S3 DD Lowered floor missing dimensions

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Last post
Last seen: 4 days 14 hours ago
Joined: 20/07/2020
Well for one i can't safely drive the car with the standard floors and I don't have a trailer nor a car with a tow bar. So getting the floors made whether by Arch or a third party is a necessity I ran out of time to call them today, re availability and pricing but as said it feels like I'm messing around a fabricator who quoted a very fair price and is trying to grow his business. I don't mind spannering on my own car, it's part of the ownership experience for me with a car like this. But I accept that people either don't have the skills nor the inclination to Scrabble around and fit their own floors. Everything is easier if you just pay someone else to do it :)
Alan Reeves
Last seen: 19 hours 2 min ago
Joined: 17/04/2014

I helped put a couple of floors in a friends car. Even with the real thing its hard work at best and that was with a lift and air riveter. I would not do one again.

Sometimes one just has to change ones mind ...



sforshaw's picture
Last seen: 2 min 9 sec ago
Joined: 17/04/2014

Having fitted lowered floors to both side of my car (on my own!) I agree with Alan. The original floors are 1.5mm sheet, the lowered floors are formed from 3mm sheet and substantially heavier and stiffer, I had to do a lot of adjusting/trimming to get a good fit, then removed them both to be powder coated and refitted. If the floors you have made are even less accurate than the Arch/Caterham originals it'll be a thankless task.

Also note that on the Arch lowered floors, unlike the original floors the outside edge is vertical not horizontal.


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Tazio's picture
Last seen: 2 hours 47 min ago
Joined: 17/04/2014

Hobbsy, you will need loads of steel rivets and an air riveter, and having built a few 7s I know my way around spannering the cars, but it was a no brainer to get Arch to do mine, when you have done yours, you'll know why.

Last seen: 3 hours 35 min ago
Joined: 30/09/2014

In a moment of madness or boredom I started to fabricate my own lowered floors based on the dimensions above - I still have them and although would fit with some further fabrication I would not be happy with appearance. Lesson learnt -  some jobs are best to leave to the experts! 

Arch can supply and the fit is not too difficult if travel an issue.



Last seen: 2 min 32 sec ago
Joined: 17/04/2014

You could always go about this the other way.  If you're approaching a time where you won't need the car for a while remove the current floor and measure the opening in the chassis.  I'll get round to making a lowered passenger floor at some point and this is probably what I'll do.  You know it will fit then.