Piston Rings Worn Out, Time for a Rebuild

[gringeltaube]

Pistons are all the same.....

Are they, all 6...??

 

[rustystud]

Are they, all 6...??

Good catch Gerhard. I didn't see that at all. Of course my eyes aren't what they used to be.
Of course that could just be one of his new style pistons laying around.

 

[gringeltaube]

New style pistons? The pistons of those LDS-kits in question don't have a skirt.

But I do remember now that he once mentioned that in his kit there was one piston looking different... Hope they are the same weight at least.

 

[V8srfun]

If they are not the same weight that is a huge problem

 

[Csm Davis]

Yeah I was asking about the piston that gringeltaube has circled I don’t have that fancy software to color on pictures.

 

[Plane Fast]

-tried to post a pic, but would not work-

 

[74M35A2]

*burp*. Should have taken pictures and looked at them. Ha! We missed that, focused on ring count. Yes, one piston was different when initially shipped, but they since shipped a match. The above was not observed, I believe. Long block is together, we'll see what he wants to do. Thanks for the grab.

 

[Wildchild467]

Are they, all 6...??

No sir. This is a mistake and we have the correct ones. Very good catch but this was one my buddy Zach and I mounted up on my old piston. so what you see there is my old piston mounted on a connecting rod. This was changed and all of my pistons now are like the ones seen in the vise. Again, very good observation. When I was cleaning the pistons in the vise there, I did all 6 and recalled them all sitting flush to the vise.

This is why pictures are good, its a good sanity check if we miss something during a build or want to look back and see what we did. With my memory, I cant even remember what i had for breakfast sometimes

 

[Wildchild467]

*burp*. Should have taken pictures and looked at them. Ha! We missed that, focused on ring count. Yes, one piston was different when initially shipped, but they since shipped a match. The above was not observed, I believe. Long block is together, we'll see what he wants to do. Thanks for the grab.

Remember when we installed pistons? We installed #6 working toward #1 cylinder putting in last. It was #1 cylinder that we assembled the connecting rod on and was the last one for me to change over to the new piston.

 

[o1951]

I wish you the very best of luck!

Half the time, when I did not have enough dough, and tried to save a few bucks by re-using "used but good" parts, I wound up doing the job over again in about year or so.

 

[74M35A2]

I wish you the very best of luck!

Half the time, when I did not have enough dough, and tried to save a few bucks by re-using "used but good" parts, I wound up doing the job over again in about year or so.

We'll, you did better than Hot Dog here. His rebuild with new parts didn't even last a summer, until it was dropping terds out the draft tube. Maybe by his re-use of parts this time, it will go further/longer.

You can tell I just went to his garage and passed out in the corner last night.

 

[74M35A2]

Remember when we installed pistons? We installed #6 working toward #1 cylinder putting in last. It was #1 cylinder that we assembled the connecting rod on and was the last one for me to change over to the new piston.

.

I don't know anymore. By the end of this, you'll have more pistons than a B-29.

 

[74M35A2]

We got the long block together including slugs, heads, and oil pan. I think he has since added on the manifolds, because now he says his turbo compressor impeller is rubbing the housing. I'm trying to talk him into a C model if he is not rebuilding his D. This thing is costing him $ every time he turns the garage lights on.

 

[Wildchild467]

I have the manifolds on now and rocker arms bolted down. Before I put the turbo on, I checked the turbine shaft for looseness. Yup, she is loose. I can barely see a spot on the casting where it looks like the impeller has touched the housing. I'm wondering about putting a rebuild kit in it and balancing the shaft. The turbo worked great before making good boost. I have my eyes out for another turbo or putting a rebuild kit in this one. Decisions, decisions.

 

[ShawnIfert]

I have seen plenty bad new parts over the years working on and testing diesel. I have had brand new cats, Cummings and detroits blow up on the test stand for one reason or another. I would put a new piston kit in hole #2.
I am running the same piston kit in a lds configuration and no issues so far. I have converted my ldt. It just maybe a bad piston kit. I have read the thread. I did not see an lds conversion mentioned. I pulling more than 50 hp over if you are still ldt. Not one problem with blow by. When it's very hot I have some, but nothing abnormal. But it is was 20f when I ran it.

I do have a spare d turbo nos I would sell you for 550. I am not at home, I will not be back until April. I am in Mali working in the mines.

 

[Squirt-Truck]

Any update?

 

[74M35A2]

His turbo had excessive play so he bought a NOS one, due to arrive any day now. Once that is on, it will still be a while because he won't drive it when there is any salt on the road. So, I estimate another 1-2 months before he starts it for break-in.

 

[WillWagner]

i have seen plenty bad new parts over the years working on and testing diesel. I have had brand new cats, cummins and detroits blow up on the test stand for one reason or another. I would put a new piston kit in hole #2.
I am running the same piston kit in a lds configuration and no issues so far. I have converted my ldt. It just maybe a bad piston kit. I have read the thread. I did not see an lds conversion mentioned. I pulling more than 50 hp over if you are still ldt. Not one problem with blow by. When it's very hot i have some, but nothing abnormal. But it is was 20f when i ran it.

I do have a spare d turbo nos i would sell you for 550. I am not at home, i will not be back until april. I am in mali working in the mines.

fify

 

[Wildchild467]

Like 74M35A2 said, Mainly waiting on the turbo. I still have to double check things underneath to make sure they are all tight, put the transmission tunnel back on (from doing the clutch), adjust the valves, put engine oil in it, install valve covers, turbo, related plumbing, buy a heater hose (straight piece will be easy to get), fill with coolant, drain fuel system to get the 25% of WMO out of the fuel tank and fill with 100% diesel.

I hope everything turns out ok... I'm not doing this again.

 

[daytonatrbo]

Like 74M35A2 said, Mainly waiting on the turbo. I still have to double check things underneath to make sure they are all tight, put the transmission tunnel back on (from doing the clutch), adjust the valves, put engine oil in it, install valve covers, turbo, related plumbing, buy a heater hose (straight piece will be easy to get), fill with coolant, drain fuel system to get the 25% of WMO out of the fuel tank and fill with 100% diesel.

I hope everything turns out ok... I'm not doing this again.

Just saw your piston post in the parts wanted section. Everything ok?