Cam hard to turn?!

[coocoobird]

Has anyone had any issues where when you tighten down your exhaust cam and it wont turn without putting some extreme force behind it? I rebuilt the head, used my same old cams but for some reason when i tighten atleast 2 caps down it will not turn. Im not sure what the deal is but i was thinking just enlarging where the cam sits and the cap just enough to let it turn. ?? This is on a 92 eclipse. Am i missing something?

 

[EclipticalGS]

bleed your lifters

 

[coocoobird]

bleed your lifters

I have done that already actually its just as soon as it seens down all the way with a cap on it, it wants to freeze up. I tried this even without rockers on just to make sure. and sure enough.. its very very tight.

 

[ilco187]

are you putting the right caps on the right cam in the right order, are you over torquing it.

 

[coocoobird]

are you putting the right caps on the right cam in the right order, are you over torquing it.

For front most cam (towards front of car) the caps i have are as follows

2-1, E5, E4, E3, E2, E1

Im not torquing the bolts at all actually. I turn the bolt just till it stops and no matter what 2 caps i do it just doesnt turn..

 

[EclipticalGS]

What was the reason for the head rebuild, did you snap or jump timing by any chance?

 

[coocoobird]

What was the reason for the head rebuild, did you snap or jump timing by any chance?

Thats pretty much what happened actually. I bought it from a preacher guy that had just rebuilt the whole engine and the exhaust cam timing gear bolt sheared off and you know what happens after that. So i rebuilt the head with new valves and everything just cant figure this little part out. Im guessing he didnt check it so maybe thats why bolt sheared?

 

[EclipticalGS]

exactly...So are you only having trouble with your exhaust cam then?? That would point somewhere

 

[ilco187]

it may be warped, might want to get some plastigauge and check the clearances, as to how to do that i dont know.

also how do the bearing journals look.

 

[coocoobird]

it may be warped, might want to get some plastigauge and check the clearances, as to how to do that i dont know.

also how do the bearing journals look.

Im only have trouble with the exhaust cam. Intake is fine. Turns like silk. Journals look fine from what i can see. I have actually put on another camshaft incase this one was warped but i get the same case. Hard to turn. So im leaning towards something is up with the caps. Maybe i should just buy new caps and be done with it? If so any ideas where to get some?

 

[thomcasey]

Im only have trouble with the exhaust cam. Intake is fine. Turns like silk. Journals look fine from what i can see. I have actually put on another camshaft incase this one was warped but i get the same case. Hard to turn. So im leaning towards something is up with the caps. Maybe i should just buy new caps and be done with it? If so any ideas where to get some?

Try installing only the end caps, or one cap at a time if you can until you find the one or two that are binding. It does sound like the cam is warped or bent.

 

[coocoobird]

Try installing only the end caps, or one cap at a time if you can until you find the one or two that are binding. It does sound like the cam is warped or bent.

I have tried just the end caps with the same result. I tried another cam with the same result unless they are both warped. Weirder things have happened i guess. Im thinking maybe i will just enlarge the journals a hair. Worse case is i mess them up and have to buy news ones.

 

[ilco187]

how does it turn with out the cam caps.

but any way this is what i was thinking http://www.dsmtuners.com/forums/cylinder-head-short-block/369668-head-warped-where-cams-sit.html

 

[coocoobird]

how does it turn with out the cam caps.

but any way this is what i was thinking http://www.dsmtuners.com/forums/cylinder-head-short-block/369668-head-warped-where-cams-sit.html

actually i have not tried without the caps. Ill have to see how it does tomorrow. I didnt think that the head could be warped which i hope isnt the case.

 

[rlacasse1]

Is the head on the block or is it sitting on a bench or something. Will it spin all the way around? Or does it end up stopping completely?

 

[BogusSVO]

For front most cam (towards front of car) the caps i have are as follows

2-1, E5, E4, E3, E2, E1

Im not torquing the bolts at all actually. I turn the bolt just till it stops and no matter what 2 caps i do it just doesnt turn..

the 2-1 should hold the cam seal right behind the cam gear..

looks like you have the cam tower caps backwards...

try from the cam gear back....

2-1, E1, E2, E3, E4, E5