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That's a problem. Need to take it apart and see whats going on. That looks like the htrust bearing main, thrust washer is probably toast, as well as the crank.
If there wasn't a problem, I don't know if its an issue.. Yeah, it looks like heat build up-- but I would think it would cause the bearing to fail if it was a problem.. As stated earlier--you took this apart because...?
i bought this engine from an engine builder in my area. I saw the car started up and it sounds great which is when i decided to buy it. Every parts in the engine were rather new.
The reason i opened up the crankcase was just to snap pics (excitement of having a fully forged internals) of the internal parts before i decided to transfer the engine to another evo body that i have. This is when i noticed these sort of rainbow burning marks.
The engine builder who sold me the engine said it shud be ok to use as it's just a slight burn and that he had already replaced new bearings,however, i'm still worried and i need advise on what should i do. should i just return it back?
i bought this engine from an engine builder in my area. I saw the car started up and it sounds great which is when i decided to buy it. Every parts in the engine were rather new.
The reason i opened up the crankcase was just to snap pics (excitement of having a fully forged internals) of the internal parts before i decided to transfer the engine to another evo body that i have. This is when i noticed these sort of rainbow burning marks.
The engine builder who sold me the engine said it shud be ok to use as it's just a slight burn and that he had already replaced new bearings,however, i'm still worried and i need advise on what should i do. should i just return it back?
4b11slayer: yes i'm using a twindisk.
The reason i ask is because ive seen damaged crank and thrust washer on a evo 8 with low miles and had a twin disk. No other theory but maybe unwanted pressure from a non adjusted clutch pedal. If the engine builder is saying he knows about it, a its ok or b he flipped a coin and idk that i would want that.
i bought this engine from an engine builder in my area. I saw the car started up and it sounds great which is when i decided to buy it. Every parts in the engine were rather new.
The reason i opened up the crankcase was just to snap pics (excitement of having a fully forged internals) of the internal parts before i decided to transfer the engine to another evo body that i have. This is when i noticed these sort of rainbow burning marks.
The engine builder who sold me the engine said it shud be ok to use as it's just a slight burn and that he had already replaced new bearings,however, i'm still worried and i need advise on what should i do. should i just return it back?
4b11slayer: yes i'm using a twindisk.
The reason i ask is because ive seen damaged crank and thrust washer on a evo 8 with low miles and had a twin disk. No other theory but maybe unwanted pressure from a non adjusted clutch pedal. If the engine builder is saying he knows about it, a its ok or b he flipped a coin and idk that i would want that.
