The Ford Barn - View Single Post - 28-29 coupe roadster rear subframe rivet. ?????????

rotorwrench · 08-01-2022, 04:26 PM

If they are original parts then they should be 3/16. Rivet holes get expanded a bit during the riveting process so 13/64" may be about where they end up. Round heads were used where they are not obvious for a flat floor. 3/16" is common for the subframe and rear subframe cross member. Big Flats Rivet sells kits. The big 1/4" rivets are for the main frame structure and stuff like the running board brackets are heavier at 5/16" but the body subframe didn't need the really large rivets like that. Brazer heads are used where a flat floor needs a rivet. There are the odd ones on the 28/29 cowl side panels but they are also spot welded.

08-01-2022, 04:26 PM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,409	Re: 28-29 coupe roadster rear subframe rivet. ????????? If they are original parts then they should be 3/16. Rivet holes get expanded a bit during the riveting process so 13/64" may be about where they end up. Round heads were used where they are not obvious for a flat floor. 3/16" is common for the subframe and rear subframe cross member. Big Flats Rivet sells kits. The big 1/4" rivets are for the main frame structure and stuff like the running board brackets are heavier at 5/16" but the body subframe didn't need the really large rivets like that. Brazer heads are used where a flat floor needs a rivet. There are the odd ones on the 28/29 cowl side panels but they are also spot welded.