Thread: Time Attack BRZ
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Old 04-25-2021, 02:55 AM   #183
JDwhiteWRX
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Member#: 190502
Join Date: Sep 2008
Chapter/Region: International
Location: Sydney, Australia
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I worked on the transmission mounts yesterday but ran out of time before finishing them. I got a fair bit done so here is the progress so far.

I didn't want anything below the frame rails as my flat bottom will be bolted up hard against it. So the mount is to stay up inside the tunnel. This is easy with a track car because I can access the bolts from inside the car.

I start by reinforcing the ultra thin sheet metal that the tunnel is made from with some additional 1.6mm sheet to tie into that existing reinforcing bracket.



My mig welding still sucks but it will hold, penetration looks good on the other side, its just not pretty. I use a 3mm plate over the top of the reinforced tunnel.



I have a matching 3mm plate inside the tunnel.





I've welded the nuts to the plate, makes it simple to install plus one of them will be inside the tube so I won't be able to get a spanner on it later.



Then its just a length of 1.75" roll cage tube to span the gap, very light and very stiff.



I welded the majority of it lying on my back under the car, it came out nice.



So this is as far as I got. All I need to do now is extend some plate out to those poly mounts and add some gussets and its done.

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