mathematical theory...

The Kutta condition is the mathematical theory you are referring to. It basically says the flow over the upper and lower surfaces of the airfoil meet at the same time.
...
Forum: C3 Tech/Performance
01-02-2009, 07:37 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

As I said, it is cause and effect. You can use...

As I said, it is cause and effect. You can use Bernouli and say that the air moves from high pressure to low and the resulting movement causes pressure differentials. Or you can use Newton and say...
Forum: C3 Tech/Performance
01-02-2009, 06:44 PM
Replies: 474
Views: 55,116
Posted By Blue71vette

I have never heard of a wind shield collapsing. ...

I have never heard of a wind shield collapsing. The purpose of the OCF cut down windshield was to reduce CD and A in the following equation. D = CD * A * 0.5 * rho * V^2. D is drag force, CD is...
Forum: C3 Tech/Performance
01-02-2009, 05:26 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

:iagree: :iagree: The change in...

:iagree:

:iagree:

The change in underhood pressure will not change lift significantly.

Temperature is far more important than pressure for increasing horsepower. An air box like an L-88...
Forum: C3 Tech/Performance
01-02-2009, 05:14 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

There is a cause and effect relationship between...

There is a cause and effect relationship between pressure and velocity. Bernoulli’s equation is the mathematical model for this phenomenon. The movement of air decreases the pressure and the...
Forum: C3 Tech/Performance
01-02-2009, 05:01 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

As I stated in an earlier post virtually all road...

As I stated in an earlier post virtually all road vehicles are lifting bodies. (I have data for hundreds of vehicles) Lifting bodies tend to have a center of pressure about a quarter of the distance...
Forum: C3 Tech/Performance
01-02-2009, 04:44 PM
Replies: 42
Views: 1,514
Posted By Blue71vette

OK, let's do some simple math here. The surface...

OK, let's do some simple math here. The surface area of a 68 to 72 hood with a wiper door is about 2300 square inches. (Trapezoid with 37 in wide at front, 44 in wide at rear and 57 in long at...
Forum: C3 Tech/Performance
12-30-2008, 01:05 AM
Replies: 53
Views: 10,386
Posted By Blue71vette

The spare tire cover does not cover the full...

The spare tire cover does not cover the full width; the area below the undercar mufflers is open. However, the outboard portions are not as effective as the centerline due to the pressure bleed I...
Forum: Engine Mods
12-29-2008, 01:55 AM
Replies: 7
Views: 15,370
Posted By Blue71vette

Larry, Thanks for the great add! There is now...

Larry, Thanks for the great add! There is now enough information to degree the cam.
Forum: C3 Tech/Performance
12-29-2008, 01:52 AM
Replies: 53
Views: 10,386
Posted By Blue71vette

Bee Jay, Yes I have done this many times, I do...

Bee Jay, Yes I have done this many times, I do automobile aero for a living. The design I recommended is a good generic outline for any performance vehicle. I will look for an image that I can...
Forum: C3 Tech/Performance
12-27-2008, 08:18 PM
Replies: 474
Views: 55,116
Posted By Blue71vette

There is a famous Zora Arkus-Duntov quote. He...

There is a famous Zora Arkus-Duntov quote. He was referring to a C2 Corvette when he said "Car has just enough lift to be a bad airplane”.
Forum: C3 Tech/Performance
12-27-2008, 08:11 PM
Replies: 53
Views: 10,386
Posted By Blue71vette

All that is necessary to measure delta pressures...

All that is necessary to measure delta pressures is a long piece of clear tubing, some water and a ruler. Place one end of the tubing at the high pressure point and the other end at the low pressure...
Forum: C3 Tech/Performance
12-27-2008, 07:46 PM
Replies: 53
Views: 10,386
Posted By Blue71vette

String pots or lvdts (linear varaible...

String pots or lvdts (linear varaible differential transformers) can be used to measure suspension ride height changes. However, since the goal is to determine the deflection at a given speed a...
Forum: C3 Tech/Performance
12-27-2008, 07:33 PM
Replies: 53
Views: 10,386
Posted By Blue71vette

Fashion your aluminum sheet to make a 7 to 9...

Fashion your aluminum sheet to make a 7 to 9 degree angle sloping upward from the front to the rear. Used a 50 mm leading edge radius to allow the flow to attach to the surface. The radious needs...
Forum: C3 Tech/Performance
12-25-2008, 02:46 AM
Replies: 53
Views: 10,386
Posted By Blue71vette

Front air dams are used to shield underbody and...

Front air dams are used to shield underbody and chassis parts from oncoming air. There is a great SAE paper on this subject if you are interested. The way they work is somewhat counterintuitive. A...
Forum: C3 Tech/Performance
12-25-2008, 02:13 AM
Replies: 474
Views: 55,116
Posted By Blue71vette

Yes, Aerodynamic drag force goes up with the...

Yes, Aerodynamic drag force goes up with the square of vehicle speed. In equation form D = C * V * V where C is a constant (see my earlier post). So the drag at 100 mph is D1 = C * 100 * 100. The...
Forum: C3 Tech/Performance
12-24-2008, 05:26 PM
Replies: 474
Views: 55,116
Posted By Blue71vette

Check out Bosch's LapSim software, it is a little...

Check out Bosch's LapSim software, it is a little pricey at $7500.

http://www.bosch-motorsport.de/content/language2/html/3589.htm

This coupled with a $1000 DL1 or the more expensive DL2 can...
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