camshaft seized

[mattcruff]

Okay, so i was rebuiling a 83 200s engine thats just been sitting in my shop. the only thing that seems to be wrong with it is the bushing at the end of the cam is locked onto the cam. So my question is... how is this oiled? How does the oil get from the bottom of the engine to this? just curious because i dont want to press the bushing off and install a new one and then get this problem again.

heres a pic incase you dont know what im talking about

[mattcruff]

i mean does the oil just travel up the chain and sling on the valve and etc? or what?

[AutoXer]

has a oil pump

[mattcruff]

i know it has a oil pump. but how does it get up there. i dont see any oil galleys

[rdlsz24]

The bolt hole that needs an o-ring on the cylinder is an oil passage I believe.

Rob

[mattcruff]

so im guessing since mine doesnt have an o ring, no oil up top?

[rdlsz24]

Yeah that could be your problem.

Rob

[Macs]

nevermind, i was too late

[mattcruff]

thanks guys, i think im just gonna put a new cam and bushing in it and then run it till it does it again. atleast now i know how to correct the problem.

[mattcruff]

i think i will blow some air through there and make sure it aint clogged.

[rdlsz24]

Don't forget the o-ring this time! Probably a 25 cent part. You wouldn't have to get it from the dealer. Any o-ring that size will do.

Rob

[SWIGIN]

why did the cam seize in the first place.......replace the oil pump or at least open it up and give it a look over.

i have forgot the oring on these motors in the past and it ran fine....the dowl pin seals pretty good and the oil realy never touchs the oring.

that being said i would use one anyway but my point is thats not the reason the head didnt get oil.

[Howdy]

thanks guys, i think im just gonna put a new cam and bushing in it and then run it till it does it again. atleast now i know how to correct the problem.

You will be wasting a cam unless you find the problem. To help figure out the problem we need some questions answered.

1 ) Was the top end rebuilt lately ( low hours since rebuild )?
2 ) has the right side cover been removed lately 9 Clutch cover )?
3 ) was the motor ran without oil?
4 ) Is the black rubber piece in the hole on the Head ( near the bushing for the cam ).
5 ) Does it have gasket sealant around the cylinder base, head & cylinder, right side cover?

The reason for these questions is that there is small holes in the way the oil travels to the top end. If one of these are plugged up it will cause the cam to be starved of oil. The black rubber plug also is needed for the oil to get to the topend.

Howdy

[leevarnado]

hey rdlsz i got the same picture here but its a little different.i traced the oil flow in blue so that you could see it better.check it out mattcruff.

[kdagenais]

You will be wasting a cam unless you find the problem. To help figure out the problem we need some questions answered.

1 ) Was the top end rebuilt lately ( low hours since rebuild )?
2 ) has the right side cover been removed lately 9 Clutch cover )?
3 ) was the motor ran without oil?
4 ) Is the black rubber piece in the hole on the Head ( near the bushing for the cam ).
5 ) Does it have gasket sealant around the cylinder base, head & cylinder, right side cover?

The reason for these questions is that there is small holes in the way the oil travels to the top end. If one of these are plugged up it will cause the cam to be starved of oil. The black rubber plug also is needed for the oil to get to the topend.

Howdy

Howdy, What symptons would you experiance if the rubber piece is not in the head (#4 above)? Currently am experiancing a temporary seizer after 30 minutes of running on a 200S. After about 5 minutes it will turn over and run fine again.
Thanks In Advance!