Quote:
Originally Posted by mikedsilva
um
wow.
That is a massive difference!
woud be interesting to measure the thickness of the glyco bearinngs with a quality micrometer and ball (for the concave side).
Do you have the packet they came in? Where were they manufactured and the date?
They will obviously be replaced as an extra 2 to 3 thou means they are junk!
On the topic of splitting the case; I have ONLY done a top end once since the owner had receipts for proof of a full rebuilt not that long before (in terms of miles, not time).
The engine I am working on now, is being rebuilt mainly for oil leaks and a clean bill of health. It was running and made good oil pressure...
Every rod bearing showed wear.
Every main bearing showed minor wear.
Without pulling it apart, how do you know? I would say that MORESO for diyers, they should pull it apart.. I don't know too many diyers who would want to go through the whole process again at a later stage. Most want to do it once, and once only.
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I bought a euro Carrara engine. The short block was assembled by a shop and all the other parts were included in boxes. There was paperwork describing the work the shop had completed and it all looked legit. Our policy is not to trust anything so we disassembled the engine. They used glyco rod bearings and did some other curious things. It would have been a problem if it went out with our name on it.
We had another engine come in from a well known shop. Supposedly a 3.2 short stroke. It wasn’t running right and the customer had gone to a couple shops to have it tuned. Nobody could make it run right. We disassembled the engine and noticed some problems immediately. The engine still had stock 3.0 cis p&c’s. No way it was a 3.2. What’s worse, the pistons were clocked 180 degrees out. To keep the valves from hitting the pistons, they used a buttload (technical term) of spacers. There was a ton more tomfoolery but that’s the particular thing I remember about that engine. I mentioned it to our machinist and he said he’s heard all kinds of stories about the shop. Still, the shop is championed in some circles.
These engines are pricey but it gets really expensive when you have to do something over again.