Shudder on hard acceleration - 904
Changed out the 904 yesterday without any problems...there was a leak in the pan; I may have to switch over to a cork gasket.
It solved all of the shuddering problems (yay!), although there's still a vibration at idle that drills into the canter of your skull. In P or N, the motor idles smooth.
I took it out on 295 and put it through it's paces to see how well it would function & to test the kickdown (which wound up needing adjustment, since it wouldn't). I've got it firewalled when the exhaust gets loud. I figured my little Permatex patch blew out on #1, & eased off the gas pedal. The pedal, however, had other ideas and stayed on the floor & the car kept on truckin'.
I killed the ignition & coasted to the breakdown lane in neutral. The throttle laid wide open and the return spring as well as it's anchor on the exhaust manifold were gone. I took the kickdown spring & rigged it till I got home.
Turns out the spring anchor left the building when the choke stove bolt head popped off. I found the return spring lying on the block.
The exhaust leak was not my repair blowing out, but rather the choke stove assembly. When the bolt head popped, exhaust pressure blew the stove up out of it's recess a little ways.
Drilled out & tapped both bolt holes, gooped it up with more copper RTV, reinstalled the stove, and let it sit overnight. Will be checking shortly to see if it worked.
Changed out the 904 yesterday without any problems...there was a leak in the pan; I may have to switch over to a cork gasket.
It solved all of the shuddering problems (yay!), although there's still a vibration at idle that drills into the canter of your skull. In P or N, the motor idles smooth.
I took it out on 295 and put it through it's paces to see how well it would function & to test the kickdown (which wound up needing adjustment, since it wouldn't). I've got it firewalled when the exhaust gets loud. I figured my little Permatex patch blew out on #1, & eased off the gas pedal. The pedal, however, had other ideas and stayed on the floor & the car kept on truckin'.
I killed the ignition & coasted to the breakdown lane in neutral. The throttle laid wide open and the return spring as well as it's anchor on the exhaust manifold were gone. I took the kickdown spring & rigged it till I got home.
Turns out the spring anchor left the building when the choke stove bolt head popped off. I found the return spring lying on the block.
The exhaust leak was not my repair blowing out, but rather the choke stove assembly. When the bolt head popped, exhaust pressure blew the stove up out of it's recess a little ways.
Drilled out & tapped both bolt holes, gooped it up with more copper RTV, reinstalled the stove, and let it sit overnight. Will be checking shortly to see if it worked.