In some of the recent posts I have commented on using JB Weld.
Below is some pics in my old shop of one of our damaged housings we mounted on the wall.
The intake port you see there is actually JB Welded into the housing. Many of the racers did this to save money. You could buy custom housing from Mazda Competition in Comifornia but they were real expensive. The intakes were not JB'd but actual factory racing units. They would not sell to public unless you showed proof of racing licence, a rotary Engine and results from 3 races per year. Anyways the JB units worked well with no issues. Basically this took a stock 12A Engine from 100 hp to 247 hp (actual dyno results). The stock intake holes were JB Welded shut.
The car is one of two race cars I have run in my life. The first was a Datsun 510 GT3 car. It looked stock but was actually all race car. It did 153 mph at Seattle International raceway. In 1982 I won the championship and qualified to go to the Nationals at mid Ohio and race for the North American Championship. Had no money left to go -- rats.

Damn Canadian Oddy, that is very cool you were racing those cars back in the eighties. That Mazda is something else, how the hell did you ever load that on a trailer? I like the Datsun, looks more affordable, but I'm sure it wasn't, 150mph in a go cart! I'll bet it screamed around the track. I could barely afford a 6 pack of cheap beer back than. Congrats on your success and too bad you missed the big show. Don't you wish you still had them?

I actually started racing in the late 70's when I was a teenager. The first race I entered I won it. Then the officials started looking at who this idiot kid was. They found out I was not 18 yet and pulled my racing license. Insurance reasons.
My dad raced at nurburgring in Germany after the war.
Yeah I not happy that I missed the big show at mid Ohio.
No I am glad I don't have them anymore. Very expensive. Would rather own oddy's.
The best time for racing here in North America was the 70's and 80's. And we didn't even know it. Then it went down hill. To bad.