I am in the process of replaceing the rings in my 154.
The piston have the following number stamped inside it: 531532r1 ( i believe this is the part number for .030 over, except that it has a r11 instead of r1 at the end).
The approximate measurement of the piston is 2.6464, whereas the specifications for .030 over is about 2.655 (std 6.2625 + .030).
I just want to be sure that I am purchasing the correct sized rings for this. At this point I am leaning toward the .030 rings which I believe is part number 539356r1.
Any information would be appreciated.
This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link: Privacy Policy
NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.
154 Ring Size Clarification
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
-
- 10+ Years
- Posts: 14
- Joined: Mon Jan 01, 2007 11:49 am
- Location: Springfield, IL
154 Ring Size Clarification
[code]http://i251.photobucket.com/albums/gg307/jimybud/ac59_1.jpg[/code]
-
- Cub Pro
- Posts: 7013
- Joined: Sun Feb 02, 2003 9:36 pm
- Zip Code: 43420
- Circle of Safety: Y
- Location: OHIO, Fremont
Re: 154 Ring Size Clarification
30 over is what I would order. That will give you a chance to very carefully fit the rings to proper end gap (.007 with the ring square with the honed bore at the bottom of the stroke)
George Willer
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
-
- 10+ Years
- Posts: 14
- Joined: Mon Jan 01, 2007 11:49 am
- Location: Springfield, IL
Re: 154 Ring Size Clarification
I measured the cylinders, the details are as follows:
#1 2.65748
#2 2.65550
#3 2.65400
#4 2.65660
Should I compare this to the .03 over quote of the pistions 2.655 (std 2.625 + .030)? The difference between the measurements and 2.655 is very minor (.00248,.0005, .001, .0016).
The cylinders have very little ridge. The issue with the engine was that it had excessive "blow by" and was low on power when the mower deck was engaged.
#1 2.65748
#2 2.65550
#3 2.65400
#4 2.65660
Should I compare this to the .03 over quote of the pistions 2.655 (std 2.625 + .030)? The difference between the measurements and 2.655 is very minor (.00248,.0005, .001, .0016).
The cylinders have very little ridge. The issue with the engine was that it had excessive "blow by" and was low on power when the mower deck was engaged.
[code]http://i251.photobucket.com/albums/gg307/jimybud/ac59_1.jpg[/code]
-
- 10+ Years
- Posts: 14
- Joined: Mon Jan 01, 2007 11:49 am
- Location: Springfield, IL
Re: 154 Ring Size Clarification
It seems that the .030 rings are only available from the dealer and I am trying to stay "low budget" and would like to buy them afermarket.
The NAPA dealer can only get .040 over. Would there be any issue with using such rings and "size" them by filling the end as needed to get the appropriate end gap. I would square them in the cylinder and sand the end until the proper gap is achieved.
I was not sure if the difference in size would abnormally wear the cylinder walls or if the .01 difference is negligble, especially considering that the walls of the cylinder have wear beyound the .030.
The NAPA dealer can only get .040 over. Would there be any issue with using such rings and "size" them by filling the end as needed to get the appropriate end gap. I would square them in the cylinder and sand the end until the proper gap is achieved.
I was not sure if the difference in size would abnormally wear the cylinder walls or if the .01 difference is negligble, especially considering that the walls of the cylinder have wear beyound the .030.
[code]http://i251.photobucket.com/albums/gg307/jimybud/ac59_1.jpg[/code]
-
- Cub Pro
- Posts: 4435
- Joined: Wed Dec 26, 2007 7:45 pm
- Zip Code: 32536
- Circle of Safety: Y
- Location: FL, Crestview
Re: 154 Ring Size Clarification
I would be concerned about putting .04 rings on .03 pistons. Even when you gap the rings, they would not be able to "seat". Results in the short term might be what you are looking for (curing the blow-by), but in the long term, you may be worse off (even less power). I have heard of people doing this when the cylinders are worn out but not willing to rebuild the motor when trying to off-load a piece of equipment. Shop around, check with a machinist to see if other suppliers can provide .03 rings. Best of luck, let us know what you find out.
Screwstick #3934
FCub - LoBoy - Numbered Series - Power Unit Databases
FCub - LoBoy - Numbered Series - Power Unit Databases
-
- Team Cub Mentor
- Posts: 20378
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: 154 Ring Size Clarification
Of the two choices, I would purchase the .030 rings from IH. There is a posibility that a machinest can obtain the rings.
I have an excuse. CRS.
-
- 10+ Years
- Posts: 14
- Joined: Mon Jan 01, 2007 11:49 am
- Location: Springfield, IL
Re: 154 Ring Size Clarification
What are your thoughts on this? I was thinking about using 80 grit paper.
