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Discussion Starter #1 (Edited)
i am pulling the heads off of my 555 bbc and inspected the solid roller lifters. i noticed one pair came out slightly hard, had to work them out. then i noticed that there is scuffing on the side towards the cylinders. they all have it but all of the others moved nicely. all of the rollers were fine and the cam looks fine. didn't feel any scoring on the lifter bores either but will have to look a little deeper tomorrow. dart big m block, anyone seen anything like this? has about 800 street miles on it, hasn't been to the track yet. thanks in advance, paul c.
 

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What kind of lifter,, is it a like a Morel or a old school comp cams set ? The reason I ask is I had a set of the Comps they didn't work on the street but the Morels have done great. I got 2500 miles on them. Dart Big M block also.
 

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Dart big m here too, had a minor issue with my comp lifters just getting them in when they were new. I had to put the roller end just below the axle in a vise and pull the two ends in a tad, worked great since and that was three years ago.
 

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Discussion Starter #5
mine are 7 year old crowers with the oiling hole for the roller that i got from shaffiroff. i will have to take a picture and post it. it almost seems like they are getting too much side load at some point.
 

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Measure the OD of each lifter between the axle and the end of the lifter. Measure them parallel to the axle and record.
It may be possible the lifters of the pair in question are starting to spread.
 

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My Big M,Went through the motor and found that the lifter bores were so tight that we could barely get the lifters out. Had to have them opened up a little. This was done by a shop not me.
 

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Thats not the first time ive heard of comp lifters having that issue, i use a set of crower hippo lifters in my merlin II block, that lasted about 7 years aswell approx 10k miles, one was a little tight in the bore(but obv when new wasnt) that lifter a short time later for what ever reason broke the wheel in half and wrecked the cam, do your self a favor if the lifter bore mics ok buy a new set of lifters before it costs you more damage

mine were .904 bore btw.

Also i dont know how true it is but my engine builder said in the past yr or so crower realeased a batch of lifters that were disasters, i'd recomend the morrel's, jesels, or make sure u have a good set of crowers.
 

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Had the same issue with Comp Cams lifters. Had trouble getting them out of the lifter bores. Measured them and sure enough they were spreading. Got rid of them, and got Isky Red Zone.
 

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Discussion Starter #11
these are 7 years old crowers with the oil holes for the rollers. only 800 miles though. i have some leaking valves in my darts pro 1's that are going to my machinist on monday and he will check the springs and such. pics to come later.
 

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Your kidding yourself if you think they dont all do it. There is not a solid roller made for the street, 800 miles is only 3200 1/4 mile passes. If someone came to you and said I have 3200 passes on my anything you would think they are crazy. Not saying you cant because I do to but dont be supprised when you have issues out of everyones stuff.
 

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What Jeff said ^^^ above , it is all about cycles . Keep an eye on the axle clips , they try to work their way out of their groove and the lifter starts to spread the fork . Take them out and inspect them as often as possible before you have to beat them out from beneath and repair the lifter bores and the camshaft . If you have to run solid rollers on the street maybe consider a larger dia. lifter since they have a larger dia. wheel and axle that can take the stress a bit longer than stock dia. lifters . Just a thought .
 

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Discussion Starter #14
they are stock diameter. i miced them up and they were about .001 bigger on the bottom measuring near the corners of the roller. i will post pics later. thanks again.
 

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Well it looks like you caught this in time before it got your cam an other parts,,, I would replace all of them. Im overdue in doing the same. I just dont want to right now,,,, Im trying to push things .
 

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Your kidding yourself if you think they dont all do it. There is not a solid roller made for the street, 800 miles is only 3200 1/4 mile passes. If someone came to you and said I have 3200 passes on my anything you would think they are crazy. Not saying you cant because I do to but don't be surprised when you have issues out of everyone's stuff.
don't street drive my car but this is plain and simple...well said! last set of comp cams solid rollers i ran i got 576 passes out of and sent them in and got them rebuilt and there working fine!
 

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Discussion Starter #17
here is a pic. of the wear spots. obviously it is the darker spots. these aren't too bad, some others had score marks.
 

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Discussion Starter #18
Your kidding yourself if you think they dont all do it. There is not a solid roller made for the street, 800 miles is only 3200 1/4 mile passes. If someone came to you and said I have 3200 passes on my anything you would think they are crazy. Not saying you cant because I do to but dont be supprised when you have issues out of everyones stuff.
i am not surprised at all, i just thought the roller would wear out, not the side of the body. using valvoline vr1 for oil.
 
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