using ridge reamer question
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using ridge reamer question
when i use a ridge reamer do i make sure that there is absolutly no sign of the ridge left even if i get a few metal shavings, or do i quit as soon as i see shavings.... tested on a lawn mower engine today and just wanna know what i am doing here.
Elder User
Joined: Feb 2002
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From: Saddle Brook United State
As the previous post stated , if you have a ridge it needs a rebore as the cyl has been worn to a taper causing the ridge. To answer your question there should be NO ridge left. If you leave a ridge and put new rings in you run the risk of possibly breaking a ring or ledge/land between the ring grooves on the piston, because the sharp edge of the new ring will hit the ridge. Also you don't want to under cut the ridge, which I suppose will not harm the ring or piston as much as leaving a ridge, as only the leading edge of the ring will overhang the undercut. Pull the engine and rebore it you will be much happier.
stractor
stractor
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From: Duncan,OK
I leave a faint hint of the ridge then sneak up on totaly removing it with a hone.
If the bore is standard you can get slightly over sized rings but you''ll want to check your ring gap closely and make sure it's in specs. I usually take an old ring and check the gap at top of the stroke the bottom and middle. I pretty sure they make a .002 and.001 over size ring set. Of course if you have access to a set of bore mics you can check it with out removing the ridge.
Pat
If the bore is standard you can get slightly over sized rings but you''ll want to check your ring gap closely and make sure it's in specs. I usually take an old ring and check the gap at top of the stroke the bottom and middle. I pretty sure they make a .002 and.001 over size ring set. Of course if you have access to a set of bore mics you can check it with out removing the ridge.
Pat
Last edited by Hooker Bob; Feb 15, 2006 at 01:08 PM.
