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.
Engine rebuilt and smoking badly.
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.
-
- 5+ Years
- Posts: 254
- Joined: Tue Jul 29, 2014 4:16 pm
- Zip Code: 45325
- Tractors Owned: IH 184
- Location: Farmersville ohio
Re: Engine rebuilt and smoking badly.
If you installed new spark plugs after the rebuild have you pulled them and looked at them?
-
- 5+ Years
- Posts: 30
- Joined: Tue Feb 28, 2017 1:53 pm
- Zip Code: 38225
- Tractors Owned: 154 LO Boy and a Yazoo 34 PTO-W
Re: Engine rebuilt and smoking badly.
Yes all 4 look like they have been in there for a few years
-
- 5+ Years
- Posts: 30
- Joined: Tue Feb 28, 2017 1:53 pm
- Zip Code: 38225
- Tractors Owned: 154 LO Boy and a Yazoo 34 PTO-W
Re: Engine rebuilt and smoking badly.
Ok so here's the update. Took pistons out again and they mik'ed out to be standard pistons. The cylinders, however seem to have been bored out 0.010 over. I measured them at least 6 times each x/y axis top,middle, and bottom 2.6345 it's the same on all 4. So my question is does someone even make a 0.010 over set for these engines? The smallest I have seen is 0.020 over. Thank you
Last edited by Megoto on Fri Apr 09, 2021 2:21 am, edited 1 time in total.
-
- 10+ Years
- Posts: 5214
- Joined: Tue Jan 12, 2010 2:08 pm
- Zip Code: 12514
- Circle of Safety: Y
Re: Engine rebuilt and smoking badly.
if that is so take the rings off one piston stick it in the bore upside down, if you can put a .010 feeler gauge between the cylinder and piston you have found the problem, piston clearance should be .003-004 at the most
-
- 5+ Years
- Posts: 30
- Joined: Tue Feb 28, 2017 1:53 pm
- Zip Code: 38225
- Tractors Owned: 154 LO Boy and a Yazoo 34 PTO-W
Re: Engine rebuilt and smoking badly.
Haven't done that yet but I will do that right now. Thanks for the suggestion.
-
- 5+ Years
- Posts: 30
- Joined: Tue Feb 28, 2017 1:53 pm
- Zip Code: 38225
- Tractors Owned: 154 LO Boy and a Yazoo 34 PTO-W
Re: Engine rebuilt and smoking badly.
So the .010 feeler gauge fit so no I know for sure. I also, just for good measure, put one of the compression rings in the cylinder it came out of and measured the gap. It came out to .045 so that's not right. I put standard rings on the standard pistons on the advice of my local tractor mechanic. I wish he would have mentioned measuring the cylinders. Oh well, learning experience just not a cheap one
-
- 10+ Years
- Posts: 5214
- Joined: Tue Jan 12, 2010 2:08 pm
- Zip Code: 12514
- Circle of Safety: Y
Re: Engine rebuilt and smoking badly.
sounds like you need to bore, always ck ring gap before installing if they are to tight they can break, gap is to wide you will get smoking and no power
-
- 10+ Years
- Posts: 2791
- Joined: Tue Jul 22, 2008 12:44 pm
- Zip Code: 48370
- Tractors Owned: 184
- Location: Oxford, MI
Re: Engine rebuilt and smoking badly.
Most people just use standard pistons with oversized rings. Purchase rings that are .020 over and file them so they have a very tiny ring gap.
I'm guessing that you have a wide ring gap with the standard sized rings.
I'm guessing that you have a wide ring gap with the standard sized rings.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
-
- 10+ Years
- Posts: 5214
- Joined: Tue Jan 12, 2010 2:08 pm
- Zip Code: 12514
- Circle of Safety: Y
Re: Engine rebuilt and smoking badly.
installing rings in a worn bore is a waste of money and time, will work for a short time and you will be back where you started
-
- Team Cub Mentor
- Posts: 20377
- Joined: Fri Jul 02, 2004 9:52 pm
- Zip Code: 65051
- Circle of Safety: Y
- Location: Mo. Linn
Re: Engine rebuilt and smoking badly.
Worn cylinders usually have taper and out of round, --- not uniform measurements. And 2.6345 is not quite .010 over 2.625.Megoto wrote: The cylinders, however seem to have been bored out 0.010 over. I measured them at least 6 times each x/y axis top,middle, and bottom 2.6345 it's the same on all 4.
I don't think the cylinders has been bored and then standard pistons replaced/reinstalled. I think your measurements are off.
My thought/suggestion is that the engine block will probably have to be bored. Take it to a machine shop and have them measure it.
I have an excuse. CRS.
Return to “Lo-Boy Series - 154, 184, 185”
Who is online
Users browsing this forum: No registered users and 18 guests