[b48selim]

I have a 2023 civic SI that was in an accident. The bolts and mounting bracket that hold the engine block to the frame snapped rendering the block useless (unless aluminum welding is done). I was planning on getting it welded up as it is a very small piece however, after asking around the price of welding would be around 2-3k with proper workmanship and still it won't be up to spec. I decided on going with the engine replacement route however when trying to source an engine I encountered a problem, the 2023 SI shares the same engine as the regular civic which is the 1.5L Turbo however I wanted to make sure if it would fit and work with the SI as there is a large difference between horsepower.
1. Does the Si and regular civic engines share the same internals or are there any differences?
2. Is the horsepower gain done through the tunning of the engine or is it done through a larger turbo?
3. Would it make more sense to just replace the block (it will cost more because both engines need to be broken down)

 

[cleanneon98]

It’s not really a large power difference. I believe the internals are slightly stronger on the Si and it runs more boost. Probably cheaper to just replace the whole engine as a long or short block as needed and sell yours for parts. But this should all really be the insurance company’s problem to figure out and get you patched up

 

[Zeroptzero]

That welding cost seems outrageous, but you likely know more than us. I would still like to see an Si motor in a Si vehicle . You can certainly tune the base motor to be as powerful as the base Si.

 

[dxdxto]

The bolts and mounting bracket that hold the engine block to the frame snapped rendering the block useless

Jeez... I thought it's a basic engineering to design these things so that the engine mount is the weaker link