So guys,

I am in the middle of rebuilding a bought Clio 172 Cup track car. Full build thread here, if you are curious: https://www.mig-welding.co.uk/forum/thread...ar.111627/

Anyway.. I have a bit of a dilemma. You will see in the following pics, I have circled an area. In that area the wheel well is right up against the rear chassis rail, making it impossible to access to rust removal. What would you do?

I have tried using various tools etc to get in at it but to no avail. I think my only option is to either leave it as is, with some rudimentary attempt at treatment and just hope for the best.

Other option is to cut out the wheel well to get access and then just weld a flat panel onto the floor instead of the wheel well. I'm not concerned about losing the wheel well to be honest.. in fact it's really annoying and I would rather a flat floor.

Edit - I had meant to say that, it might seem a bit crazy to go to this extent for a bit of rust. I understand it is only a track build. But given, that I have gone this far (car stripped to shell). I don't want to leave anything to chance when it comes to rust, if you know what I mean.. last thing I want is to see bubbling there later on or result in compromised integrity etc... now is the time to treat it.

Click image to enlarge

Click image to enlarge

Click image to enlarge

Hand held sand blaster

Sand blaster for sure, will make sort work of that… followed by lots of work cleaning up!

I used to track a 172, great little cars  Sold - Bell a 2015 MY16 Loire Blue Autobiography 4.4 SDV8
Previously George a 2007 MY07 Java Black VSE 3.6 TDV8
Previously a 04 MY04 Defender 90

Thanks guys..

I do have one of those pots and blasters.. I'll give it a shot. I'm not sure it will get it all.

I did have one crazy idea where I would plug all the holes and fill the area with a citric acid / water mix that I use for de-rusting.

Spray some aquasteel on the rusty area once you've done your prep, it turns into a glass like surface treatment and the rust is dead for ever. I used during my time working offshore in the harshest of environments and it was the only product that really worked treating existing rust and preventing further corrosion.

https://aquasteel.co.uk/ BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6