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YOUR RESEARCHTo borescope or not to borescope....
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Replace ...yes all 6 were done
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...that is the question!
What's the general thoughts on the need for a borescope of a hartech rebuilt engine?
My own research is has led me to conclude\ponder the following.
1. Its highly unlikely unless the engine has had some other failure where bits of metal made their way inside. Overheating etc
2. Is it worth the expense in any case when the chances are there will be polishing marks on the nikasil liners that only an experienced hand can separate from real scoring.
3. If the engine has has some issues and the nikasil bores are scored I'm guessing it's the usual telltales....smoking left tail pipe on cold start, excessive oil usage.....though a seller is unlikely to admit this.
4. Don't worry about it, buy the car, drive the car and get it borescoped at its next major service? Or is this just plain recklessness?
Any other tell tales if the engine has been cooked, post rebuild?
Were all 6 replaced...Yes all 6 were done. I'd just read from an old post Baz had put on PH ages ago that it's possible to rescore but its always down to some other engine issue that would had done the same to any engine.
So yes whilst Hartech's solution fixes the issue it's feasibly possible something's happened in the subsequent mileage.
I suppose it's the old "you pay your money you take your chances" line isn't it.
I'm guessing if it only had 3 done you'd probably borescope it despite the slim chance of the non thrust side being scored.
I sat with Baz for an hour or two a few weeks ago talking engines and he said that when a Hartech (6 Nikasil bores) engine has had an unrelated failure and debris has been sent around the engine the bores have held up fine, a testament to how strong the Nikasil bores are.
