Cranking and idling 580, 14:1

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Cranking and idling 580, 14:1

Post  tconnection on December 7th 2013, 12:53 am

I have an aheaded 580 14:1 engine.
You guys who have big motors, how do you go about cranking it when its cold, after its warmed up and after its good and hot?
Im sure ive been letting mine idle to much with it being 14:, 839 lift and 1250 carb.
What rpm ranges do you use/
Thanks

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Re: Cranking and idling 580, 14:1

Post  69F100 on December 7th 2013, 1:18 am

my 552 wont idle below 1000rpm I got it set about 1200rpm I flood it a little to start it cold I get the engine turning over then hit the ing switch, when it hot I just get it to turning over and hit the ing switch and it fires right up.
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Re: Cranking and idling 580, 14:1

Post  soupbean on December 7th 2013, 1:25 am

Cold I give 2 shots and turn over for about a second, 2 more shots and turn over for about a second. If it don't fire then, on the 3rd time of 2 shots and turning over it does (No throttle while turning over). Warm I hold half throttle, turn over and it busts off. Idles around 1200 warm.
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Re: Cranking and idling 580, 14:1

Post  bbf-falcon on December 7th 2013, 12:23 pm

Mine starts great w/just about 3 shots of throttle after I replaced the crank trigger deal w/reg. soft spring dizzy. My SV-1 will idle down to between 800/900 rpm,but I like 1000.After it's warm I just hold the throttle about 1/2 down and its running.

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Re: Cranking and idling 580, 14:1

Post  norm on December 7th 2013, 1:57 pm

Mine isn't that much compression but cold one full pump and crank. If it doesn't fire I give it another half pump and it will fire. Warm, just hit the key. No peddle. Idles 1100 hot in neutral.
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Re: Cranking and idling 580, 14:1

Post  richter69 on December 7th 2013, 1:58 pm

1/2 pump of the throttle, ign on, hit starter button and vrooooom.......
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Re: Cranking and idling 580, 14:1

Post  jbozzelle on December 7th 2013, 3:09 pm

One pump, roll it and throw the fire to it. Idles about 12-1400...

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Re: Cranking and idling 580, 14:1

Post  tconnection on December 7th 2013, 11:11 pm

My plugs are crazy bad and wouldnt let me idle nor run right. I got some new # 8's.
Usually i turn the pump and ign on, 1/4 pump, spin with another 1/4 pump and yayall.
I gotta quit letting it idle so much.
Thanks

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Re: Cranking and idling 580, 14:1

Post  richter69 on December 8th 2013, 12:22 am

I usually just warm it one time and keep the block heaters plugged in...... then its start it and do a burnout, make the pass, clickit at the stripe....... drag it back and repeat as needed.
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Re: Cranking and idling 580, 14:1

Post  nuclearcobra on December 8th 2013, 6:58 pm

richter69 wrote:I usually just warm it one time and keep the block heaters plugged in...... then its start it and do a burnout, make the pass, clickit at the stripe....... drag it back and repeat as needed.
Drag it back ....it ain't no funny car ....or is it Laughing 
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Re: Cranking and idling 580, 14:1

Post  richter69 on December 8th 2013, 10:03 pm

hard to get a good read on the plugs when u drive it back...... saves fuel too.
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Re: Cranking and idling 580, 14:1

Post  soupbean on December 9th 2013, 1:10 pm

richter69 wrote:hard to get a good read on the plugs when u drive it back...... saves fuel too.

Amazing how much fuel towing saves
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Re: Cranking and idling 580, 14:1

Post  nuclearcobra on December 9th 2013, 8:20 pm

richter69 wrote:hard to get a good read on the plugs when u drive it back...... saves fuel too.
I know  Smile  just busting your chops a little  Laughing  Even tho it is kinda of funny going down the track on only two wheels  Twisted Evil 
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