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midplate thoughts #1550197 12/19/13 03:39 PM 12/19/13 03:39 PM
Joined: Oct 2010 Posts: 23 illinois usa K king coronet OP member
king coronet OP member K Joined: Oct 2010 Posts: 23 illinois usa	Hi everyone. Just started a tube frame chassis and looking for opinions on mounting a midplate. I was thinking about using a full plate, like an altered and supporting it off of the dash bar and lower frame rails with uprights between the rails and dash bar,using the midplate as part of the firewall. Can it be bolted in,planing on a steel midplate 25.4 cert? Any pictures ? Thanks Al MERRY CHRISTMAS HAPPY NEW YEAR

Re: midplate thoughts [Re: king coronet] #1550198 12/19/13 04:40 PM 12/19/13 04:40 PM
Joined: Apr 2013 Posts: 345 Nebraska 4 451Cuda enthusiast
451Cuda enthusiast 4 Joined: Apr 2013 Posts: 345 Nebraska	Quote: Hi everyone. Just started a tube frame chassis and looking for opinions on mounting a midplate. I was thinking about using a full plate, like an altered and supporting it off of the dash bar and lower frame rails with uprights between the rails and dash bar,using the midplate as part of the firewall. Can it be bolted in,planing on a steel midplate 25.4 cert? Any pictures ? Thanks Al MERRY CHRISTMAS HAPPY NEW YEAR Bump/Would like some input as well...planning my chassis build and undecided on best way to do the midplate.

Re: midplate thoughts [Re: king coronet] #1550199 12/19/13 05:04 PM 12/19/13 05:04 PM
Joined: Nov 2004 Posts: 6,890 North Alabama M Monte_Smith master
Monte_Smith master M Joined: Nov 2004 Posts: 6,890 North Alabama	Quote: Hi everyone. Just started a tube frame chassis and looking for opinions on mounting a midplate. I was thinking about using a full plate, like an altered and supporting it off of the dash bar and lower frame rails with uprights between the rails and dash bar,using the midplate as part of the firewall. Can it be bolted in,planing on a steel midplate 25.4 cert? Any pictures ? Thanks Al MERRY CHRISTMAS HAPPY NEW YEAR This is the way a car SHOULD be built. The midplate area is an integral structural part of the car to make one stiff. As for mounting, I usually frame my opening from tubing as you describe and then weld straps of narrow plate inside the opening. The 1/4" alum midplate then bolts to those straps all around the opening with 1/4-20 bolts and the plate sits flush with the outside edge of the tubing. Basically the midplate becomes a "bolt in" firewall for that section of chassis. Monte

Re: midplate thoughts [Re: Monte_Smith] #1550200 12/19/13 05:19 PM 12/19/13 05:19 PM
Joined: Jan 2012 Posts: 2,652 Stuttgart, Arkansas rickseeman master
rickseeman master Joined: Jan 2012 Posts: 2,652 Stuttgart, Arkansas	Midplate is good. Mine attaches at 10 points. 7964243-frame2.jpg (92 downloads) 2011 Drag Pak Challenger

Re: midplate thoughts [Re: rickseeman] #1550201 12/19/13 09:51 PM 12/19/13 09:51 PM
Joined: Nov 2004 Posts: 4,330 Lynchburg, VA Leon441 master
Leon441 master Joined: Nov 2004 Posts: 4,330 Lynchburg, VA	If I were redoing my car that is exactly what I would do. Leon Career best 8.02 @ 169 at 3050# and 10" tires small block power.

Re: midplate thoughts [Re: Leon441] #1550202 12/20/13 01:47 AM 12/20/13 01:47 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	My mid plate attaches at 6 points but its just a single rail car.. actually both my cars are the same single rails with 6 points but I also dont use the mid plate as part of the fire wall... the tunnel comes up to the verticals and thats where the fire wall starts.. I have small cars so I keep the tunnel pretty tight to the trans for room inside

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