Car dying? is it my cams
02-19-2009, 08:10 AM
#1
Honda-Tech Member
Thread Starter
Car dying? is it my cams
here is my build
b18b block - bored to 81.5mm
polished and balanced ls crank
JE pistons 12:1
eagle h beams
acl bearings
Arp Rod Bolts
Arp Head Studs
B16 head - stock port
Skunk2 intake mainfold
Skunk2 Throttle body, 68mm
Buddy Club spec 4. cam shafts
Buddy Club cam gears
Supertech springs
Skunk2 TI retainers
my problem is when my car is cold it wont stay running and i have to keep the rpms up til it warms up,
is this common nature for these cams? if so is there a way to fix it, was thinking about raising my Idle a little. anyone know where i should set my idle?
once it warms up it idles fine and the car runs great but just dies at idle when cold
b18b block - bored to 81.5mm
polished and balanced ls crank
JE pistons 12:1
eagle h beams
acl bearings
Arp Rod Bolts
Arp Head Studs
B16 head - stock port
Skunk2 intake mainfold
Skunk2 Throttle body, 68mm
Buddy Club spec 4. cam shafts
Buddy Club cam gears
Supertech springs
Skunk2 TI retainers
my problem is when my car is cold it wont stay running and i have to keep the rpms up til it warms up,
is this common nature for these cams? if so is there a way to fix it, was thinking about raising my Idle a little. anyone know where i should set my idle?
once it warms up it idles fine and the car runs great but just dies at idle when cold
02-19-2009, 10:48 AM
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02-19-2009, 08:21 PM
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Re: Car dying? is it my cams
are you going to block off your radiator with a piece of cardboard in the winter as well? get it tuned, turn up the duty cycle on the IACV
02-20-2009, 05:34 AM
#9
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Re: Car dying? is it my cams
no its not tuned, got a date setup for some dyno time next week, just wanted to get in idea what was going on. thanks for the help
02-20-2009, 03:53 PM
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Re: Car dying? is it my cams
Me 2 even thought i got my car tuned, i dont know if its by TB or my cams, but i have to rev my car up at least a min or 2 before it idols by itself.
02-21-2009, 09:05 PM
#12
Honda-Tech Member
Re: Car dying? is it my cams
You need a tune that adds a little (lot) more fuel on a cold engine. ECT tip-in so that your car will stay running.
The bigger cams are partly a reason for this as they have reversion (due to more overlap) that pushes air from the cylinders into the manifold causing a higher vacuum and less fuel. Plus when fuel hits a cold motor it puddles and doesn't atomize efficiently causing a somewhat lean condition (not bad) but a colder motor needs twice as much fuel as normal to stay running considering not all fuel burns correctly on a cold motor.
Thats as elementary as I can explain it.
TUNE YOUR DAMN CARS!!!!
The bigger cams are partly a reason for this as they have reversion (due to more overlap) that pushes air from the cylinders into the manifold causing a higher vacuum and less fuel. Plus when fuel hits a cold motor it puddles and doesn't atomize efficiently causing a somewhat lean condition (not bad) but a colder motor needs twice as much fuel as normal to stay running considering not all fuel burns correctly on a cold motor.
Thats as elementary as I can explain it.
TUNE YOUR DAMN CARS!!!!
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