punkmechanic
diesel tech
I think Im in need of a new clutch and I want to ditch the dual mass flywheel that is currently making noise and apparently giving me drivabilty issues.
I know that luk makes a conversion but it is 500 to 750 depending on where you get if from and thats too steep for me at the moment, has anyone used a velao? (probably spelled wrong, I have heard of them and was told they make a single mass flywheel kit for the 6.9s).
the background on all of this is as follows for anyone that cares: I drove down to bend this last weekend (just over 150 miles one way up and down mountains and hills). I noticed about 50 miles in that when cruising at 65 mph my rpms in fifth are at 2200 ( a bit fast and high on revs but I'm running wmo so I dont really worry too much about mpg's). I noticed that if I lifted off the throttle to decel without pushing the clutch in that the truck felt like it was missing a little. After another 50 to 75 miles it REALLY felt like it was missing, like it wasnt hitting at all for a complete revolution, but only if on decel at 2000-2200 rpm, then it would straighten out. If i gave it throttle it would straighten up, or if I hit the clutch it would drop revs and idle normal. I thought it was the pump (and towcat thinks it is too), but I asked one of the old techs at work and he said its probably the dual mass. He said it was common for them to bind at certain rpms once they started wearing out. So I checke the free play (its supposed to be no more than 1 inch, and its almost 2!!!)
So now Im trying to determine what exactly is going on and how to fix it without going ass up broke.
thanks,
punk
I know that luk makes a conversion but it is 500 to 750 depending on where you get if from and thats too steep for me at the moment, has anyone used a velao? (probably spelled wrong, I have heard of them and was told they make a single mass flywheel kit for the 6.9s).
the background on all of this is as follows for anyone that cares: I drove down to bend this last weekend (just over 150 miles one way up and down mountains and hills). I noticed about 50 miles in that when cruising at 65 mph my rpms in fifth are at 2200 ( a bit fast and high on revs but I'm running wmo so I dont really worry too much about mpg's). I noticed that if I lifted off the throttle to decel without pushing the clutch in that the truck felt like it was missing a little. After another 50 to 75 miles it REALLY felt like it was missing, like it wasnt hitting at all for a complete revolution, but only if on decel at 2000-2200 rpm, then it would straighten out. If i gave it throttle it would straighten up, or if I hit the clutch it would drop revs and idle normal. I thought it was the pump (and towcat thinks it is too), but I asked one of the old techs at work and he said its probably the dual mass. He said it was common for them to bind at certain rpms once they started wearing out. So I checke the free play (its supposed to be no more than 1 inch, and its almost 2!!!)
So now Im trying to determine what exactly is going on and how to fix it without going ass up broke.
thanks,
punk