cam damage

[lilchubby]

Ok to make a long story shot, i had a motor swapped into my car. The motor that was in it had a gt2 cam in it, and i told the mechanic to swap it over. He calls me and tells me that he swapped the new motor in and didnt put the cam in because "it was messed up". I picked the cam up, and honestly think its fine. What do you guys think? You can see a couple small scuffs, and it looks like some circular marks (these marks do not even catc a fingernail and it feels smooth to rub over it.) Either way, heres some pics let me know what you think.

[techsan23]

Re: cam damage

You could probably have a machine shop polish it and then mic it to see if it needs oversized cam bearings.

[auto666]

Re: cam damage

Trashed You might be able to get it polished out if it hasn't been to hot

[lilchubby]

Re: cam damage

called a local shop and gonna run it by there after work. ill let ya know what they say.

[cam98aro]

Re: cam damage

wow, thats horrible, change your oil much?

[RadRacer]

Re: cam damage

Ya, see if they can polish it out; if so, I'd reuse it. If not, trash.....I've seen people make lamps out of them :)

[lilchubby]

Re: cam damage

3k or less, with mobile 1 syn.......cam was only in the car for 6-7k. oil changed after 500 miles...then at 3k and again at 6k

[flamingchicken]

Re: cam damage

dont new cams have to have a breakin, like upon start up immediately bring the motor up to like 3000 rpms...

[cam98aro]

Re: cam damage

dont new cams have to have a breakin, like upon start up immediately bring the motor up to like 3000 rpms...

not roller cams, only flat tappet

and its between 1500-2000rpm for 15min

edit* and thats just for the lobes so they can wear properly.. those pics indicate something happened to the cam journals

[flamingchicken]

Re: cam damage

not roller cams, only flat tappet

and its between 1500-2000rpm for 15min

edit* and thats just for the lobes so they can wear properly.. those pics indicate something happened to the cam journals

cool, thanks.

nother q, do our cars have roller or flat tappet?

[lilchubby]

Re: cam damage

roller...........


took it to the speed/machine shop. The guy said its not that bad at all (maybe the pics make it look worse then it is). he is going to polish it up and said it should be perfectly fine to use.

[flamingchicken]

Re: cam damage

hey man, where is scottsboro?

[cam98aro]

Re: cam damage

cool, thanks.

nother q, do our cars have roller or flat tappet?

our cars use hydraulic roller cams

just for some info, there is basically 4 types of cams.. 2 groups, flat tappet, and roller, and each type can be either hydraulic (which is basically a spring in the lifter that pumps up at higher rpm, letting the car have lower lift/duration at lower rpms) and solid (which the lifter is basically a hunk of metal with oil holes drilled through it.. you will get the same lift/duration at all rpms, unless the cam is designed to launch the lifter off of the lobes)

roller...........


took it to the speed/machine shop. The guy said its not that bad at all (maybe the pics make it look worse then it is). he is going to polish it up and said it should be perfectly fine to use.

thats good to hear, the pictures made it look pretty bad

[flamingchicken]

Re: cam damage

[QUOTE=cam98aro;899543

just for some info, there is basically 4 types of cams.. 2 groups, flat tappet, and roller, and each type can be either hydraulic (which is basically a spring in the lifter that pumps up at higher rpm, letting the car have lower lift/duration at lower rpms) and solid (which the lifter is basically a hunk of metal with oil holes drilled through it.. you will get the same lift/duration at all rpms, unless the cam is designed to launch the lifter off of the lobes)
[/QUOTE]

Also the hydraulic lifters allow lash. ie- with solid lifters there is a need to set valve lash for expanding metal as the motor heats up.

[lilchubby]

Re: cam damage

its in the northeast..........up near huntsville if you know where that is.

lmao after looking at a map, its about as far as i could possibly be from you and still live in alabama