Timing Table setup for 150 shot
03-17-2003, 03:12 AM
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Timing Table setup for 150 shot Im not sure if this belongs in the n20 tech section or here.
I now have the commodity of having ls1edit and changing some stuff now. Im interested in spraying my car with a 150 shot. Ive been doing a 125 on stock timing curves so far.
With the above said. What would be a good total timing # for a 150 shot on a bolt on car. I have heard 2 degrees for every 50hp of n20. If my calculations are correct that would be able 6 degrees out and put me in the 22-24 area. Should I start off at 3000 at 20 or so and just slowly work my way up through the advance until I get to 24 at 6000+? or just run 22 or so from 3000 to 8000?
Thanks
<small>[ March 17, 2003, 03:15 AM: Message edited by: broke7 ]</small>
I now have the commodity of having ls1edit and changing some stuff now. Im interested in spraying my car with a 150 shot. Ive been doing a 125 on stock timing curves so far.
With the above said. What would be a good total timing # for a 150 shot on a bolt on car. I have heard 2 degrees for every 50hp of n20. If my calculations are correct that would be able 6 degrees out and put me in the 22-24 area. Should I start off at 3000 at 20 or so and just slowly work my way up through the advance until I get to 24 at 6000+? or just run 22 or so from 3000 to 8000?
Thanks
<small>[ March 17, 2003, 03:15 AM: Message edited by: broke7 ]</small>
03-18-2003, 10:09 PM
#2
Re: Timing Table setup for 150 shot I would run a constant timing from the spray point on.
Technically, you should run less timing in the lower RPM band, and then slowly ramp up timing for the best results. However, the most important thing you should be focusing on with a 150 shot is keeping the engine together, and that means keeping the timing low.
Good Luck,
Kevin
Technically, you should run less timing in the lower RPM band, and then slowly ramp up timing for the best results. However, the most important thing you should be focusing on with a 150 shot is keeping the engine together, and that means keeping the timing low.
Good Luck,
Kevin
03-20-2003, 01:26 PM
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Re: Timing Table setup for 150 shot I RUN A TIMING TRICKER SO THE TIMING RETARDS ONLY WHEN YOU HIT THE JUICE. IT ALSO HAS A BUILT IN WINDOW SWITCH. I HAVE IT SET SO IT RETARDS 6 DEGREES ONLY WHEN THE NO2 IS TRIPPED. WHEN IT IS NOT I HAVE THE TIMING ADVANCED 3 DEGREES THEN ANOTHER ONE OVER 3000 RPMS. SO YOU CAN HAVE THE BEST OF BOTHE WORLDS.
03-20-2003, 10:19 PM
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Re: Timing Table setup for 150 shot I agree with No Go.
Here is another way to have the best of both worlds for about $10.
Buy a 1000 ohm resister and 2 pole relay.Hook it up to the Air temp sensor.So when you spray the relay powers and switches from the air temp to the resistor.The resistor will say it's 130 degree's.
Now go to the air temp timing table and change the timing retard to what you want when it hits that temp. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> I've hooked up a few N2O cars like this and worked excellent.
Here is another way to have the best of both worlds for about $10.
Buy a 1000 ohm resister and 2 pole relay.Hook it up to the Air temp sensor.So when you spray the relay powers and switches from the air temp to the resistor.The resistor will say it's 130 degree's.
Now go to the air temp timing table and change the timing retard to what you want when it hits that temp. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> I've hooked up a few N2O cars like this and worked excellent.
03-21-2003, 09:53 AM
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Re: Timing Table setup for 150 shot very neat trick slowhawk
think I will have to do that
BROKE7
I would start out this way
get your car running its best(max timing) with
good 93 octane gas no nitrous
then, this is a general rule
take 2 degrees per 50 shot(n.o.s. specs 3)
remember this is just a starting point
now 1 degree at a time add back per test
when you get knock stop take 1 degree out in
that particular load cell
and try it again
your car stock is running around 27 deg btdc
if you are getting no knock(w/ a 125 shot) I
would take 1 degree out for an additional 25 hp
to be safe
but in all reality stock timing is pretty good for a 150 shot
just a learning process
think I will have to do that
BROKE7
I would start out this way
get your car running its best(max timing) with
good 93 octane gas no nitrous
then, this is a general rule
take 2 degrees per 50 shot(n.o.s. specs 3)
remember this is just a starting point
now 1 degree at a time add back per test
when you get knock stop take 1 degree out in
that particular load cell
and try it again
your car stock is running around 27 deg btdc
if you are getting no knock(w/ a 125 shot) I
would take 1 degree out for an additional 25 hp
to be safe
but in all reality stock timing is pretty good for a 150 shot
just a learning process