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Old 07-07-2003, 02:40 PM
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How do I use a ridge reamer?

How do I use this ridge reamer, the autozone guy had no idea.

This is my first rebuild that I am doing on my own...

Thanks guys!.

Here is a pictue of the one I got....


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Old 07-07-2003, 04:47 PM
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never actually used one, but if i remember correctly they have a fitting on the top for a socket/ wrench to turn it. Stick it in the cylinder, make sure its snug but not tight and turn away. Your picture didn't show up, but I believe thats correct.

If i'm incorrect (and I certainly may be) someone please correct me.
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Old 07-07-2003, 04:48 PM
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place it in the bore turn it in the direction that causes it to expand and keep turning it untill it comes up to the ridge and begins to cut it off keep going till its gone.
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Old 07-07-2003, 05:29 PM
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Easy does it!

REMEMBER... all your doing is cutting off the ridge so you can remove the pistons! DON'T get carried away and start to counterbore the top of the cylinder!! Have FUN! ...
Mark
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Old 07-07-2003, 06:14 PM
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A little word of advice: keep your wrench in line with the cutter on the ridge reamer as you turn it, this will allow even cutting pressure as you remove the ring ridge. In the old days it was common practice to remove the ring ridge, hone the cylinders and knurl the pistons instead of boring oversize. Nowadays everyone says no no to these practices. Be careful with your ridge reamer and just remove enough to take the ridge out, do not remove additional material from your cylinder wall. Get a junk block and practice a couple of holes.
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Old 07-07-2003, 06:44 PM
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You can ruin a block if your not real careful.

Have it expanded so it will just slide in the cyl. Hold with one hand and tighten in the cyl. the raised part that controlls the cutter blade should be out of the cyl about 1/4, be sure the blade is retracted,once you have it locked in, turn the bolt head that controlls the blade 1/2 turn,this engages the blade. start turning slowley, don`t jerk it. stop as soon as the cutter cuts the ridge,
loosen and retract. HTH Good Luck,

Troy,
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Old 07-13-2003, 09:41 PM
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The explaination from troy is the best that i would know how to put it.I just used one for the first time a few mounths ago.Its pretty simple ,once ya get the hang of it.It took a few times to feel comfortable doing it but just do the ridge and not the cylinder and you will be fine.Have fun
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Old 07-15-2003, 09:20 PM
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usually if the ridge is bad enough to warrent cutting the blocks gona need boring ,there made to cut the ridge so you can remove the pistons if the pistons are already out have the block micked out to see how much wear the block has , if you insist on doing it anyway thats a laythe type cutter it mounts below the ridge there are 3 set up adjustments the large main screw controls the three legs to hold it in the bore the collar screw just below it turns counter clock wise to make the cutter cut in an upward cut spirling up towards the top of the block after you set the cutting head, out of the 3 smaller screws the two towards the center are the course adjustments loosen them and move the cutter towards the outside edge touching the bore then tighten them down the last screw adds fine adjustment to the cutter turn it clock wise till it has light pressure against the bore then turn the collar screw cc wise the cutter will cut moving towards the top of the block be carefull not to let it come to far out of the block as it can over cut the top of the block if it goes to far good luck Mikey
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Old 07-15-2003, 09:39 PM
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i don't get it.......

when the pistons went in the block, they were a perfect fit to the cylinder bore. sooo how does the wear of 100k miles cause the piston to swell so that it won't leave the bore it originally slid right into??? (sarcasm smiley here)
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Old 07-15-2003, 09:58 PM
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Re: i don't get it.......

Quote:
Originally posted by crazy larry
(sarcasm smiley here)
I figured you'd use the ("stroking motion" smiley here).
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Old 07-15-2003, 11:43 PM
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I guess I`ve been doing it wrong all these years.

Larry what are you talking about?Swelling pistons?

Troy
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Old 07-16-2003, 08:16 AM
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ok, if the pistons fit in the bore to start with, and i do know that a ridge can and will occur with weAR, but, that ridge isn't gonna be any higher than it was when the engine was assembled. so i guess my q? is, how come (i guess) some pistons don't want to come out of their bores with the ridge intact? is it piston ring pressure holding it in? wth? sorry to seem like a furrin' dog........
on the two engines (wheewww hoooooo thats a shiitload) ive disassembled, the pistons came right out, and i guarantee you there was at least .030" of a ridge on each...... so who needs a ridge reamer?
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Old 07-16-2003, 06:10 PM
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sometimes a new ring will slap that ridge and shatter, thats why you should remove them, and it makes for a better hone job , and sometimes they dont want to come out because the ring trys to hold the piston back on the ridge.
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Old 07-16-2003, 06:49 PM
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if the ridge is deep enough the rings expanding will catch under the ridge while trying to remove the piston making it almost impossible to remove the piston without breaking it and with the rings already in the block its pretty tough to compress them to a point where they will clear , most of the newer blocks with low tension rings dont have quite the wear problems they used to have, in the old days engines with 100k almost had to be bored .060 just because of wear , and the reason the new rings hit is usually the ring grooves in the pistons and the rings themselves will be worn where they would have contacted the ridge , when you replace the rings with new ones they will be slightly thicker creating an interferance problem couple that with new piston and the problem gets worse .
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Old 07-16-2003, 09:19 PM
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thanks guys, got it now.
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