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Replace parts?

 
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Cherockee
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Joined: 16 Oct 2011
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PostPosted: Sun Oct 16, 2011 12:57 pm    Post subject: Replace parts? Reply with quote

I am doing my first engine rebuild, although I've done a lot of mechanical work in the past, I'm a little imtimidate by the critical-ness of assembling this block. Especially with the amount of money I have inversted in it already.

Engine is a '95 Jeep 4.0L built to '97 specs (which really just means I am changing the cam to a dual patteren).

Most everything is new except the crank, rods and head parts. So I've got a new cam and lifters, but my kit didn't include push rods or rockers. When the machine shop gave my head back to me all my rocker parts were in a box all mixed together. While they all look in good shape, I do not know what order they go in. Will it matter at all that the push rods and rockers are not in the same place they were?
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Big Dave
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Joined: 04 Dec 2005
Posts: 2646
Location: Tampa Florida
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PostPosted: Sun Oct 16, 2011 6:24 pm    Post subject: Reply with quote

Not at this point in time. The balls and the rockers they sit in wear into each other but it isn't as critical as the lifter and cam lobe wear pattern is. You can reuse them as is without any worry as mechanics have been doing it that way for decades. Any new wear will clean up inside of two thousand miles and be as good as they were before.

If your head has been machined you may want to verify that the stock length push rods still fit by examining the area that is swept as the valve opens and closes.

Big Dave
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Cherockee
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PostPosted: Sun Oct 16, 2011 9:48 pm    Post subject: Reply with quote

Thanks Big Dave.

I was hoping that was the case.
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clay
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Joined: 24 Nov 2002
Posts: 3209
Location: South Carolina
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1972 Chevrolet Nova

PostPosted: Mon Oct 17, 2011 1:54 am    Post subject: Reply with quote

Yep, I agree with Dave. At the spring pressures stock stuff runs, I wouldn't sweat it. Clay
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I have done so much with so little for so long, I can now do anything with nothing.
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cmarr6
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Joined: 08 Feb 2013
Posts: 27
Location: West Point, NE
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PostPosted: Tue Feb 12, 2013 4:50 pm    Post subject: Reply with quote

Sound cool. I am a cherokee addict too. But I but small block chevy's in mine. I have an 85 that I stuffed a strong .30 over 350 in. 3" lift, 31" tires, a homemade cowl hood and lots of other mods. Got a 91 limited too, bone stock, it's my wifes DD. Gotta love the XJ's.
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