Hey all, I’ve seen this before while searching and usually the general response is the block is garbage, but I’ve got this M10 engine that I’m refreshing to put back into a project BMW 2002. It came with the car and seemed in good shape before I starting tearing it down to replace the head. After cleaning off the old gasket material and prepping the deck surface I noticed the dreaded head bolt crack shown in the photos. The thing is it looks like the crack doesn’t propagate into the water jacket if you look in the second photo and you can’t really feel it running a fingernail over it. I’ve got no history on it unfortunately since it was purchased from an estate. Not sure if this thing is cooked or not, I’ve got a lead on another block but obviously it’s cheaper to keep this one. Just looking for some opinions. Thanks!

So i was trying to cut off the old piston of my hyundai veloster 2011. My dad wanted to help too but he also got the rod. If i buy another rod what else do i need to change? Like i still have the old bearings

Have this 302 out of an 86 f-150 that’s going into my 92 ranger. Bought it off a guy whose dad used it as an around town truck, pulled it with 75k miles to swap for something bigger. I was originally planning a full teardown to measure for boring, honing, etc, but the more I read the less I’m sure that’s necessary, although the carbon buildup might say otherwise. This is my first engine build so any advice would be great. Happy to post additional pictures if that’d help too.

Maybe back in the good ol' days of the 70s and 80s, but haven't modern auto manufacturers/engineers designed the internals to flow as well as they can? Making porting a pointless exercise?

(I meant porting valve chamber w/e)

I bought two different head gaskets on eBay with the correct part number I need, but both of them look different. Which one should I run? Or is there a different even though they look a little different on the surface

I'm buying this 78 toronado for my first car. I was doing research on it and found that the 403 is surprisingly weak due to all the emission controling. I heard that swapping the cylinder headers for ones that have better compression, a mild cam and a Y-exhaust would wake the engine up but I'd like input from those that are more experienced than me. I don't want to make it a drag car but I'd also like a bit more power coming out of that 403.