New head and cam = new rocker? - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 11-25-2011, 01:15 PM
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Question New head and cam = new rocker?

94 22RE. I'm replacing the head with a stock one from engnbldr. I ordered a new stock cam as well. Does that mean I need a new rocker assembly? Can I replace parts of the old one? What in THE hell is "degreeing a cam"!!

*EDIT*
Looked into cam degreeing more. As I am not building a performance motor here so I doubt I will be buying the tools to degree the cam. If it were off a degree or 2, I don't see what I could do about it anyway. This is my daily driver.

Last edited by tdpillo123; 11-26-2011 at 02:18 PM.
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#2 Old 02-28-2012, 02:46 PM
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Did your old cam get lunched and torn up? whatever wear happened to the cam would be matched by the wear on the rocker face, and could ruin your new cam possibly... especially if the hardened surface has been worn off the face or there is visible wear, I would replace them.

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#3 Old 02-28-2012, 04:35 PM
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a new cam should always be used with new rockers.
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#4 Old 02-28-2012, 11:18 PM
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Quote:
Originally Posted by nevada View Post
a new cam should always be used with new rockers.
My question (old though it may be) was for exactly the opposite. I put a new cam into a new head and re-used the rocker arms. Thanks for the replies
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#5 Old 02-28-2012, 11:24 PM
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Originally Posted by 89Truk View Post
Did your old cam get lunched and torn up? whatever wear happened to the cam would be matched by the wear on the rocker face, and could ruin your new cam possibly... especially if the hardened surface has been worn off the face or there is visible wear, I would replace them.
It did not. This is a few months old now but, the old cam and tower assembly including rockers were fine. I replaced the head and cam anyway because I couldn't have down time on the truck of more than a couple days so I pre-ordered it all.
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#6 Old 02-29-2012, 03:54 AM
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a new cam should always be used with new rockers.

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#7 Old 02-29-2012, 02:46 PM
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Perhaps I misunderstood, if your old cam was fine, why did you replace it? Did it save you the trouble of installing your old one? (I don't see how it could)

Regardless, everyone seems to concur that new rockers should be used with a new cam, but if you are running the old ones now and have no issues, the damage would have already been done and you might as well keep running the old ones I guess...

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#8 Old 02-29-2012, 04:16 PM
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I was pressed for time, as I had stated. It's my daily driver. I couldn't see where the coolant was mixing with the oil so, I bought a new head (no time to wait for a machine shop in case it needed to be resurfaced or machined) and timing cover. The new CAM was cheap so I bought it along with the head. I had access to new rockers but the old ones were completely smooth so I didn't bother. The old head turned out to be fine as well. Again, I had 1 weekend to get it ripped down and reassembled so, I bought mostly new parts ahead of time. The rockers had no grooves or flat spots so, I re-used them.
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#9 Old 03-01-2012, 09:53 PM
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Gotcha, sounds like it will be fine...

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