Firewall bracing for 66' 1600

[Kevin from Boston]

Just found big cracks in firewall behind both master cylinder and clutch on my '66 1600. Any suggestions where I can get brace or what anyone's done and how to fix this. Also, anyone know how far back I can rebolt seats. On drivers side I see a strut that turns up just before back seat floor bar. Anyway to overcome that?
Thanks for any help.

[Skyman]

Here is a brace that Dean sells. I have one on my car. Works great.

http://www.datsunparts.com/1342" onclick="window.open(this.href);return false;

[Nissanman]

My 1500 had that ramp behind the drivers seat pummeled in and a new set of mounting holes drilled so that the seat could be further back.
Very agricultural "modification".
I guess all you can do is dismount the seat rails and see how far back you can move them before requiring a BFH

[zippy67roadster]

Here is a brace that Dean sells. I have one on my car. Works great.

http://www.datsunparts.com/1342" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

He said he had a 66, that part is for late cars only. There is currently none available for pre 1968 cars. I would suggest welding and then grind smooth so the master cylinder will mount flush again.

[Skyman]

Here is a brace that Dean sells. I have one on my car. Works great.

http://www.datsunparts.com/1342" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

He said he had a 66, that part is for late cars only. There is currently none available for pre 1968 cars. I would suggest welding and then grind smooth so the master cylinder will mount flush again.[/quote

?? I have one on my 67.5?

[notoptoy]

^^ Me too!
I think the brace is therefore for Dual master cylinder models with the "pocket" in the firewall.

[dbrick]

I had a 66 that simply had a steel plate bolted to the firewall over the sheetmetal and the cylinders bolted through. There was a bolt on each corner to hold it to the firewall.

[zippy67roadster]

Here is a brace that Dean sells. I have one on my car. Works great.

http://www.datsunparts.com/1342" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

He said he had a 66, that part is for late cars only. There is currently none available for pre 1968 cars. I would suggest welding and then grind smooth so the master cylinder will mount flush again.[/quote

?? I have one on my 67.5?

Your right. I forgot about the half year cars with their dual masters.

[Skyman]

^

And I forgot that the 66 only had a single brake master. Epic fail.