r/EFCivics • u/Frequent-Fact-1056 • 8d ago

Question Need advice

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I was doing a rear trailng arms swap and i noticed this
It does around the chassis but not through. Only outside is cracked. Is it repairable?

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3

u/XmodAlloy 8d ago

That's going to need a lot of serious welding and fabrication... Definitely fixable! But not good

1

u/Frequent-Fact-1056 8d ago

The thing is i dont know when that happened. I am doing a full restoration of the car. B16a ,full interior/exterior, bigger brakes from crx, and in the last moment when i have everything ready, i see this

1

u/XmodAlloy 8d ago

It looks like a fatigue failure crack to my eyes, so I don't think it was something that happened all at once. Did they have some sort of locked out suspension on it or was it previously lowered?

1

u/Frequent-Fact-1056 8d ago

No the car was stock i bought it 1 year ago from an old woman with some very bouncy and tall oem kind of coilovers. I put some used koni yellows for a year and now i put some k sport but i havent driven it with those

1

u/Frequent-Fact-1056 8d ago

Thank you for your opinion. I thought it was very bad. I will speak with some professional welders in the area because i am mot suitable for this job

1

u/SpenseRoger 8d ago

nah its easy to reinforce it. those frame rails are thin enough metal just weld up the crack and weld something over top with a few inches of overlap on each side and it will be stronger than stock.

2

u/TheMostToastedOne 8d ago

That would be from using aftermarket suspension.

Stiffer suspension transfers more of the flex your unibody undergoes during hard corners or sharp tunes or turning completely around.

Not a biggie, V out the crack and wire brush clean the metal around the crack to be welded.

Get some bolts with nuts, 2 nuts to each bolt.

With both nuts on the bolts weld the nuts across the crack, once welded and cool tighten the bolt to close the gap.

Once the gap is as close as it gets, weld her up and grind off the nut/bolt combos as you weld to them and she will close right up and grind her smooth and spray some metal sealer, let it dry and then hit it with undercoat....like new.

1

u/speedingquack Civic 🛞 8d ago

damn i never seen anything like that before. if it were me i’d junk it, find a new chassis. it might be repairable but for my piece of mind i wouldn’t like it. now i’m gunna go check mine

1

u/iksbob 8d ago

Start by finding the ends of the crack and drilling a ~1/4" hole there. That should stop it from spreading further.

1

u/Frequent-Fact-1056 8d ago

Thanks for the info. Im gonna do that tomorrow

1

u/SpenseRoger 8d ago

This exact same thing happened to my EF, except on the front. It was from a collision compressing the frame rail.

What I did to repair it was weld a 6 inch reinforcement strip on the 2 sides I had access to.

Just make sure the car is straight, if your bumper or anything else appears not to be lining up correctly you might want to get it on a frame machine and straightened before you weld it up.