FastKat

iTrader: (10)

What do I do with these crevices on the inside of the pan? Should I fill them with JB weld or just let them go? The pan holds water just fine, but I am wondering if I should take the extra step and use JB Weld too.

Here's the inside of the pan that I am considering filling with JB Weld. Any suggestions??







Here's the outside of the pan.


Before welding, we tightened the pan down against a junk block. This helped to minimize warping. Unfortunately we did not have easy access to the inside of the pan.

So JB Weld the inside or no?

More pics at my website!

Thanks, -Dave

01WS6/tamu

iTrader: (37)

Leave it alone you should be ok. The quality of the welding looks to be fairly good. Aluminum is a bitch to weld and get awesome results.

67RSCamaroVette

iTrader: (63)

i'd make sure it doesnt leak and leave it at that. Id hate to have a piece of JB weld chip off under engine distortion and end up in your oil pickup. ive found that using thin stuff like solvent is best to find leaks.

'JustDreamin'

Yeah, rubbing alcohol or laq. thinner will find leaks if you have them, much better than water (water has higher surface tension and "needs" a bigger hole).

I wouldn't worry about the inside surfaces.

'JustDreamin'

FastKat

iTrader: (10)

Cool, I guess I can fill it up with rubbing alcohol then and see if I find any leaks. I don't want to contaminate the pan, because if we have to weld again and there are solvents, etc in the pores, it's not going to weld very well.

Whistler

iTrader: (46)

Just blow out all the cracks to make sure there's no loose slag and bolt it up.

FastKat

iTrader: (10)

The problem is that I largely get one shot at doing this right… I don’t want to bolt it up, put it in the car, fill it with oil and THEN find out I have a leak. If I do have a leak, I have to drain it, take it off the car, pressure wash it, run it through the dishwasher (literally) and then start to weld hoping I got all of the crap out of the pores. If there’s still oil or solvent in the pores it will not weld well.

I’m wondering if the JB Weld will be reliable insurance to get it done right the first time.

01WS6/tamu

iTrader: (37)

I would not chance it because with time and age the oil can begin to effect the bite of the jb weld against the aluminmum and cause it to break free. Especially with heat cycling and the vastly different expansion rates of the two materials.

Mark IXZD 150

iTrader: (1)

I vote against the JB Weld in the oil pan. The solvent test will reveal any leaks and won't dirty the pan if you need more welding.

gnx7

iTrader: (28)

Rubbing alcohol will evaporate without leaving any residue. If there is residue... spray it with brake cleaner to clean it up.

'JustDreamin'

Both rubbing alcohol and laq thinner will readily evaporate leaving you ready to weld.

We used to use laq thinner to clean parts to get ready to weld at the last shop I worked at. It doesn't stay long, especially if you put a little heat in the part.

'JustDreamin'