Piston crown damage. Replace or not?
#1
Piston crown damage. Replace or not?
Hello guys, I finally was able to get myself a 2000 Discovery II. The engine that came with had a damaged cilynder wall and most likely the whole block was useless, so I decided to get a working engine and do a full overhaul on it (gaskets, seals, injectors, piston rings, piston bearings, sensors, etc). Today after removing one of the heads I noticed that on one of the pistons has a small dent on the crown (maybe from the valve hitting it?). My question is, do y'all think it will be ok to keep the piston or replacing it would be a better option?
I inspected the head and valve and they look fine and with no visible damage, also I cleaned the crown for further inspection, so it was no steam cleaned when I removed the head.
I would really appreciate any feedback since I'm a noob with this Bosch V8 engines.
Thanks.
I inspected the head and valve and they look fine and with no visible damage, also I cleaned the crown for further inspection, so it was no steam cleaned when I removed the head.
I would really appreciate any feedback since I'm a noob with this Bosch V8 engines.
Thanks.
#2
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Bal D Correa (09-16-2019)
#3
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Bal D Correa (09-16-2019)
#4
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Bal D Correa (09-16-2019)
#5
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Bal D Correa (09-16-2019)
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Bal D Correa (09-16-2019)
#7
Do you think that my bolts are so tight because the head is wrapped?
Also, after all the struggle with these bolts, I'm seriously considering using ARP studs.
#8
i had a head bolt that took me several weeks to get out using a combination of grinding and drilling into the bolt. i don't know that heating the bolt will help -- it's going to cause the bolt to expand and get even tighter. you'd want to heat the block, if anything, which is going to be difficult.
https://landroverforums.com/forum/ge...estions-78704/
https://landroverforums.com/forum/ge...estions-78704/
Last edited by mollusc; 09-16-2019 at 02:12 PM.
The following users liked this post:
Bal D Correa (09-17-2019)
#9
i had a head bolt that took me several weeks to get out using a combination of grinding and drilling into the bolt. i don't know that heating the bolt will help -- it's going to cause the bolt to expand and get even tighter. you'd want to heat the block, if anything, which is going to be difficult.
https://landroverforums.com/forum/ge...estions-78704/
https://landroverforums.com/forum/ge...estions-78704/
I banged with a rubber mallet a 15mm hexagonal impact socket on the bolt and it work without issues
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