spare motor WTFH issue. #2 rod binds.

BobTheBiker · 09-17-2009, 04:30 PM

This is a completely WTFH issue to me. my S10's spare engine a 2.2L 4 cyl, evidently has the most unique problem I've seen todate. When torqued to the factory specification of 32 lb ft on the rod end cap, that rod WILL NOT move for anything. it should glide smooth as silk on the crank, but instead, it simply will not move for shit. I cant figure this one out.

The motor turned absolutely fine prior to disassembly, then upon reassembly, no new parts, just an inspecton of internals, that rod WILL NOT move when torqued down.

derf · 09-17-2009, 04:35 PM

Sounds like out of spec bearings or wrong size bearings

BobTheBiker · 09-17-2009, 04:48 PM

bearings are original, not replacements, which is why I'm so VERY stumped.

karl_1052 · 09-17-2009, 04:50 PM

Rod bearings in backwards.

BobTheBiker · 09-17-2009, 05:05 PM

how can they be in backwards? only go in one way with a notch on the cap and rod.

derf · 09-17-2009, 05:08 PM

The only other idea I might have is that something is put together wrong. Take it apart and redo it. also check to make sure you put machine oil on all the spinney parts so they get lubed the first time you start it.

BobTheBiker · 09-17-2009, 05:12 PM

Thing is I've torn the thing apart, put it together and torn it apart again so many times I could probably do it blindfolded now.

I'm lubricating everything as assemble it too, I'm really anal about that.

derf · 09-17-2009, 05:13 PM

is there any way the rods, the crank or the bearings have been damaged? Possibly dropped or hit with something?

karl_1052 · 09-17-2009, 05:24 PM

Is this just the short block or is the head on it too?

BobTheBiker · 09-17-2009, 05:41 PM

shortblock. near as I can tell I looked at the bearings in it, and they dont both match for some weird reason. I've got a 143D and 143E series bearing on that rod, I'm beginning to believe that the issue is that my bearings are too small and binding it up.

09-17-2009, 04:30 PM	#1
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	spare motor WTFH issue. #2 rod binds. This is a completely WTFH issue to me. my S10's spare engine a 2.2L 4 cyl, evidently has the most unique problem I've seen todate. When torqued to the factory specification of 32 lb ft on the rod end cap, that rod WILL NOT move for anything. it should glide smooth as silk on the crank, but instead, it simply will not move for shit. I cant figure this one out. The motor turned absolutely fine prior to disassembly, then upon reassembly, no new parts, just an inspecton of internals, that rod WILL NOT move when torqued down.

09-17-2009, 04:50 PM	#4
karl_1052 sergeant hatred Join Date: Jul 2009 Location: Ottawa Moto: The bus Posts: 2,723	Rod bearings in backwards. __________________ My wife was afraid of the dark...then she saw me naked and now she's afraid of the light.

09-17-2009, 05:08 PM	#6
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	The only other idea I might have is that something is put together wrong. Take it apart and redo it. also check to make sure you put machine oil on all the spinney parts so they get lubed the first time you start it. __________________

09-17-2009, 05:13 PM	#8
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	is there any way the rods, the crank or the bearings have been damaged? Possibly dropped or hit with something? __________________

09-17-2009, 05:24 PM	#9
karl_1052 sergeant hatred Join Date: Jul 2009 Location: Ottawa Moto: The bus Posts: 2,723	Is this just the short block or is the head on it too? __________________ My wife was afraid of the dark...then she saw me naked and now she's afraid of the light.

09-17-2009, 04:35 PM	#2
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	Sounds like out of spec bearings or wrong size bearings __________________

09-17-2009, 04:48 PM	#3
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	bearings are original, not replacements, which is why I'm so VERY stumped.

09-17-2009, 05:05 PM	#5
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	how can they be in backwards? only go in one way with a notch on the cap and rod.

09-17-2009, 05:12 PM	#7
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	Thing is I've torn the thing apart, put it together and torn it apart again so many times I could probably do it blindfolded now. I'm lubricating everything as assemble it too, I'm really anal about that.

09-17-2009, 05:41 PM	#10
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	shortblock. near as I can tell I looked at the bearings in it, and they dont both match for some weird reason. I've got a 143D and 143E series bearing on that rod, I'm beginning to believe that the issue is that my bearings are too small and binding it up.