Just measured my chassis and planning on having a 4"gap above my head to the top of the roll bar. This gives a total height of 46" if I have a 5.5" ground clearance. How does this measure up with everyone else? Is this low, high or pretty standard?

iirc the same height as the new ford gt

Yours is, or the ford gt is 46"?

i dotn have one lol the ford gt is 46

If you were to be racing, the MSA say 2 inches above a helmeted head. 4" would be fine if a little OTT for the road.

Andy

That's to allow space for the helmet when I wear it. Probably won't wear it all year round though, so may drop it by an inch yet.

IMHO When setting roll bar height you should draw a line from the top of the roll bar to the highest structural point at the front of the car - front top cross member probably and this line should clear your helmeted head. ie think how the car would come to rest upside down on a flat surface and make sure the top of your head isn't through the surface. (Yes i know real ditches etc aren't flat so its not perfect - if you want to b as safe as possifble weld in a cage!)

That's roughly what I did. The main hoop will be fairly upright and have two rear legs. And fully welded. I think it's safer and easier to do for me. Also can't see the advantage of bolting it in. Especially since there'll be a floor under the boot.