Builds 1985 JDM 3B Engine Rebuild and Other Stories (4 Viewers)

[OGBeno]

I was able to pull it out this far with my hands…

Fuuuug…

 

[Ol Yeller]

I was able to pull it out this far with my hands…

Fuuuug…

View attachment 2680725

Never had a chance

 

[lacalvette]

I was able to pull it out this far with my hands…

Fuuuug…

View attachment 2680725

Holy guacamole!!!!! Was these liner finish (ready to install piston) or semi-finish then you need to bore and hone after installation ?
That suck soooo much

 

[OGBeno]

Never had a chance

Nope. I’m surprised it lasted 3K miles.

 

[OGBeno]

Holy guacamole!!!!! Was these liner finish (ready to install piston) or semi-finish then you need to bore and hone after installation ?
That suck soooo much

Semi.

And I really should have interviewed him better.

Lesson for all of us. I knew better.

 

[bcsteel]

Is there any way to rectify this with assembly/machine shop? That’s piss poor.

 

[OGBeno]

Is there any way to rectify this with assembly/machine shop? That’s piss poor.

It's kind of a s*** show at this point. Going after/recourse with the machine shop: that ship has sailed. He gave me the big

 

[bcsteel]

Ugh, sorry man. Such a comprehensive thread. Oh well. Onwards and upwards. Sorry for the distraction. Carry on.

 

[littleafrica]

What the hell! How is something like this possible?

 

[FJBen]

Wow, that sucks man. The 3B series of diesel aren't hard at all to work on, thats just attention to detail BS.

What the hell! How is something like this possible?

My guess is,

The 3B cylinder liners are press fit. You might be able to tap them in, but you should really press them in. The same with removal. You should have to press them out. These are not loose fit liners.

Possibilities are wrong sized liners, possible the block was already bored for some reason? Possible the machine shop bored out the block as they thought is was a loose fit sleeve?

They obviously didn't use and sleeve retaining loctite paste which holds the sleeve and helps with heat transfer from block/sleeve.

Possible the liner/depth counterbore was not correct allowing the piston to move since there was no retaining paste.

A few options, but it all boils down to shoddy work from machine shop.

 

[lacalvette]

Wow, that sucks man. The 3B series of diesel aren't hard at all to work on, thats just attention to detail BS.




My guess is,

The 3B cylinder liners are press fit. You might be able to tap them in, but you should really press them in. The same with removal. You should have to press them out. These are not loose fit liners.

Possibilities are wrong sized liners, possible the block was already bored for some reason? Possible the machine shop bored out the block as they thought is was a loose fit sleeve?

They obviously didn't use and sleeve retaining loctite paste which holds the sleeve and helps with heat transfer from block/sleeve.

Possible the liner/depth counterbore was not correct allowing the piston to move since there was no retaining paste.

A few options, but it all boils down to shoddy work from machine shop.

How knows, shop may have use stone to clean the engine bore prior inserting the liner...he may felt asleep on the drill while honing? Running out of oil (low oil pressure) too much heat, piston got "stuck" with liner and force the liner to start moving just little bit and wear to a point that it got loose? They are semi-finisg liner so the shop needed to bore it, it use to have a good fitment at some time??? That's soo weird, my bloc is sitting in the garage with new liner (exactly the same)...

 

[FJBen]

How knows, shop may have use stone to clean the engine bore prior inserting the liner...he may felt asleep on the drill while honing? Running out of oil (low oil pressure) too much heat, piston got "stuck" with liner and force the liner to start moving just little bit and wear to a point that it got loose? They are semi-finisg liner so the shop needed to bore it, it use to have a good fitment at some time??? That's soo weird, my bloc is sitting in the garage with new liner (exactly the same)...

yeah hard to tell, but usually when that liner moves it's blown headgasket time. And since they didn't use sleeve retainer it wasn't staying in place and probably not transferring heat at all correctly if it was that loose.
Semi-finished shouldn't have anything to do with the liner fitting in the block. I'd be more weary about them honing the block for looser fitting sleeve or possible the counterbore wasn't set right allowing that sleeve to move.

Maybe when that bearing cap was going, it was transferring way too much heat moving that liner because it wasn't secured/set properly. I'm guessing that was that weird noise it was making as it lost cylinder pressure when that sleeve(s) let loose. Dry sleeves on the 3B/13BT are press fit tight and a PITA to remove.

Sounds like there were multiple problems with this one.

 

[OGBeno]

Who the fawk knows at this point. Machinist isn't budging from his position that everything was good on his end.

Any way, I don't care anymore. I'm done with this motor. It's over with.

 

[OGBeno]

 

[Indestructible 47]

That's always a good day. Really looking forward to the build.

 

[OGBeno]

That's always a good day. Really looking forward to the build.

Thanks mate.

For now, things will be on hold as I have paying customer work I have to attend.

Just in parts collecting mode now.

 

[OGBeno]

Very nice engine. Looks super low mile/usage.

 

[OGBeno]

Lower case half manufactured on 01/19/1991.

Block was manufactured and machined on 01/16/1991.

Classic JIT.

 

[rick_d]

ack no power steering port ot timing case

 

[OGBeno]

ack no power steering port ot timing case

Yeah. New one ordered. And it’s not cheap.