The other thing people overdo is hone. They want to see a
pretty 350 chevy cross hatch pattern but that is not necessary in
our old engines. You are grinding away precious cylinder wall
material. The extra piston to cylinder wall clearance will allow the
piston to cock around in the cylinder and will break the seal of the
rings. If you can't resist the extra honing get a piece of emory
paper and do it by hand. When your arm is tired you know that
you are done. Leave the power honing to the professionals who
have modern marvels like oversized pistons in their bag of tricks
The other thing people overdo is hone. They want to see a
pretty 350 chevy cross hatch pattern but that is not necessary in
our old engines. You are grinding away precious cylinder wall
material. The extra piston to cylinder wall clearance will allow the
piston to cock around in the cylinder and will break the seal of the
rings. If you can't resist the extra honing get a piece of emory
paper and do it by hand. When your arm is tired you know that
you are done. Leave the power honing to the professionals who
have modern marvels like oversized pistons in their bag of tricks
[code]http://i251.photobucket.com/albums/gg307/jimybud/ac59_1.jpg[/code]
-
- Cub Pro
- Posts: 7013
- Joined: Sun Feb 02, 2003 9:36 pm
- Zip Code: 43420
- Circle of Safety: Y
- Location: OHIO, Fremont
Re: 154 Ring Size Clarification
jimybud wrote:What are your thoughts on this? I was thinking about using 80 grit paper.
The other thing people overdo is hone.
The paper won't work. You'll have to use a file and even then it will be slow going. I hold the ring in a vise with soft jaws. Use a feeler guage to check the size often.
The honing isn't intended to change the size of the cylinder. It's to create a surface that the rings can seat to. Don't omit this necessary step, but just don't overdo it.
George Willer
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
http://gwill.net
The most affectionate creature in the world is a wet dog. Ambrose Bierce
-
- Team Cub Mentor
- Posts: 5641
- Joined: Thu Aug 03, 2006 6:20 am
- Zip Code: 43358
- Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D - Circle of Safety: Y
- Location: OH West Mansfield
Re: 154 Ring Size Clarification
George is correct on this! .040 over size rings, filed to fit will work fine, no concern about extra wall tension. High end engine builders use this procedure all the time.
Yes, you do want that "beautiful 350 Chevy crosshatch pattern". It's even more important in an older engine, with well glazed cyl. walls. Just use a flex hone (or ball hone) to prepare the surface, it won't remove enough material to measure.
I think your cyl. measurements are close enough, that .030 over rings will work ok, but the end gaps will likely be a little over spec.
Yes, you do want that "beautiful 350 Chevy crosshatch pattern". It's even more important in an older engine, with well glazed cyl. walls. Just use a flex hone (or ball hone) to prepare the surface, it won't remove enough material to measure.
I think your cyl. measurements are close enough, that .030 over rings will work ok, but the end gaps will likely be a little over spec.
-
- 10+ Years
- Posts: 7388
- Joined: Sat Jul 22, 2006 5:02 pm
- Zip Code: 00000
- Location: in northern usa
Re: 154 Ring Size Clarification
The "Crosshatch" used in the cylinders depends on what kind of piston rings your using. Chrome rings require a tighter cross hatch with regular rings require a more open crosshatch. Remember the crosshatch holds the oil for lubrication too.
Make sure your going to hone use a flex hone or a ball hone so your not making the cylinders larger if your just doing piston rings. I have a gear driven hone that can bore cylinders to any size but i don't use it when just doing rings for the reason a cylinder can be out of round and in the process of making it exactly round to within .0000 to .0002" in can bore it larger at the sametime. If your using a spring loaded hone i back off on the spring pressure just a little too so i just get a crosshatch nothing else. Just remember to lube the hone and cylinder often.
Make sure the ridge at the top is completely gone so the new square compression ring won't break in the radious left by the old top compression ring.
The 40 over rings will work but you need to use a "ring gap filer" so the end gap will be exactly square.
For anyone wanting a new gear driven hone for boring they cost between $125 to $185 depending on where you shop(ebay). Then you need coarse stones for boring and fine stones for finishing.(removing that last few .001" & hatching)
Make sure your going to hone use a flex hone or a ball hone so your not making the cylinders larger if your just doing piston rings. I have a gear driven hone that can bore cylinders to any size but i don't use it when just doing rings for the reason a cylinder can be out of round and in the process of making it exactly round to within .0000 to .0002" in can bore it larger at the sametime. If your using a spring loaded hone i back off on the spring pressure just a little too so i just get a crosshatch nothing else. Just remember to lube the hone and cylinder often.
Make sure the ridge at the top is completely gone so the new square compression ring won't break in the radious left by the old top compression ring.
The 40 over rings will work but you need to use a "ring gap filer" so the end gap will be exactly square.
For anyone wanting a new gear driven hone for boring they cost between $125 to $185 depending on where you shop(ebay). Then you need coarse stones for boring and fine stones for finishing.(removing that last few .001" & hatching)
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
-
- Similar Topics
- Replies
- Views
- Last post
-
-
Model & color clarification
by michael » Mon Jan 17, 2022 8:24 pm » in Lo-Boy Series - 154, 184, 185 - 2
- 378
-
by Don McCombs
Mon Jan 17, 2022 10:28 pm
-
-
- 2
- 292
-
by 1suffolkmare
Fri Mar 24, 2023 1:58 pm
-
-
Looking for belt size for mower 3160 deck Attachment(s)
by Dan Stuckey » Tue May 31, 2022 8:32 pm » in Lo-Boy Series - 154, 184, 185 - 1
- 401
-
by indy61
Wed Jun 01, 2022 5:15 am
-
Return to “Lo-Boy Series - 154, 184, 185”
Who is online
Users browsing this forum: No registered users and 3 guests