For guys that have been working with bondo for awhile. I have been looking the temperature specs of bondo. I would like to know how much heat can bondo handle such as an engine bay. I have pretty much all the holes in my project cars engine bay welded up and I wanted something that I can use to smooth over the whole engine bay such as bondo that can with stand the high temperatures with cracking. Does anyone know if bondo will work or not and if not what can I use????

 

bon-don't

 

then what do I use then

 

I used mar glass which is a thick biberglass fill. Then used bondo over top that, just a little bit to smooth the glass. Check my tread on this page about smoothing engine bay, got finished pics

 

I was told to use all-metal!
It's been over 7yrs and not one problem to date.

 

yeah almost stocks engine bay is sweet, once you weld all the holes just give it a skim coat of bondo to smooth it out, its when you put it on thick where it will crack

 

Where did you get the mar glass from???

 

what do you recommend doing just bondo or mar glass and bondo???