I found a crack near the engine mount of my Honda CRX 91 (the part closer to the front wheel)

I have a racing clutch and it is producing a big shock when I shift!

I welded the chassis but recently the crack is visible again.


I thought of trying reinforcement and see if it works.. are there any better method to repair the chassis?

or do you think that repairing a cracked chassis is useless?


Thanks in advance!

 

You might get better help in the welding / fabricating section.
Reinforcement would definitely help but more importantly how confident are you with your welds? Are your welds penetrating?

You shouldn't have any problems fixing it as long as it's done properly.

 

drill the crack before welding or it will never stop

 

why? please explain your reasoning.

 

yes you drill a hole at the end if the crack it relieves the stress. depending on how thick the metal is, bevel the edges where you are going to weld. make sure its not just surface welds, make sure it penetrates. you should post in the welding / fab forum

 

pics?

 

Take it to a professional welder.

 

if u dont have the experience to know about drilling the holes then id take it to a professional. Thats just my opinion though.

 

Why drill a hole? That is the ghetto way of doing it. What you need to do is grind out the crack completely and fill it in. If it is cracking/splitting the metal all the way through then you should be able to just weld it back up after little prep. That material should not be that thick right there so beveling it would be extremely unnecessary. For the most part you don't even need to bevel 3/8" plate... I always bevel 1/2" plate and up. All pipes (when butt connected) should be beveled for proper seal for higher pressures, but we are not piping in this case. If you feel uncomfortable with that then weld some kind of back strip to it for reinforcement.

Also what are you using to weld it up? I assume you are just MIG welding it. If you are then you have to put a lot more than a couple passes on it as well as being sure you are applying it properly. It would be better to stick it (preferably with 7018 with a DC machine). 7018 rod has a 70,000 LB. PSI strength rating when applied correctly. Penetration is key, especially in parts that are in stressed areas.

I am a Indiana State Certified welder, so don't let some of these clowns push you in the wrong direction. Post a picture of your welds, I am sure you are not getting good penetration and are welding too cold.

 

 

sorry for posting large images. the chassis is welded once. and you can see that a little left to the current crack.

why does it cracking like this? its visible from the inside as well....

I went to correct wheel alignment and they said that the caster is unable to correct, due to an unbalanced formation of the chassis.

and he suggested me to take it to a mechanic and re-correct the formation of the chassis, and as he said that could have happen due to an accident.

what do you suggest? should I try to get a new car???!!! or do you think that this can be repaired?

 

listen to Neva , he knows whats up he's a pretty smart ****.

 

thanks for all replies. and any other ideas would be welcomed. thanks again!

 

Your alignment is off so you really ought to get it up on a frame rack and set it back in place before you weld.
This is the second crack you have so figure something is really wrong and it's going to crack again.
Dunno... a new chassis is $ though and it might cost about the same as a pro dealing with it on a frame rack and weld.

 

Holy sheeeiiit. That is a big crack.

I say just do as 4drEF suggested and take it to a frame shop. There has to be an underlying problem that's causing this.

 

yeah that crack is scary. I would be looking for a clean shell rather than deal with that BS.