Catalytic converter

[xboxrox]

Thanks for your post and pictures. Now I know how the honeycomb was fixed inside the cast iron casing. The surrounding mesh makes sense plus I bet it made removing the honeycomb easier.

Too bad you couldn't use the new cat, but then by not needing it, you saved a lot of time and effort to make it fit correctly. Nice work on your part and your wife's!

Thanks for all the Kudos :^)

IMHO that mesh was the only way any exhaust gas was able to pass through the system ~ the photos don't really show that the entire honeycomb was plugged or melted...

In a 1/2 mile distance WOT test drive to a fwy exit the "before" speed reached was 55MPH and the "after" speed reached was 75+MPH ~ altogether, no real butt-oh-meter increase in horsepower but just a smooth running keep up with traffic daily driver...

Aloha & Mahalo
George

P.S. Other reasons for not installing the new rear cat (yet) include time constraints at Five-O-Motors shop 9am to 6pm; we checked in at 12 noon got on the lift and finished at 4:30pm, customers must stop work & begin cleanup at 5pm... Also, they are not well equipped with drills or drill bits... Some other day we can prep the new rear cat and procure a proper size gasket for it's connection to the spring bolted joint...

P.P.S. Assuming our truck's exhaust system was the stock Mitsubishi (?) I guess in 1986 the Japanese were not required to place a C.A.R.B. number on the rear cat as there are no markings on it... This is a California model truck shipped from Nagoya to Portland then trucked to California ~ the bill of lading military purchase orders showed 7 of these trucks bought by the China Lake Naval Weapons Station near Ridgecrest, Ca.

https://en.wikipedia.org/wiki/Naval_...ion_China_Lake