Does anyone know if i buy the dual valve springs for the 02 eco how much work is involved in putting them in. Does the timing chain have to be taking off. I did not mention that i wanted better valve springs in my build. so he never put them in. Also with my springs is it safe to boost 20? I also have comp cams.
BOOSTED BABY wrote:Does anyone know if i buy the dual valve springs for the 02 eco how much work is involved in putting them in. Does the timing chain have to be taking off. I did not mention that i wanted better valve springs in my build. so he never put them in. Also with my springs is it safe to boost 20? I also have comp cams.
You most likely will need to remove the cylinder head. Otherwise when you remove the stock retainer/spring, the valve will fall down in a cylinder....
So yes the timing chain would need to come off. They are easy to install themselves, just need to remove the cylinder head.
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
thanks....i wish i would have had these installed. How much boost can i run on stock ones.
You should be fine up to 12-15 PSI we would think.
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
They make air adapters to screw in the spark plug holes to hold the valves up with air pressure so removing the head is not necessary. It's also possible to use nylon rope. Remove spark plugs, put piston at bdc, insert rope in through spark plug hole, and then rotate crankshaft until you feel resistance. The crankshaft + rope will hold the valve up and keep it from falling in the cylinder.
ohvrolla wrote:They make air adapters to screw in the spark plug holes to hold the valves up with air pressure so removing the head is not necessary. It's also possible to use nylon rope. Remove spark plugs, put piston at bdc, insert rope in through spark plug hole, and then rotate crankshaft until you feel resistance. The crankshaft + rope will hold the valve up and keep it from falling in the cylinder.
Yeah that is a possible way to do it without needing to remove the head.
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
you need to remove the cams to change the valvesprings.
you can do it without releasing the timing chain, but you need a special tool.
if you don't have it, you're SOL and need to remove the timing chain and cams, not to mention hold the valves in place (either with a air tool) or pull the head.
Silver Streak wrote:Would using the rope be able to go across all for 4 valves
No, you'd have to do it one cylinder at a time.
