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Re: Low buck 1975 440 engine overhaul....
[Re: RUNCHARGER]
#1303604
09/15/12 03:56 PM
09/15/12 03:56 PM
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Joined: Feb 2005
Posts: 4,311
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,311
Prospect, PA
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Quote:
I also agree that one slip up with the ridge reamer and you'll be boring it.
Sheldon
Usually they don't even know that they screwed it up. It will still assemble and run.
The few that I have seen needed to be overbored 0.040" or 0.060" just to cover up the affect of a R.R. used on a std bore block.
Maybe my limited experience is not representative.
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Re: Low buck 1975 440 engine overhaul....
[Re: Blakcharger440]
#1303606
09/15/12 04:35 PM
09/15/12 04:35 PM
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Joined: Aug 2003
Posts: 1,062
Amherst,NY
challengermike
super stock
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super stock
Joined: Aug 2003
Posts: 1,062
Amherst,NY
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Quote:
Quote:
Quote:
....I was going to use a ridge reamer....
I suggest that you don't do this. Nothing good will come from it, will likely ruin or make worse the top ring seal, and could ruin the block. Probably the worst tool ever made.
The ridge is approximately .002 to .005.
If I dont use the reamer will it hurt the new rings that I put on the stock pistons when the engine is running?
What grit should I use on the cylinders for cast iron rings? [/quote
No it wont hurt the rings, the ridge is there because the cylinder is worn down and the ridge is where the rings didnt touch.As long as the stroke and pistons are the same it will not touch the ridge.
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Re: Low buck 1975 440 engine overhaul....
[Re: challengermike]
#1303607
09/15/12 04:38 PM
09/15/12 04:38 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
....I was going to use a ridge reamer....
I suggest that you don't do this. Nothing good will come from it, will likely ruin or make worse the top ring seal, and could ruin the block. Probably the worst tool ever made.
The ridge is approximately .002 to .005.
If I dont use the reamer will it hurt the new rings that I put on the stock pistons when the engine is running?
What grit should I use on the cylinders for cast iron rings? [/quote
No it wont hurt the rings, the ridge is there because the cylinder is worn down and the ridge is where the rings didnt touch.As long as the stroke and pistons are the same it will not touch the ridge.
What about getting the pistons out and then back in without hurting the rings or the ring lands on the piston with a ridge at the top?
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Re: Low buck 1975 440 engine overhaul....
[Re: CUDA8U]
#1303610
09/16/12 10:22 AM
09/16/12 10:22 AM
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Joined: Jul 2003
Posts: 4,766
Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,766
Holland MI Ottawa
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Sounds like the good ole days of taking a good running motor and doing rings, bearings, gaskets and freezeplugs are gone?
Keep old mopars alive.
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Re: Low buck 1975 440 engine overhaul....
[Re: buildanother]
#1303612
09/16/12 11:17 AM
09/16/12 11:17 AM
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Joined: Aug 2003
Posts: 1,062
Amherst,NY
challengermike
super stock
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super stock
Joined: Aug 2003
Posts: 1,062
Amherst,NY
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Quote:
No, I just think the original poster has not done enough of this stuff to know what will fly, and what won't.  
I agree but you have to start somewhere. Im sure we all started out doing rerings and gaskets. Nothing wrong with just freshing it up.
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Re: Low buck 1975 440 engine overhaul....
[Re: 2boltmain]
#1303613
09/16/12 12:24 PM
09/16/12 12:24 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
Sounds like the good ole days of taking a good running motor and doing rings, bearings, gaskets and freezeplugs are gone?
Depends how worn the cylinders are. If they're bad, the results from a backyard hone'n're-ring job might be very mediocre.
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