To rebuild or not to rebuild this old engine?

[Soundguy]

As much work as it is to tear down an engine.. unless I could'nt eat or something.. the 70$ for the new shells would be worth it.

soundguy

 

[TYMinColton]

As much work as it is to tear down an engine.. unless I could'nt eat or something.. the 70$ for the new shells would be worth it.

soundguy

I know . . . I know. . . .look at me whining like a little baby. Yeah, I can afford bearing shells. Now if only they were pasta shells it'd be a whole lot cheaper . . . and tastier. .

 

[Soundguy]

Everyone's got their own stuff to worry about. I'm sure we've all been there when the 70's for new sheels where thehere were already good shells would make a difference.

if you can swing it.. do it.. if ya can't and they are good.. don't loose any sleep over them.. We've also all put stuff back together with worn parts before... that's life.

soundguy

 

[TYMinColton]

As much work as it is to tear down an engine.. unless I could'nt eat or something.. the 70$ for the new shells would be worth it.

soundguy

Hey soundguy,
Do you have any recommendations/experiences dealing with gaskets sets? It seemed like a no-brainer to just buy a whole kit, but as jb points out, they can be crap, and that would clearly more trouble than it's worth. For example, Walt's sells the following kit that apparently replaces (172-6008D -original part #).
1.UF15190 Complete Engine Overhaul Gasket Set 801, 901, 4000. 4 cyl. Diesel.(Complete Engine Overhaul Gasket Set-)$68.85

How do I know if this kit is any good?
Pete

 

[john_bud]

RobJ -
I haven't looked at the cam bearings, but plan to do so. I suspect like the other replaceable bearings, they're also in decent shape, and I can most likely get away without replacements. Moreover, depending on what you mean by the "right" tool, I suspect I don't have it. . . . . Good suggestion nonetheless. . . .
-Pete

Look all you want, but you won't find. The 172 has no cam bearings. Hey, look at the savings!

Re: bearing talk. The spec on a bearing is the thickness. Oversized is thicker to account for the crank being whittled down smaller. You buy the bearings oversized for a crank that is undersize. But who knows ... that's just me


jb

 

[Soundguy]

In the past i have used gasket sets from CNH.. which i'm sure are tisco. I've also used aftermarket sets.. I've actually had some problems with aftermarket sets with some gaskets not being thick enough.

soundguy

 

[Soundguy]

Look all you want, but you won't find. The 172 has no cam bearings. Hey, look at the savings!

Re: bearing talk. The spec on a bearing is the thickness. Oversized is thicker to account for the crank being whittled down smaller. You buy the bearings oversized for a crank that is undersize. But who knows ... that's just me


jb

Before i passed over that I'd make sure it has not been bored for replaceable cam bearings. We've all seen the pic's of the 8n blocks with custom machine work done to allow for such.. etc.

soundguy

 

[RobJ]

Forgot to att these on the parts...I have used these before for MF and JD stuff.

brandon@endurancepower.com (he might still be there).

P & D Mechanical Heavy Equipment Repair & Service - Upstate & Central NY

Might only have a replaceable cam bearing in the front. Unless really worn, I'd leave it to.

Your basic cam bearing replacement tool...

 

[TYMinColton]

Re: bearing talk. The spec on a bearing is the thickness. Oversized is thicker to account for the crank being whittled down smaller. You buy the bearings oversized for a crank that is undersize. But who knows ... that's just me
jb

Setting aside the question of whether bearings are undersized or oversized for a moment, how do tell what I currently have? Is there a number stamped on the bearing shells (there are numbers but I don't know what they refer to) or do I need to take measurements? If so, of what and with what? (plastigage? micrometer?)
Thanks,
Pete

 

[john_bud]

There is normally a number stamped on the back of the bearing shell