Blizzard's rolling rebuild of a 1303 1975

[Blizzard]

When I'm done with testing carburators and no longer need the AEM gauge and o2 sensor in the exhaust I will replace the CSP Python with the GPP exhaust.

Before I could install that exhaust I had to do some tedious but important mods. First I matched the inside opening of the copper gasket rings to the exhaust pipe.



Now all 4 gaskets have the same size as the exhaust pipe mating surface



On one of the exhaust pipes the mating surface was not completly flat.
On the picture below you can see it almost done, there is still some black marker visible.



And on one side the pipes were not perfectly parallel to each other so I spend half an hour doing this.
Just like Jeff often said on homebuild by Jeff on youtube
https://www.youtube.com/watch?v=jfPmTOin29w

MORE SANDING.. YAY!!.



I did a leak test with an aircompressor and some soapy water and it's leak free.

[Wally]

Nice job! I like the oilcooler positioning in the front spoiler a lot as well.

[Blizzard]

Thanks, the oilcooler is for a Mazda rx7 and fits perfect.

[Blizzard]

This is a very short film during the tuning of the carburators and jets.
AFR at this stage was running a bit to rich under acceleration.

https://www.youtube.com/watch?v=Qydgk9cmUnE

[Blizzard]

Serious question. Is this necessary or not?
Not so serious explanation why I did this. I wanted to go faster when driving in reverse, so I gave my airplane propeller some more air.



Mounted the number / license plate on longer bolts.

[Blizzard]

Tapped NPT thread into two regular nuts and welded those onto the rocker covers to connect the vent / oil return hoses.

[Blizzard]

The carburator tuning is done, so I no longer need an O2 sensor. I replaced the CSP Phyton with the GPP exhaust. It sounds great standing behind the car. In the car the intake sound is much louder than the exhaust. When buying this exhaust you can choose between 3 sizes. I chose the largest and most quiet, which is 160mm.