3.0 CS Zenith 35/40 INAT Carb Rebuild / key parts / pair / accel pump / float valves / $100

paul cain

Well-Known Member
Site Donor $$
Messages
711
Reaction score
1,433
Location
Orange County
I ended up purchasing two double carb kits for the '74 3.0 Zenith carb rebuild. What remains is another set of rebuild kits. The accel pumps have the new cup seals installed. The floats are from W&N and brand new. The gasket kits include to top covers to access the accel pumps for replacement. Kit also includes new rubber diaphragms for the secondary vacuum actuators. "kit'' includes a 11 x 17 blow up of all of the pages of the FWSM section on rebuilding the Zenith carbs including the critical float height setting procedure. $100 for everything you pay shipping from CA zip 92660.
 

Attachments

  • Zenith Carbs Manual.pdf
    Zenith Carbs Manual.pdf
    1.1 MB · Views: 307
  • fig06s.gif
    fig06s.gif
    44.5 KB · Views: 250
  • IMG_8230.jpg
    IMG_8230.jpg
    206.5 KB · Views: 317
  • IMG_8233.jpg
    IMG_8233.jpg
    238.7 KB · Views: 370
  • IMG_8234.jpg
    IMG_8234.jpg
    351.7 KB · Views: 533
  • IMG_8235.jpg
    IMG_8235.jpg
    353.7 KB · Views: 356
  • IMG_8236.jpg
    IMG_8236.jpg
    229.8 KB · Views: 256
  • IMG_8237.jpg
    IMG_8237.jpg
    533.3 KB · Views: 233
BlueCS is first in the que. He asked if this was a 'complete' kit?

Answer: No. Carb. rebuild kits of today bare no resemblance to the quality of 20 years ago. Serious aftermarket design compromises make for low cost kits where some of the parts actually fit. Kit was not complete when sealed. One should be very careful when disassembling to recover as many rubber gaskets as possible. The OEM quality is substantially higher then what comes in the box.

In rebuilding mine, I was VERY careful to recover a number of gaskets for re-use (venturis, water jacket O-ring on the choke assy, etc.)

Here is a better set of photos of what you get.

Call this a 'service kit' to address the most common issues with INAT carbs: accel pump replacement and float bowl valve assy. replacement. There is enough of the significant between layer gaskets to separate the 4 layers of the INAT carb and thoroughly clean the insides and replace the above common failures and reassembly and reseal. Bonus round: and replace the secondary vacuum diaphragms. When you get into the smaller gaskets diameters don't match, or crush rings are not in the kit.

Hope this helps. See additional pics.
 

Attachments

  • IMG_8238.jpg
    IMG_8238.jpg
    288.5 KB · Views: 237
  • IMG_8239.jpg
    IMG_8239.jpg
    177.8 KB · Views: 182
  • IMG_8240.jpg
    IMG_8240.jpg
    185.5 KB · Views: 193
  • IMG_8241.jpg
    IMG_8241.jpg
    202.2 KB · Views: 182
  • IMG_8242 (1).jpg
    IMG_8242 (1).jpg
    246.9 KB · Views: 210
Back
Top