lifters turned

[94IVGT]

94 gt 302

has anyone had a lifter actually turn sideways and destroy itsself and the cam before? how can they get out of the t bone bracket? i found this on one cylinder in mine. both lifters chewed up on sides and a huge flat spot. and from looking down you can see the cam is shot.

 

[BlownFiveLiter]

Talk to Guero about this. I'm pretty sure it happened to him when he did his HCI.

 

[reddy351]

There is actually a write-up in Car Craft about roller cams. They said that the way an aftermarket cam manufacturer makes lift is to cut the base circle down. When that happens, the lifter drops further down into the lifter bore to follow the lobe. When it gets down too far, it comes out of the "dogbone" and can twist and shout any way it wants to.

 

[SQUEEZE&STROKE]

Had it happen, it broke the dog bone and turned and fubared the cam...time for a new cam...

 

[94IVGT]

does anybody make a better dogbone type system maybe something strongerto keep this from happening?

 

[BlownFiveLiter]

The only thing I can think of that would do it would be a link bar type lifter like this. The problem with them is, they're expensive. I'm not even absolutely sure they'll work in a roller block though, because the lifter bores are taller and may interfere with the link bar.

 

[caseywan]

The only thing I can think of that would do it would be a link bar type lifter like this. The problem with them is, they're expensive. I'm not even absolutely sure they'll work in a roller block though, because the lifter bores are taller and may interfere with the link bar.

I have heard of lots of people using them in roller blocks rather than the dog bone style.

 

[Adam95GT]

The only thing I can think of that would do it would be a link bar type lifter like this. The problem with them is, they're expensive. I'm not even absolutely sure they'll work in a roller block though, because the lifter bores are taller and may interfere with the link bar.

expensive yes.... but if it would stop a problem like this from happening its not that much of a price to pay...