IMS failure???

[thstone]

Originally Posted by sepesusi63

For example most of the hydraulic lifters (or tappets) were jammed. So I needed to dismantle (not an easy task…) them and clean them properly. I hoped that I have not saved in wrong place with the hydraulic lifters??? I mean not replacing them???

All of the lifters and the lifter carrier should be replaced if you want 100% reliability - especially if there was enough debris in the oil to cause the lifters to jam up.

While it is common to clean them up/re-use and take your chances, this practice is what caused my repeat engine failure after a full rebuild when the used lifters and used lifter carrier failed within several hundred miles after the rebuild.

Best of luck with the rebuild and keep us up to date on your progress!

[flaps10]

I just saw your tear down pics. Damn. You might be able to save the crank shaft and bearing carrier. Have it all ultrasonically cleaned and the crank checked for straightness and magnafluxed.
That IMS is garbage.

You're right, the toughest part is deciding what you can reuse.

Were any rod bearings spun or have you torn it down that far yet? Don't forget to order the tiny oil nozzles that go in the bearing carrier.

[sepesusi63]

Originally Posted by flaps10

I just saw your tear down pics. Damn. You might be able to save the crank shaft and bearing carrier. Have it all ultrasonically cleaned and the crank checked for straightness and magnafluxed.
That IMS is garbage.

You're right, the toughest part is deciding what you can reuse.

Were any rod bearings spun or have you torn it down that far yet? Don't forget to order the tiny oil nozzles that go in the bearing carrier.

All of the bearings were in good condition. Same as the piston rings.
But still I desided to change them all. Just because the engine is open.

[Smallblock454]

Hi sepesusi63,

first thanks for the update. Think you're right with your diagnosis - first ims failure and than failed all other things.

Hope you can get everything cleaned up. Sometimes it's hard to get all debree out of the engine. I recommend to clean everything really really careful.

Hydraulic lifters: to be honest - i would recommend to replace them all.

You didn't mention the chain tensioners in your listing. I would also recommend to replace them all.

Also i would recommend to replace piston rings and crankshaft bearing shells and inspect the cylinder liners carefully.

Because the engine and gear box is out of the Box check the 2 mass fly wheel.

Regards from Germany
Markus

[sepesusi63]

Originally Posted by Smallblock454

Hi sepesusi63,

first thanks for the update. Think you're right with your diagnosis - first ims failure and than failed all other things.

Hope you can get everything cleaned up. Sometimes it's hard to get all debree out of the engine. I recommend to clean everything really really careful.

Hydraulic lifters: to be honest - i would recommend to replace them all.

You didn't mention the chain tensioners in your listing. I would also recommend to replace them all.

Also i would recommend to replace piston rings and crankshaft bearing shells and inspect the cylinder liners carefully.

Because the engine and gear box is out of the Box check the 2 mass fly wheel.

Regards from Germany
Markus

Hi Markus,
Thanks for yoyr feedback.
Everything cleaned (2 or 3 times ) and all wearing and moving parts replaced, including piston rings, bearings, chain tensioners and also hydraulic lifters (after reconsideration), etc.
Finally got the full gasket set from UK this week. So now I can really start the assemply with full swing
Desided to try ceramic IMS bearing from Germany (FVD Online Shop - FVD10590103 - Intermediate Shaft (IMS) Repair Kit "M96.Single Row" Ceramic -). Let's how it will work, but looks great at least.
Now going back to my garage again

[Mig]

Sorry to hear about your loss.

Can you tell us if this was the original IMS bearing which failed or was it replaced at some point?

[sepesusi63]

Originally Posted by Mig

Sorry to hear about your loss.

Can you tell us if this was the original IMS bearing which failed or was it replaced at some point?

Hi,
Yes it was the original IMS bearing that failed.
Car has got about 118.000 km on clock.
Probably bearing has been gone already for a while, but it was only now when the main chain tensioner got cut causing the visual damage.
I bought the car only 2 months before. Last service was done at 110.353 km in Porsceh Shor in Germany, so I desided to change the oil only when I will but the car for winter storage. Well, I did not reach that point, since the engine failed by beginnming of August last year.
This is just to explain why I did not notice the "failing IMS bearing " symptoms in advance!

[LAP1DOUG]

Best wishes to you on getting it back together and running reliably.

Good luck.