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Topic Review (Newest First)
02-19-2013 10:16 PM
69 widetrack I agree...all I'm saying is that wind or air moving over a surface will cool an inanimate object faster than no wind, just like wind will cool a living entity faster than no wind...it physic's..We, in all probability agree.
02-19-2013 05:57 PM
QParker T-bucket is correct, wind can't cool an inanimate object below ambient are temp. For example, if it's 33 degrees outside, with a 50 mph wind water still won't freeze until ambient temp drops below 32f.
02-19-2013 03:38 PM
69 widetrack You are right, the wind will not make any inanimate object colder than the ambient air temperature...I agree, however, as you mentioned it will make metal cool off faster, so metal being an inanimate object, is effected by air movement.

Perhaps semantic's and after reading your response I think we may be on the same page.
02-19-2013 03:11 PM
T-bucket23
Quote:
Originally Posted by 69 widetrack View Post
I'm sorry T-bucket23 I think your wrong...windchill does affect things that aren't living. Whenever you have air moving over anything, it has a cooling effect. If that wasn't the case, why we use fans either electric or manual ones from the water pump to cool down an engine?

When a vehicle is sitting outside in -30 degree weather with a 25 mile an hour wind, it has less chance of starting than the same vehicle in the same conditions except it's in a garage sheltered from the 25 mile an hour winds.

Ray
No I am right, wind chill makes living things feel colder due to the rapid evaporation of moisture from the skin due to the wind.

Using your example if you put a chunk of steel outside at it is 0 degrees with a 50 mile per hour wind the temperature of the metal will be 0. It will get there faster because the moving air will help to dissipate and warmth that may be in the metal. As far a a radiator and fan, the air moving across the radiator removes excess heat. You can run that fan all day long and the temperature of the coolant in the radiator will never drop below ambient temperature.

Definition of wind chill

The human body loses heat through convection, evaporation, conduction, and radiation.[1] The rate of heat loss by a surface through convection depends on the wind speed above that surface. As a surface heats the air around it, an insulating boundary layer of warm air forms against the surface. Moving air disrupts the boundary layer, allowing for new, cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools.

For inanimate objects, the effect of wind chill is to reduce any warmer objects to the ambient temperature more quickly. It cannot, however, reduce the temperature of these objects below the ambient temperature, no matter how great the wind velocity.
02-19-2013 02:29 PM
69 widetrack
Quote:
Originally Posted by T-bucket23 View Post
Just a note, wind chill does not affect engines. It only affects living beings.
I'm sorry T-bucket23 I think your wrong...windchill does affect things that aren't living. Whenever you have air moving over anything, it has a cooling effect. If that wasn't the case, why we use fans either electric or manual ones from the water pump to cool down an engine?

When a vehicle is sitting outside in -30 degree weather with a 25 mile an hour wind, it has less chance of starting than the same vehicle in the same conditions except it's in a garage sheltered from the 25 mile an hour winds.

Ray
02-18-2013 04:02 PM
T-bucket23 Just a note, wind chill does not affect engines. It only affects living beings.
02-17-2013 11:54 PM
vinniekq2 16 is a good place to start with a medium cam.
02-17-2013 11:43 PM
QParker I got the motor in, and running, but I don't know what I should set my base timing at. 12*? 10?
Also, when I mash the throttle, it backfires out the carb, is that from improper timing, or...
Thanks for all the help guys!
01-25-2013 12:45 AM
spinn My cam is mild, but the choke setting housing needed to swing to the winter setting. Has a plug in battery float charger and block heater from outdoor outlet. Sits outside in driveway no garage. A day ago it was 0/-20 wind chill in the morning. Went out , cranked and fired right up. Exit, let run high idle ,and unplug front of vehicle. Inside for work stuff and out. Get in and drive it away. Normal $2 a qt oil 10w40 gtx.

305
performer cam
e force supercharger w/avs 650
vortec 906 heads 60cc
dynamic 3000 stall
3.73 rear with a 28" tire

The blower regulates the low speed power generation. Almost port EFI like responsiveness. Applying throttle makes huge lumps of torque.
01-24-2013 12:57 AM
QParker I suppose I'll just have to wait and see when I get it running.
01-09-2013 01:47 AM
QParker I punched in my numbers on an online calculator, and with 9:1scr, and my cam timing, I got 8.45:1dcr. Is this too much for 87 octane? 89?
I noticed that summit only shows valve events at .050" lift, do I need timing at the seat for these calculators?
Here's the cam specs again:
http://static.summitracing.com/globa...s/sum-1103.pdf
01-07-2013 10:55 PM
vinniekq2 got to be 300
01-07-2013 10:45 PM
QParker So, I ended up using the Summit cam, and my 186 heads, with a .015 shim gasket, which brings me up to about 9:1 give or take a point. and .043 quench
Now, with that, 1 5/8 Headers, and stock, but gasket matched intake/heads, where should I be power wise?
12-23-2012 10:43 PM
F-BIRD'88 Now find some low buck home ported 305HO heads to go with the summit cam.
12-23-2012 09:37 PM
QParker summit cam specs:
ummit Racing Part Number:SUM-K1103

Cam Style:Hydraulic flat tappet

Basic Operating RPM Range:1,600-5,200

Intake Duration at 050 inch Lift:214

Exhaust Duration at 050 inch Lift:224

Duration at 050 inch Lift:214 int./224 exh.

Advertised Intake Duration:272

Advertised Exhaust Duration:282

Advertised Duration:272 int./282 exh.

Intake Valve Lift with Factory Rocker Arm Ratio:0.442 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio:0.465 in.

Valve Lift with Factory Rocker Arm Ratio:0.442 int./0.465 exh.

Lobe Separation (degrees):112
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