110%
File fit piston ring's, how big gap?
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
He posted the pic yesterday. It's in post #16, does it show up on your screen ?
Let's try this :
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
To start with, he should've posted that pic in initial post ... same issues as before ... disagreement on what's chrome/shine etc.
It's clear from the pic the rings at bottom of stack are top moly ring.
To me, moly rings are not chrome or chrome like ... their color & dull sheen look like all moly rings I've seen. I think their color & dull sheen resemble pewter or cheap silver ... or the OE grey/silver-painted urethane bumpers on my sonoma ... not like those on my 71 C3. Everyone's got their own take on what's shiny or dull. I think the paint on my truck looks ok ... next guy'll think it's dull ... another'll think it's shiny.
The piston spec link is useless without knowing his piston P/N ... probe's sbc top ring lands range about .130 -.260 ... not enough info to suggest a top ring gap since we don't know how far down his top ring is. Suggested wider 2'nd ring gap is well-documented. Suggest builder verify both ring width & depth are matched to piston.
That ring set 315-0033 is NOT DESCRIBED in the pdf ring catalog … it’s Xreffed, but not described.
Without further info, I'd follow the ring mfg spec. It's a toy, not a champ car.
Thread Starter
Racer
Joined: Oct 2004
Posts: 285
Likes: 0
From: Stockholm
Cool down guy's!
I was assuming that the "shiny" ring was a chrome ring, and the "not shiny" ring was a moly ring. I was wrong!
We have all now learned that moly rings can be shiny like chrome!
These rings might not be the perfect rings for my engine.
But they will be good enough for the few miles I will drive my car.
Yesterday I filed the rings, and I manage to get them nearly perfect within the spec!
Here's my filing tools:
0.016"-0.018" gap:
BTW: The complete # is 315-0033.65 (last digits is just the bore size)
You'r right jacksson, it's a big (and expensive) toy for me, this is just for fun, if I loose a few hp, that's ok.
The most important is to see if I can build a engine!
I have never done this before, it's a really big challenge for me!
I was assuming that the "shiny" ring was a chrome ring, and the "not shiny" ring was a moly ring. I was wrong!
We have all now learned that moly rings can be shiny like chrome!
These rings might not be the perfect rings for my engine.
But they will be good enough for the few miles I will drive my car.
Yesterday I filed the rings, and I manage to get them nearly perfect within the spec!
Here's my filing tools:
0.016"-0.018" gap:
BTW: The complete # is 315-0033.65 (last digits is just the bore size)
You'r right jacksson, it's a big (and expensive) toy for me, this is just for fun, if I loose a few hp, that's ok.
The most important is to see if I can build a engine!
I have never done this before, it's a really big challenge for me!
Last edited by gbak; Feb 20, 2007 at 02:51 PM.
Burning Brakes
Joined: Feb 2000
Posts: 1,246
Likes: 1
is that a fresh honed motor? judging by the deck it's not. Do the same gap measurement down low in the bore, it may be tighter there (bore taper) forcing you to adjust it (and inevitably running wider at the top)
Thread Starter
Racer
Joined: Oct 2004
Posts: 285
Likes: 0
From: Stockholm
Yes it's fresh!
My machinist's milling maching broke down, so the deck isn't milled yet!
I have to found an other machine shop!
I took the measurement 1/2" down in the cylinders.
Moved the rings up, just to get the camera to focus....!
My machinist's milling maching broke down, so the deck isn't milled yet!
I have to found an other machine shop!
I took the measurement 1/2" down in the cylinders.
Moved the rings up, just to get the camera to focus....!
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
[QUOTE=gbak;1559047818]Here's my filing tools:
BTW: The complete # is 315-0033.65 (last digits is just the bore size)QUOTE]Nothing wrong w/ your filing tools ... always file inward (away from cylinder wall). Regardless of size, that number ain't described in online ring catalog you linked.
BTW: The complete # is 315-0033.65 (last digits is just the bore size)QUOTE]Nothing wrong w/ your filing tools ... always file inward (away from cylinder wall). Regardless of size, that number ain't described in online ring catalog you linked.
Le Mans Master
Joined: Oct 2004
Posts: 5,269
Likes: 54
From: Orlando Florida
St. Jude Donor '05
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