Cam Bearring Install?
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Drifting
Joined: Mar 2009
Posts: 34
Likes: 1
Cam Bearring Install?
anyone installed cam bearrings in their engine? i am getting ready to drop my engine in but pulled the cam to check the cam bearrings and i think i saw small cracks on the bearing and looks worn out .. the motor i am installing has 89K on it and the cylnders look great and the head gasket looked good too .. any advice on the install or should i just drop it off at my machine shop and let them install it ?
Camel Trophy
Joined: Feb 2007
Posts: 4,959
Likes: 11
From: Tulsa, OK
Have you gotten a Quote for it? I would just let them do it. What year are you talking about? I would also suggest going ahead with head gaskets if you have it out already.. These things like to pop them, and at almost 90K, it might be getting ready.
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Drifting
Joined: Mar 2009
Posts: 34
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i got a quote this morning for $40 labor the bearings will cost me about $145
i already pulled the heads and the machine shop has them he is rebuilding the heads now
the motor is a 1999 my truck is a 2000
when it was at the machine shop they asked me if i wanted to change the rings and hone the cylnders .. i dont think i will do that because the motor looks really good .... what do you guys think? do these have problems with the rings at such low mileage?
i already pulled the heads and the machine shop has them he is rebuilding the heads now
the motor is a 1999 my truck is a 2000
when it was at the machine shop they asked me if i wanted to change the rings and hone the cylnders .. i dont think i will do that because the motor looks really good .... what do you guys think? do these have problems with the rings at such low mileage?
Camel Trophy
Joined: Feb 2007
Posts: 4,959
Likes: 11
From: Tulsa, OK
Only problems with the rings is carbon build up. If premium fuel is not ran through them, they carbon up fast. How did the cylinders look?
$40 seems like a pretty good price to me to not have to mess with the cam bearings.
$40 seems like a pretty good price to me to not have to mess with the cam bearings.
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Drifting
Joined: Mar 2009
Posts: 34
Likes: 1
cyl look clean crosshatching looks great i cleaned the carbon off the pistons
the cam bearings are being done right now and the heads should be done today
before i pulled the heads i had 165 psi compression across the board .. this motor has been sitting for about a year so i suspect once it is running the compression will be higher .. what is the average compression you guys pull out of these motors? because to me if i am getting 165 the rings must be good
the cam bearings are being done right now and the heads should be done today
before i pulled the heads i had 165 psi compression across the board .. this motor has been sitting for about a year so i suspect once it is running the compression will be higher .. what is the average compression you guys pull out of these motors? because to me if i am getting 165 the rings must be good
Mudding
Joined: Jan 2009
Posts: 241
Likes: 0
From: CLT NC
A compression test yielding a 165 PSI is high, for an engine that has been sitting around, I assume. My 2004 DII SE W/ < 25 K MI registers across all eight cylinders 152 to 155.
You may have dry valve guide seals or piston rings tension on the low side. That allows oil to get into the combustion chamber, increasing your compression.
Personally, I would replace the rings and the valve guide seals, while you are in it.
You may have dry valve guide seals or piston rings tension on the low side. That allows oil to get into the combustion chamber, increasing your compression.
Personally, I would replace the rings and the valve guide seals, while you are in it.
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